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267 Commits
| Author | SHA1 | Message | Date | |
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Keith Randall
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8f296f59de |
Revert "Revert "cmd/compile,runtime: allocate defer records on the stack""
This reverts CL 180761 Reason for revert: Reinstate the stack-allocated defer CL. There was nothing wrong with the CL proper, but stack allocation of defers exposed two other issues. Issue #32477: Fix has been submitted as CL 181258. Issue #32498: Possible fix is CL 181377 (not submitted yet). Change-Id: I32b3365d5026600069291b068bbba6cb15295eb3 Reviewed-on: https://go-review.googlesource.com/c/go/+/181378 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Keith Randall
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49200e3f3e |
Revert "cmd/compile,runtime: allocate defer records on the stack"
This reverts commit
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Keith Randall
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fff4f599fe |
cmd/compile,runtime: allocate defer records on the stack
When a defer is executed at most once in a function body, we can allocate the defer record for it on the stack instead of on the heap. This should make defers like this (which are very common) faster. This optimization applies to 363 out of the 370 static defer sites in the cmd/go binary. name old time/op new time/op delta Defer-4 52.2ns ± 5% 36.2ns ± 3% -30.70% (p=0.000 n=10+10) Fixes #6980 Update #14939 Change-Id: I697109dd7aeef9e97a9eeba2ef65ff53d3ee1004 Reviewed-on: https://go-review.googlesource.com/c/go/+/171758 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> |
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fanzha02
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822a9f537f |
cmd/compile: fix the error of absorbing boolean tests into block(FGE, FGT)
The CL 164718 mistyped the comparison flags. The rules for floating
point comparison should be GreaterThanF and GreaterEqualF. Fortunately,
the wrong optimizations were overwritten by other integer rules, so the
issue won't cause failure but just some performance impact.
The fixed CL optimizes the floating point test as follows.
source code: func foo(f float64) bool { return f > 4 || f < -4}
previous version: "FCMPD", "CSET\tGT", "CBZ"
fixed version: "FCMPD", BLE"
Add the test case.
Change-Id: Iea954fdbb8272b2d642dae0f816dc77286e6e1fa
Reviewed-on: https://go-review.googlesource.com/c/go/+/177121
Reviewed-by: Ben Shi <powerman1st@163.com>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Ben Shi <powerman1st@163.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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Michael Munday
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2c1b5130aa |
cmd/compile: add math/bits.{Add,Sub}64 intrinsics on s390x
This CL adds intrinsics for the 64-bit addition and subtraction functions in math/bits. These intrinsics use the condition code to propagate the carry or borrow bit. To make the carry chains more efficient I've removed the 'clobberFlags' property from most of the load and store operations. Originally these ops did clobber flags when using offsets that didn't fit in a signed 20-bit integer, however that is no longer true. As with other platforms the intrinsics are faster when executed in a chain rather than a loop because currently we need to spill and restore the carry bit between each loop iteration. We may be able to reduce the need to do this on s390x (e.g. by using compare-and-branch instructions that do not clobber flags) in the future. name old time/op new time/op delta Add64 1.21ns ± 2% 2.03ns ± 2% +67.18% (p=0.000 n=7+10) Add64multiple 2.98ns ± 3% 1.03ns ± 0% -65.39% (p=0.000 n=10+9) Sub64 1.23ns ± 4% 2.03ns ± 1% +64.85% (p=0.000 n=10+10) Sub64multiple 3.73ns ± 4% 1.04ns ± 1% -72.28% (p=0.000 n=10+8) Change-Id: I913bbd5e19e6b95bef52f5bc4f14d6fe40119083 Reviewed-on: https://go-review.googlesource.com/c/go/+/174303 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Lynn Boger
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e30aa166ea |
test: enable more memcombine tests for ppc64le
This enables more of the testcases in memcombine for ppc64le, and adds more detail to some existing. Change-Id: Ic522a1175bed682b546909c96f9ea758f8db247c Reviewed-on: https://go-review.googlesource.com/c/go/+/174737 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Brian Kessler
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4d9dd35806 |
cmd/compile: add signed divisibility rules
"Division by invariant integers using multiplication" paper by Granlund and Montgomery contains a method for directly computing divisibility (x%c == 0 for c constant) by means of the modular inverse. The method is further elaborated in "Hacker's Delight" by Warren Section 10-17 This general rule can compute divisibilty by one multiplication, and add and a compare for odd divisors and an additional rotate for even divisors. To apply the divisibility rule, we must take into account the rules to rewrite x%c = x-((x/c)*c) and (x/c) for c constant on the first optimization pass "opt". This complicates the matching as we want to match only in the cases where the result of (x/c) is not also needed. So, we must match on the expanded form of (x/c) in the expression x == c*(x/c) in the "late opt" pass after common subexpresion elimination. Note, that if there is an intermediate opt pass introduced in the future we could simplify these rules by delaying the magic division rewrite to "late opt" and matching directly on (x/c) in the intermediate opt pass. On amd64, the divisibility check is 30-45% faster. name old time/op new time/op delta` DivisiblePow2constI64-4 0.83ns ± 1% 0.82ns ± 0% ~ (p=0.079 n=5+4) DivisibleconstI64-4 2.68ns ± 1% 1.87ns ± 0% -30.33% (p=0.000 n=5+4) DivisibleWDivconstI64-4 2.69ns ± 1% 2.71ns ± 3% ~ (p=1.000 n=5+5) DivisiblePow2constI32-4 1.15ns ± 1% 1.15ns ± 0% ~ (p=0.238 n=5+4) DivisibleconstI32-4 2.24ns ± 1% 1.20ns ± 0% -46.48% (p=0.016 n=5+4) DivisibleWDivconstI32-4 2.27ns ± 1% 2.27ns ± 1% ~ (p=0.683 n=5+5) DivisiblePow2constI16-4 0.81ns ± 1% 0.82ns ± 1% ~ (p=0.135 n=5+5) DivisibleconstI16-4 2.11ns ± 2% 1.20ns ± 1% -42.99% (p=0.008 n=5+5) DivisibleWDivconstI16-4 2.23ns ± 0% 2.27ns ± 2% +1.79% (p=0.029 n=4+4) DivisiblePow2constI8-4 0.81ns ± 1% 0.81ns ± 1% ~ (p=0.286 n=5+5) DivisibleconstI8-4 2.13ns ± 3% 1.19ns ± 1% -43.84% (p=0.008 n=5+5) DivisibleWDivconstI8-4 2.23ns ± 1% 2.25ns ± 1% ~ (p=0.183 n=5+5) Fixes #30282 Fixes #15806 Change-Id: Id20d78263a4fdfe0509229ae4dfa2fede83fc1d0 Reviewed-on: https://go-review.googlesource.com/c/go/+/173998 Run-TryBot: Brian Kessler <brian.m.kessler@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Carlos Eduardo Seo
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50ad09418e |
cmd/compile: intrinsify math/bits.Add64 for ppc64x
This change creates an intrinsic for Add64 for ppc64x and adds a testcase for it. name old time/op new time/op delta Add64-160 1.90ns ±40% 2.29ns ± 0% ~ (p=0.119 n=5+5) Add64multiple-160 6.69ns ± 2% 2.45ns ± 4% -63.47% (p=0.016 n=4+5) Change-Id: I9abe6fb023fdf62eea3c9b46a1820f60bb0a7f97 Reviewed-on: https://go-review.googlesource.com/c/go/+/173758 Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> Run-TryBot: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> |
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Brian Kessler
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a28a942768 |
cmd/compile: add unsigned divisibility rules
"Division by invariant integers using multiplication" paper by Granlund and Montgomery contains a method for directly computing divisibility (x%c == 0 for c constant) by means of the modular inverse. The method is further elaborated in "Hacker's Delight" by Warren Section 10-17 This general rule can compute divisibilty by one multiplication and a compare for odd divisors and an additional rotate for even divisors. To apply the divisibility rule, we must take into account the rules to rewrite x%c = x-((x/c)*c) and (x/c) for c constant on the first optimization pass "opt". This complicates the matching as we want to match only in the cases where the result of (x/c) is not also available. So, we must match on the expanded form of (x/c) in the expression x == c*(x/c) in the "late opt" pass after common subexpresion elimination. Note, that if there is an intermediate opt pass introduced in the future we could simplify these rules by delaying the magic division rewrite to "late opt" and matching directly on (x/c) in the intermediate opt pass. Additional rules to lower the generic RotateLeft* ops were also applied. On amd64, the divisibility check is 25-50% faster. name old time/op new time/op delta DivconstI64-4 2.08ns ± 0% 2.08ns ± 1% ~ (p=0.881 n=5+5) DivisibleconstI64-4 2.67ns ± 0% 2.67ns ± 1% ~ (p=1.000 n=5+5) DivisibleWDivconstI64-4 2.67ns ± 0% 2.67ns ± 0% ~ (p=0.683 n=5+5) DivconstU64-4 2.08ns ± 1% 2.08ns ± 1% ~ (p=1.000 n=5+5) DivisibleconstU64-4 2.77ns ± 1% 1.55ns ± 2% -43.90% (p=0.008 n=5+5) DivisibleWDivconstU64-4 2.99ns ± 1% 2.99ns ± 1% ~ (p=1.000 n=5+5) DivconstI32-4 1.53ns ± 2% 1.53ns ± 0% ~ (p=1.000 n=5+5) DivisibleconstI32-4 2.23ns ± 0% 2.25ns ± 3% ~ (p=0.167 n=5+5) DivisibleWDivconstI32-4 2.27ns ± 1% 2.27ns ± 1% ~ (p=0.429 n=5+5) DivconstU32-4 1.78ns ± 0% 1.78ns ± 1% ~ (p=1.000 n=4+5) DivisibleconstU32-4 2.52ns ± 2% 1.26ns ± 0% -49.96% (p=0.000 n=5+4) DivisibleWDivconstU32-4 2.63ns ± 0% 2.85ns ±10% +8.29% (p=0.016 n=4+5) DivconstI16-4 1.54ns ± 0% 1.54ns ± 0% ~ (p=0.333 n=4+5) DivisibleconstI16-4 2.10ns ± 0% 2.10ns ± 1% ~ (p=0.571 n=4+5) DivisibleWDivconstI16-4 2.22ns ± 0% 2.23ns ± 1% ~ (p=0.556 n=4+5) DivconstU16-4 1.09ns ± 0% 1.01ns ± 1% -7.74% (p=0.000 n=4+5) DivisibleconstU16-4 1.83ns ± 0% 1.26ns ± 0% -31.52% (p=0.008 n=5+5) DivisibleWDivconstU16-4 1.88ns ± 0% 1.89ns ± 1% ~ (p=0.365 n=5+5) DivconstI8-4 1.54ns ± 1% 1.54ns ± 1% ~ (p=1.000 n=5+5) DivisibleconstI8-4 2.10ns ± 0% 2.11ns ± 0% ~ (p=0.238 n=5+4) DivisibleWDivconstI8-4 2.22ns ± 0% 2.23ns ± 2% ~ (p=0.762 n=5+5) DivconstU8-4 0.92ns ± 1% 0.94ns ± 1% +2.65% (p=0.008 n=5+5) DivisibleconstU8-4 1.66ns ± 0% 1.26ns ± 1% -24.28% (p=0.008 n=5+5) DivisibleWDivconstU8-4 1.79ns ± 0% 1.80ns ± 1% ~ (p=0.079 n=4+5) A follow-up change will address the signed division case. Updates #30282 Change-Id: I7e995f167179aa5c76bb10fbcbeb49c520943403 Reviewed-on: https://go-review.googlesource.com/c/go/+/168037 Run-TryBot: Brian Kessler <brian.m.kessler@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Brian Kessler
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44343c777c |
cmd/compile: add signed divisibility by power of 2 rules
For powers of two (c=1<<k), the divisibility check x%c == 0 can be made just by checking the trailing zeroes via a mask x&(c-1) == 0 even for signed integers. This avoids division fix-ups when just divisibility check is needed. To apply this rule, we match on the fixed-up version of the division. This is neccessary because the mod and division rewrite rules are already applied during the initial opt pass. The speed up on amd64 due to elimination of unneccessary fix-up code is ~55%: name old time/op new time/op delta DivconstI64-4 2.08ns ± 0% 2.09ns ± 1% ~ (p=0.730 n=5+5) DivisiblePow2constI64-4 1.78ns ± 1% 0.81ns ± 1% -54.66% (p=0.008 n=5+5) DivconstU64-4 2.08ns ± 0% 2.08ns ± 0% ~ (p=0.683 n=5+5) DivconstI32-4 1.53ns ± 0% 1.53ns ± 1% ~ (p=0.968 n=4+5) DivisiblePow2constI32-4 1.79ns ± 1% 0.81ns ± 1% -54.97% (p=0.008 n=5+5) DivconstU32-4 1.78ns ± 1% 1.80ns ± 2% ~ (p=0.206 n=5+5) DivconstI16-4 1.54ns ± 2% 1.54ns ± 0% ~ (p=0.238 n=5+4) DivisiblePow2constI16-4 1.78ns ± 0% 0.81ns ± 1% -54.72% (p=0.000 n=4+5) DivconstU16-4 1.00ns ± 5% 1.01ns ± 1% ~ (p=0.119 n=5+5) DivconstI8-4 1.54ns ± 0% 1.54ns ± 2% ~ (p=0.571 n=4+5) DivisiblePow2constI8-4 1.78ns ± 0% 0.82ns ± 8% -53.71% (p=0.008 n=5+5) DivconstU8-4 0.93ns ± 1% 0.93ns ± 1% ~ (p=0.643 n=5+5) A follow-up CL will address the general case of x%c == 0 for signed integers. Updates #15806 Change-Id: Iabadbbe369b6e0998c8ce85d038ebc236142e42a Reviewed-on: https://go-review.googlesource.com/c/go/+/173557 Run-TryBot: Brian Kessler <brian.m.kessler@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Keith Randall
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17615969b6 |
Revert "cmd/compile: add signed divisibility by power of 2 rules"
This reverts CL 168038 (git
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Brian Kessler
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68819fb6d2 |
cmd/compile: add signed divisibility by power of 2 rules
For powers of two (c=1<<k), the divisibility check x%c == 0 can be made just by checking the trailing zeroes via a mask x&(c-1)==0 even for signed integers. This avoids division fixups when just divisibility check is needed. To apply this rule the generic divisibility rule for A%B = A-(A/B*B) is disabled on the "opt" pass, but this does not affect generated code as this rule is applied later. The speed up on amd64 due to elimination of unneccessary fixup code is ~55%: name old time/op new time/op delta DivconstI64-4 2.08ns ± 0% 2.07ns ± 0% ~ (p=0.079 n=5+5) DivisiblePow2constI64-4 1.78ns ± 1% 0.81ns ± 1% -54.55% (p=0.008 n=5+5) DivconstU64-4 2.08ns ± 0% 2.08ns ± 0% ~ (p=1.000 n=5+5) DivconstI32-4 1.53ns ± 0% 1.53ns ± 0% ~ (all equal) DivisiblePow2constI32-4 1.79ns ± 1% 0.81ns ± 4% -54.75% (p=0.008 n=5+5) DivconstU32-4 1.78ns ± 1% 1.78ns ± 1% ~ (p=1.000 n=5+5) DivconstI16-4 1.54ns ± 2% 1.53ns ± 0% ~ (p=0.333 n=5+4) DivisiblePow2constI16-4 1.78ns ± 0% 0.79ns ± 1% -55.39% (p=0.000 n=4+5) DivconstU16-4 1.00ns ± 5% 0.99ns ± 1% ~ (p=0.730 n=5+5) DivconstI8-4 1.54ns ± 0% 1.53ns ± 0% ~ (p=0.714 n=4+5) DivisiblePow2constI8-4 1.78ns ± 0% 0.80ns ± 0% -55.06% (p=0.000 n=5+4) DivconstU8-4 0.93ns ± 1% 0.95ns ± 1% +1.72% (p=0.024 n=5+5) A follow-up CL will address the general case of x%c == 0 for signed integers. Updates #15806 Change-Id: I0d284863774b1bc8c4ce87443bbaec6103e14ef4 Reviewed-on: https://go-review.googlesource.com/c/go/+/168038 Reviewed-by: Keith Randall <khr@golang.org> |
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Keith Randall
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fd788a86b6 |
cmd/compile: always mark atColumn1 results as statements
In 31618, we end up comparing the is-stmt-ness of positions to repurpose real instructions as inline marks. If the is-stmt-ness doesn't match, we end up not being able to remove the inline mark. Always use statement-full positions to do the matching, so we always find a match if there is one. Also always use positions that are statements for inline marks. Fixes #31618 Change-Id: Idaf39bdb32fa45238d5cd52973cadf4504f947d5 Reviewed-on: https://go-review.googlesource.com/c/go/+/173324 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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erifan01
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f8f265b9cf |
cmd/compile: intrinsify math/bits.Sub64 for arm64
This CL instrinsifies Sub64 with arm64 instruction sequence NEGS, SBCS, NGC and NEG, and optimzes the case of borrowing chains. Benchmarks: name old time/op new time/op delta Sub-64 2.500000ns +- 0% 2.048000ns +- 1% -18.08% (p=0.000 n=10+10) Sub32-64 2.500000ns +- 0% 2.500000ns +- 0% ~ (all equal) Sub64-64 2.500000ns +- 0% 2.080000ns +- 0% -16.80% (p=0.000 n=10+7) Sub64multiple-64 7.090000ns +- 0% 2.090000ns +- 0% -70.52% (p=0.000 n=10+10) Change-Id: I3d2664e009a9635e13b55d2c4567c7b34c2c0655 Reviewed-on: https://go-review.googlesource.com/c/go/+/159018 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Josh Bleecher Snyder
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68d4b1265e |
cmd/compile: reduce bits.Div64(0, lo, y) to 64 bit division
With this change, these two functions generate identical code:
func f(x uint64) (uint64, uint64) {
return bits.Div64(0, x, 5)
}
func g(x uint64) (uint64, uint64) {
return x / 5, x % 5
}
Updates #31582
Change-Id: Ia96c2e67f8af5dd985823afee5f155608c04a4b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/173197
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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Keith Randall
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48ef01051a |
cmd/compile: handle new panicindex/slice names in optimizations
These new calls should not prevent NOSPLIT promotion, like the old ones. These new calls should not prevent racefuncenter/exit removal. (The latter was already true, as the new calls are not yet lowered to StaticCalls at the point where racefuncenter/exit removal is done.) Add tests to make sure we don't regress (again). Fixes #31219 Change-Id: I3fb6b17cdd32c425829f1e2498defa813a5a9ace Reviewed-on: https://go-review.googlesource.com/c/go/+/170639 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
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erifan01
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d0cbf9bf53 |
cmd/compile: follow up intrinsifying math/bits.Add64 for arm64
This CL deals with the additional comments of CL 159017. Change-Id: I4ad3c60c834646d58dc0c544c741b92bfe83fb8b Reviewed-on: https://go-review.googlesource.com/c/go/+/168857 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Carlos Eduardo Seo
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3023d7da49 |
cmd/compile/internal, cmd/internal/obj/ppc64: generate new count trailing zeros instructions on POWER9
This change adds new POWER9 instructions for counting trailing zeros (CNTTZW/CNTTZD) to the assembler and generates them in SSA when GOPPC64=power9. name old time/op new time/op delta TrailingZeros-160 1.59ns ±20% 1.45ns ±10% -8.81% (p=0.000 n=14+13) TrailingZeros8-160 1.55ns ±23% 1.62ns ±44% ~ (p=0.593 n=13+15) TrailingZeros16-160 1.78ns ±23% 1.62ns ±38% -9.31% (p=0.003 n=14+14) TrailingZeros32-160 1.64ns ±10% 1.49ns ± 9% -9.15% (p=0.000 n=13+14) TrailingZeros64-160 1.53ns ± 6% 1.45ns ± 5% -5.38% (p=0.000 n=15+13) Change-Id: I365e6ff79f3ce4d8ebe089a6a86b1771853eb596 Reviewed-on: https://go-review.googlesource.com/c/go/+/167517 Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> |
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erifan01
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5714c91b53 |
cmd/compile: intrinsify math/bits.Add64 for arm64
This CL instrinsifies Add64 with arm64 instruction sequence ADDS, ADCS and ADC, and optimzes the case of carry chains.The CL also changes the test code so that the intrinsic implementation can be tested. Benchmarks: name old time/op new time/op delta Add-224 2.500000ns +- 0% 2.090000ns +- 4% -16.40% (p=0.000 n=9+10) Add32-224 2.500000ns +- 0% 2.500000ns +- 0% ~ (all equal) Add64-224 2.500000ns +- 0% 1.577778ns +- 2% -36.89% (p=0.000 n=10+9) Add64multiple-224 6.000000ns +- 0% 2.000000ns +- 0% -66.67% (p=0.000 n=10+10) Change-Id: I6ee91c9a85c16cc72ade5fd94868c579f16c7615 Reviewed-on: https://go-review.googlesource.com/c/go/+/159017 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Josh Bleecher Snyder
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250b96a7bf |
cmd/compile: slightly optimize adding 128
'SUBQ $-0x80, r' is shorter to encode than 'ADDQ $0x80, r', and functionally equivalent. Use it instead. Shaves off a few bytes here and there: file before after Δ % compile 25935856 25927664 -8192 -0.032% nm 4251840 4247744 -4096 -0.096% Change-Id: Ia9e02ea38cbded6a52a613b92e3a914f878d931e Reviewed-on: https://go-review.googlesource.com/c/go/+/168344 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Keith Randall
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2c423f063b |
cmd/compile,runtime: provide index information on bounds check failure
A few examples (for accessing a slice of length 3): s[-1] runtime error: index out of range [-1] s[3] runtime error: index out of range [3] with length 3 s[-1:0] runtime error: slice bounds out of range [-1:] s[3:0] runtime error: slice bounds out of range [3:0] s[3:-1] runtime error: slice bounds out of range [:-1] s[3:4] runtime error: slice bounds out of range [:4] with capacity 3 s[0:3:4] runtime error: slice bounds out of range [::4] with capacity 3 Note that in cases where there are multiple things wrong with the indexes (e.g. s[3:-1]), we report one of those errors kind of arbitrarily, currently the rightmost one. An exhaustive set of examples is in issue30116[u].out in the CL. The message text has the same prefix as the old message text. That leads to slightly awkward phrasing but hopefully minimizes the chance that code depending on the error text will break. Increases the size of the go binary by 0.5% (amd64). The panic functions take arguments in registers in order to keep the size of the compiled code as small as possible. Fixes #30116 Change-Id: Idb99a827b7888822ca34c240eca87b7e44a04fdd Reviewed-on: https://go-review.googlesource.com/c/go/+/161477 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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Tobias Klauser
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156c830bea |
cmd/compile: eliminate unnecessary type conversions in TrailingZeros(16|8) for arm
This follows CL 156999 which did the same for arm64. name old time/op new time/op delta TrailingZeros-4 7.30ns ± 1% 7.30ns ± 0% ~ (p=0.413 n=9+9) TrailingZeros8-4 8.32ns ± 0% 7.17ns ± 0% -13.77% (p=0.000 n=10+9) TrailingZeros16-4 8.30ns ± 0% 7.18ns ± 0% -13.50% (p=0.000 n=9+10) TrailingZeros32-4 6.46ns ± 1% 6.47ns ± 1% ~ (p=0.325 n=10+10) TrailingZeros64-4 16.3ns ± 0% 16.2ns ± 0% -0.61% (p=0.000 n=7+10) Change-Id: I7e9e1abf7e30d811aa474d272b2824ec7cbbaa98 Reviewed-on: https://go-review.googlesource.com/c/go/+/167797 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Richard Musiol
|
5ee1b84959 |
math, math/bits: add intrinsics for wasm
This commit adds compiler intrinsics for the packages math and math/bits on the wasm architecture for better performance. benchmark old ns/op new ns/op delta BenchmarkCeil 8.31 3.21 -61.37% BenchmarkCopysign 5.24 3.88 -25.95% BenchmarkAbs 5.42 3.34 -38.38% BenchmarkFloor 8.29 3.18 -61.64% BenchmarkRoundToEven 9.76 3.26 -66.60% BenchmarkSqrtLatency 8.13 4.88 -39.98% BenchmarkSqrtPrime 5246 3535 -32.62% BenchmarkTrunc 8.29 3.15 -62.00% BenchmarkLeadingZeros 13.0 4.23 -67.46% BenchmarkLeadingZeros8 4.65 4.42 -4.95% BenchmarkLeadingZeros16 7.60 4.38 -42.37% BenchmarkLeadingZeros32 10.7 4.48 -58.13% BenchmarkLeadingZeros64 12.9 4.31 -66.59% BenchmarkTrailingZeros 6.52 4.04 -38.04% BenchmarkTrailingZeros8 4.57 4.14 -9.41% BenchmarkTrailingZeros16 6.69 4.16 -37.82% BenchmarkTrailingZeros32 6.97 4.23 -39.31% BenchmarkTrailingZeros64 6.59 4.00 -39.30% BenchmarkOnesCount 7.93 3.30 -58.39% BenchmarkOnesCount8 3.56 3.19 -10.39% BenchmarkOnesCount16 4.85 3.19 -34.23% BenchmarkOnesCount32 7.27 3.19 -56.12% BenchmarkOnesCount64 8.08 3.28 -59.41% BenchmarkRotateLeft 4.88 3.80 -22.13% BenchmarkRotateLeft64 5.03 3.63 -27.83% Change-Id: Ic1e0c2984878be8defb6eb7eb6ee63765c793222 Reviewed-on: https://go-review.googlesource.com/c/go/+/165177 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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|
Josh Bleecher Snyder
|
61945fc502 |
cmd/compile: don't generate panicshift for masked int shifts
We know that a & 31 is non-negative for all a, signed or not. We can avoid checking that and needing to write out an unreachable call to panicshift. Change-Id: I32f32fb2c950d2b2b35ac5c0e99b7b2dbd47f917 Reviewed-on: https://go-review.googlesource.com/c/go/+/167499 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Keith Randall <khr@golang.org> |
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|
Josh Bleecher Snyder
|
870cfe6484 |
test/codegen: gofmt
Change-Id: I33f5b5051e5f75aa264ec656926223c5a3c09c1b Reviewed-on: https://go-review.googlesource.com/c/go/+/167498 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Matt Layher <mdlayher@gmail.com> |
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|
Keith Randall
|
486ca37b14 |
test: fix memcombine tests
Two tests (load_le_byte8_uint64_inv and load_be_byte8_uint64) pass but the generated code isn't actually correct. The test regexp provides a false negative, as it matches the MOVQ (SP), BP instruction in the epilogue. Combined loads never worked for these cases - the test was added in error as part of a batch and not noticed because of the above false match. Normalize the amd64/386 tests to always negative match on narrower loads and OR. Change-Id: I256861924774d39db0e65723866c81df5ab5076f Reviewed-on: https://go-review.googlesource.com/c/go/+/166837 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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|
fanzha02
|
6efd51c6b7 |
cmd/compile: change the condition flags of floating-point comparisons in arm64 backend
Current compiler reverses operands to work around NaN in "less than" and "less equal than" comparisons. But if we want to use "FCMPD/FCMPS $(0.0), Fn" to do some optimization, the workaround way does not work. Because assembler does not support instruction "FCMPD/FCMPS Fn, $(0.0)". This CL sets condition flags for floating-point comparisons to resolve this problem. Change-Id: Ia48076a1da95da64596d6e68304018cb301ebe33 Reviewed-on: https://go-review.googlesource.com/c/go/+/164718 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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erifan01
|
4e2b0dda8c |
cmd/compile: eliminate unnecessary type conversions in TrailingZeros(16|8) for arm64
This CL eliminates unnecessary type conversion operations: OpZeroExt16to64 and OpZeroExt8to64.
If the input argrument is a nonzero value, then ORconst operation can also be eliminated.
Benchmarks:
name old time/op new time/op delta
TrailingZeros-8 2.75ns ± 0% 2.75ns ± 0% ~ (all equal)
TrailingZeros8-8 3.49ns ± 1% 2.93ns ± 0% -16.00% (p=0.000 n=10+10)
TrailingZeros16-8 3.49ns ± 1% 2.93ns ± 0% -16.05% (p=0.000 n=9+10)
TrailingZeros32-8 2.67ns ± 1% 2.68ns ± 1% ~ (p=0.468 n=10+10)
TrailingZeros64-8 2.67ns ± 1% 2.65ns ± 0% -0.62% (p=0.022 n=10+9)
code:
func f16(x uint) { z = bits.TrailingZeros16(uint16(x)) }
Before:
"".f16 STEXT size=48 args=0x8 locals=0x0 leaf
0x0000 00000 (test.go:7) TEXT "".f16(SB), LEAF|NOFRAME|ABIInternal, $0-8
0x0000 00000 (test.go:7) FUNCDATA ZR, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (test.go:7) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (test.go:7) FUNCDATA $3, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (test.go:7) PCDATA $2, ZR
0x0000 00000 (test.go:7) PCDATA ZR, ZR
0x0000 00000 (test.go:7) MOVD "".x(FP), R0
0x0004 00004 (test.go:7) MOVHU R0, R0
0x0008 00008 (test.go:7) ORR $65536, R0, R0
0x000c 00012 (test.go:7) RBIT R0, R0
0x0010 00016 (test.go:7) CLZ R0, R0
0x0014 00020 (test.go:7) MOVD R0, "".z(SB)
0x0020 00032 (test.go:7) RET (R30)
This line of code is unnecessary:
0x0004 00004 (test.go:7) MOVHU R0, R0
After:
"".f16 STEXT size=32 args=0x8 locals=0x0 leaf
0x0000 00000 (test.go:7) TEXT "".f16(SB), LEAF|NOFRAME|ABIInternal, $0-8
0x0000 00000 (test.go:7) FUNCDATA ZR, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (test.go:7) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (test.go:7) FUNCDATA $3, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (test.go:7) PCDATA $2, ZR
0x0000 00000 (test.go:7) PCDATA ZR, ZR
0x0000 00000 (test.go:7) MOVD "".x(FP), R0
0x0004 00004 (test.go:7) ORR $65536, R0, R0
0x0008 00008 (test.go:7) RBITW R0, R0
0x000c 00012 (test.go:7) CLZW R0, R0
0x0010 00016 (test.go:7) MOVD R0, "".z(SB)
0x001c 00028 (test.go:7) RET (R30)
The situation of TrailingZeros8 is similar to TrailingZeros16.
Change-Id: I473bdca06be8460a0be87abbae6fe640017e4c9d
Reviewed-on: https://go-review.googlesource.com/c/go/+/156999
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
|
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|
erifan01
|
fee84cc905 |
cmd/compile: add an optimization rule for math/bits.ReverseBytes16 on arm
This CL adds two rules to turn patterns like ((x<<8) | (x>>8)) (the type of x is uint16, "|" can also be "+" or "^") to a REV16 instruction on arm v6+. This optimization rule can be used for math/bits.ReverseBytes16. Benchmarks on arm v6: name old time/op new time/op delta ReverseBytes-32 2.86ns ± 0% 2.86ns ± 0% ~ (all equal) ReverseBytes16-32 2.86ns ± 0% 2.86ns ± 0% ~ (all equal) ReverseBytes32-32 1.29ns ± 0% 1.29ns ± 0% ~ (all equal) ReverseBytes64-32 1.43ns ± 0% 1.43ns ± 0% ~ (all equal) Change-Id: I819e633c9a9d308f8e476fb0c82d73fb73dd019f Reviewed-on: https://go-review.googlesource.com/c/go/+/159019 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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|
erifan01
|
159b2de442 |
cmd/compile: optimize math/bits.Div32 for arm64
Benchmark:
name old time/op new time/op delta
Div-8 22.0ns ± 0% 22.0ns ± 0% ~ (all equal)
Div32-8 6.51ns ± 0% 3.00ns ± 0% -53.90% (p=0.000 n=10+8)
Div64-8 22.5ns ± 0% 22.5ns ± 0% ~ (all equal)
Code:
func div32(hi, lo, y uint32) (q, r uint32) {return bits.Div32(hi, lo, y)}
Before:
0x0020 00032 (test.go:24) MOVWU "".y+8(FP), R0
0x0024 00036 ($GOROOT/src/math/bits/bits.go:472) CBZW R0, 132
0x0028 00040 ($GOROOT/src/math/bits/bits.go:472) MOVWU "".hi(FP), R1
0x002c 00044 ($GOROOT/src/math/bits/bits.go:472) CMPW R1, R0
0x0030 00048 ($GOROOT/src/math/bits/bits.go:472) BLS 96
0x0034 00052 ($GOROOT/src/math/bits/bits.go:475) MOVWU "".lo+4(FP), R2
0x0038 00056 ($GOROOT/src/math/bits/bits.go:475) ORR R1<<32, R2, R1
0x003c 00060 ($GOROOT/src/math/bits/bits.go:476) CBZ R0, 140
0x0040 00064 ($GOROOT/src/math/bits/bits.go:476) UDIV R0, R1, R2
0x0044 00068 (test.go:24) MOVW R2, "".q+16(FP)
0x0048 00072 ($GOROOT/src/math/bits/bits.go:476) UREM R0, R1, R0
0x0050 00080 (test.go:24) MOVW R0, "".r+20(FP)
0x0054 00084 (test.go:24) MOVD -8(RSP), R29
0x0058 00088 (test.go:24) MOVD.P 32(RSP), R30
0x005c 00092 (test.go:24) RET (R30)
After:
0x001c 00028 (test.go:24) MOVWU "".y+8(FP), R0
0x0020 00032 (test.go:24) CBZW R0, 92
0x0024 00036 (test.go:24) MOVWU "".hi(FP), R1
0x0028 00040 (test.go:24) CMPW R0, R1
0x002c 00044 (test.go:24) BHS 84
0x0030 00048 (test.go:24) MOVWU "".lo+4(FP), R2
0x0034 00052 (test.go:24) ORR R1<<32, R2, R4
0x0038 00056 (test.go:24) UDIV R0, R4, R3
0x003c 00060 (test.go:24) MSUB R3, R4, R0, R4
0x0040 00064 (test.go:24) MOVW R3, "".q+16(FP)
0x0044 00068 (test.go:24) MOVW R4, "".r+20(FP)
0x0048 00072 (test.go:24) MOVD -8(RSP), R29
0x004c 00076 (test.go:24) MOVD.P 16(RSP), R30
0x0050 00080 (test.go:24) RET (R30)
UREM instruction in the previous assembly code will be converted to UDIV and MSUB instructions
on arm64. However the UDIV instruction in UREM is unnecessary, because it's a duplicate of the
previous UDIV. This CL adds a rule to have this extra UDIV instruction removed by CSE.
Change-Id: Ie2508784320020b2de022806d09f75a7871bb3d7
Reviewed-on: https://go-review.googlesource.com/c/159577
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
|
||
|
erifan01
|
192b675f17 |
cmd/compile: add an optimaztion rule for math/bits.ReverseBytes16 on arm64
On amd64 ReverseBytes16 is lowered to a rotate instruction. However arm64 doesn't
have 16-bit rotate instruction, but has a REV16W instruction which can be used
for ReverseBytes16. This CL adds a rule to turn the patterns like (x<<8) | (x>>8)
(the type of x is uint16, and "|" can also be "^" or "+") to a REV16W instruction.
Code:
func reverseBytes16(i uint16) uint16 { return bits.ReverseBytes16(i) }
Before:
0x0004 00004 (test.go:6) MOVHU "".i(FP), R0
0x0008 00008 ($GOROOT/src/math/bits/bits.go:262) UBFX $8, R0, $8, R1
0x000c 00012 ($GOROOT/src/math/bits/bits.go:262) ORR R0<<8, R1, R0
0x0010 00016 (test.go:6) MOVH R0, "".~r1+8(FP)
0x0014 00020 (test.go:6) RET (R30)
After:
0x0000 00000 (test.go:6) MOVHU "".i(FP), R0
0x0004 00004 (test.go:6) REV16W R0, R0
0x0008 00008 (test.go:6) MOVH R0, "".~r1+8(FP)
0x000c 00012 (test.go:6) RET (R30)
Benchmarks:
name old time/op new time/op delta
ReverseBytes-224 1.000000ns +- 0% 1.000000ns +- 0% ~ (all equal)
ReverseBytes16-224 1.500000ns +- 0% 1.000000ns +- 0% -33.33% (p=0.000 n=9+10)
ReverseBytes32-224 1.000000ns +- 0% 1.000000ns +- 0% ~ (all equal)
ReverseBytes64-224 1.000000ns +- 0% 1.000000ns +- 0% ~ (all equal)
Change-Id: I87cd41b2d8e549bf39c601f185d5775bd42d739c
Reviewed-on: https://go-review.googlesource.com/c/157757
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
|
||
|
erifan01
|
dd91269b7c |
cmd/compile: optimize math/bits Len32 intrinsic on arm64
Arm64 has a 32-bit CLZ instruction CLZW, which can be used for intrinsic Len32.
Function LeadingZeros32 calls Len32, with this change, the assembly code of
LeadingZeros32 becomes more concise.
Go code:
func f32(x uint32) { z = bits.LeadingZeros32(x) }
Before:
"".f32 STEXT size=32 args=0x8 locals=0x0 leaf
0x0000 00000 (test.go:7) TEXT "".f32(SB), LEAF|NOFRAME|ABIInternal, $0-8
0x0004 00004 (test.go:7) MOVWU "".x(FP), R0
0x0008 00008 ($GOROOT/src/math/bits/bits.go:30) CLZ R0, R0
0x000c 00012 ($GOROOT/src/math/bits/bits.go:30) SUB $32, R0, R0
0x0010 00016 (test.go:7) MOVD R0, "".z(SB)
0x001c 00028 (test.go:7) RET (R30)
After:
"".f32 STEXT size=32 args=0x8 locals=0x0 leaf
0x0000 00000 (test.go:7) TEXT "".f32(SB), LEAF|NOFRAME|ABIInternal, $0-8
0x0004 00004 (test.go:7) MOVWU "".x(FP), R0
0x0008 00008 ($GOROOT/src/math/bits/bits.go:30) CLZW R0, R0
0x000c 00012 (test.go:7) MOVD R0, "".z(SB)
0x0018 00024 (test.go:7) RET (R30)
Benchmarks:
name old time/op new time/op delta
LeadingZeros-8 2.53ns ± 0% 2.55ns ± 0% +0.67% (p=0.000 n=10+10)
LeadingZeros8-8 3.56ns ± 0% 3.56ns ± 0% ~ (all equal)
LeadingZeros16-8 3.55ns ± 0% 3.56ns ± 0% ~ (p=0.465 n=10+10)
LeadingZeros32-8 3.55ns ± 0% 2.96ns ± 0% -16.71% (p=0.000 n=10+7)
LeadingZeros64-8 2.53ns ± 0% 2.54ns ± 0% ~ (p=0.059 n=8+10)
Change-Id: Ie5666bb82909e341060e02ffd4e86c0e5d67e90a
Reviewed-on: https://go-review.googlesource.com/c/157000
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
|
||
Iskander Sharipov
|
c1050a8e54 |
cmd/compile: don't generate newobject call for 0-sized types
Emit &runtime.zerobase instead of a call to newobject for allocations of zero sized objects in walk.go. Fixes #29446 Change-Id: I11b67981d55009726a17c2e582c12ce0c258682e Reviewed-on: https://go-review.googlesource.com/c/155840 Run-TryBot: Iskander Sharipov <quasilyte@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Keith Randall
|
933e34ac99 |
cmd/compile: treat slice pointers as non-nil
var a []int = ... p := &a[0] _ = *p We don't need to nil check on the 3rd line. If the bounds check on the 2nd line passes, we know p is non-nil. We rely on the fact that any cap>0 slice has a non-nil pointer as its pointer to the backing array. This is true for all safely-constructed slices, and I don't see any reason why someone would violate this rule using unsafe. R=go1.13 Fixes #30366 Change-Id: I3ed764fcb72cfe1fbf963d8c1a82e24e3b6dead7 Reviewed-on: https://go-review.googlesource.com/c/163740 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> |
||
|
Keith Randall
|
c5414457c6 |
cmd/compile: pad zero-sized stack variables
If someone takes a pointer to a zero-sized stack variable, it can be incorrectly interpreted as a pointer to the next object in the stack frame. To avoid this, add some padding after zero-sized variables. We only need to pad if the next variable in memory (which is the previous variable in the order in which we allocate variables to the stack frame) has pointers. If the next variable has no pointers, it won't hurt to have a pointer to it. Because we allocate all pointer-containing variables before all non-pointer-containing variables, we should only have to pad once per frame. Fixes #24993 Change-Id: Ife561cdfdf964fdbf69af03ae6ba97d004e6193c Reviewed-on: https://go-review.googlesource.com/c/155698 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
||
Ben Shi
|
c042fedbc8 |
test/codegen: add arithmetic tests for 386/amd64/arm/arm64
This CL adds several test cases of arithmetic operations for 386/amd64/arm/arm64. Change-Id: I362687c06249f31091458a1d8c45fc4d006b616a Reviewed-on: https://go-review.googlesource.com/c/151897 Run-TryBot: Ben Shi <powerman1st@163.com> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Keith Randall
|
0b79dde112 |
cmd/compile: don't use CMOV ops to compute load addresses
We want to issue loads as soon as possible, especially when they
are going to miss in the cache. Using a conditional move (CMOV) here:
i := ...
if cond {
i++
}
... = a[i]
means that we have to wait for cond to be computed before the load
is issued. Without a CMOV, if the branch is predicted correctly the
load can be issued in parallel with computing cond.
Even if the branch is predicted incorrectly, maybe the speculative
load is close to the real load, and we get a prefetch for free.
In the worst case, when the prediction is wrong and the address is
way off, we only lose by the time difference between the CMOV
latency (~2 cycles) and the mispredict restart latency (~15 cycles).
We only squash CMOVs that affect load addresses. Results of CMOVs
that are used for other things (store addresses, store values) we
use as before.
Fixes #26306
Change-Id: I82ca14b664bf05e1d45e58de8c4d9c775a127ca1
Reviewed-on: https://go-review.googlesource.com/c/145717
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
|
||
|
Brian Kessler
|
319787a528 |
cmd/compile: intrinsify math/bits.Div on amd64
Note that the intrinsic implementation panics separately for overflow and divide by zero, which matches the behavior of the pure go implementation. There is a modest performance improvement after intrinsic implementation. name old time/op new time/op delta Div-4 53.0ns ± 1% 47.0ns ± 0% -11.28% (p=0.008 n=5+5) Div32-4 18.4ns ± 0% 18.5ns ± 1% ~ (p=0.444 n=5+5) Div64-4 53.3ns ± 0% 47.5ns ± 4% -10.77% (p=0.008 n=5+5) Updates #28273 Change-Id: Ic1688ecc0964acace2e91bf44ef16f5fb6b6bc82 Reviewed-on: https://go-review.googlesource.com/c/144378 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
Martin Möhrmann
|
75798e8ada |
runtime: make processor capability variable naming platform specific
The current support_XXX variables are specific for the amd64 and 386 platforms. Prefix processor capability variables by architecture to have a consistent naming scheme and avoid reuse of the existing variables for new platforms. This also aligns naming of runtime variables closer with internal/cpu processor capability variable names. Change-Id: I3eabb29a03874678851376185d3a62e73c1aff1d Reviewed-on: https://go-review.googlesource.com/c/91435 Run-TryBot: Martin Möhrmann <martisch@uos.de> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Lynn Boger
|
4ae49b5921 |
cmd/compile: use ANDCC, ORCC, XORCC to avoid CMP on ppc64x
This change makes use of the cc versions of the AND, OR, XOR instructions, omitting the need for a CMP instruction. In many test programs and in the go binary, this reduces the size of 20-30 functions by at least 1 instruction, many in runtime. Testcase added to test/codegen/comparisons.go Change-Id: I6cc1ca8b80b065d7390749c625bc9784b0039adb Reviewed-on: https://go-review.googlesource.com/c/143059 Reviewed-by: Carlos Eduardo Seo <cseo@linux.vnet.ibm.com> Reviewed-by: Michael Munday <mike.munday@ibm.com> Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
||
|
Keith Randall
|
0ad332d80c |
cmd/compile: implement some moves using non-overlapping reads&writes
For moves >8,<16 bytes, do a move using non-overlapping loads/stores if it would require no more instructions. This helps a bit with the case when the move is from a static constant, because then the code to materialize the value being moved is smaller. Change-Id: Ie47a5a7c654afeb4973142b0a9922faea13c9b54 Reviewed-on: https://go-review.googlesource.com/c/146019 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
455ef3f6bc |
test/codegen: improve arithmetic tests
This CL fixes several typos and adds two more cases to arithmetic test. Change-Id: I086560162ea351e2166866e444e2317da36c1729 Reviewed-on: https://go-review.googlesource.com/c/145210 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
5f5ea3fd4d |
cmd/compile: optimize amd64's ADDQconstmodify/ADDLconstmodify
This CL optimize amd64's code: "ADDQ $-1, MEM_OP" -> "DECQ MEM_OP" "ADDL $-1, MEM_OP" -> "DECL MEM_OP" 1. The total size of pkg/linux_amd64 (excluding cmd/compile) decreases about 0.1KB. 2. The go1 benchmark shows little regression, excluding noise. name old time/op new time/op delta BinaryTree17-4 2.60s ± 5% 2.64s ± 3% +1.53% (p=0.000 n=38+39) Fannkuch11-4 2.37s ± 2% 2.38s ± 2% ~ (p=0.950 n=40+40) FmtFprintfEmpty-4 40.4ns ± 5% 40.5ns ± 5% ~ (p=0.711 n=40+40) FmtFprintfString-4 72.4ns ± 5% 72.3ns ± 3% ~ (p=0.485 n=40+40) FmtFprintfInt-4 79.7ns ± 3% 80.1ns ± 3% ~ (p=0.124 n=40+40) FmtFprintfIntInt-4 126ns ± 3% 127ns ± 3% +0.71% (p=0.027 n=40+40) FmtFprintfPrefixedInt-4 153ns ± 4% 153ns ± 2% ~ (p=0.604 n=40+40) FmtFprintfFloat-4 206ns ± 5% 210ns ± 5% +1.79% (p=0.002 n=40+40) FmtManyArgs-4 498ns ± 3% 496ns ± 3% ~ (p=0.099 n=40+40) GobDecode-4 6.48ms ± 6% 6.47ms ± 7% ~ (p=0.686 n=39+40) GobEncode-4 5.95ms ± 7% 5.96ms ± 6% ~ (p=0.670 n=40+34) Gzip-4 224ms ± 6% 223ms ± 5% ~ (p=0.143 n=40+40) Gunzip-4 36.5ms ± 4% 36.5ms ± 4% ~ (p=0.556 n=40+40) HTTPClientServer-4 60.7µs ± 2% 59.9µs ± 3% -1.20% (p=0.000 n=39+39) JSONEncode-4 9.03ms ± 4% 9.04ms ± 4% ~ (p=0.589 n=40+40) JSONDecode-4 49.4ms ± 4% 49.2ms ± 4% ~ (p=0.276 n=40+40) Mandelbrot200-4 3.80ms ± 4% 3.79ms ± 4% ~ (p=0.837 n=40+40) GoParse-4 3.15ms ± 5% 3.13ms ± 5% ~ (p=0.240 n=40+40) RegexpMatchEasy0_32-4 72.9ns ± 3% 72.0ns ± 8% -1.25% (p=0.003 n=40+40) RegexpMatchEasy0_1K-4 229ns ± 5% 230ns ± 4% ~ (p=0.318 n=40+40) RegexpMatchEasy1_32-4 66.9ns ± 3% 67.3ns ± 7% ~ (p=0.817 n=40+40) RegexpMatchEasy1_1K-4 371ns ± 5% 370ns ± 4% ~ (p=0.275 n=40+40) RegexpMatchMedium_32-4 106ns ± 4% 104ns ± 7% -2.28% (p=0.000 n=40+40) RegexpMatchMedium_1K-4 32.0µs ± 2% 31.4µs ± 3% -2.08% (p=0.000 n=40+40) RegexpMatchHard_32-4 1.54µs ± 7% 1.52µs ± 3% -1.80% (p=0.007 n=39+40) RegexpMatchHard_1K-4 45.8µs ± 4% 45.5µs ± 3% ~ (p=0.707 n=40+40) Revcomp-4 401ms ± 5% 401ms ± 6% ~ (p=0.935 n=40+40) Template-4 62.4ms ± 4% 61.2ms ± 3% -1.85% (p=0.000 n=40+40) TimeParse-4 315ns ± 2% 318ns ± 3% +1.10% (p=0.002 n=40+40) TimeFormat-4 297ns ± 3% 298ns ± 3% ~ (p=0.238 n=40+40) [Geo mean] 45.8µs 45.7µs -0.22% name old speed new speed delta GobDecode-4 119MB/s ± 6% 119MB/s ± 7% ~ (p=0.684 n=39+40) GobEncode-4 129MB/s ± 7% 128MB/s ± 6% ~ (p=0.413 n=40+34) Gzip-4 86.6MB/s ± 6% 87.0MB/s ± 6% ~ (p=0.145 n=40+40) Gunzip-4 532MB/s ± 4% 532MB/s ± 4% ~ (p=0.556 n=40+40) JSONEncode-4 215MB/s ± 4% 215MB/s ± 4% ~ (p=0.583 n=40+40) JSONDecode-4 39.3MB/s ± 4% 39.5MB/s ± 4% ~ (p=0.277 n=40+40) GoParse-4 18.4MB/s ± 5% 18.5MB/s ± 5% ~ (p=0.229 n=40+40) RegexpMatchEasy0_32-4 439MB/s ± 3% 445MB/s ± 8% +1.28% (p=0.003 n=40+40) RegexpMatchEasy0_1K-4 4.46GB/s ± 4% 4.45GB/s ± 4% ~ (p=0.343 n=40+40) RegexpMatchEasy1_32-4 479MB/s ± 3% 476MB/s ± 7% ~ (p=0.855 n=40+40) RegexpMatchEasy1_1K-4 2.76GB/s ± 5% 2.77GB/s ± 4% ~ (p=0.250 n=40+40) RegexpMatchMedium_32-4 9.36MB/s ± 4% 9.58MB/s ± 6% +2.31% (p=0.001 n=40+40) RegexpMatchMedium_1K-4 32.0MB/s ± 2% 32.7MB/s ± 3% +2.12% (p=0.000 n=40+40) RegexpMatchHard_32-4 20.7MB/s ± 7% 21.1MB/s ± 3% +1.95% (p=0.005 n=40+40) RegexpMatchHard_1K-4 22.4MB/s ± 4% 22.5MB/s ± 3% ~ (p=0.689 n=40+40) Revcomp-4 634MB/s ± 5% 634MB/s ± 6% ~ (p=0.935 n=40+40) Template-4 31.1MB/s ± 3% 31.7MB/s ± 3% +1.88% (p=0.000 n=40+40) [Geo mean] 129MB/s 130MB/s +0.62% Change-Id: I9d61ee810d900920c572cbe89e2f1626bfed12b7 Reviewed-on: https://go-review.googlesource.com/c/145209 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Keith Randall
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9f291d1fc3 |
cmd/compile: fix rule for combining loads with compares
Unlike normal load+op opcodes, the load+compare opcode does not clobber its non-load argument. Allow the load+compare merge to happen even if the non-load argument is used elsewhere. Noticed when investigating issue #28417. Change-Id: Ibc48d1f2e06ae76034c59f453815d263e8ec7288 Reviewed-on: https://go-review.googlesource.com/c/145097 Reviewed-by: Ainar Garipov <gugl.zadolbal@gmail.com> Reviewed-by: Ben Shi <powerman1st@163.com> |
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Keith Randall
|
dd789550a7 |
cmd/compile: intrinsify math/bits.Sub on amd64
name old time/op new time/op delta Sub-8 1.12ns ± 1% 1.17ns ± 1% +5.20% (p=0.008 n=5+5) Sub32-8 1.11ns ± 0% 1.11ns ± 0% ~ (all samples are equal) Sub64-8 1.12ns ± 0% 1.18ns ± 1% +5.00% (p=0.016 n=4+5) Sub64multiple-8 4.10ns ± 1% 0.86ns ± 1% -78.93% (p=0.008 n=5+5) Fixes #28273 Change-Id: Ibcb6f2fd32d987c3bcbae4f4cd9d335a3de98548 Reviewed-on: https://go-review.googlesource.com/c/144258 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Keith Randall
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899f3a2892 |
cmd/compile: intrinsify math/bits.Add on amd64
name old time/op new time/op delta Add-8 1.11ns ± 0% 1.18ns ± 0% +6.31% (p=0.029 n=4+4) Add32-8 1.02ns ± 0% 1.02ns ± 1% ~ (p=0.333 n=4+5) Add64-8 1.11ns ± 1% 1.17ns ± 0% +5.79% (p=0.008 n=5+5) Add64multiple-8 4.35ns ± 1% 0.86ns ± 0% -80.22% (p=0.000 n=5+4) The individual ops are a bit slower (but still very fast). Using the ops in carry chains is very fast. Update #28273 Change-Id: Id975f76df2b930abf0e412911d327b6c5b1befe5 Reviewed-on: https://go-review.googlesource.com/c/144257 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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ChrisALiles
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13d5cd7847 |
cmd/compile: use proved bounds to remove signed division fix-ups
prove is able to find 94 occurrences in std cmd where a divisor can't have the value -1. The change removes the extraneous fix-up code for these cases. Fixes #25239 Change-Id: Ic184de971f47cc57c702eb72805b8e291c14035d Reviewed-on: https://go-review.googlesource.com/c/130215 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
|
95dda75bde |
cmd/compile: optimize store combination on 386/amd64
This CL add 3 rules to combine byte-store to word-store on386 and amd64. Change-Id: Iffd9cda42f1961680c81def4edc773ad58f211b3 Reviewed-on: https://go-review.googlesource.com/c/143057 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
|
4158734097 |
test/codegen: add more combined load/store test cases
This CL adds more combined load/store test cases for 386/amd64. Change-Id: I0a483a6ed0212b65c5e84d67ed8c9f50c389ce2d Reviewed-on: https://go-review.googlesource.com/c/142878 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Lynn Boger
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39fa301bdc |
test/codegen: enable more tests for ppc64/ppc64le
Adding cases for ppc64,ppc64le to the codegen tests where appropriate. Change-Id: Idf8cbe88a4ab4406a4ef1ea777bd15a58b68f3ed Reviewed-on: https://go-review.googlesource.com/c/142557 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Ben Shi
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4b78fe57a8 |
cmd/compile: optimize 386's load/store combination
This CL adds more combinations of two consequtive MOVBload/MOVBstore to a unique MOVWload/MOVWstore. 1. The size of the go executable decreases about 4KB, and the total size of pkg/linux_386 (excluding cmd/compile) decreases about 1.5KB. 2. There is no regression in the go1 benchmark result, excluding noise. name old time/op new time/op delta BinaryTree17-4 3.28s ± 2% 3.29s ± 2% ~ (p=0.151 n=40+40) Fannkuch11-4 3.52s ± 1% 3.51s ± 1% -0.28% (p=0.002 n=40+40) FmtFprintfEmpty-4 45.4ns ± 4% 45.0ns ± 4% -0.89% (p=0.019 n=40+40) FmtFprintfString-4 81.9ns ± 7% 81.3ns ± 1% ~ (p=0.660 n=40+25) FmtFprintfInt-4 91.9ns ± 9% 91.4ns ± 9% ~ (p=0.249 n=40+40) FmtFprintfIntInt-4 143ns ± 4% 143ns ± 4% ~ (p=0.760 n=40+40) FmtFprintfPrefixedInt-4 184ns ± 3% 183ns ± 4% ~ (p=0.485 n=40+40) FmtFprintfFloat-4 408ns ± 3% 409ns ± 3% ~ (p=0.961 n=40+40) FmtManyArgs-4 597ns ± 4% 602ns ± 3% ~ (p=0.413 n=40+40) GobDecode-4 7.13ms ± 6% 7.14ms ± 6% ~ (p=0.859 n=40+40) GobEncode-4 6.86ms ± 9% 6.94ms ± 7% ~ (p=0.162 n=40+40) Gzip-4 395ms ± 4% 396ms ± 3% ~ (p=0.099 n=40+40) Gunzip-4 40.9ms ± 4% 41.1ms ± 3% ~ (p=0.064 n=40+40) HTTPClientServer-4 63.6µs ± 2% 63.6µs ± 3% ~ (p=0.832 n=36+39) JSONEncode-4 16.1ms ± 3% 15.8ms ± 3% -1.60% (p=0.001 n=40+40) JSONDecode-4 61.0ms ± 3% 61.5ms ± 4% ~ (p=0.065 n=40+40) Mandelbrot200-4 5.16ms ± 3% 5.18ms ± 3% ~ (p=0.056 n=40+40) GoParse-4 3.25ms ± 2% 3.23ms ± 3% ~ (p=0.727 n=40+40) RegexpMatchEasy0_32-4 90.2ns ± 3% 89.3ns ± 6% -0.98% (p=0.002 n=40+40) RegexpMatchEasy0_1K-4 812ns ± 3% 815ns ± 3% ~ (p=0.309 n=40+40) RegexpMatchEasy1_32-4 103ns ± 6% 103ns ± 5% ~ (p=0.680 n=40+40) RegexpMatchEasy1_1K-4 1.01µs ± 4% 1.02µs ± 3% ~ (p=0.326 n=40+33) RegexpMatchMedium_32-4 120ns ± 4% 120ns ± 5% ~ (p=0.834 n=40+40) RegexpMatchMedium_1K-4 40.1µs ± 3% 39.5µs ± 4% -1.35% (p=0.000 n=40+40) RegexpMatchHard_32-4 2.27µs ± 6% 2.23µs ± 4% -1.67% (p=0.011 n=40+40) RegexpMatchHard_1K-4 67.2µs ± 3% 67.2µs ± 3% ~ (p=0.149 n=40+40) Revcomp-4 1.84s ± 2% 1.86s ± 3% +0.70% (p=0.020 n=40+40) Template-4 69.0ms ± 4% 69.8ms ± 3% +1.20% (p=0.003 n=40+40) TimeParse-4 438ns ± 3% 439ns ± 4% ~ (p=0.650 n=40+40) TimeFormat-4 412ns ± 3% 412ns ± 3% ~ (p=0.888 n=40+40) [Geo mean] 65.2µs 65.2µs -0.04% name old speed new speed delta GobDecode-4 108MB/s ± 6% 108MB/s ± 6% ~ (p=0.855 n=40+40) GobEncode-4 112MB/s ± 9% 111MB/s ± 8% ~ (p=0.159 n=40+40) Gzip-4 49.2MB/s ± 4% 49.1MB/s ± 3% ~ (p=0.102 n=40+40) Gunzip-4 474MB/s ± 3% 472MB/s ± 3% ~ (p=0.063 n=40+40) JSONEncode-4 121MB/s ± 3% 123MB/s ± 3% +1.62% (p=0.001 n=40+40) JSONDecode-4 31.9MB/s ± 3% 31.6MB/s ± 4% ~ (p=0.070 n=40+40) GoParse-4 17.9MB/s ± 2% 17.9MB/s ± 3% ~ (p=0.696 n=40+40) RegexpMatchEasy0_32-4 355MB/s ± 3% 358MB/s ± 5% +0.99% (p=0.002 n=40+40) RegexpMatchEasy0_1K-4 1.26GB/s ± 3% 1.26GB/s ± 3% ~ (p=0.381 n=40+40) RegexpMatchEasy1_32-4 310MB/s ± 5% 310MB/s ± 4% ~ (p=0.655 n=40+40) RegexpMatchEasy1_1K-4 1.01GB/s ± 4% 1.01GB/s ± 3% ~ (p=0.351 n=40+33) RegexpMatchMedium_32-4 8.32MB/s ± 4% 8.34MB/s ± 5% ~ (p=0.696 n=40+40) RegexpMatchMedium_1K-4 25.6MB/s ± 3% 25.9MB/s ± 4% +1.36% (p=0.000 n=40+40) RegexpMatchHard_32-4 14.1MB/s ± 6% 14.3MB/s ± 4% +1.64% (p=0.011 n=40+40) RegexpMatchHard_1K-4 15.2MB/s ± 3% 15.2MB/s ± 3% ~ (p=0.147 n=40+40) Revcomp-4 138MB/s ± 2% 137MB/s ± 3% -0.70% (p=0.021 n=40+40) Template-4 28.1MB/s ± 4% 27.8MB/s ± 3% -1.19% (p=0.003 n=40+40) [Geo mean] 83.7MB/s 83.7MB/s +0.03% Change-Id: I2a2b3a942b5c45467491515d201179fd192e65c9 Reviewed-on: https://go-review.googlesource.com/c/141650 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
|
3785be3093 |
test/codegen: fix confusing test cases
ARMv7's MULAF/MULSF/MULAD/MULSD are not fused, this CL fixes the confusing test cases. Change-Id: I35022e207e2f0d24a23a7f6f188e41ba8eee9886 Reviewed-on: https://go-review.googlesource.com/c/142439 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Akhil Indurti <aindurti@gmail.com> Reviewed-by: Giovanni Bajo <rasky@develer.com> |
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Martin Möhrmann
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a0f57c3fd0 |
cmd/compile: avoid string allocations when map key is struct or array literal
x = map[string(byteslice)] is already optimized by the compiler to avoid a
string allocation. This CL generalizes this optimization to:
x = map[T1{ ... Tn{..., string(byteslice), ...} ... }]
where T1 to Tn is a nesting of struct and array literals.
Found in a hot code path that used a struct of strings made from []byte
slices to make a map lookup.
There are no uses of the more generalized optimization in the standard library.
Passes toolstash -cmp.
MapStringConversion/32/simple 21.9ns ± 2% 21.9ns ± 3% ~ (p=0.995 n=17+20)
MapStringConversion/32/struct 28.8ns ± 3% 22.0ns ± 2% -23.80% (p=0.000 n=20+20)
MapStringConversion/32/array 28.5ns ± 2% 21.9ns ± 2% -23.14% (p=0.000 n=19+16)
MapStringConversion/64/simple 21.0ns ± 2% 21.1ns ± 3% ~ (p=0.072 n=19+18)
MapStringConversion/64/struct 72.4ns ± 3% 21.3ns ± 2% -70.53% (p=0.000 n=20+20)
MapStringConversion/64/array 72.8ns ± 1% 21.0ns ± 2% -71.13% (p=0.000 n=17+19)
name old allocs/op new allocs/op delta
MapStringConversion/32/simple 0.00 0.00 ~ (all equal)
MapStringConversion/32/struct 0.00 0.00 ~ (all equal)
MapStringConversion/32/array 0.00 0.00 ~ (all equal)
MapStringConversion/64/simple 0.00 0.00 ~ (all equal)
MapStringConversion/64/struct 1.00 ± 0% 0.00 -100.00% (p=0.000 n=20+20)
MapStringConversion/64/array 1.00 ± 0% 0.00 -100.00% (p=0.000 n=20+20)
Change-Id: I483b4d84d8d74b1025b62c954da9a365e79b7a3a
Reviewed-on: https://go-review.googlesource.com/c/116275
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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Alberto Donizetti
|
7c96d87eda |
test/codegen: test ppc64 TrailingZeros, OnesCount codegen
This change adds codegen tests for the intrinsification on ppc64 of
the OnesCount{64,32,16,8}, and TrailingZeros{64,32,16,8} math/bits
functions.
Change-Id: Id3364921fbd18316850e15c8c71330c906187fdb
Reviewed-on: https://go-review.googlesource.com/c/141897
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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Ben Shi
|
93e27e01af |
test/codegen: add tests of FMA for arm/arm64
This CL adds tests of fused multiplication-accumulation on arm/arm64. Change-Id: Ic85d5277c0d6acb7e1e723653372dfaf96824a39 Reviewed-on: https://go-review.googlesource.com/c/141652 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
c3208842e1 |
test/codegen: add tests for multiplication-subtraction
This CL adds tests for armv7's MULS and arm64's MSUBW. Change-Id: Id0fd5d26fd477e4ed14389b0d33cad930423eb5b Reviewed-on: https://go-review.googlesource.com/c/141651 Run-TryBot: Ben Shi <powerman1st@163.com> Reviewed-by: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Keith Randall
|
653a4bd8d4 |
cmd/compile: optimize loads from readonly globals into constants
Instead of MOVB go.string."foo"(SB), AX do MOVB $102, AX When we know the global we're loading from is readonly, we can do that read at compile time. I've made this arch-dependent mostly because the cases where this happens often are memory->memory moves, and those don't get decomposed until lowering. Did amd64/386/arm/arm64. Other architectures could follow. Update #26498 Change-Id: I41b1dc831b2cd0a52dac9b97f4f4457888a46389 Reviewed-on: https://go-review.googlesource.com/c/141118 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> |
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Ben Shi
|
bac6a2925c |
test/codegen: add more arm64 test cases
This CL adds 3 combined load test cases for arm64. Change-Id: I2c67308c40fd8a18f9f2d16c6d12911dcdc583e2 Reviewed-on: https://go-review.googlesource.com/c/140700 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Ben Shi
|
27965c1436 |
cmd/compile: optimize 386's ADDLconstmodifyidx4
This CL optimize ADDLconstmodifyidx4 to INCL/DECL, when the constant is +1/-1. 1. The total size of pkg/linux_386/ decreases 28 bytes, excluding cmd/compile. 2. There is no regression in the go1 benchmark test, excluding noise. name old time/op new time/op delta BinaryTree17-4 3.25s ± 2% 3.23s ± 3% -0.70% (p=0.040 n=30+30) Fannkuch11-4 3.50s ± 1% 3.47s ± 1% -0.68% (p=0.000 n=30+30) FmtFprintfEmpty-4 44.6ns ± 3% 44.8ns ± 3% +0.46% (p=0.029 n=30+30) FmtFprintfString-4 79.0ns ± 3% 78.7ns ± 3% ~ (p=0.053 n=30+30) FmtFprintfInt-4 89.2ns ± 2% 89.4ns ± 3% ~ (p=0.665 n=30+29) FmtFprintfIntInt-4 142ns ± 3% 142ns ± 3% ~ (p=0.435 n=30+30) FmtFprintfPrefixedInt-4 182ns ± 2% 182ns ± 2% ~ (p=0.964 n=30+30) FmtFprintfFloat-4 407ns ± 3% 411ns ± 4% ~ (p=0.080 n=30+30) FmtManyArgs-4 597ns ± 3% 593ns ± 4% ~ (p=0.222 n=30+30) GobDecode-4 7.09ms ± 6% 7.07ms ± 7% ~ (p=0.633 n=30+30) GobEncode-4 6.81ms ± 9% 6.81ms ± 8% ~ (p=0.982 n=30+30) Gzip-4 398ms ± 4% 400ms ± 6% ~ (p=0.177 n=30+30) Gunzip-4 41.3ms ± 3% 40.6ms ± 4% -1.71% (p=0.005 n=30+30) HTTPClientServer-4 63.4µs ± 3% 63.4µs ± 4% ~ (p=0.646 n=30+28) JSONEncode-4 16.0ms ± 3% 16.1ms ± 3% ~ (p=0.057 n=30+30) JSONDecode-4 63.3ms ± 8% 63.1ms ± 7% ~ (p=0.786 n=30+30) Mandelbrot200-4 5.17ms ± 3% 5.15ms ± 8% ~ (p=0.654 n=30+30) GoParse-4 3.24ms ± 3% 3.23ms ± 2% ~ (p=0.091 n=30+30) RegexpMatchEasy0_32-4 103ns ± 4% 103ns ± 4% ~ (p=0.575 n=30+30) RegexpMatchEasy0_1K-4 823ns ± 2% 821ns ± 3% ~ (p=0.827 n=30+30) RegexpMatchEasy1_32-4 113ns ± 3% 112ns ± 3% ~ (p=0.076 n=30+30) RegexpMatchEasy1_1K-4 1.02µs ± 4% 1.01µs ± 5% ~ (p=0.087 n=30+30) RegexpMatchMedium_32-4 129ns ± 3% 127ns ± 4% -1.55% (p=0.009 n=30+30) RegexpMatchMedium_1K-4 39.3µs ± 4% 39.7µs ± 3% ~ (p=0.054 n=30+30) RegexpMatchHard_32-4 2.15µs ± 4% 2.15µs ± 4% ~ (p=0.712 n=30+30) RegexpMatchHard_1K-4 66.0µs ± 3% 65.1µs ± 3% -1.32% (p=0.002 n=30+30) Revcomp-4 1.85s ± 2% 1.85s ± 3% ~ (p=0.168 n=30+30) Template-4 69.5ms ± 7% 68.9ms ± 6% ~ (p=0.250 n=28+28) TimeParse-4 434ns ± 3% 432ns ± 4% ~ (p=0.629 n=30+30) TimeFormat-4 403ns ± 4% 408ns ± 3% +1.23% (p=0.019 n=30+29) [Geo mean] 65.5µs 65.3µs -0.20% name old speed new speed delta GobDecode-4 108MB/s ± 6% 109MB/s ± 6% ~ (p=0.636 n=30+30) GobEncode-4 113MB/s ±10% 113MB/s ± 9% ~ (p=0.982 n=30+30) Gzip-4 48.8MB/s ± 4% 48.6MB/s ± 5% ~ (p=0.178 n=30+30) Gunzip-4 470MB/s ± 3% 479MB/s ± 4% +1.72% (p=0.006 n=30+30) JSONEncode-4 121MB/s ± 3% 120MB/s ± 3% ~ (p=0.057 n=30+30) JSONDecode-4 30.7MB/s ± 8% 30.8MB/s ± 8% ~ (p=0.784 n=30+30) GoParse-4 17.9MB/s ± 3% 17.9MB/s ± 2% ~ (p=0.090 n=30+30) RegexpMatchEasy0_32-4 309MB/s ± 4% 309MB/s ± 3% ~ (p=0.530 n=30+30) RegexpMatchEasy0_1K-4 1.24GB/s ± 2% 1.25GB/s ± 3% ~ (p=0.976 n=30+30) RegexpMatchEasy1_32-4 282MB/s ± 3% 284MB/s ± 3% +0.81% (p=0.041 n=30+30) RegexpMatchEasy1_1K-4 1.00GB/s ± 3% 1.01GB/s ± 4% ~ (p=0.091 n=30+30) RegexpMatchMedium_32-4 7.71MB/s ± 3% 7.84MB/s ± 4% +1.71% (p=0.000 n=30+30) RegexpMatchMedium_1K-4 26.1MB/s ± 4% 25.8MB/s ± 3% ~ (p=0.051 n=30+30) RegexpMatchHard_32-4 14.9MB/s ± 4% 14.9MB/s ± 4% ~ (p=0.712 n=30+30) RegexpMatchHard_1K-4 15.5MB/s ± 3% 15.7MB/s ± 3% +1.34% (p=0.003 n=30+30) Revcomp-4 138MB/s ± 2% 137MB/s ± 3% ~ (p=0.174 n=30+30) Template-4 28.0MB/s ± 6% 28.2MB/s ± 6% ~ (p=0.251 n=28+28) [Geo mean] 82.3MB/s 82.6MB/s +0.36% Change-Id: I389829699ffe9500a013fcf31be58a97e98043e1 Reviewed-on: https://go-review.googlesource.com/c/140701 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Keith Randall
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ceb0c371d9 |
cmd/compile: make []byte("...") more efficient
Do []byte(string) conversions more efficiently when the string
is a constant. Instead of calling stringtobyteslice, allocate
just the space we need and encode the initialization directly.
[]byte("foo") rewrites to the following pseudocode:
var s [3]byte // on heap or stack, depending on whether b escapes
s = *(*[3]byte)(&"foo"[0]) // initialize s from the string
b = s[:]
which generates this assembly:
0x001d 00029 (tmp1.go:9) LEAQ type.[3]uint8(SB), AX
0x0024 00036 (tmp1.go:9) MOVQ AX, (SP)
0x0028 00040 (tmp1.go:9) CALL runtime.newobject(SB)
0x002d 00045 (tmp1.go:9) MOVQ 8(SP), AX
0x0032 00050 (tmp1.go:9) MOVBLZX go.string."foo"+2(SB), CX
0x0039 00057 (tmp1.go:9) MOVWLZX go.string."foo"(SB), DX
0x0040 00064 (tmp1.go:9) MOVW DX, (AX)
0x0043 00067 (tmp1.go:9) MOVB CL, 2(AX)
// Then the slice is b = {AX, 3, 3}
The generated code is still not optimal, as it still does load/store
from read-only memory instead of constant stores. Next CL...
Update #26498
Fixes #10170
Change-Id: I4b990b19f9a308f60c8f4f148934acffefe0a5bd
Reviewed-on: https://go-review.googlesource.com/c/140698
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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Ben Shi
|
3933302550 |
cmd/compile: add indexed form for several 386 instructions
This CL implements indexed memory operands for the following instructions. (ADD|SUB|MUL|AND|OR|XOR)Lload -> (ADD|SUB|MUL|AND|OR|XOR)Lloadidx4 (ADD|SUB|AND|OR|XOR)Lmodify -> (ADD|SUB|AND|OR|XOR)Lmodifyidx4 (ADD|AND|OR|XOR)Lconstmodify -> (ADD|AND|OR|XOR)Lconstmodifyidx4 1. The total size of pkg/linux_386/ decreases about 2.5KB, excluding cmd/compile/ . 2. There is little regression in the go1 benchmark test, excluding noise. name old time/op new time/op delta BinaryTree17-4 3.25s ± 3% 3.25s ± 3% ~ (p=0.218 n=40+40) Fannkuch11-4 3.53s ± 1% 3.53s ± 1% ~ (p=0.303 n=40+40) FmtFprintfEmpty-4 44.9ns ± 3% 45.6ns ± 3% +1.48% (p=0.030 n=40+36) FmtFprintfString-4 78.7ns ± 5% 80.1ns ± 7% ~ (p=0.217 n=36+40) FmtFprintfInt-4 90.2ns ± 6% 89.8ns ± 5% ~ (p=0.659 n=40+38) FmtFprintfIntInt-4 140ns ± 5% 141ns ± 5% +1.00% (p=0.027 n=40+40) FmtFprintfPrefixedInt-4 185ns ± 3% 183ns ± 3% ~ (p=0.104 n=40+40) FmtFprintfFloat-4 411ns ± 4% 406ns ± 3% -1.37% (p=0.005 n=40+40) FmtManyArgs-4 590ns ± 4% 598ns ± 4% +1.35% (p=0.008 n=40+40) GobDecode-4 7.16ms ± 5% 7.10ms ± 5% ~ (p=0.335 n=40+40) GobEncode-4 6.85ms ± 7% 6.74ms ± 9% ~ (p=0.058 n=38+40) Gzip-4 400ms ± 4% 399ms ± 2% -0.34% (p=0.003 n=40+33) Gunzip-4 41.4ms ± 3% 41.4ms ± 4% -0.12% (p=0.020 n=40+40) HTTPClientServer-4 64.1µs ± 4% 63.5µs ± 2% -1.07% (p=0.000 n=39+37) JSONEncode-4 15.9ms ± 2% 15.9ms ± 3% ~ (p=0.103 n=40+40) JSONDecode-4 62.2ms ± 4% 61.6ms ± 3% -0.98% (p=0.006 n=39+40) Mandelbrot200-4 5.18ms ± 3% 5.14ms ± 4% ~ (p=0.125 n=40+40) GoParse-4 3.29ms ± 2% 3.27ms ± 2% -0.66% (p=0.006 n=40+40) RegexpMatchEasy0_32-4 103ns ± 4% 103ns ± 4% ~ (p=0.632 n=40+40) RegexpMatchEasy0_1K-4 830ns ± 3% 828ns ± 3% ~ (p=0.563 n=40+40) RegexpMatchEasy1_32-4 113ns ± 4% 113ns ± 4% ~ (p=0.494 n=40+40) RegexpMatchEasy1_1K-4 1.03µs ± 4% 1.03µs ± 4% ~ (p=0.665 n=40+40) RegexpMatchMedium_32-4 130ns ± 4% 129ns ± 3% ~ (p=0.458 n=40+40) RegexpMatchMedium_1K-4 39.4µs ± 3% 39.7µs ± 3% ~ (p=0.825 n=40+40) RegexpMatchHard_32-4 2.16µs ± 4% 2.15µs ± 4% ~ (p=0.137 n=40+40) RegexpMatchHard_1K-4 65.2µs ± 3% 65.4µs ± 4% ~ (p=0.160 n=40+40) Revcomp-4 1.87s ± 2% 1.87s ± 1% +0.17% (p=0.019 n=33+33) Template-4 69.4ms ± 3% 69.8ms ± 3% +0.60% (p=0.009 n=40+40) TimeParse-4 437ns ± 4% 438ns ± 4% ~ (p=0.234 n=40+40) TimeFormat-4 408ns ± 3% 408ns ± 3% ~ (p=0.904 n=40+40) [Geo mean] 65.7µs 65.6µs -0.08% name old speed new speed delta GobDecode-4 107MB/s ± 5% 108MB/s ± 5% ~ (p=0.336 n=40+40) GobEncode-4 112MB/s ± 6% 114MB/s ± 9% +1.95% (p=0.036 n=37+40) Gzip-4 48.5MB/s ± 4% 48.6MB/s ± 2% +0.28% (p=0.003 n=40+33) Gunzip-4 469MB/s ± 4% 469MB/s ± 4% +0.11% (p=0.021 n=40+40) JSONEncode-4 122MB/s ± 2% 122MB/s ± 3% ~ (p=0.105 n=40+40) JSONDecode-4 31.2MB/s ± 4% 31.5MB/s ± 4% +0.99% (p=0.007 n=39+40) GoParse-4 17.6MB/s ± 2% 17.7MB/s ± 2% +0.66% (p=0.007 n=40+40) RegexpMatchEasy0_32-4 310MB/s ± 4% 310MB/s ± 4% ~ (p=0.384 n=40+40) RegexpMatchEasy0_1K-4 1.23GB/s ± 3% 1.24GB/s ± 3% ~ (p=0.186 n=40+40) RegexpMatchEasy1_32-4 283MB/s ± 3% 281MB/s ± 4% ~ (p=0.855 n=40+40) RegexpMatchEasy1_1K-4 1.00GB/s ± 4% 1.00GB/s ± 4% ~ (p=0.665 n=40+40) RegexpMatchMedium_32-4 7.68MB/s ± 4% 7.73MB/s ± 3% ~ (p=0.359 n=40+40) RegexpMatchMedium_1K-4 26.0MB/s ± 3% 25.8MB/s ± 3% ~ (p=0.825 n=40+40) RegexpMatchHard_32-4 14.8MB/s ± 3% 14.9MB/s ± 4% ~ (p=0.136 n=40+40) RegexpMatchHard_1K-4 15.7MB/s ± 3% 15.7MB/s ± 4% ~ (p=0.150 n=40+40) Revcomp-4 136MB/s ± 1% 136MB/s ± 1% -0.09% (p=0.028 n=32+33) Template-4 28.0MB/s ± 3% 27.8MB/s ± 3% -0.59% (p=0.010 n=40+40) [Geo mean] 82.1MB/s 82.3MB/s +0.25% Change-Id: Ifa387a251056678326d3508aa02753b70bf7e5d0 Reviewed-on: https://go-review.googlesource.com/c/140303 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Carlos Eduardo Seo
|
9aed4cc395 |
cmd/compile: instrinsify math/bits.Mul on ppc64x
Add SSA rules to intrinsify Mul/Mul64 on ppc64x. benchmark old ns/op new ns/op delta BenchmarkMul-40 8.80 0.93 -89.43% BenchmarkMul32-40 1.39 1.39 +0.00% BenchmarkMul64-40 5.39 0.93 -82.75% Updates #24813 Change-Id: I6e95bfbe976a2278bd17799df184a7fbc0e57829 Reviewed-on: https://go-review.googlesource.com/138917 Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> |
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Ben Shi
|
5aeecc4530 |
cmd/compile: optimize arm64's code with more shifted operations
This CL optimizes arm64's NEG/MVN/TST/CMN with a shifted operand. 1. The total size of pkg/android_arm64 decreases about 0.2KB, excluding cmd/compile/ . 2. The go1 benchmark shows no regression, excluding noise. name old time/op new time/op delta BinaryTree17-4 16.4s ± 1% 16.4s ± 1% ~ (p=0.914 n=29+29) Fannkuch11-4 8.72s ± 0% 8.72s ± 0% ~ (p=0.274 n=30+29) FmtFprintfEmpty-4 174ns ± 0% 174ns ± 0% ~ (all equal) FmtFprintfString-4 370ns ± 0% 370ns ± 0% ~ (all equal) FmtFprintfInt-4 419ns ± 0% 419ns ± 0% ~ (all equal) FmtFprintfIntInt-4 672ns ± 1% 675ns ± 2% ~ (p=0.217 n=28+30) FmtFprintfPrefixedInt-4 806ns ± 0% 806ns ± 0% ~ (p=0.402 n=30+28) FmtFprintfFloat-4 1.09µs ± 0% 1.09µs ± 0% +0.02% (p=0.011 n=22+27) FmtManyArgs-4 2.67µs ± 0% 2.68µs ± 0% ~ (p=0.279 n=29+30) GobDecode-4 33.1ms ± 1% 33.1ms ± 0% ~ (p=0.052 n=28+29) GobEncode-4 29.6ms ± 0% 29.6ms ± 0% +0.08% (p=0.013 n=28+29) Gzip-4 1.38s ± 2% 1.39s ± 2% ~ (p=0.071 n=29+29) Gunzip-4 139ms ± 0% 139ms ± 0% ~ (p=0.265 n=29+29) HTTPClientServer-4 789µs ± 4% 785µs ± 4% ~ (p=0.206 n=29+28) JSONEncode-4 49.7ms ± 0% 49.6ms ± 0% -0.24% (p=0.000 n=30+30) JSONDecode-4 266ms ± 1% 267ms ± 1% +0.34% (p=0.000 n=30+30) Mandelbrot200-4 16.6ms ± 0% 16.6ms ± 0% ~ (p=0.835 n=28+30) GoParse-4 15.9ms ± 0% 15.8ms ± 0% -0.29% (p=0.000 n=27+30) RegexpMatchEasy0_32-4 380ns ± 0% 381ns ± 0% +0.18% (p=0.000 n=30+30) RegexpMatchEasy0_1K-4 1.18µs ± 0% 1.19µs ± 0% +0.23% (p=0.000 n=30+30) RegexpMatchEasy1_32-4 357ns ± 0% 358ns ± 0% +0.28% (p=0.000 n=29+29) RegexpMatchEasy1_1K-4 2.04µs ± 0% 2.04µs ± 0% +0.06% (p=0.006 n=30+30) RegexpMatchMedium_32-4 589ns ± 0% 590ns ± 0% +0.24% (p=0.000 n=28+30) RegexpMatchMedium_1K-4 162µs ± 0% 162µs ± 0% -0.01% (p=0.027 n=26+29) RegexpMatchHard_32-4 9.58µs ± 0% 9.58µs ± 0% ~ (p=0.935 n=30+30) RegexpMatchHard_1K-4 287µs ± 0% 287µs ± 0% ~ (p=0.387 n=29+30) Revcomp-4 2.50s ± 0% 2.50s ± 0% -0.10% (p=0.020 n=28+28) Template-4 310ms ± 0% 310ms ± 1% ~ (p=0.406 n=30+30) TimeParse-4 1.68µs ± 0% 1.68µs ± 0% +0.03% (p=0.014 n=30+17) TimeFormat-4 1.65µs ± 0% 1.66µs ± 0% +0.32% (p=0.000 n=27+29) [Geo mean] 247µs 247µs +0.05% name old speed new speed delta GobDecode-4 23.2MB/s ± 0% 23.2MB/s ± 0% -0.08% (p=0.032 n=27+29) GobEncode-4 26.0MB/s ± 0% 25.9MB/s ± 0% -0.10% (p=0.011 n=29+29) Gzip-4 14.1MB/s ± 2% 14.0MB/s ± 2% ~ (p=0.081 n=29+29) Gunzip-4 139MB/s ± 0% 139MB/s ± 0% ~ (p=0.290 n=29+29) JSONEncode-4 39.0MB/s ± 0% 39.1MB/s ± 0% +0.25% (p=0.000 n=29+30) JSONDecode-4 7.30MB/s ± 1% 7.28MB/s ± 1% -0.33% (p=0.000 n=30+30) GoParse-4 3.65MB/s ± 0% 3.66MB/s ± 0% +0.29% (p=0.000 n=27+30) RegexpMatchEasy0_32-4 84.1MB/s ± 0% 84.0MB/s ± 0% -0.17% (p=0.000 n=30+28) RegexpMatchEasy0_1K-4 864MB/s ± 0% 862MB/s ± 0% -0.24% (p=0.000 n=30+30) RegexpMatchEasy1_32-4 89.5MB/s ± 0% 89.3MB/s ± 0% -0.18% (p=0.000 n=28+24) RegexpMatchEasy1_1K-4 502MB/s ± 0% 502MB/s ± 0% -0.05% (p=0.008 n=30+29) RegexpMatchMedium_32-4 1.70MB/s ± 0% 1.69MB/s ± 0% -0.59% (p=0.000 n=29+30) RegexpMatchMedium_1K-4 6.31MB/s ± 0% 6.31MB/s ± 0% +0.05% (p=0.005 n=30+26) RegexpMatchHard_32-4 3.34MB/s ± 0% 3.34MB/s ± 0% ~ (all equal) RegexpMatchHard_1K-4 3.57MB/s ± 0% 3.57MB/s ± 0% ~ (all equal) Revcomp-4 102MB/s ± 0% 102MB/s ± 0% +0.10% (p=0.022 n=28+28) Template-4 6.26MB/s ± 0% 6.26MB/s ± 1% ~ (p=0.768 n=30+30) [Geo mean] 24.2MB/s 24.1MB/s -0.08% Change-Id: I494f9db7f8a568a00e9c74ae25086a58b2221683 Reviewed-on: https://go-review.googlesource.com/137976 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
d60cf39f8e |
cmd/compile: optimize arm64's MADD and MSUB
This CL implements constant folding for MADD/MSUB on arm64. 1. The total size of pkg/android_arm64/ decreases about 4KB, excluding cmd/compile/ . 2. There is no regression in the go1 benchmark, excluding noise. name old time/op new time/op delta BinaryTree17-4 16.4s ± 1% 16.5s ± 1% +0.24% (p=0.008 n=29+29) Fannkuch11-4 8.73s ± 0% 8.71s ± 0% -0.15% (p=0.000 n=29+29) FmtFprintfEmpty-4 174ns ± 0% 174ns ± 0% ~ (all equal) FmtFprintfString-4 370ns ± 0% 372ns ± 2% +0.53% (p=0.007 n=24+30) FmtFprintfInt-4 419ns ± 0% 419ns ± 0% ~ (all equal) FmtFprintfIntInt-4 673ns ± 1% 661ns ± 1% -1.81% (p=0.000 n=30+27) FmtFprintfPrefixedInt-4 806ns ± 0% 805ns ± 0% ~ (p=0.957 n=28+27) FmtFprintfFloat-4 1.09µs ± 0% 1.09µs ± 0% -0.04% (p=0.001 n=22+30) FmtManyArgs-4 2.67µs ± 0% 2.68µs ± 0% +0.03% (p=0.045 n=29+28) GobDecode-4 33.2ms ± 1% 32.5ms ± 1% -2.11% (p=0.000 n=29+29) GobEncode-4 29.5ms ± 0% 29.2ms ± 0% -1.04% (p=0.000 n=28+28) Gzip-4 1.39s ± 2% 1.38s ± 1% -0.48% (p=0.023 n=30+30) Gunzip-4 139ms ± 0% 139ms ± 0% ~ (p=0.616 n=30+28) HTTPClientServer-4 766µs ± 4% 758µs ± 3% -1.03% (p=0.013 n=28+29) JSONEncode-4 49.7ms ± 0% 49.6ms ± 0% -0.24% (p=0.000 n=30+30) JSONDecode-4 266ms ± 0% 268ms ± 1% +1.07% (p=0.000 n=29+30) Mandelbrot200-4 16.6ms ± 0% 16.6ms ± 0% ~ (p=0.248 n=30+29) GoParse-4 15.9ms ± 0% 16.0ms ± 0% +0.76% (p=0.000 n=29+29) RegexpMatchEasy0_32-4 381ns ± 0% 380ns ± 0% -0.14% (p=0.000 n=30+30) RegexpMatchEasy0_1K-4 1.18µs ± 0% 1.19µs ± 1% +0.30% (p=0.000 n=29+30) RegexpMatchEasy1_32-4 357ns ± 0% 357ns ± 0% ~ (all equal) RegexpMatchEasy1_1K-4 2.04µs ± 0% 2.05µs ± 0% +0.50% (p=0.000 n=26+28) RegexpMatchMedium_32-4 590ns ± 0% 589ns ± 0% -0.12% (p=0.000 n=30+23) RegexpMatchMedium_1K-4 162µs ± 0% 162µs ± 0% ~ (p=0.318 n=28+25) RegexpMatchHard_32-4 9.56µs ± 0% 9.56µs ± 0% ~ (p=0.072 n=30+29) RegexpMatchHard_1K-4 287µs ± 0% 287µs ± 0% -0.02% (p=0.005 n=28+28) Revcomp-4 2.50s ± 0% 2.51s ± 0% ~ (p=0.246 n=29+29) Template-4 312ms ± 1% 313ms ± 1% +0.46% (p=0.002 n=30+30) TimeParse-4 1.68µs ± 0% 1.67µs ± 0% -0.31% (p=0.000 n=27+29) TimeFormat-4 1.66µs ± 0% 1.64µs ± 0% -0.92% (p=0.000 n=29+26) [Geo mean] 247µs 246µs -0.15% name old speed new speed delta GobDecode-4 23.1MB/s ± 1% 23.6MB/s ± 0% +2.17% (p=0.000 n=29+28) GobEncode-4 26.0MB/s ± 0% 26.3MB/s ± 0% +1.05% (p=0.000 n=28+28) Gzip-4 14.0MB/s ± 2% 14.1MB/s ± 1% +0.47% (p=0.026 n=30+30) Gunzip-4 139MB/s ± 0% 139MB/s ± 0% ~ (p=0.624 n=30+28) JSONEncode-4 39.1MB/s ± 0% 39.2MB/s ± 0% +0.24% (p=0.000 n=30+30) JSONDecode-4 7.31MB/s ± 0% 7.23MB/s ± 1% -1.07% (p=0.000 n=28+30) GoParse-4 3.65MB/s ± 0% 3.62MB/s ± 0% -0.77% (p=0.000 n=29+29) RegexpMatchEasy0_32-4 84.0MB/s ± 0% 84.1MB/s ± 0% +0.18% (p=0.000 n=28+30) RegexpMatchEasy0_1K-4 864MB/s ± 0% 861MB/s ± 1% -0.29% (p=0.000 n=29+30) RegexpMatchEasy1_32-4 89.5MB/s ± 0% 89.5MB/s ± 0% ~ (p=0.841 n=28+28) RegexpMatchEasy1_1K-4 502MB/s ± 0% 500MB/s ± 0% -0.51% (p=0.000 n=29+29) RegexpMatchMedium_32-4 1.69MB/s ± 0% 1.70MB/s ± 0% +0.41% (p=0.000 n=26+30) RegexpMatchMedium_1K-4 6.31MB/s ± 0% 6.30MB/s ± 0% ~ (p=0.129 n=30+25) RegexpMatchHard_32-4 3.35MB/s ± 0% 3.35MB/s ± 0% ~ (p=0.657 n=30+29) RegexpMatchHard_1K-4 3.57MB/s ± 0% 3.57MB/s ± 0% ~ (all equal) Revcomp-4 102MB/s ± 0% 101MB/s ± 0% ~ (p=0.213 n=29+29) Template-4 6.22MB/s ± 1% 6.19MB/s ± 1% -0.42% (p=0.005 n=30+29) [Geo mean] 24.1MB/s 24.2MB/s +0.08% Change-Id: I6c02d3c9975f6bd8bc215cb1fc14d29602b45649 Reviewed-on: https://go-review.googlesource.com/138095 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Brian Kessler
|
9eb53ab9bc |
cmd/compile: intrinsify math/bits.Mul
Add SSA rules to intrinsify Mul/Mul64 (AMD64 and ARM64). SSA rules for other functions and architectures are left as a future optimization. Benchmark results on AMD64/ARM64 before and after SSA implementation are below. amd64 name old time/op new time/op delta Add-4 1.78ns ± 0% 1.85ns ±12% ~ (p=0.397 n=4+5) Add32-4 1.71ns ± 1% 1.70ns ± 0% ~ (p=0.683 n=5+5) Add64-4 1.80ns ± 2% 1.77ns ± 0% -1.22% (p=0.048 n=5+5) Sub-4 1.78ns ± 0% 1.78ns ± 0% ~ (all equal) Sub32-4 1.78ns ± 1% 1.78ns ± 0% ~ (p=1.000 n=5+5) Sub64-4 1.78ns ± 1% 1.78ns ± 0% ~ (p=0.968 n=5+4) Mul-4 11.5ns ± 1% 1.8ns ± 2% -84.39% (p=0.008 n=5+5) Mul32-4 1.39ns ± 0% 1.38ns ± 3% ~ (p=0.175 n=5+5) Mul64-4 6.85ns ± 1% 1.78ns ± 1% -73.97% (p=0.008 n=5+5) Div-4 57.1ns ± 1% 56.7ns ± 0% ~ (p=0.087 n=5+5) Div32-4 18.0ns ± 0% 18.0ns ± 0% ~ (all equal) Div64-4 56.4ns ±10% 53.6ns ± 1% ~ (p=0.071 n=5+5) arm64 name old time/op new time/op delta Add-96 5.51ns ± 0% 5.51ns ± 0% ~ (all equal) Add32-96 5.51ns ± 0% 5.51ns ± 0% ~ (all equal) Add64-96 5.52ns ± 0% 5.51ns ± 0% ~ (p=0.444 n=5+5) Sub-96 5.51ns ± 0% 5.51ns ± 0% ~ (all equal) Sub32-96 5.51ns ± 0% 5.51ns ± 0% ~ (all equal) Sub64-96 5.51ns ± 0% 5.51ns ± 0% ~ (all equal) Mul-96 34.6ns ± 0% 5.0ns ± 0% -85.52% (p=0.008 n=5+5) Mul32-96 4.51ns ± 0% 4.51ns ± 0% ~ (all equal) Mul64-96 21.1ns ± 0% 5.0ns ± 0% -76.26% (p=0.008 n=5+5) Div-96 64.7ns ± 0% 64.7ns ± 0% ~ (all equal) Div32-96 17.0ns ± 0% 17.0ns ± 0% ~ (all equal) Div64-96 53.1ns ± 0% 53.1ns ± 0% ~ (all equal) Updates #24813 Change-Id: I9bda6d2102f65cae3d436a2087b47ed8bafeb068 Reviewed-on: https://go-review.googlesource.com/129415 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Iskander Sharipov
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c03d0e4fec |
cmd/compile/internal/gc: handle arith ops in samesafeexpr
Teach samesafeexpr to handle arithmetic unary and binary ops. It makes map lookup optimization possible in m[k+1] = append(m[k+1], ...) m[-k] = append(m[-k], ...) ... etc Does not cover "+" for strings (concatenation). Change-Id: Ibbb16ac3faf176958da344be1471b06d7cf33a6c Reviewed-on: https://go-review.googlesource.com/135795 Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
|
c6bf9a8109 |
cmd/compile: optimize AMD64's bit wise operation
Currently "arr[idx] |= 0x80" is compiled to MOVLload->BTSL->MOVLstore. And this CL optimizes it to a single BTSLconstmodify. Other bit wise operations with a direct memory operand are also implemented. 1. The size of the executable bin/go decreases about 4KB, and the total size of pkg/linux_amd64 (excluding cmd/compile) decreases about 0.6KB. 2. There a little improvement in the go1 benchmark test (excluding noise). name old time/op new time/op delta BinaryTree17-4 2.66s ± 4% 2.66s ± 3% ~ (p=0.596 n=49+49) Fannkuch11-4 2.38s ± 2% 2.32s ± 2% -2.69% (p=0.000 n=50+50) FmtFprintfEmpty-4 42.7ns ± 4% 43.2ns ± 7% +1.31% (p=0.009 n=50+50) FmtFprintfString-4 71.0ns ± 5% 72.0ns ± 3% +1.33% (p=0.000 n=50+50) FmtFprintfInt-4 80.7ns ± 4% 80.6ns ± 3% ~ (p=0.931 n=50+50) FmtFprintfIntInt-4 125ns ± 3% 126ns ± 4% ~ (p=0.051 n=50+50) FmtFprintfPrefixedInt-4 158ns ± 1% 142ns ± 3% -9.84% (p=0.000 n=36+50) FmtFprintfFloat-4 215ns ± 4% 212ns ± 4% -1.23% (p=0.002 n=50+50) FmtManyArgs-4 519ns ± 3% 510ns ± 3% -1.77% (p=0.000 n=50+50) GobDecode-4 6.49ms ± 6% 6.52ms ± 5% ~ (p=0.866 n=50+50) GobEncode-4 5.93ms ± 8% 6.01ms ± 7% ~ (p=0.076 n=50+50) Gzip-4 222ms ± 4% 224ms ± 8% +0.80% (p=0.001 n=50+50) Gunzip-4 36.6ms ± 5% 36.4ms ± 4% ~ (p=0.093 n=50+50) HTTPClientServer-4 59.1µs ± 1% 58.9µs ± 2% -0.24% (p=0.039 n=49+48) JSONEncode-4 9.23ms ± 4% 9.21ms ± 5% ~ (p=0.244 n=50+50) JSONDecode-4 48.8ms ± 4% 48.7ms ± 4% ~ (p=0.653 n=50+50) Mandelbrot200-4 3.81ms ± 4% 3.80ms ± 3% ~ (p=0.834 n=50+50) GoParse-4 3.20ms ± 5% 3.19ms ± 5% ~ (p=0.494 n=50+50) RegexpMatchEasy0_32-4 78.1ns ± 2% 77.4ns ± 3% -0.86% (p=0.005 n=50+50) RegexpMatchEasy0_1K-4 233ns ± 3% 233ns ± 3% ~ (p=0.074 n=50+50) RegexpMatchEasy1_32-4 74.2ns ± 3% 73.4ns ± 3% -1.06% (p=0.000 n=50+50) RegexpMatchEasy1_1K-4 369ns ± 2% 364ns ± 4% -1.41% (p=0.000 n=36+50) RegexpMatchMedium_32-4 109ns ± 4% 107ns ± 3% -2.06% (p=0.001 n=50+50) RegexpMatchMedium_1K-4 31.5µs ± 3% 30.8µs ± 3% -2.20% (p=0.000 n=50+50) RegexpMatchHard_32-4 1.57µs ± 3% 1.56µs ± 2% -0.57% (p=0.016 n=50+50) RegexpMatchHard_1K-4 47.4µs ± 4% 47.0µs ± 3% -0.82% (p=0.008 n=50+50) Revcomp-4 414ms ± 7% 412ms ± 7% ~ (p=0.285 n=50+50) Template-4 64.3ms ± 4% 62.7ms ± 3% -2.44% (p=0.000 n=50+50) TimeParse-4 316ns ± 3% 313ns ± 3% ~ (p=0.122 n=50+50) TimeFormat-4 291ns ± 3% 293ns ± 3% +0.80% (p=0.001 n=50+50) [Geo mean] 46.5µs 46.2µs -0.81% name old speed new speed delta GobDecode-4 118MB/s ± 6% 118MB/s ± 5% ~ (p=0.863 n=50+50) GobEncode-4 130MB/s ± 9% 128MB/s ± 8% ~ (p=0.076 n=50+50) Gzip-4 87.4MB/s ± 4% 86.8MB/s ± 7% -0.78% (p=0.002 n=50+50) Gunzip-4 531MB/s ± 5% 533MB/s ± 4% ~ (p=0.093 n=50+50) JSONEncode-4 210MB/s ± 4% 211MB/s ± 5% ~ (p=0.247 n=50+50) JSONDecode-4 39.8MB/s ± 4% 39.9MB/s ± 4% ~ (p=0.654 n=50+50) GoParse-4 18.1MB/s ± 5% 18.2MB/s ± 5% ~ (p=0.493 n=50+50) RegexpMatchEasy0_32-4 410MB/s ± 2% 413MB/s ± 3% +0.86% (p=0.004 n=50+50) RegexpMatchEasy0_1K-4 4.39GB/s ± 3% 4.38GB/s ± 3% ~ (p=0.063 n=50+50) RegexpMatchEasy1_32-4 432MB/s ± 3% 436MB/s ± 3% +1.07% (p=0.000 n=50+50) RegexpMatchEasy1_1K-4 2.77GB/s ± 2% 2.81GB/s ± 4% +1.46% (p=0.000 n=36+50) RegexpMatchMedium_32-4 9.16MB/s ± 3% 9.35MB/s ± 4% +2.09% (p=0.001 n=50+50) RegexpMatchMedium_1K-4 32.5MB/s ± 3% 33.2MB/s ± 3% +2.25% (p=0.000 n=50+50) RegexpMatchHard_32-4 20.4MB/s ± 3% 20.5MB/s ± 2% +0.56% (p=0.017 n=50+50) RegexpMatchHard_1K-4 21.6MB/s ± 4% 21.8MB/s ± 3% +0.83% (p=0.008 n=50+50) Revcomp-4 613MB/s ± 4% 618MB/s ± 7% ~ (p=0.152 n=48+50) Template-4 30.2MB/s ± 4% 30.9MB/s ± 3% +2.49% (p=0.000 n=50+50) [Geo mean] 127MB/s 128MB/s +0.64% Change-Id: If405198283855d75697f66cf894b2bef458f620e Reviewed-on: https://go-review.googlesource.com/135422 Reviewed-by: Keith Randall <khr@golang.org> |
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fanzha02
|
a19a83c8ef |
cmd/compile: optimize math.Float64(32)bits and math.Float64(32)frombits on arm64
Use float <-> int register moves without conversion instead of stores and loads to move float <-> int values. Math package benchmark results. name old time/op new time/op delta Acosh 153ns ± 0% 147ns ± 0% -3.92% (p=0.000 n=10+10) Asinh 183ns ± 0% 177ns ± 0% -3.28% (p=0.000 n=10+10) Atanh 157ns ± 0% 155ns ± 0% -1.27% (p=0.000 n=10+10) Atan2 118ns ± 0% 117ns ± 1% -0.59% (p=0.003 n=10+10) Cbrt 119ns ± 0% 114ns ± 0% -4.20% (p=0.000 n=10+10) Copysign 7.51ns ± 0% 6.51ns ± 0% -13.32% (p=0.000 n=9+10) Cos 73.1ns ± 0% 70.6ns ± 0% -3.42% (p=0.000 n=10+10) Cosh 119ns ± 0% 121ns ± 0% +1.68% (p=0.000 n=10+9) ExpGo 154ns ± 0% 149ns ± 0% -3.05% (p=0.000 n=9+10) Expm1 101ns ± 0% 99ns ± 0% -1.88% (p=0.000 n=10+10) Exp2Go 150ns ± 0% 146ns ± 0% -2.67% (p=0.000 n=10+10) Abs 7.01ns ± 0% 6.01ns ± 0% -14.27% (p=0.000 n=10+9) Mod 234ns ± 0% 212ns ± 0% -9.40% (p=0.000 n=9+10) Frexp 34.5ns ± 0% 30.0ns ± 0% -13.04% (p=0.000 n=10+10) Gamma 112ns ± 0% 111ns ± 0% -0.89% (p=0.000 n=10+10) Hypot 73.6ns ± 0% 68.6ns ± 0% -6.79% (p=0.000 n=10+10) HypotGo 77.1ns ± 0% 72.1ns ± 0% -6.49% (p=0.000 n=10+10) Ilogb 31.0ns ± 0% 28.0ns ± 0% -9.68% (p=0.000 n=10+10) J0 437ns ± 0% 434ns ± 0% -0.62% (p=0.000 n=10+10) J1 433ns ± 0% 431ns ± 0% -0.46% (p=0.000 n=10+10) Jn 927ns ± 0% 922ns ± 0% -0.54% (p=0.000 n=10+10) Ldexp 41.5ns ± 0% 37.0ns ± 0% -10.84% (p=0.000 n=9+10) Log 124ns ± 0% 118ns ± 0% -4.84% (p=0.000 n=10+9) Logb 34.0ns ± 0% 32.0ns ± 0% -5.88% (p=0.000 n=10+10) Log1p 110ns ± 0% 108ns ± 0% -1.82% (p=0.000 n=10+10) Log10 136ns ± 0% 132ns ± 0% -2.94% (p=0.000 n=10+10) Log2 51.6ns ± 0% 47.1ns ± 0% -8.72% (p=0.000 n=10+10) Nextafter32 33.0ns ± 0% 30.5ns ± 0% -7.58% (p=0.000 n=10+10) Nextafter64 29.0ns ± 0% 26.5ns ± 0% -8.62% (p=0.000 n=10+10) PowInt 169ns ± 0% 160ns ± 0% -5.33% (p=0.000 n=10+10) PowFrac 375ns ± 0% 361ns ± 0% -3.73% (p=0.000 n=10+10) RoundToEven 14.0ns ± 0% 12.5ns ± 0% -10.71% (p=0.000 n=10+10) Remainder 206ns ± 0% 192ns ± 0% -6.80% (p=0.000 n=10+9) Signbit 6.01ns ± 0% 5.51ns ± 0% -8.32% (p=0.000 n=10+9) Sin 70.1ns ± 0% 69.6ns ± 0% -0.71% (p=0.000 n=10+10) Sincos 99.1ns ± 0% 99.6ns ± 0% +0.50% (p=0.000 n=9+10) SqrtGoLatency 178ns ± 0% 146ns ± 0% -17.70% (p=0.000 n=8+10) SqrtPrime 9.19µs ± 0% 9.20µs ± 0% +0.01% (p=0.000 n=9+9) Tanh 125ns ± 1% 127ns ± 0% +1.36% (p=0.000 n=10+10) Y0 428ns ± 0% 426ns ± 0% -0.47% (p=0.000 n=10+10) Y1 431ns ± 0% 429ns ± 0% -0.46% (p=0.000 n=10+9) Yn 906ns ± 0% 901ns ± 0% -0.55% (p=0.000 n=10+10) Float64bits 4.50ns ± 0% 3.50ns ± 0% -22.22% (p=0.000 n=10+10) Float64frombits 4.00ns ± 0% 3.50ns ± 0% -12.50% (p=0.000 n=10+9) Float32bits 4.50ns ± 0% 3.50ns ± 0% -22.22% (p=0.002 n=8+10) Float32frombits 4.00ns ± 0% 3.50ns ± 0% -12.50% (p=0.000 n=10+10) Change-Id: Iba829e15d5624962fe0c699139ea783efeefabc2 Reviewed-on: https://go-review.googlesource.com/129715 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Keith Randall
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b1f656b1ce |
cmd/compile: fold address calculations into CMPload[const] ops
Makes go binary smaller by 0.2%. I noticed this in autogenerated equal methods, and there are probably a lot of those. Change-Id: I4e04eb3653fbceb9dd6a4eee97ceab1fa4d10b72 Reviewed-on: https://go-review.googlesource.com/135379 Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
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Lynn Boger
|
8dbd9afbb0 |
cmd/compile: improve rules for PPC64.rules
This adds some improvements to the rules for PPC64 to eliminate unnecessary zero or sign extends, and fix some rule for truncates which were not always using the correct sign instruction. This reduces of size of many functions by 1 or 2 instructions and can improve performance in cases where the execution time depends on small loops where at least 1 instruction was removed and where that loop contributes a significant amount of the total execution time. Included is a testcase for codegen to verify the sign/zero extend instructions are omitted. An example of the improvement (strings): IndexAnyASCII/256:1-16 392ns ± 0% 369ns ± 0% -5.79% (p=0.000 n=1+10) IndexAnyASCII/256:2-16 397ns ± 0% 376ns ± 0% -5.23% (p=0.000 n=1+9) IndexAnyASCII/256:4-16 405ns ± 0% 384ns ± 0% -5.19% (p=1.714 n=1+6) IndexAnyASCII/256:8-16 427ns ± 0% 403ns ± 0% -5.57% (p=0.000 n=1+10) IndexAnyASCII/256:16-16 441ns ± 0% 418ns ± 1% -5.33% (p=0.000 n=1+10) IndexAnyASCII/4096:1-16 5.62µs ± 0% 5.27µs ± 1% -6.31% (p=0.000 n=1+10) IndexAnyASCII/4096:2-16 5.67µs ± 0% 5.29µs ± 0% -6.67% (p=0.222 n=1+8) IndexAnyASCII/4096:4-16 5.66µs ± 0% 5.28µs ± 1% -6.66% (p=0.000 n=1+10) IndexAnyASCII/4096:8-16 5.66µs ± 0% 5.31µs ± 1% -6.10% (p=0.000 n=1+10) IndexAnyASCII/4096:16-16 5.70µs ± 0% 5.33µs ± 1% -6.43% (p=0.182 n=1+10) Change-Id: I739a6132b505936d39001aada5a978ff2a5f0500 Reviewed-on: https://go-review.googlesource.com/129875 Reviewed-by: David Chase <drchase@google.com> |
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erifan01
|
8149db4f64 |
cmd/compile: intrinsify math.RoundToEven and math.Abs on arm64
math.RoundToEven can be done by one arm64 instruction FRINTND, intrinsify it to improve performance. The current pure Go implementation of the function Abs is translated into five instructions on arm64: str, ldr, and, str, ldr. The intrinsic implementation requires only one instruction, so in terms of performance, intrinsify it is worthwhile. Benchmarks: name old time/op new time/op delta Abs-8 3.50ns ± 0% 1.50ns ± 0% -57.14% (p=0.000 n=10+10) RoundToEven-8 9.26ns ± 0% 1.50ns ± 0% -83.80% (p=0.000 n=10+10) Change-Id: I9456b26ab282b544dfac0154fc86f17aed96ac3d Reviewed-on: https://go-review.googlesource.com/116535 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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fanzha02
|
d5377c2026 |
test: fix the wrong test of math.Copysign(c, -1) for arm64
The CL 132915 added the wrong codegen test for math.Copysign(c, -1), it should test that AND is not emitted. This CL fixes this error. Change-Id: Ida1d3d54ebfc7f238abccbc1f70f914e1b5bfd91 Reviewed-on: https://go-review.googlesource.com/134815 Reviewed-by: Giovanni Bajo <rasky@develer.com> Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Ben Shi
|
9f2411894b |
cmd/compile: optimize arm's bit operation
BFC (Bit Field Clear) was introduced in ARMv7, which can simplify ANDconst and BICconst. And this CL implements that optimization. 1. The total size of pkg/android_arm decreases about 3KB, excluding cmd/compile/. 2. There is no regression in the go1 benchmark result, and some cases (FmtFprintfEmpty-4 and RegexpMatchMedium_32-4) even get slight improvement. name old time/op new time/op delta BinaryTree17-4 25.3s ± 1% 25.2s ± 1% ~ (p=0.072 n=30+29) Fannkuch11-4 13.3s ± 0% 13.3s ± 0% +0.13% (p=0.000 n=30+26) FmtFprintfEmpty-4 407ns ± 0% 394ns ± 0% -3.19% (p=0.000 n=26+28) FmtFprintfString-4 664ns ± 0% 662ns ± 0% -0.22% (p=0.000 n=30+30) FmtFprintfInt-4 712ns ± 0% 706ns ± 0% -0.79% (p=0.000 n=30+30) FmtFprintfIntInt-4 1.06µs ± 0% 1.05µs ± 0% -0.38% (p=0.000 n=30+30) FmtFprintfPrefixedInt-4 1.16µs ± 0% 1.16µs ± 0% -0.13% (p=0.000 n=30+29) FmtFprintfFloat-4 2.24µs ± 0% 2.23µs ± 0% -0.51% (p=0.000 n=29+21) FmtManyArgs-4 4.09µs ± 0% 4.06µs ± 0% -0.83% (p=0.000 n=28+30) GobDecode-4 55.0ms ± 5% 55.4ms ± 5% ~ (p=0.307 n=30+30) GobEncode-4 51.2ms ± 1% 51.9ms ± 1% +1.23% (p=0.000 n=29+30) Gzip-4 2.64s ± 0% 2.60s ± 0% -1.35% (p=0.000 n=30+29) Gunzip-4 309ms ± 0% 308ms ± 0% -0.27% (p=0.000 n=30+30) HTTPClientServer-4 1.03ms ± 5% 1.02ms ± 4% ~ (p=0.117 n=30+29) JSONEncode-4 101ms ± 2% 101ms ± 2% ~ (p=0.338 n=29+29) JSONDecode-4 383ms ± 2% 382ms ± 2% ~ (p=0.751 n=26+30) Mandelbrot200-4 18.4ms ± 0% 18.4ms ± 0% -0.10% (p=0.000 n=29+29) GoParse-4 22.6ms ± 0% 22.5ms ± 0% -0.39% (p=0.000 n=30+30) RegexpMatchEasy0_32-4 761ns ± 0% 750ns ± 0% -1.47% (p=0.000 n=26+29) RegexpMatchEasy0_1K-4 4.33µs ± 0% 4.34µs ± 0% +0.27% (p=0.000 n=25+28) RegexpMatchEasy1_32-4 809ns ± 0% 795ns ± 0% -1.74% (p=0.000 n=27+25) RegexpMatchEasy1_1K-4 5.54µs ± 0% 5.53µs ± 0% -0.18% (p=0.000 n=29+29) RegexpMatchMedium_32-4 1.11µs ± 0% 1.08µs ± 0% -2.78% (p=0.000 n=27+29) RegexpMatchMedium_1K-4 255µs ± 0% 255µs ± 0% -0.02% (p=0.029 n=30+30) RegexpMatchHard_32-4 14.7µs ± 0% 14.7µs ± 0% -0.28% (p=0.000 n=30+29) RegexpMatchHard_1K-4 439µs ± 0% 439µs ± 0% ~ (p=0.907 n=23+27) Revcomp-4 41.9ms ± 1% 41.9ms ± 1% ~ (p=0.230 n=28+30) Template-4 522ms ± 1% 528ms ± 1% +1.25% (p=0.000 n=30+30) TimeParse-4 3.34µs ± 0% 3.35µs ± 0% +0.23% (p=0.000 n=30+27) TimeFormat-4 6.06µs ± 0% 6.13µs ± 0% +1.08% (p=0.000 n=29+29) [Geo mean] 384µs 382µs -0.37% name old speed new speed delta GobDecode-4 14.0MB/s ± 5% 13.9MB/s ± 5% ~ (p=0.308 n=30+30) GobEncode-4 15.0MB/s ± 1% 14.8MB/s ± 1% -1.22% (p=0.000 n=29+30) Gzip-4 7.36MB/s ± 0% 7.46MB/s ± 0% +1.35% (p=0.000 n=30+30) Gunzip-4 62.8MB/s ± 0% 63.0MB/s ± 0% +0.27% (p=0.000 n=30+30) JSONEncode-4 19.2MB/s ± 2% 19.2MB/s ± 2% ~ (p=0.312 n=29+29) JSONDecode-4 5.05MB/s ± 3% 5.08MB/s ± 2% ~ (p=0.356 n=29+30) GoParse-4 2.56MB/s ± 0% 2.57MB/s ± 0% +0.39% (p=0.000 n=23+27) RegexpMatchEasy0_32-4 42.0MB/s ± 0% 42.6MB/s ± 0% +1.50% (p=0.000 n=26+28) RegexpMatchEasy0_1K-4 236MB/s ± 0% 236MB/s ± 0% -0.27% (p=0.000 n=25+28) RegexpMatchEasy1_32-4 39.6MB/s ± 0% 40.2MB/s ± 0% +1.73% (p=0.000 n=27+27) RegexpMatchEasy1_1K-4 185MB/s ± 0% 185MB/s ± 0% +0.18% (p=0.000 n=29+29) RegexpMatchMedium_32-4 900kB/s ± 0% 920kB/s ± 0% +2.22% (p=0.000 n=29+29) RegexpMatchMedium_1K-4 4.02MB/s ± 0% 4.02MB/s ± 0% +0.07% (p=0.004 n=30+27) RegexpMatchHard_32-4 2.17MB/s ± 0% 2.18MB/s ± 0% +0.46% (p=0.000 n=30+26) RegexpMatchHard_1K-4 2.33MB/s ± 0% 2.33MB/s ± 0% ~ (all equal) Revcomp-4 60.6MB/s ± 1% 60.7MB/s ± 1% ~ (p=0.207 n=28+30) Template-4 3.72MB/s ± 1% 3.67MB/s ± 1% -1.23% (p=0.000 n=30+30) [Geo mean] 12.9MB/s 12.9MB/s +0.29% Change-Id: I07f497f8bb476c950dc555491d00c9066fb64a4e Reviewed-on: https://go-review.googlesource.com/134232 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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erifan01
|
204cc14bdd |
cmd/compile: implement non-constant rotates using ROR on arm64
Add some rules to match the Go code like: y &= 63 x << y | x >> (64-y) or y &= 63 x >> y | x << (64-y) as a ROR instruction. Make math/bits.RotateLeft faster on arm64. Extends CL 132435 to arm64. Benchmarks of math/bits.RotateLeftxxN: name old time/op new time/op delta RotateLeft-8 3.548750ns +- 1% 2.003750ns +- 0% -43.54% (p=0.000 n=8+8) RotateLeft8-8 3.925000ns +- 0% 3.925000ns +- 0% ~ (p=1.000 n=8+8) RotateLeft16-8 3.925000ns +- 0% 3.927500ns +- 0% ~ (p=0.608 n=8+8) RotateLeft32-8 3.925000ns +- 0% 2.002500ns +- 0% -48.98% (p=0.000 n=8+8) RotateLeft64-8 3.536250ns +- 0% 2.003750ns +- 0% -43.34% (p=0.000 n=8+8) Change-Id: I77622cd7f39b917427e060647321f5513973232c Reviewed-on: https://go-review.googlesource.com/122542 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
031a35ec84 |
cmd/compile: optimize 386's comparison
Optimization of "(CMPconst [0] (ANDL x y)) -> (TESTL x y)" only get benefits if there is no further use of the result of x&y. A condition of uses==1 will have slight improvements. 1. The code size of pkg/linux_386 decreases about 300 bytes, excluding cmd/compile/. 2. The go1 benchmark shows no regression, and even a slight improvement in test case FmtFprintfEmpty-4, excluding noise. name old time/op new time/op delta BinaryTree17-4 3.34s ± 3% 3.32s ± 2% ~ (p=0.197 n=30+30) Fannkuch11-4 3.48s ± 2% 3.47s ± 1% -0.33% (p=0.015 n=30+30) FmtFprintfEmpty-4 46.3ns ± 4% 44.8ns ± 4% -3.33% (p=0.000 n=30+30) FmtFprintfString-4 78.8ns ± 7% 77.3ns ± 5% ~ (p=0.098 n=30+26) FmtFprintfInt-4 90.2ns ± 1% 90.0ns ± 7% -0.23% (p=0.027 n=18+30) FmtFprintfIntInt-4 144ns ± 4% 143ns ± 5% ~ (p=0.945 n=30+29) FmtFprintfPrefixedInt-4 180ns ± 4% 180ns ± 5% ~ (p=0.858 n=30+30) FmtFprintfFloat-4 409ns ± 4% 406ns ± 3% -0.87% (p=0.028 n=30+30) FmtManyArgs-4 611ns ± 5% 608ns ± 4% ~ (p=0.812 n=30+30) GobDecode-4 7.30ms ± 5% 7.26ms ± 5% ~ (p=0.522 n=30+29) GobEncode-4 6.90ms ± 7% 6.82ms ± 4% ~ (p=0.086 n=29+28) Gzip-4 396ms ± 4% 400ms ± 4% +0.99% (p=0.026 n=30+30) Gunzip-4 41.1ms ± 3% 41.2ms ± 3% ~ (p=0.495 n=30+30) HTTPClientServer-4 63.7µs ± 3% 63.3µs ± 2% ~ (p=0.113 n=29+29) JSONEncode-4 16.1ms ± 2% 16.1ms ± 2% -0.30% (p=0.041 n=30+30) JSONDecode-4 60.9ms ± 3% 61.2ms ± 6% ~ (p=0.187 n=30+30) Mandelbrot200-4 5.17ms ± 2% 5.19ms ± 3% ~ (p=0.676 n=30+30) GoParse-4 3.28ms ± 3% 3.25ms ± 2% -0.97% (p=0.002 n=30+30) RegexpMatchEasy0_32-4 103ns ± 4% 104ns ± 4% ~ (p=0.352 n=30+30) RegexpMatchEasy0_1K-4 849ns ± 2% 845ns ± 2% ~ (p=0.381 n=30+30) RegexpMatchEasy1_32-4 113ns ± 4% 113ns ± 4% ~ (p=0.795 n=30+30) RegexpMatchEasy1_1K-4 1.03µs ± 3% 1.03µs ± 4% ~ (p=0.275 n=25+30) RegexpMatchMedium_32-4 132ns ± 3% 132ns ± 3% ~ (p=0.970 n=30+30) RegexpMatchMedium_1K-4 41.4µs ± 3% 41.4µs ± 3% ~ (p=0.212 n=30+30) RegexpMatchHard_32-4 2.22µs ± 4% 2.22µs ± 4% ~ (p=0.399 n=30+30) RegexpMatchHard_1K-4 67.2µs ± 3% 67.6µs ± 4% ~ (p=0.359 n=30+30) Revcomp-4 1.84s ± 2% 1.83s ± 2% ~ (p=0.532 n=30+30) Template-4 69.1ms ± 4% 68.8ms ± 3% ~ (p=0.146 n=30+30) TimeParse-4 441ns ± 3% 442ns ± 3% ~ (p=0.154 n=30+30) TimeFormat-4 413ns ± 3% 414ns ± 3% ~ (p=0.275 n=30+30) [Geo mean] 66.2µs 66.0µs -0.28% name old speed new speed delta GobDecode-4 105MB/s ± 5% 106MB/s ± 5% ~ (p=0.514 n=30+29) GobEncode-4 111MB/s ± 5% 113MB/s ± 4% +1.37% (p=0.046 n=28+28) Gzip-4 49.1MB/s ± 4% 48.6MB/s ± 4% -0.98% (p=0.028 n=30+30) Gunzip-4 472MB/s ± 4% 472MB/s ± 3% ~ (p=0.496 n=30+30) JSONEncode-4 120MB/s ± 2% 121MB/s ± 2% +0.29% (p=0.042 n=30+30) JSONDecode-4 31.9MB/s ± 3% 31.7MB/s ± 6% ~ (p=0.186 n=30+30) GoParse-4 17.6MB/s ± 3% 17.8MB/s ± 2% +0.98% (p=0.002 n=30+30) RegexpMatchEasy0_32-4 309MB/s ± 4% 307MB/s ± 4% ~ (p=0.501 n=30+30) RegexpMatchEasy0_1K-4 1.21GB/s ± 2% 1.21GB/s ± 2% ~ (p=0.301 n=30+30) RegexpMatchEasy1_32-4 283MB/s ± 4% 282MB/s ± 3% ~ (p=0.877 n=30+30) RegexpMatchEasy1_1K-4 1.00GB/s ± 3% 0.99GB/s ± 4% ~ (p=0.276 n=25+30) RegexpMatchMedium_32-4 7.54MB/s ± 3% 7.55MB/s ± 3% ~ (p=0.528 n=30+30) RegexpMatchMedium_1K-4 24.7MB/s ± 3% 24.7MB/s ± 3% ~ (p=0.203 n=30+30) RegexpMatchHard_32-4 14.4MB/s ± 4% 14.4MB/s ± 4% ~ (p=0.407 n=30+30) RegexpMatchHard_1K-4 15.3MB/s ± 3% 15.1MB/s ± 4% ~ (p=0.306 n=30+30) Revcomp-4 138MB/s ± 2% 139MB/s ± 2% ~ (p=0.520 n=30+30) Template-4 28.1MB/s ± 4% 28.2MB/s ± 3% ~ (p=0.149 n=30+30) [Geo mean] 81.5MB/s 81.5MB/s +0.06% Change-Id: I7f75425f79eec93cdd8fdd94db13ad4f61b6a2f5 Reviewed-on: https://go-review.googlesource.com/133657 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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fanzha02
|
2e5c32518c |
cmd/compile: optimize math.Copysign on arm64
Add rewrite rules to optimize math.Copysign() when the second argument is negative floating point constant. For example, math.Copysign(c, -2): The previous compile output is "AND $9223372036854775807, R0, R0; ORR $-9223372036854775808, R0, R0". The optimized compile output is "ORR $-9223372036854775808, R0, R0" Math package benchmark results. name old time/op new time/op delta Copysign-8 2.61ns ± 2% 2.49ns ± 0% -4.55% (p=0.000 n=10+10) Cos-8 43.0ns ± 0% 41.5ns ± 0% -3.49% (p=0.000 n=10+10) Cosh-8 98.6ns ± 0% 98.1ns ± 0% -0.51% (p=0.000 n=10+10) ExpGo-8 107ns ± 0% 105ns ± 0% -1.87% (p=0.000 n=10+10) Exp2Go-8 100ns ± 0% 100ns ± 0% +0.39% (p=0.000 n=10+8) Max-8 6.56ns ± 2% 6.45ns ± 1% -1.63% (p=0.002 n=10+10) Min-8 6.66ns ± 3% 6.47ns ± 2% -2.82% (p=0.006 n=10+10) Mod-8 107ns ± 1% 104ns ± 1% -2.72% (p=0.000 n=10+10) Frexp-8 11.5ns ± 1% 11.0ns ± 0% -4.56% (p=0.000 n=8+10) HypotGo-8 19.4ns ± 0% 19.4ns ± 0% +0.36% (p=0.019 n=10+10) Ilogb-8 8.63ns ± 0% 8.51ns ± 0% -1.36% (p=0.000 n=10+10) Jn-8 584ns ± 0% 585ns ± 0% +0.17% (p=0.000 n=7+8) Ldexp-8 13.8ns ± 0% 13.5ns ± 0% -2.17% (p=0.002 n=8+10) Logb-8 10.2ns ± 0% 9.9ns ± 0% -2.65% (p=0.000 n=10+7) Nextafter64-8 7.54ns ± 0% 7.51ns ± 0% -0.37% (p=0.000 n=10+10) Remainder-8 73.5ns ± 1% 70.4ns ± 1% -4.27% (p=0.000 n=10+10) SqrtGoLatency-8 79.6ns ± 0% 76.2ns ± 0% -4.30% (p=0.000 n=9+10) Yn-8 582ns ± 0% 579ns ± 0% -0.52% (p=0.000 n=10+10) Change-Id: I0c9cd1ea87435e7b8bab94b4e79e6e29785f25b1 Reviewed-on: https://go-review.googlesource.com/132915 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Ben Shi
|
067dfce21f |
cmd/compile: optimize ARM's comparision
Optimize (CMPconst [0] (ADD x y)) to (CMN x y) will only get benefits when the result of the addition is no longer used, otherwise there might be even performance drop. And this CL fixes that issue for CMP/CMN/TST/TEQ. There is little regression in the go1 benchmark (excluding noise), and the test case JSONDecode-4 even gets improvement. name old time/op new time/op delta BinaryTree17-4 21.6s ± 1% 21.6s ± 0% -0.22% (p=0.013 n=30+30) Fannkuch11-4 11.1s ± 0% 11.1s ± 0% +0.11% (p=0.000 n=30+29) FmtFprintfEmpty-4 297ns ± 0% 297ns ± 0% +0.08% (p=0.007 n=26+28) FmtFprintfString-4 589ns ± 1% 589ns ± 0% ~ (p=0.659 n=30+25) FmtFprintfInt-4 644ns ± 1% 650ns ± 0% +0.88% (p=0.000 n=30+24) FmtFprintfIntInt-4 964ns ± 0% 977ns ± 0% +1.33% (p=0.000 n=30+30) FmtFprintfPrefixedInt-4 1.06µs ± 0% 1.07µs ± 0% +1.31% (p=0.000 n=29+27) FmtFprintfFloat-4 1.89µs ± 0% 1.92µs ± 0% +1.25% (p=0.000 n=29+29) FmtManyArgs-4 3.63µs ± 0% 3.67µs ± 0% +1.33% (p=0.000 n=29+27) GobDecode-4 38.1ms ± 1% 37.9ms ± 1% -0.60% (p=0.000 n=29+29) GobEncode-4 35.3ms ± 2% 35.2ms ± 1% ~ (p=0.286 n=30+30) Gzip-4 2.36s ± 0% 2.37s ± 2% ~ (p=0.277 n=24+28) Gunzip-4 264ms ± 1% 264ms ± 1% ~ (p=0.104 n=28+30) HTTPClientServer-4 1.04ms ± 4% 1.02ms ± 4% -1.65% (p=0.000 n=28+28) JSONEncode-4 78.5ms ± 1% 79.6ms ± 1% +1.34% (p=0.000 n=27+28) JSONDecode-4 379ms ± 4% 352ms ± 5% -7.09% (p=0.000 n=29+30) Mandelbrot200-4 17.6ms ± 0% 17.6ms ± 0% ~ (p=0.206 n=28+29) GoParse-4 21.9ms ± 1% 22.1ms ± 1% +0.87% (p=0.000 n=28+26) RegexpMatchEasy0_32-4 631ns ± 0% 641ns ± 0% +1.63% (p=0.000 n=29+30) RegexpMatchEasy0_1K-4 4.11µs ± 0% 4.11µs ± 0% ~ (p=0.700 n=30+30) RegexpMatchEasy1_32-4 670ns ± 0% 679ns ± 0% +1.37% (p=0.000 n=21+30) RegexpMatchEasy1_1K-4 5.31µs ± 0% 5.26µs ± 0% -1.03% (p=0.000 n=25+28) RegexpMatchMedium_32-4 905ns ± 0% 906ns ± 0% +0.14% (p=0.001 n=30+30) RegexpMatchMedium_1K-4 192µs ± 0% 191µs ± 0% -0.45% (p=0.000 n=29+27) RegexpMatchHard_32-4 11.8µs ± 0% 11.7µs ± 0% -0.39% (p=0.000 n=29+28) RegexpMatchHard_1K-4 347µs ± 0% 347µs ± 0% ~ (p=0.084 n=29+30) Revcomp-4 37.5ms ± 1% 37.5ms ± 1% ~ (p=0.279 n=29+29) Template-4 519ms ± 2% 519ms ± 2% ~ (p=0.652 n=28+29) TimeParse-4 2.83µs ± 0% 2.78µs ± 0% -1.90% (p=0.000 n=27+28) TimeFormat-4 5.79µs ± 0% 5.60µs ± 0% -3.23% (p=0.000 n=29+29) [Geo mean] 331µs 330µs -0.16% name old speed new speed delta GobDecode-4 20.1MB/s ± 1% 20.3MB/s ± 1% +0.61% (p=0.000 n=29+29) GobEncode-4 21.7MB/s ± 2% 21.8MB/s ± 1% ~ (p=0.294 n=30+30) Gzip-4 8.23MB/s ± 1% 8.20MB/s ± 2% ~ (p=0.099 n=26+28) Gunzip-4 73.5MB/s ± 1% 73.4MB/s ± 1% ~ (p=0.107 n=28+30) JSONEncode-4 24.7MB/s ± 1% 24.4MB/s ± 1% -1.32% (p=0.000 n=27+28) JSONDecode-4 5.13MB/s ± 4% 5.52MB/s ± 5% +7.65% (p=0.000 n=29+30) GoParse-4 2.65MB/s ± 1% 2.63MB/s ± 1% -0.87% (p=0.000 n=28+26) RegexpMatchEasy0_32-4 50.7MB/s ± 0% 49.9MB/s ± 0% -1.58% (p=0.000 n=29+29) RegexpMatchEasy0_1K-4 249MB/s ± 0% 249MB/s ± 0% ~ (p=0.342 n=30+28) RegexpMatchEasy1_32-4 47.7MB/s ± 0% 47.1MB/s ± 0% -1.39% (p=0.000 n=26+30) RegexpMatchEasy1_1K-4 193MB/s ± 0% 195MB/s ± 0% +1.04% (p=0.000 n=25+28) RegexpMatchMedium_32-4 1.10MB/s ± 0% 1.10MB/s ± 0% -0.42% (p=0.000 n=30+26) RegexpMatchMedium_1K-4 5.33MB/s ± 0% 5.36MB/s ± 0% +0.43% (p=0.000 n=29+29) RegexpMatchHard_32-4 2.72MB/s ± 0% 2.73MB/s ± 0% +0.37% (p=0.000 n=29+30) RegexpMatchHard_1K-4 2.95MB/s ± 0% 2.95MB/s ± 0% ~ (all equal) Revcomp-4 67.8MB/s ± 1% 67.7MB/s ± 1% ~ (p=0.273 n=29+29) Template-4 3.74MB/s ± 2% 3.74MB/s ± 2% ~ (p=0.665 n=28+29) [Geo mean] 15.2MB/s 15.2MB/s +0.21% Change-Id: Ifed1fb8cc02d5ca52c8bc6c21b6b5bf6dbb2701a Reviewed-on: https://go-review.googlesource.com/132115 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Michael Munday
|
f94de9c9fb |
cmd/compile: make math/bits.RotateLeft{32,64} intrinsics on s390x
Extends CL 132435 to s390x. s390x has 32- and 64-bit variable rotate left instructions. Change-Id: Ic4f1ebb0e0543207ed2fc8c119e0163b428138a5 Reviewed-on: https://go-review.googlesource.com/133035 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
0e9f1de0b7 |
cmd/compile: optimize arm64's comparison
Add more optimization with TST/CMN. 1. A tiny benchmark shows more than 12% improvement. TSTCMN-4 378µs ± 0% 332µs ± 0% -12.15% (p=0.000 n=30+27) (https://github.com/benshi001/ugo1/blob/master/tstcmn_test.go) 2. There is little regression in the go1 benchmark, excluding noise. name old time/op new time/op delta BinaryTree17-4 19.1s ± 0% 19.1s ± 0% ~ (p=0.994 n=28+29) Fannkuch11-4 10.0s ± 0% 10.0s ± 0% ~ (p=0.198 n=30+25) FmtFprintfEmpty-4 233ns ± 0% 233ns ± 0% +0.14% (p=0.002 n=24+30) FmtFprintfString-4 428ns ± 0% 428ns ± 0% ~ (all equal) FmtFprintfInt-4 472ns ± 0% 472ns ± 0% ~ (all equal) FmtFprintfIntInt-4 725ns ± 0% 725ns ± 0% ~ (all equal) FmtFprintfPrefixedInt-4 889ns ± 0% 888ns ± 0% ~ (p=0.632 n=28+30) FmtFprintfFloat-4 1.20µs ± 0% 1.20µs ± 0% +0.05% (p=0.001 n=18+30) FmtManyArgs-4 3.00µs ± 0% 2.99µs ± 0% -0.07% (p=0.001 n=27+30) GobDecode-4 42.1ms ± 0% 42.2ms ± 0% +0.29% (p=0.000 n=28+28) GobEncode-4 38.6ms ± 9% 38.8ms ± 9% ~ (p=0.912 n=30+30) Gzip-4 2.07s ± 1% 2.05s ± 1% -0.64% (p=0.000 n=29+30) Gunzip-4 175ms ± 0% 175ms ± 0% -0.15% (p=0.001 n=30+30) HTTPClientServer-4 872µs ± 5% 880µs ± 6% ~ (p=0.196 n=30+29) JSONEncode-4 88.5ms ± 1% 89.8ms ± 1% +1.49% (p=0.000 n=23+24) JSONDecode-4 393ms ± 1% 390ms ± 1% -0.89% (p=0.000 n=28+30) Mandelbrot200-4 19.5ms ± 0% 19.5ms ± 0% ~ (p=0.405 n=29+28) GoParse-4 19.9ms ± 0% 20.0ms ± 0% +0.27% (p=0.000 n=30+30) RegexpMatchEasy0_32-4 431ns ± 0% 431ns ± 0% ~ (p=1.000 n=30+30) RegexpMatchEasy0_1K-4 1.61µs ± 0% 1.61µs ± 0% ~ (p=0.527 n=26+26) RegexpMatchEasy1_32-4 443ns ± 0% 443ns ± 0% ~ (all equal) RegexpMatchEasy1_1K-4 2.58µs ± 1% 2.58µs ± 1% ~ (p=0.578 n=27+25) RegexpMatchMedium_32-4 740ns ± 0% 740ns ± 0% ~ (p=0.357 n=30+30) RegexpMatchMedium_1K-4 223µs ± 0% 223µs ± 0% +0.16% (p=0.000 n=30+29) RegexpMatchHard_32-4 12.3µs ± 0% 12.3µs ± 0% ~ (p=0.236 n=27+27) RegexpMatchHard_1K-4 371µs ± 0% 371µs ± 0% +0.09% (p=0.000 n=30+27) Revcomp-4 2.85s ± 0% 2.85s ± 0% ~ (p=0.057 n=28+25) Template-4 408ms ± 1% 409ms ± 1% ~ (p=0.117 n=29+29) TimeParse-4 1.93µs ± 0% 1.93µs ± 0% ~ (p=0.535 n=29+28) TimeFormat-4 1.99µs ± 0% 1.99µs ± 0% ~ (p=0.168 n=29+28) [Geo mean] 306µs 307µs +0.07% name old speed new speed delta GobDecode-4 18.3MB/s ± 0% 18.2MB/s ± 0% -0.31% (p=0.000 n=28+29) GobEncode-4 19.9MB/s ± 8% 19.8MB/s ± 9% ~ (p=0.923 n=30+30) Gzip-4 9.39MB/s ± 1% 9.45MB/s ± 1% +0.65% (p=0.000 n=29+30) Gunzip-4 111MB/s ± 0% 111MB/s ± 0% +0.15% (p=0.001 n=30+30) JSONEncode-4 21.9MB/s ± 1% 21.6MB/s ± 1% -1.45% (p=0.000 n=23+23) JSONDecode-4 4.94MB/s ± 1% 4.98MB/s ± 1% +0.84% (p=0.000 n=27+30) GoParse-4 2.91MB/s ± 0% 2.90MB/s ± 0% -0.34% (p=0.000 n=21+22) RegexpMatchEasy0_32-4 74.1MB/s ± 0% 74.1MB/s ± 0% ~ (p=0.469 n=29+28) RegexpMatchEasy0_1K-4 634MB/s ± 0% 634MB/s ± 0% ~ (p=0.978 n=24+28) RegexpMatchEasy1_32-4 72.2MB/s ± 0% 72.2MB/s ± 0% ~ (p=0.064 n=27+29) RegexpMatchEasy1_1K-4 396MB/s ± 1% 396MB/s ± 1% ~ (p=0.583 n=27+25) RegexpMatchMedium_32-4 1.35MB/s ± 0% 1.35MB/s ± 0% ~ (all equal) RegexpMatchMedium_1K-4 4.60MB/s ± 0% 4.59MB/s ± 0% -0.14% (p=0.000 n=30+26) RegexpMatchHard_32-4 2.61MB/s ± 0% 2.61MB/s ± 0% ~ (all equal) RegexpMatchHard_1K-4 2.76MB/s ± 0% 2.76MB/s ± 0% ~ (all equal) Revcomp-4 89.1MB/s ± 0% 89.1MB/s ± 0% ~ (p=0.059 n=28+25) Template-4 4.75MB/s ± 1% 4.75MB/s ± 1% ~ (p=0.106 n=29+29) [Geo mean] 18.3MB/s 18.3MB/s -0.07% Change-Id: I3cd76ce63e84b0c3cebabf9fa3573b76a7343899 Reviewed-on: https://go-review.googlesource.com/124935 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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|
Ben Shi
|
b444215116 |
cmd/compile: optimize ARM64's code with MADD/MSUB
MADD does MUL-ADD in a single instruction, and MSUB does the similiar simplification for MUL-SUB. The CL implements the optimization with MADD/MSUB. 1. The total size of pkg/android_arm64/ decreases about 20KB, excluding cmd/compile/. 2. The go1 benchmark shows a little improvement for RegexpMatchHard_32-4 and Template-4, excluding noise. name old time/op new time/op delta BinaryTree17-4 16.3s ± 1% 16.5s ± 1% +1.41% (p=0.000 n=26+28) Fannkuch11-4 8.79s ± 1% 8.76s ± 0% -0.36% (p=0.000 n=26+28) FmtFprintfEmpty-4 172ns ± 0% 172ns ± 0% ~ (all equal) FmtFprintfString-4 362ns ± 1% 364ns ± 0% +0.55% (p=0.000 n=30+30) FmtFprintfInt-4 416ns ± 0% 416ns ± 0% ~ (p=0.099 n=22+30) FmtFprintfIntInt-4 655ns ± 1% 660ns ± 1% +0.76% (p=0.000 n=30+30) FmtFprintfPrefixedInt-4 810ns ± 0% 809ns ± 0% -0.08% (p=0.009 n=29+29) FmtFprintfFloat-4 1.08µs ± 0% 1.09µs ± 0% +0.61% (p=0.000 n=30+29) FmtManyArgs-4 2.70µs ± 0% 2.69µs ± 0% -0.23% (p=0.000 n=29+28) GobDecode-4 32.2ms ± 1% 32.1ms ± 1% -0.39% (p=0.000 n=27+26) GobEncode-4 27.4ms ± 2% 27.4ms ± 1% ~ (p=0.864 n=28+28) Gzip-4 1.53s ± 1% 1.52s ± 1% -0.30% (p=0.031 n=29+29) Gunzip-4 146ms ± 0% 146ms ± 0% -0.14% (p=0.001 n=25+30) HTTPClientServer-4 1.00ms ± 4% 0.98ms ± 6% -1.65% (p=0.001 n=29+30) JSONEncode-4 67.3ms ± 1% 67.2ms ± 1% ~ (p=0.520 n=28+28) JSONDecode-4 329ms ± 5% 330ms ± 4% ~ (p=0.142 n=30+30) Mandelbrot200-4 17.3ms ± 0% 17.3ms ± 0% ~ (p=0.055 n=26+29) GoParse-4 16.9ms ± 1% 17.0ms ± 1% +0.82% (p=0.000 n=30+30) RegexpMatchEasy0_32-4 382ns ± 0% 382ns ± 0% ~ (all equal) RegexpMatchEasy0_1K-4 1.33µs ± 0% 1.33µs ± 0% -0.25% (p=0.000 n=30+27) RegexpMatchEasy1_32-4 361ns ± 0% 361ns ± 0% -0.08% (p=0.002 n=30+28) RegexpMatchEasy1_1K-4 2.11µs ± 0% 2.09µs ± 0% -0.54% (p=0.000 n=30+29) RegexpMatchMedium_32-4 594ns ± 0% 592ns ± 0% -0.32% (p=0.000 n=30+30) RegexpMatchMedium_1K-4 173µs ± 0% 172µs ± 0% -0.77% (p=0.000 n=29+27) RegexpMatchHard_32-4 10.4µs ± 0% 10.1µs ± 0% -3.63% (p=0.000 n=28+27) RegexpMatchHard_1K-4 306µs ± 0% 301µs ± 0% -1.64% (p=0.000 n=29+30) Revcomp-4 2.51s ± 1% 2.52s ± 0% +0.18% (p=0.017 n=26+27) Template-4 394ms ± 3% 382ms ± 3% -3.22% (p=0.000 n=28+28) TimeParse-4 1.67µs ± 0% 1.67µs ± 0% +0.05% (p=0.030 n=27+30) TimeFormat-4 1.72µs ± 0% 1.70µs ± 0% -0.79% (p=0.000 n=28+26) [Geo mean] 259µs 259µs -0.33% name old speed new speed delta GobDecode-4 23.8MB/s ± 1% 23.9MB/s ± 1% +0.40% (p=0.001 n=27+26) GobEncode-4 28.0MB/s ± 2% 28.0MB/s ± 1% ~ (p=0.863 n=28+28) Gzip-4 12.7MB/s ± 1% 12.7MB/s ± 1% +0.32% (p=0.026 n=29+29) Gunzip-4 133MB/s ± 0% 133MB/s ± 0% +0.15% (p=0.001 n=24+30) JSONEncode-4 28.8MB/s ± 1% 28.9MB/s ± 1% ~ (p=0.475 n=28+28) JSONDecode-4 5.89MB/s ± 4% 5.87MB/s ± 5% ~ (p=0.174 n=29+30) GoParse-4 3.43MB/s ± 0% 3.40MB/s ± 1% -0.83% (p=0.000 n=28+30) RegexpMatchEasy0_32-4 83.6MB/s ± 0% 83.6MB/s ± 0% ~ (p=0.848 n=28+29) RegexpMatchEasy0_1K-4 768MB/s ± 0% 770MB/s ± 0% +0.25% (p=0.000 n=30+27) RegexpMatchEasy1_32-4 88.5MB/s ± 0% 88.5MB/s ± 0% ~ (p=0.086 n=29+29) RegexpMatchEasy1_1K-4 486MB/s ± 0% 489MB/s ± 0% +0.54% (p=0.000 n=30+29) RegexpMatchMedium_32-4 1.68MB/s ± 0% 1.69MB/s ± 0% +0.60% (p=0.000 n=30+23) RegexpMatchMedium_1K-4 5.90MB/s ± 0% 5.95MB/s ± 0% +0.85% (p=0.000 n=18+20) RegexpMatchHard_32-4 3.07MB/s ± 0% 3.18MB/s ± 0% +3.72% (p=0.000 n=29+26) RegexpMatchHard_1K-4 3.35MB/s ± 0% 3.40MB/s ± 0% +1.69% (p=0.000 n=30+30) Revcomp-4 101MB/s ± 0% 101MB/s ± 0% -0.18% (p=0.018 n=26+27) Template-4 4.92MB/s ± 4% 5.09MB/s ± 3% +3.31% (p=0.000 n=28+28) [Geo mean] 22.4MB/s 22.6MB/s +0.62% Change-Id: I8f304b272785739f57b3c8f736316f658f8c1b2a Reviewed-on: https://go-review.googlesource.com/129119 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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|
Michael Munday
|
6f9b94ab66 |
cmd/compile: implement OnesCount{8,16,32,64} intrinsics on s390x
This CL implements the math/bits.OnesCount{8,16,32,64} functions
as intrinsics on s390x using the 'population count' (popcnt)
instruction. This instruction was released as the 'population-count'
facility which uses the same facility bit (45) as the
'distinct-operands' facility which is a pre-requisite for Go on
s390x. We can therefore use it without a feature check.
The s390x popcnt instruction treats a 64 bit register as a vector
of 8 bytes, summing the number of ones in each byte individually.
It then writes the results to the corresponding bytes in the
output register. Therefore to implement OnesCount{16,32,64} we
need to sum the individual byte counts using some extra
instructions. To do this efficiently I've added some additional
pseudo operations to the s390x SSA backend.
Unlike other architectures the new instruction sequence is faster
for OnesCount8, so that is implemented using the intrinsic.
name old time/op new time/op delta
OnesCount 3.21ns ± 1% 1.35ns ± 0% -58.00% (p=0.000 n=20+20)
OnesCount8 0.91ns ± 1% 0.81ns ± 0% -11.43% (p=0.000 n=20+20)
OnesCount16 1.51ns ± 3% 1.21ns ± 0% -19.71% (p=0.000 n=20+17)
OnesCount32 1.91ns ± 0% 1.12ns ± 1% -41.60% (p=0.000 n=19+20)
OnesCount64 3.18ns ± 4% 1.35ns ± 0% -57.52% (p=0.000 n=20+20)
Change-Id: Id54f0bd28b6db9a887ad12c0d72fcc168ef9c4e0
Reviewed-on: https://go-review.googlesource.com/114675
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
|
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Giovanni Bajo
|
f02cc88f46 |
test: relax whitespaces matching in codegen tests
The codegen testsuite uses regexp to parse the syntax, but it doesn't have a way to tell line comments containing checks from line comments containing English sentences. This means that any syntax error (that is, non-matching regexp) is currently ignored and not reported. There were some tests in memcombine.go that had an extraneous space and were thus effectively disabled. It would be great if we could report it as a syntax error, but for now we just punt and swallow the spaces as a workaround, to avoid the same mistake again. Fixes #25452 Change-Id: Ic7747a2278bc00adffd0c199ce40937acbbc9cf0 Reviewed-on: https://go-review.googlesource.com/113835 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Zheng Xu
|
8f4fd3f34e |
build: support frame-pointer for arm64
Supporting frame-pointer makes Linux's perf and other profilers much more useful because it lets them gather a stack trace efficiently on profiling events. Major changes include: 1. save FP on the word below where RSP is pointing to (proposed by Cherry and Austin) 2. adjust some specific offsets in runtime assembly and wrapper code 3. add support to FP in goroutine scheduler 4. adjust link stack overflow check to take the extra word into account 5. adjust nosplit test cases to enable frame sizes which are 16 bytes aligned Performance impacts on go1 benchmarks: Enable frame-pointer (by default) name old time/op new time/op delta BinaryTree17-46 5.94s ± 0% 6.00s ± 0% +1.03% (p=0.029 n=4+4) Fannkuch11-46 2.84s ± 1% 2.77s ± 0% -2.58% (p=0.008 n=5+5) FmtFprintfEmpty-46 55.0ns ± 1% 58.9ns ± 1% +7.06% (p=0.008 n=5+5) FmtFprintfString-46 102ns ± 0% 105ns ± 0% +2.94% (p=0.008 n=5+5) FmtFprintfInt-46 118ns ± 0% 117ns ± 1% -1.19% (p=0.000 n=4+5) FmtFprintfIntInt-46 181ns ± 0% 182ns ± 1% ~ (p=0.444 n=5+5) FmtFprintfPrefixedInt-46 215ns ± 1% 214ns ± 0% ~ (p=0.254 n=5+4) FmtFprintfFloat-46 292ns ± 0% 296ns ± 0% +1.46% (p=0.029 n=4+4) FmtManyArgs-46 720ns ± 0% 732ns ± 0% +1.72% (p=0.008 n=5+5) GobDecode-46 9.82ms ± 1% 10.03ms ± 2% +2.10% (p=0.008 n=5+5) GobEncode-46 8.14ms ± 0% 8.72ms ± 1% +7.14% (p=0.008 n=5+5) Gzip-46 420ms ± 0% 424ms ± 0% +0.92% (p=0.008 n=5+5) Gunzip-46 48.2ms ± 0% 48.4ms ± 0% +0.41% (p=0.008 n=5+5) HTTPClientServer-46 201µs ± 4% 201µs ± 0% ~ (p=0.730 n=5+4) JSONEncode-46 17.1ms ± 0% 17.7ms ± 1% +3.80% (p=0.008 n=5+5) JSONDecode-46 88.0ms ± 0% 90.1ms ± 0% +2.42% (p=0.008 n=5+5) Mandelbrot200-46 5.06ms ± 0% 5.07ms ± 0% ~ (p=0.310 n=5+5) GoParse-46 5.04ms ± 0% 5.12ms ± 0% +1.53% (p=0.008 n=5+5) RegexpMatchEasy0_32-46 117ns ± 0% 117ns ± 0% ~ (all equal) RegexpMatchEasy0_1K-46 332ns ± 0% 329ns ± 0% -0.78% (p=0.008 n=5+5) RegexpMatchEasy1_32-46 104ns ± 0% 113ns ± 0% +8.65% (p=0.029 n=4+4) RegexpMatchEasy1_1K-46 563ns ± 0% 569ns ± 0% +1.10% (p=0.008 n=5+5) RegexpMatchMedium_32-46 167ns ± 2% 177ns ± 1% +5.74% (p=0.008 n=5+5) RegexpMatchMedium_1K-46 49.5µs ± 0% 53.4µs ± 0% +7.81% (p=0.008 n=5+5) RegexpMatchHard_32-46 2.56µs ± 1% 2.72µs ± 0% +6.01% (p=0.008 n=5+5) RegexpMatchHard_1K-46 77.0µs ± 0% 81.8µs ± 0% +6.24% (p=0.016 n=5+4) Revcomp-46 631ms ± 1% 627ms ± 1% ~ (p=0.095 n=5+5) Template-46 81.8ms ± 0% 86.3ms ± 0% +5.55% (p=0.008 n=5+5) TimeParse-46 423ns ± 0% 432ns ± 0% +2.32% (p=0.008 n=5+5) TimeFormat-46 478ns ± 2% 497ns ± 1% +3.89% (p=0.008 n=5+5) [Geo mean] 71.6µs 73.3µs +2.45% name old speed new speed delta GobDecode-46 78.1MB/s ± 1% 76.6MB/s ± 2% -2.04% (p=0.008 n=5+5) GobEncode-46 94.3MB/s ± 0% 88.0MB/s ± 1% -6.67% (p=0.008 n=5+5) Gzip-46 46.2MB/s ± 0% 45.8MB/s ± 0% -0.91% (p=0.008 n=5+5) Gunzip-46 403MB/s ± 0% 401MB/s ± 0% -0.41% (p=0.008 n=5+5) JSONEncode-46 114MB/s ± 0% 109MB/s ± 1% -3.66% (p=0.008 n=5+5) JSONDecode-46 22.0MB/s ± 0% 21.5MB/s ± 0% -2.35% (p=0.008 n=5+5) GoParse-46 11.5MB/s ± 0% 11.3MB/s ± 0% -1.51% (p=0.008 n=5+5) RegexpMatchEasy0_32-46 272MB/s ± 0% 272MB/s ± 1% ~ (p=0.190 n=4+5) RegexpMatchEasy0_1K-46 3.08GB/s ± 0% 3.11GB/s ± 0% +0.77% (p=0.008 n=5+5) RegexpMatchEasy1_32-46 306MB/s ± 0% 283MB/s ± 0% -7.63% (p=0.029 n=4+4) RegexpMatchEasy1_1K-46 1.82GB/s ± 0% 1.80GB/s ± 0% -1.07% (p=0.008 n=5+5) RegexpMatchMedium_32-46 5.99MB/s ± 0% 5.64MB/s ± 1% -5.77% (p=0.016 n=4+5) RegexpMatchMedium_1K-46 20.7MB/s ± 0% 19.2MB/s ± 0% -7.25% (p=0.008 n=5+5) RegexpMatchHard_32-46 12.5MB/s ± 1% 11.8MB/s ± 0% -5.66% (p=0.008 n=5+5) RegexpMatchHard_1K-46 13.3MB/s ± 0% 12.5MB/s ± 1% -6.01% (p=0.008 n=5+5) Revcomp-46 402MB/s ± 1% 405MB/s ± 1% ~ (p=0.095 n=5+5) Template-46 23.7MB/s ± 0% 22.5MB/s ± 0% -5.25% (p=0.008 n=5+5) [Geo mean] 82.2MB/s 79.6MB/s -3.26% Disable frame-pointer (GOEXPERIMENT=noframepointer) name old time/op new time/op delta BinaryTree17-46 5.94s ± 0% 5.96s ± 0% +0.39% (p=0.029 n=4+4) Fannkuch11-46 2.84s ± 1% 2.79s ± 1% -1.68% (p=0.008 n=5+5) FmtFprintfEmpty-46 55.0ns ± 1% 55.2ns ± 3% ~ (p=0.794 n=5+5) FmtFprintfString-46 102ns ± 0% 103ns ± 0% +0.98% (p=0.016 n=5+4) FmtFprintfInt-46 118ns ± 0% 115ns ± 0% -2.54% (p=0.029 n=4+4) FmtFprintfIntInt-46 181ns ± 0% 179ns ± 0% -1.10% (p=0.000 n=5+4) FmtFprintfPrefixedInt-46 215ns ± 1% 213ns ± 0% ~ (p=0.143 n=5+4) FmtFprintfFloat-46 292ns ± 0% 300ns ± 0% +2.83% (p=0.029 n=4+4) FmtManyArgs-46 720ns ± 0% 739ns ± 0% +2.64% (p=0.008 n=5+5) GobDecode-46 9.82ms ± 1% 9.78ms ± 1% ~ (p=0.151 n=5+5) GobEncode-46 8.14ms ± 0% 8.12ms ± 1% ~ (p=0.690 n=5+5) Gzip-46 420ms ± 0% 420ms ± 0% ~ (p=0.548 n=5+5) Gunzip-46 48.2ms ± 0% 48.0ms ± 0% -0.33% (p=0.032 n=5+5) HTTPClientServer-46 201µs ± 4% 199µs ± 3% ~ (p=0.548 n=5+5) JSONEncode-46 17.1ms ± 0% 17.2ms ± 0% ~ (p=0.056 n=5+5) JSONDecode-46 88.0ms ± 0% 88.6ms ± 0% +0.64% (p=0.008 n=5+5) Mandelbrot200-46 5.06ms ± 0% 5.07ms ± 0% ~ (p=0.548 n=5+5) GoParse-46 5.04ms ± 0% 5.07ms ± 0% +0.65% (p=0.008 n=5+5) RegexpMatchEasy0_32-46 117ns ± 0% 112ns ± 4% -4.27% (p=0.016 n=4+5) RegexpMatchEasy0_1K-46 332ns ± 0% 330ns ± 1% ~ (p=0.095 n=5+5) RegexpMatchEasy1_32-46 104ns ± 0% 110ns ± 1% +5.29% (p=0.029 n=4+4) RegexpMatchEasy1_1K-46 563ns ± 0% 567ns ± 2% ~ (p=0.151 n=5+5) RegexpMatchMedium_32-46 167ns ± 2% 166ns ± 0% ~ (p=0.333 n=5+4) RegexpMatchMedium_1K-46 49.5µs ± 0% 49.6µs ± 0% ~ (p=0.841 n=5+5) RegexpMatchHard_32-46 2.56µs ± 1% 2.49µs ± 0% -2.81% (p=0.008 n=5+5) RegexpMatchHard_1K-46 77.0µs ± 0% 75.8µs ± 0% -1.55% (p=0.008 n=5+5) Revcomp-46 631ms ± 1% 628ms ± 0% ~ (p=0.095 n=5+5) Template-46 81.8ms ± 0% 84.3ms ± 1% +3.05% (p=0.008 n=5+5) TimeParse-46 423ns ± 0% 425ns ± 0% +0.52% (p=0.008 n=5+5) TimeFormat-46 478ns ± 2% 478ns ± 1% ~ (p=1.000 n=5+5) [Geo mean] 71.6µs 71.6µs -0.01% name old speed new speed delta GobDecode-46 78.1MB/s ± 1% 78.5MB/s ± 1% ~ (p=0.151 n=5+5) GobEncode-46 94.3MB/s ± 0% 94.5MB/s ± 1% ~ (p=0.690 n=5+5) Gzip-46 46.2MB/s ± 0% 46.2MB/s ± 0% ~ (p=0.571 n=5+5) Gunzip-46 403MB/s ± 0% 404MB/s ± 0% +0.33% (p=0.032 n=5+5) JSONEncode-46 114MB/s ± 0% 113MB/s ± 0% ~ (p=0.056 n=5+5) JSONDecode-46 22.0MB/s ± 0% 21.9MB/s ± 0% -0.64% (p=0.008 n=5+5) GoParse-46 11.5MB/s ± 0% 11.4MB/s ± 0% -0.64% (p=0.008 n=5+5) RegexpMatchEasy0_32-46 272MB/s ± 0% 285MB/s ± 4% +4.74% (p=0.016 n=4+5) RegexpMatchEasy0_1K-46 3.08GB/s ± 0% 3.10GB/s ± 1% ~ (p=0.151 n=5+5) RegexpMatchEasy1_32-46 306MB/s ± 0% 290MB/s ± 1% -5.21% (p=0.029 n=4+4) RegexpMatchEasy1_1K-46 1.82GB/s ± 0% 1.81GB/s ± 2% ~ (p=0.151 n=5+5) RegexpMatchMedium_32-46 5.99MB/s ± 0% 6.02MB/s ± 1% ~ (p=0.063 n=4+5) RegexpMatchMedium_1K-46 20.7MB/s ± 0% 20.7MB/s ± 0% ~ (p=0.659 n=5+5) RegexpMatchHard_32-46 12.5MB/s ± 1% 12.8MB/s ± 0% +2.88% (p=0.008 n=5+5) RegexpMatchHard_1K-46 13.3MB/s ± 0% 13.5MB/s ± 0% +1.58% (p=0.008 n=5+5) Revcomp-46 402MB/s ± 1% 405MB/s ± 0% ~ (p=0.095 n=5+5) Template-46 23.7MB/s ± 0% 23.0MB/s ± 1% -2.95% (p=0.008 n=5+5) [Geo mean] 82.2MB/s 82.3MB/s +0.04% Frame-pointer is enabled on Linux by default but can be disabled by setting: GOEXPERIMENT=noframepointer. Fixes #10110 Change-Id: I1bfaca6dba29a63009d7c6ab04ed7a1413d9479e Reviewed-on: https://go-review.googlesource.com/61511 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Ben Shi
|
3ca3e89bb6 |
cmd/compile: optimize arm64 with indexed FP load/store
The FP load/store on arm64 have register indexed forms. And this CL implements this optimization. 1. The total size of pkg/android_arm64 (excluding cmd/compile) decreases about 400 bytes. 2. There is no regression in the go1 benchmark, the test case GobEncode even gets slight improvement, excluding noise. name old time/op new time/op delta BinaryTree17-4 19.0s ± 0% 19.0s ± 1% ~ (p=0.817 n=29+29) Fannkuch11-4 9.94s ± 0% 9.95s ± 0% +0.03% (p=0.010 n=24+30) FmtFprintfEmpty-4 233ns ± 0% 233ns ± 0% ~ (all equal) FmtFprintfString-4 427ns ± 0% 427ns ± 0% ~ (p=0.649 n=30+30) FmtFprintfInt-4 471ns ± 0% 471ns ± 0% ~ (all equal) FmtFprintfIntInt-4 730ns ± 0% 730ns ± 0% ~ (all equal) FmtFprintfPrefixedInt-4 889ns ± 0% 889ns ± 0% ~ (all equal) FmtFprintfFloat-4 1.21µs ± 0% 1.21µs ± 0% +0.04% (p=0.012 n=20+30) FmtManyArgs-4 2.99µs ± 0% 2.99µs ± 0% ~ (p=0.651 n=29+29) GobDecode-4 42.4ms ± 1% 42.3ms ± 1% -0.27% (p=0.001 n=29+28) GobEncode-4 37.8ms ±11% 36.0ms ± 0% -4.67% (p=0.000 n=30+26) Gzip-4 1.98s ± 1% 1.96s ± 1% -1.26% (p=0.000 n=30+30) Gunzip-4 175ms ± 0% 175ms ± 0% ~ (p=0.988 n=29+29) HTTPClientServer-4 854µs ± 5% 860µs ± 5% ~ (p=0.236 n=28+29) JSONEncode-4 88.8ms ± 0% 87.9ms ± 0% -1.00% (p=0.000 n=24+26) JSONDecode-4 390ms ± 1% 392ms ± 2% +0.48% (p=0.025 n=30+30) Mandelbrot200-4 19.5ms ± 0% 19.5ms ± 0% ~ (p=0.894 n=24+29) GoParse-4 20.3ms ± 0% 20.1ms ± 1% -0.94% (p=0.000 n=27+26) RegexpMatchEasy0_32-4 451ns ± 0% 451ns ± 0% ~ (p=0.578 n=30+30) RegexpMatchEasy0_1K-4 1.63µs ± 0% 1.63µs ± 0% ~ (p=0.298 n=30+28) RegexpMatchEasy1_32-4 431ns ± 0% 434ns ± 0% +0.67% (p=0.000 n=30+29) RegexpMatchEasy1_1K-4 2.60µs ± 0% 2.64µs ± 0% +1.36% (p=0.000 n=28+26) RegexpMatchMedium_32-4 744ns ± 0% 744ns ± 0% ~ (p=0.474 n=29+29) RegexpMatchMedium_1K-4 223µs ± 0% 223µs ± 0% -0.08% (p=0.038 n=26+30) RegexpMatchHard_32-4 12.2µs ± 0% 12.3µs ± 0% +0.27% (p=0.000 n=29+30) RegexpMatchHard_1K-4 373µs ± 0% 373µs ± 0% ~ (p=0.219 n=29+28) Revcomp-4 2.84s ± 0% 2.84s ± 0% ~ (p=0.130 n=28+28) Template-4 394ms ± 1% 392ms ± 1% -0.52% (p=0.001 n=30+30) TimeParse-4 1.93µs ± 0% 1.93µs ± 0% ~ (p=0.587 n=29+30) TimeFormat-4 2.00µs ± 0% 2.00µs ± 0% +0.07% (p=0.001 n=28+27) [Geo mean] 306µs 305µs -0.17% name old speed new speed delta GobDecode-4 18.1MB/s ± 1% 18.2MB/s ± 1% +0.27% (p=0.001 n=29+28) GobEncode-4 20.3MB/s ±10% 21.3MB/s ± 0% +4.64% (p=0.000 n=30+26) Gzip-4 9.79MB/s ± 1% 9.91MB/s ± 1% +1.28% (p=0.000 n=30+30) Gunzip-4 111MB/s ± 0% 111MB/s ± 0% ~ (p=0.988 n=29+29) JSONEncode-4 21.8MB/s ± 0% 22.1MB/s ± 0% +1.02% (p=0.000 n=24+26) JSONDecode-4 4.97MB/s ± 1% 4.95MB/s ± 2% -0.45% (p=0.031 n=30+30) GoParse-4 2.85MB/s ± 1% 2.88MB/s ± 1% +1.03% (p=0.000 n=30+26) RegexpMatchEasy0_32-4 70.9MB/s ± 0% 70.9MB/s ± 0% ~ (p=0.904 n=29+28) RegexpMatchEasy0_1K-4 627MB/s ± 0% 627MB/s ± 0% ~ (p=0.156 n=30+30) RegexpMatchEasy1_32-4 74.2MB/s ± 0% 73.7MB/s ± 0% -0.67% (p=0.000 n=30+29) RegexpMatchEasy1_1K-4 393MB/s ± 0% 388MB/s ± 0% -1.34% (p=0.000 n=28+26) RegexpMatchMedium_32-4 1.34MB/s ± 0% 1.34MB/s ± 0% ~ (all equal) RegexpMatchMedium_1K-4 4.59MB/s ± 0% 4.59MB/s ± 0% +0.07% (p=0.035 n=25+30) RegexpMatchHard_32-4 2.61MB/s ± 0% 2.61MB/s ± 0% -0.11% (p=0.002 n=28+30) RegexpMatchHard_1K-4 2.75MB/s ± 0% 2.75MB/s ± 0% +0.15% (p=0.001 n=30+24) Revcomp-4 89.4MB/s ± 0% 89.4MB/s ± 0% ~ (p=0.140 n=28+28) Template-4 4.93MB/s ± 1% 4.95MB/s ± 1% +0.51% (p=0.001 n=30+30) [Geo mean] 18.4MB/s 18.4MB/s +0.37% Change-Id: I9a6b521a971b21cfb51064e8e9b853cef8a1d071 Reviewed-on: https://go-review.googlesource.com/124636 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
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2b69ad0b3c |
cmd/compile: optimize arm's comparison
The CMP/CMN/TST/TEQ perform similar to SUB/ADD/AND/XOR except the result is abondoned, and only NZCV flags are affected. This CL implements further optimization with them. 1. A micro benchmark test gets more than 9% improvment. TSTTEQ-4 6.99ms ± 0% 6.35ms ± 0% -9.15% (p=0.000 n=33+36) (https://github.com/benshi001/ugo1/blob/master/tstteq2_test.go) 2. The go1 benckmark shows no regression, excluding noise. name old time/op new time/op delta BinaryTree17-4 25.7s ± 1% 25.7s ± 1% ~ (p=0.830 n=40+40) Fannkuch11-4 13.3s ± 0% 13.2s ± 0% -0.65% (p=0.000 n=40+34) FmtFprintfEmpty-4 394ns ± 0% 394ns ± 0% ~ (p=0.819 n=40+40) FmtFprintfString-4 677ns ± 0% 677ns ± 0% +0.06% (p=0.039 n=39+40) FmtFprintfInt-4 707ns ± 0% 706ns ± 0% -0.14% (p=0.000 n=40+39) FmtFprintfIntInt-4 1.04µs ± 0% 1.04µs ± 0% +0.10% (p=0.000 n=29+31) FmtFprintfPrefixedInt-4 1.10µs ± 0% 1.11µs ± 0% +0.65% (p=0.000 n=39+37) FmtFprintfFloat-4 2.27µs ± 0% 2.26µs ± 0% -0.53% (p=0.000 n=39+40) FmtManyArgs-4 3.96µs ± 0% 3.96µs ± 0% +0.10% (p=0.000 n=39+40) GobDecode-4 53.4ms ± 1% 52.8ms ± 2% -1.10% (p=0.000 n=39+39) GobEncode-4 50.3ms ± 3% 50.4ms ± 2% ~ (p=0.089 n=40+39) Gzip-4 2.62s ± 0% 2.64s ± 0% +0.60% (p=0.000 n=40+39) Gunzip-4 312ms ± 0% 312ms ± 0% +0.02% (p=0.030 n=40+39) HTTPClientServer-4 1.01ms ± 7% 0.98ms ± 7% -2.37% (p=0.000 n=40+39) JSONEncode-4 126ms ± 1% 126ms ± 1% -0.38% (p=0.004 n=39+39) JSONDecode-4 423ms ± 0% 426ms ± 2% +0.72% (p=0.001 n=39+40) Mandelbrot200-4 18.4ms ± 0% 18.4ms ± 0% +0.04% (p=0.000 n=38+40) GoParse-4 22.8ms ± 0% 22.6ms ± 0% -0.68% (p=0.000 n=35+40) RegexpMatchEasy0_32-4 699ns ± 0% 704ns ± 0% +0.73% (p=0.000 n=27+40) RegexpMatchEasy0_1K-4 4.27µs ± 0% 4.26µs ± 0% -0.09% (p=0.000 n=35+38) RegexpMatchEasy1_32-4 741ns ± 0% 735ns ± 0% -0.85% (p=0.000 n=40+35) RegexpMatchEasy1_1K-4 5.53µs ± 0% 5.49µs ± 0% -0.69% (p=0.000 n=39+40) RegexpMatchMedium_32-4 1.07µs ± 0% 1.04µs ± 2% -2.34% (p=0.000 n=40+40) RegexpMatchMedium_1K-4 261µs ± 0% 261µs ± 0% -0.16% (p=0.000 n=40+39) RegexpMatchHard_32-4 14.9µs ± 0% 14.9µs ± 0% -0.18% (p=0.000 n=39+40) RegexpMatchHard_1K-4 445µs ± 0% 446µs ± 0% +0.09% (p=0.000 n=36+34) Revcomp-4 41.8ms ± 1% 41.8ms ± 1% ~ (p=0.595 n=39+38) Template-4 530ms ± 1% 528ms ± 1% -0.49% (p=0.000 n=40+40) TimeParse-4 3.39µs ± 0% 3.42µs ± 0% +0.98% (p=0.000 n=36+38) TimeFormat-4 6.12µs ± 0% 6.07µs ± 0% -0.81% (p=0.000 n=34+38) [Geo mean] 384µs 383µs -0.24% name old speed new speed delta GobDecode-4 14.4MB/s ± 1% 14.5MB/s ± 2% +1.11% (p=0.000 n=39+39) GobEncode-4 15.3MB/s ± 3% 15.2MB/s ± 2% ~ (p=0.104 n=40+39) Gzip-4 7.40MB/s ± 1% 7.36MB/s ± 0% -0.60% (p=0.000 n=40+39) Gunzip-4 62.2MB/s ± 0% 62.1MB/s ± 0% -0.02% (p=0.047 n=40+39) JSONEncode-4 15.4MB/s ± 1% 15.4MB/s ± 2% +0.39% (p=0.002 n=39+39) JSONDecode-4 4.59MB/s ± 0% 4.56MB/s ± 2% -0.71% (p=0.000 n=39+40) GoParse-4 2.54MB/s ± 0% 2.56MB/s ± 0% +0.72% (p=0.000 n=26+40) RegexpMatchEasy0_32-4 45.8MB/s ± 0% 45.4MB/s ± 0% -0.75% (p=0.000 n=38+40) RegexpMatchEasy0_1K-4 240MB/s ± 0% 240MB/s ± 0% +0.09% (p=0.000 n=35+38) RegexpMatchEasy1_32-4 43.1MB/s ± 0% 43.5MB/s ± 0% +0.84% (p=0.000 n=40+39) RegexpMatchEasy1_1K-4 185MB/s ± 0% 186MB/s ± 0% +0.69% (p=0.000 n=39+40) RegexpMatchMedium_32-4 936kB/s ± 1% 959kB/s ± 2% +2.38% (p=0.000 n=40+40) RegexpMatchMedium_1K-4 3.92MB/s ± 0% 3.93MB/s ± 0% +0.18% (p=0.000 n=39+40) RegexpMatchHard_32-4 2.15MB/s ± 0% 2.15MB/s ± 0% +0.19% (p=0.000 n=40+40) RegexpMatchHard_1K-4 2.30MB/s ± 0% 2.30MB/s ± 0% ~ (all equal) Revcomp-4 60.8MB/s ± 1% 60.8MB/s ± 1% ~ (p=0.600 n=39+38) Template-4 3.66MB/s ± 1% 3.68MB/s ± 1% +0.46% (p=0.000 n=40+40) [Geo mean] 12.8MB/s 12.8MB/s +0.27% Change-Id: I849161169ecf0876a04b7c1d3990fa8d1435215e Reviewed-on: https://go-review.googlesource.com/122855 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
e03220a594 |
cmd/compile: optimize 386 code with FLDPI
FLDPI pushes the constant pi to 387's register stack, which is more efficient than MOVSSconst/MOVSDconst. 1. This optimization reduces 0.3KB of the total size of pkg/linux_386 (exlcuding cmd/compile). 2. There is little regression in the go1 benchmark. name old time/op new time/op delta BinaryTree17-4 3.30s ± 3% 3.30s ± 2% ~ (p=0.759 n=40+39) Fannkuch11-4 3.53s ± 1% 3.54s ± 1% ~ (p=0.168 n=40+40) FmtFprintfEmpty-4 45.5ns ± 3% 45.6ns ± 3% ~ (p=0.553 n=40+40) FmtFprintfString-4 78.4ns ± 3% 78.3ns ± 3% ~ (p=0.593 n=40+40) FmtFprintfInt-4 88.8ns ± 2% 89.9ns ± 2% ~ (p=0.083 n=40+33) FmtFprintfIntInt-4 140ns ± 4% 140ns ± 4% ~ (p=0.656 n=40+40) FmtFprintfPrefixedInt-4 180ns ± 2% 181ns ± 3% +0.53% (p=0.050 n=40+40) FmtFprintfFloat-4 408ns ± 4% 411ns ± 3% ~ (p=0.112 n=40+40) FmtManyArgs-4 599ns ± 3% 602ns ± 3% ~ (p=0.784 n=40+40) GobDecode-4 7.24ms ± 6% 7.30ms ± 5% ~ (p=0.171 n=40+40) GobEncode-4 6.98ms ± 5% 6.89ms ± 8% ~ (p=0.107 n=40+40) Gzip-4 396ms ± 4% 396ms ± 3% ~ (p=0.852 n=40+40) Gunzip-4 41.3ms ± 3% 41.5ms ± 4% ~ (p=0.221 n=40+40) HTTPClientServer-4 63.4µs ± 3% 63.4µs ± 2% ~ (p=0.895 n=39+40) JSONEncode-4 17.5ms ± 2% 17.5ms ± 3% ~ (p=0.090 n=40+40) JSONDecode-4 60.6ms ± 3% 60.1ms ± 4% ~ (p=0.184 n=40+40) Mandelbrot200-4 7.80ms ± 3% 7.78ms ± 2% ~ (p=0.512 n=40+40) GoParse-4 3.30ms ± 3% 3.28ms ± 2% -0.61% (p=0.034 n=40+40) RegexpMatchEasy0_32-4 104ns ± 4% 103ns ± 4% ~ (p=0.118 n=40+40) RegexpMatchEasy0_1K-4 850ns ± 2% 848ns ± 2% ~ (p=0.370 n=40+40) RegexpMatchEasy1_32-4 112ns ± 4% 112ns ± 4% ~ (p=0.848 n=40+40) RegexpMatchEasy1_1K-4 1.04µs ± 4% 1.03µs ± 4% ~ (p=0.333 n=40+40) RegexpMatchMedium_32-4 132ns ± 4% 131ns ± 3% ~ (p=0.527 n=40+40) RegexpMatchMedium_1K-4 43.4µs ± 3% 43.5µs ± 3% ~ (p=0.111 n=40+40) RegexpMatchHard_32-4 2.24µs ± 4% 2.24µs ± 4% ~ (p=0.441 n=40+40) RegexpMatchHard_1K-4 67.9µs ± 3% 68.0µs ± 3% ~ (p=0.095 n=40+40) Revcomp-4 1.84s ± 2% 1.84s ± 2% ~ (p=0.677 n=40+40) Template-4 68.4ms ± 3% 68.6ms ± 3% ~ (p=0.345 n=40+40) TimeParse-4 433ns ± 3% 433ns ± 3% ~ (p=0.403 n=40+40) TimeFormat-4 407ns ± 3% 406ns ± 3% ~ (p=0.900 n=40+40) [Geo mean] 67.1µs 67.2µs +0.04% name old speed new speed delta GobDecode-4 106MB/s ± 5% 105MB/s ± 5% ~ (p=0.173 n=40+40) GobEncode-4 110MB/s ± 5% 112MB/s ± 9% ~ (p=0.104 n=40+40) Gzip-4 49.0MB/s ± 4% 49.1MB/s ± 4% ~ (p=0.836 n=40+40) Gunzip-4 471MB/s ± 3% 468MB/s ± 4% ~ (p=0.218 n=40+40) JSONEncode-4 111MB/s ± 2% 111MB/s ± 3% ~ (p=0.090 n=40+40) JSONDecode-4 32.0MB/s ± 3% 32.3MB/s ± 4% ~ (p=0.194 n=40+40) GoParse-4 17.6MB/s ± 3% 17.7MB/s ± 2% +0.62% (p=0.035 n=40+40) RegexpMatchEasy0_32-4 307MB/s ± 4% 309MB/s ± 4% +0.70% (p=0.041 n=40+40) RegexpMatchEasy0_1K-4 1.20GB/s ± 3% 1.21GB/s ± 2% ~ (p=0.353 n=40+40) RegexpMatchEasy1_32-4 285MB/s ± 3% 284MB/s ± 4% ~ (p=0.384 n=40+40) RegexpMatchEasy1_1K-4 988MB/s ± 4% 992MB/s ± 3% ~ (p=0.335 n=40+40) RegexpMatchMedium_32-4 7.56MB/s ± 4% 7.57MB/s ± 4% ~ (p=0.314 n=40+40) RegexpMatchMedium_1K-4 23.6MB/s ± 3% 23.6MB/s ± 3% ~ (p=0.107 n=40+40) RegexpMatchHard_32-4 14.3MB/s ± 4% 14.3MB/s ± 4% ~ (p=0.429 n=40+40) RegexpMatchHard_1K-4 15.1MB/s ± 3% 15.1MB/s ± 3% ~ (p=0.099 n=40+40) Revcomp-4 138MB/s ± 2% 138MB/s ± 2% ~ (p=0.658 n=40+40) Template-4 28.4MB/s ± 3% 28.3MB/s ± 3% ~ (p=0.331 n=40+40) [Geo mean] 80.8MB/s 80.8MB/s +0.09% Change-Id: I0cb715eead68ade097a302e7fb80ccbd1d1b511e Reviewed-on: https://go-review.googlesource.com/130975 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
|
3bc34385fa |
cmd/compile: introduce more read-modify-write operations for amd64
Add suport of read-modify-write for AND/SUB/AND/OR/XOR on amd64. 1. The total size of pkg/linux_amd64 decreases about 4KB, excluding cmd/compile. 2. The go1 benchmark shows a little improvement, excluding noise. name old time/op new time/op delta BinaryTree17-4 2.63s ± 3% 2.65s ± 4% +1.01% (p=0.037 n=35+35) Fannkuch11-4 2.33s ± 2% 2.39s ± 2% +2.49% (p=0.000 n=35+35) FmtFprintfEmpty-4 45.4ns ± 5% 40.8ns ± 6% -10.09% (p=0.000 n=35+35) FmtFprintfString-4 73.3ns ± 4% 70.9ns ± 3% -3.23% (p=0.000 n=30+35) FmtFprintfInt-4 79.9ns ± 4% 79.5ns ± 3% ~ (p=0.736 n=34+35) FmtFprintfIntInt-4 126ns ± 4% 125ns ± 4% ~ (p=0.083 n=35+35) FmtFprintfPrefixedInt-4 152ns ± 6% 152ns ± 3% ~ (p=0.855 n=34+35) FmtFprintfFloat-4 215ns ± 4% 213ns ± 4% ~ (p=0.066 n=35+35) FmtManyArgs-4 522ns ± 3% 506ns ± 3% -3.15% (p=0.000 n=35+35) GobDecode-4 6.45ms ± 8% 6.51ms ± 7% +0.96% (p=0.026 n=35+35) GobEncode-4 6.10ms ± 6% 6.02ms ± 8% ~ (p=0.160 n=35+35) Gzip-4 228ms ± 3% 221ms ± 3% -2.92% (p=0.000 n=35+35) Gunzip-4 37.5ms ± 4% 37.2ms ± 3% -0.78% (p=0.036 n=35+35) HTTPClientServer-4 58.7µs ± 2% 59.2µs ± 1% +0.80% (p=0.000 n=33+33) JSONEncode-4 12.0ms ± 3% 12.2ms ± 3% +1.84% (p=0.008 n=35+35) JSONDecode-4 57.0ms ± 4% 56.6ms ± 3% ~ (p=0.320 n=35+35) Mandelbrot200-4 3.82ms ± 3% 3.79ms ± 3% ~ (p=0.074 n=35+35) GoParse-4 3.21ms ± 5% 3.24ms ± 4% ~ (p=0.119 n=35+35) RegexpMatchEasy0_32-4 76.3ns ± 4% 75.4ns ± 4% -1.14% (p=0.014 n=34+33) RegexpMatchEasy0_1K-4 251ns ± 4% 254ns ± 3% +1.28% (p=0.016 n=35+35) RegexpMatchEasy1_32-4 69.6ns ± 3% 70.1ns ± 3% +0.82% (p=0.005 n=35+35) RegexpMatchEasy1_1K-4 367ns ± 4% 376ns ± 4% +2.47% (p=0.000 n=35+35) RegexpMatchMedium_32-4 108ns ± 5% 104ns ± 4% -3.18% (p=0.000 n=35+35) RegexpMatchMedium_1K-4 33.8µs ± 3% 32.7µs ± 3% -3.27% (p=0.000 n=35+35) RegexpMatchHard_32-4 1.55µs ± 3% 1.52µs ± 3% -1.64% (p=0.000 n=35+35) RegexpMatchHard_1K-4 46.6µs ± 3% 46.6µs ± 4% ~ (p=0.149 n=35+35) Revcomp-4 416ms ± 7% 412ms ± 6% -0.95% (p=0.033 n=33+35) Template-4 64.3ms ± 3% 62.4ms ± 7% -2.94% (p=0.000 n=35+35) TimeParse-4 320ns ± 2% 322ns ± 3% ~ (p=0.589 n=35+35) TimeFormat-4 300ns ± 3% 300ns ± 3% ~ (p=0.597 n=35+35) [Geo mean] 47.4µs 47.0µs -0.86% name old speed new speed delta GobDecode-4 119MB/s ± 7% 118MB/s ± 7% -0.96% (p=0.027 n=35+35) GobEncode-4 126MB/s ± 7% 127MB/s ± 6% ~ (p=0.157 n=34+34) Gzip-4 85.3MB/s ± 3% 87.9MB/s ± 3% +3.02% (p=0.000 n=35+35) Gunzip-4 518MB/s ± 4% 522MB/s ± 3% +0.79% (p=0.037 n=35+35) JSONEncode-4 162MB/s ± 3% 159MB/s ± 3% -1.81% (p=0.009 n=35+35) JSONDecode-4 34.1MB/s ± 4% 34.3MB/s ± 3% ~ (p=0.318 n=35+35) GoParse-4 18.0MB/s ± 5% 17.9MB/s ± 4% ~ (p=0.117 n=35+35) RegexpMatchEasy0_32-4 419MB/s ± 3% 425MB/s ± 4% +1.46% (p=0.003 n=32+33) RegexpMatchEasy0_1K-4 4.07GB/s ± 4% 4.02GB/s ± 3% -1.28% (p=0.014 n=35+35) RegexpMatchEasy1_32-4 460MB/s ± 3% 456MB/s ± 4% -0.82% (p=0.004 n=35+35) RegexpMatchEasy1_1K-4 2.79GB/s ± 4% 2.72GB/s ± 4% -2.39% (p=0.000 n=35+35) RegexpMatchMedium_32-4 9.23MB/s ± 4% 9.53MB/s ± 4% +3.16% (p=0.000 n=35+35) RegexpMatchMedium_1K-4 30.3MB/s ± 3% 31.3MB/s ± 3% +3.38% (p=0.000 n=35+35) RegexpMatchHard_32-4 20.7MB/s ± 3% 21.0MB/s ± 3% +1.67% (p=0.000 n=35+35) RegexpMatchHard_1K-4 22.0MB/s ± 3% 21.9MB/s ± 4% ~ (p=0.277 n=35+33) Revcomp-4 612MB/s ± 7% 618MB/s ± 6% +0.96% (p=0.034 n=33+35) Template-4 30.2MB/s ± 3% 31.1MB/s ± 6% +3.05% (p=0.000 n=35+35) [Geo mean] 123MB/s 124MB/s +0.64% Change-Id: Ia025da272e07d0069413824bfff3471b106d6280 Reviewed-on: https://go-review.googlesource.com/121535 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
|
a0a7e9fc0c |
cmd/compile: implement "OPC $imm, (mem)" for 386
New read-modify-write operations are introduced in this CL for 386. 1. The total size of pkg/linux_386 decreases about 10KB (excluding cmd/compile). 2. The go1 benchmark shows little regression. name old time/op new time/op delta BinaryTree17-4 3.32s ± 4% 3.29s ± 2% ~ (p=0.059 n=30+30) Fannkuch11-4 3.49s ± 1% 3.46s ± 1% -0.92% (p=0.001 n=30+30) FmtFprintfEmpty-4 47.7ns ± 2% 46.8ns ± 5% -1.93% (p=0.011 n=25+30) FmtFprintfString-4 79.5ns ± 7% 80.2ns ± 3% +0.89% (p=0.001 n=28+29) FmtFprintfInt-4 90.5ns ± 2% 92.1ns ± 2% +1.82% (p=0.014 n=22+30) FmtFprintfIntInt-4 141ns ± 1% 144ns ± 3% +2.23% (p=0.013 n=22+30) FmtFprintfPrefixedInt-4 183ns ± 2% 184ns ± 3% ~ (p=0.080 n=21+30) FmtFprintfFloat-4 409ns ± 3% 412ns ± 3% +0.83% (p=0.040 n=30+30) FmtManyArgs-4 597ns ± 6% 607ns ± 4% +1.71% (p=0.006 n=30+30) GobDecode-4 7.21ms ± 5% 7.18ms ± 6% ~ (p=0.665 n=30+30) GobEncode-4 7.17ms ± 6% 7.09ms ± 7% ~ (p=0.117 n=29+30) Gzip-4 413ms ± 4% 399ms ± 4% -3.48% (p=0.000 n=30+30) Gunzip-4 41.3ms ± 4% 41.7ms ± 3% +1.05% (p=0.011 n=30+30) HTTPClientServer-4 63.5µs ± 3% 62.9µs ± 2% -0.97% (p=0.017 n=30+27) JSONEncode-4 20.3ms ± 5% 20.1ms ± 5% -1.16% (p=0.004 n=30+30) JSONDecode-4 66.2ms ± 4% 67.7ms ± 4% +2.21% (p=0.000 n=30+30) Mandelbrot200-4 5.16ms ± 3% 5.18ms ± 3% ~ (p=0.123 n=30+30) GoParse-4 3.23ms ± 2% 3.27ms ± 2% +1.08% (p=0.006 n=30+30) RegexpMatchEasy0_32-4 98.9ns ± 5% 97.1ns ± 4% -1.83% (p=0.006 n=30+30) RegexpMatchEasy0_1K-4 842ns ± 3% 842ns ± 3% ~ (p=0.550 n=30+30) RegexpMatchEasy1_32-4 107ns ± 4% 105ns ± 4% -1.93% (p=0.012 n=30+30) RegexpMatchEasy1_1K-4 1.03µs ± 4% 1.04µs ± 4% ~ (p=0.304 n=30+30) RegexpMatchMedium_32-4 132ns ± 2% 129ns ± 4% -2.02% (p=0.000 n=21+30) RegexpMatchMedium_1K-4 44.1µs ± 4% 43.8µs ± 3% ~ (p=0.641 n=30+30) RegexpMatchHard_32-4 2.26µs ± 4% 2.23µs ± 4% -1.28% (p=0.023 n=30+30) RegexpMatchHard_1K-4 68.1µs ± 3% 68.6µs ± 4% ~ (p=0.089 n=30+30) Revcomp-4 1.85s ± 2% 1.84s ± 2% ~ (p=0.072 n=30+30) Template-4 69.2ms ± 3% 68.5ms ± 3% -1.04% (p=0.012 n=30+30) TimeParse-4 441ns ± 3% 446ns ± 4% +1.21% (p=0.001 n=30+30) TimeFormat-4 415ns ± 3% 415ns ± 3% ~ (p=0.436 n=30+30) [Geo mean] 67.0µs 66.9µs -0.17% name old speed new speed delta GobDecode-4 107MB/s ± 5% 107MB/s ± 6% ~ (p=0.663 n=30+30) GobEncode-4 107MB/s ± 6% 108MB/s ± 7% ~ (p=0.117 n=29+30) Gzip-4 47.0MB/s ± 4% 48.7MB/s ± 4% +3.61% (p=0.000 n=30+30) Gunzip-4 470MB/s ± 4% 466MB/s ± 4% -1.05% (p=0.011 n=30+30) JSONEncode-4 95.6MB/s ± 5% 96.7MB/s ± 5% +1.16% (p=0.005 n=30+30) JSONDecode-4 29.3MB/s ± 4% 28.7MB/s ± 4% -2.17% (p=0.000 n=30+30) GoParse-4 17.9MB/s ± 2% 17.7MB/s ± 2% -1.06% (p=0.007 n=30+30) RegexpMatchEasy0_32-4 323MB/s ± 5% 329MB/s ± 4% +1.93% (p=0.006 n=30+30) RegexpMatchEasy0_1K-4 1.22GB/s ± 3% 1.22GB/s ± 3% ~ (p=0.496 n=30+30) RegexpMatchEasy1_32-4 298MB/s ± 4% 303MB/s ± 4% +1.84% (p=0.017 n=30+30) RegexpMatchEasy1_1K-4 995MB/s ± 4% 989MB/s ± 4% ~ (p=0.307 n=30+30) RegexpMatchMedium_32-4 7.56MB/s ± 4% 7.74MB/s ± 4% +2.46% (p=0.000 n=22+30) RegexpMatchMedium_1K-4 23.2MB/s ± 4% 23.4MB/s ± 3% ~ (p=0.651 n=30+30) RegexpMatchHard_32-4 14.2MB/s ± 4% 14.3MB/s ± 4% +1.29% (p=0.021 n=30+30) RegexpMatchHard_1K-4 15.0MB/s ± 3% 14.9MB/s ± 4% ~ (p=0.069 n=30+29) Revcomp-4 138MB/s ± 2% 138MB/s ± 2% ~ (p=0.072 n=30+30) Template-4 28.1MB/s ± 3% 28.4MB/s ± 3% +1.05% (p=0.012 n=30+30) [Geo mean] 79.7MB/s 80.2MB/s +0.60% Change-Id: I44a1dfc942c9a385904553c4fe1fa8e509c8aa31 Reviewed-on: https://go-review.googlesource.com/120916 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
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90f2fa0037 |
cmd/compile: optimize 386 code with MULLload/DIVSSload/DIVSDload
IMULL/DIVSS/DIVSD all can take the source operand from memory directly. And this CL implement that optimization. 1. The total size of pkg/linux_386 decreases about 84KB (excluding cmd/compile). 2. The go1 benchmark shows little regression in total (excluding noise). name old time/op new time/op delta BinaryTree17-4 3.29s ± 2% 3.27s ± 4% ~ (p=0.192 n=30+30) Fannkuch11-4 3.49s ± 2% 3.54s ± 1% +1.48% (p=0.000 n=30+30) FmtFprintfEmpty-4 45.9ns ± 3% 46.3ns ± 4% +0.89% (p=0.037 n=30+30) FmtFprintfString-4 78.8ns ± 3% 78.7ns ± 4% ~ (p=0.209 n=30+27) FmtFprintfInt-4 91.0ns ± 2% 90.3ns ± 2% -0.82% (p=0.031 n=30+27) FmtFprintfIntInt-4 142ns ± 4% 143ns ± 4% ~ (p=0.136 n=30+30) FmtFprintfPrefixedInt-4 181ns ± 3% 183ns ± 4% +1.40% (p=0.005 n=30+30) FmtFprintfFloat-4 404ns ± 4% 408ns ± 3% ~ (p=0.397 n=30+30) FmtManyArgs-4 601ns ± 3% 609ns ± 5% ~ (p=0.059 n=30+30) GobDecode-4 7.21ms ± 5% 7.24ms ± 5% ~ (p=0.612 n=30+30) GobEncode-4 6.91ms ± 6% 6.91ms ± 6% ~ (p=0.797 n=30+30) Gzip-4 398ms ± 6% 399ms ± 4% ~ (p=0.173 n=30+30) Gunzip-4 41.7ms ± 3% 41.8ms ± 3% ~ (p=0.423 n=30+30) HTTPClientServer-4 62.3µs ± 2% 62.7µs ± 3% ~ (p=0.085 n=29+30) JSONEncode-4 21.0ms ± 4% 20.7ms ± 5% -1.39% (p=0.014 n=30+30) JSONDecode-4 66.3ms ± 3% 67.4ms ± 1% +1.71% (p=0.003 n=30+24) Mandelbrot200-4 5.15ms ± 3% 5.16ms ± 3% ~ (p=0.697 n=30+30) GoParse-4 3.24ms ± 3% 3.27ms ± 4% +0.91% (p=0.032 n=30+30) RegexpMatchEasy0_32-4 101ns ± 5% 99ns ± 4% -1.82% (p=0.008 n=29+30) RegexpMatchEasy0_1K-4 848ns ± 4% 841ns ± 2% -0.77% (p=0.043 n=30+30) RegexpMatchEasy1_32-4 106ns ± 6% 106ns ± 3% ~ (p=0.939 n=29+30) RegexpMatchEasy1_1K-4 1.02µs ± 3% 1.03µs ± 4% ~ (p=0.297 n=28+30) RegexpMatchMedium_32-4 129ns ± 4% 127ns ± 4% ~ (p=0.073 n=30+30) RegexpMatchMedium_1K-4 43.9µs ± 3% 43.8µs ± 3% ~ (p=0.186 n=30+30) RegexpMatchHard_32-4 2.24µs ± 4% 2.22µs ± 4% ~ (p=0.332 n=30+29) RegexpMatchHard_1K-4 68.0µs ± 4% 67.5µs ± 3% ~ (p=0.290 n=30+30) Revcomp-4 1.85s ± 3% 1.85s ± 3% ~ (p=0.358 n=30+30) Template-4 69.6ms ± 3% 70.0ms ± 4% ~ (p=0.273 n=30+30) TimeParse-4 445ns ± 3% 441ns ± 3% ~ (p=0.494 n=30+30) TimeFormat-4 412ns ± 3% 412ns ± 6% ~ (p=0.841 n=30+30) [Geo mean] 66.7µs 66.8µs +0.13% name old speed new speed delta GobDecode-4 107MB/s ± 5% 106MB/s ± 5% ~ (p=0.615 n=30+30) GobEncode-4 111MB/s ± 6% 111MB/s ± 6% ~ (p=0.790 n=30+30) Gzip-4 48.8MB/s ± 6% 48.7MB/s ± 4% ~ (p=0.167 n=30+30) Gunzip-4 465MB/s ± 3% 465MB/s ± 3% ~ (p=0.420 n=30+30) JSONEncode-4 92.4MB/s ± 4% 93.7MB/s ± 5% +1.42% (p=0.015 n=30+30) JSONDecode-4 29.3MB/s ± 3% 28.8MB/s ± 1% -1.72% (p=0.003 n=30+24) GoParse-4 17.9MB/s ± 3% 17.7MB/s ± 4% -0.89% (p=0.037 n=30+30) RegexpMatchEasy0_32-4 317MB/s ± 8% 324MB/s ± 4% +2.14% (p=0.006 n=30+30) RegexpMatchEasy0_1K-4 1.21GB/s ± 4% 1.22GB/s ± 2% +0.77% (p=0.036 n=30+30) RegexpMatchEasy1_32-4 298MB/s ± 7% 299MB/s ± 4% ~ (p=0.511 n=30+30) RegexpMatchEasy1_1K-4 1.00GB/s ± 3% 1.00GB/s ± 4% ~ (p=0.304 n=28+30) RegexpMatchMedium_32-4 7.75MB/s ± 4% 7.82MB/s ± 4% ~ (p=0.089 n=30+30) RegexpMatchMedium_1K-4 23.3MB/s ± 3% 23.4MB/s ± 3% ~ (p=0.181 n=30+30) RegexpMatchHard_32-4 14.3MB/s ± 4% 14.4MB/s ± 4% ~ (p=0.320 n=30+29) RegexpMatchHard_1K-4 15.1MB/s ± 4% 15.2MB/s ± 3% ~ (p=0.273 n=30+30) Revcomp-4 137MB/s ± 3% 137MB/s ± 3% ~ (p=0.352 n=30+30) Template-4 27.9MB/s ± 3% 27.7MB/s ± 4% ~ (p=0.277 n=30+30) [Geo mean] 79.9MB/s 80.1MB/s +0.15% Change-Id: I97333cd8ddabb3c7c88ca5aa9e14a005b74d306d Reviewed-on: https://go-review.googlesource.com/120695 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ben Shi
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705f3c74e6 |
cmd/compile: optimize AMD64 with DIVSSload and DIVSDload
DIVSSload & DIVSDload directly operate on a memory operand. And binary size can be reduced by them, while the performance is not affected. The total size of pkg/linux_amd64 (excluding cmd/compile) decreases about 6KB. There is little regression in the go1 benchmark test (excluding noise). name old time/op new time/op delta BinaryTree17-4 2.63s ± 4% 2.62s ± 4% ~ (p=0.809 n=30+30) Fannkuch11-4 2.40s ± 2% 2.40s ± 2% ~ (p=0.109 n=30+30) FmtFprintfEmpty-4 43.1ns ± 4% 43.2ns ± 9% ~ (p=0.168 n=30+30) FmtFprintfString-4 73.6ns ± 4% 74.1ns ± 4% ~ (p=0.069 n=30+30) FmtFprintfInt-4 81.0ns ± 3% 81.4ns ± 5% ~ (p=0.350 n=30+30) FmtFprintfIntInt-4 127ns ± 4% 129ns ± 4% +0.99% (p=0.021 n=30+30) FmtFprintfPrefixedInt-4 156ns ± 4% 155ns ± 4% ~ (p=0.415 n=30+30) FmtFprintfFloat-4 219ns ± 4% 218ns ± 4% ~ (p=0.071 n=30+30) FmtManyArgs-4 522ns ± 3% 518ns ± 3% -0.68% (p=0.034 n=30+30) GobDecode-4 6.49ms ± 6% 6.52ms ± 6% ~ (p=0.832 n=30+30) GobEncode-4 6.10ms ± 9% 6.14ms ± 7% ~ (p=0.485 n=30+30) Gzip-4 227ms ± 1% 224ms ± 4% ~ (p=0.484 n=24+30) Gunzip-4 37.2ms ± 3% 36.8ms ± 4% ~ (p=0.889 n=30+30) HTTPClientServer-4 58.9µs ± 1% 58.7µs ± 2% -0.42% (p=0.003 n=28+28) JSONEncode-4 12.0ms ± 3% 12.0ms ± 4% ~ (p=0.523 n=30+30) JSONDecode-4 54.6ms ± 4% 54.5ms ± 4% ~ (p=0.708 n=30+30) Mandelbrot200-4 3.78ms ± 4% 3.81ms ± 3% +0.99% (p=0.016 n=30+30) GoParse-4 3.20ms ± 4% 3.20ms ± 5% ~ (p=0.994 n=30+30) RegexpMatchEasy0_32-4 77.0ns ± 4% 75.9ns ± 3% -1.39% (p=0.006 n=29+30) RegexpMatchEasy0_1K-4 255ns ± 4% 253ns ± 4% ~ (p=0.091 n=30+30) RegexpMatchEasy1_32-4 69.7ns ± 3% 70.3ns ± 4% ~ (p=0.120 n=30+30) RegexpMatchEasy1_1K-4 373ns ± 2% 378ns ± 3% +1.43% (p=0.000 n=21+26) RegexpMatchMedium_32-4 107ns ± 2% 108ns ± 4% +1.50% (p=0.012 n=22+30) RegexpMatchMedium_1K-4 34.0µs ± 1% 34.3µs ± 3% +1.08% (p=0.008 n=24+30) RegexpMatchHard_32-4 1.53µs ± 3% 1.54µs ± 3% ~ (p=0.234 n=30+30) RegexpMatchHard_1K-4 46.7µs ± 4% 47.0µs ± 4% ~ (p=0.420 n=30+30) Revcomp-4 411ms ± 7% 415ms ± 6% ~ (p=0.059 n=30+30) Template-4 65.5ms ± 5% 66.9ms ± 4% +2.21% (p=0.001 n=30+30) TimeParse-4 317ns ± 3% 311ns ± 3% -1.97% (p=0.000 n=30+30) TimeFormat-4 293ns ± 3% 294ns ± 3% ~ (p=0.243 n=30+30) [Geo mean] 47.4µs 47.5µs +0.17% name old speed new speed delta GobDecode-4 118MB/s ± 5% 118MB/s ± 6% ~ (p=0.832 n=30+30) GobEncode-4 125MB/s ± 7% 125MB/s ± 7% ~ (p=0.625 n=29+30) Gzip-4 85.3MB/s ± 1% 86.6MB/s ± 4% ~ (p=0.486 n=24+30) Gunzip-4 522MB/s ± 3% 527MB/s ± 4% ~ (p=0.889 n=30+30) JSONEncode-4 162MB/s ± 3% 162MB/s ± 4% ~ (p=0.520 n=30+30) JSONDecode-4 35.5MB/s ± 4% 35.6MB/s ± 4% ~ (p=0.701 n=30+30) GoParse-4 18.1MB/s ± 4% 18.1MB/s ± 4% ~ (p=0.891 n=29+30) RegexpMatchEasy0_32-4 416MB/s ± 4% 422MB/s ± 3% +1.43% (p=0.005 n=29+30) RegexpMatchEasy0_1K-4 4.01GB/s ± 4% 4.04GB/s ± 4% ~ (p=0.091 n=30+30) RegexpMatchEasy1_32-4 460MB/s ± 3% 456MB/s ± 5% ~ (p=0.123 n=30+30) RegexpMatchEasy1_1K-4 2.74GB/s ± 2% 2.70GB/s ± 3% -1.33% (p=0.000 n=22+26) RegexpMatchMedium_32-4 9.39MB/s ± 3% 9.19MB/s ± 4% -2.06% (p=0.001 n=28+30) RegexpMatchMedium_1K-4 30.1MB/s ± 1% 29.8MB/s ± 3% -1.04% (p=0.008 n=24+30) RegexpMatchHard_32-4 20.9MB/s ± 3% 20.8MB/s ± 3% ~ (p=0.234 n=30+30) RegexpMatchHard_1K-4 21.9MB/s ± 4% 21.8MB/s ± 4% ~ (p=0.420 n=30+30) Revcomp-4 619MB/s ± 7% 612MB/s ± 7% ~ (p=0.059 n=30+30) Template-4 29.6MB/s ± 4% 29.0MB/s ± 4% -2.16% (p=0.002 n=30+30) [Geo mean] 123MB/s 123MB/s -0.33% Change-Id: Ia59e077feae4f2824df79059daea4d0f678e3e4c Reviewed-on: https://go-review.googlesource.com/120275 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
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Ilya Tocar
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a3593685cf |
cmd/compile/internal/ssa: remove useless zero extension
We generate MOVBLZX for byte-sized LoadReg, so (MOVBQZX (LoadReg (Arg))) is the same as (LoadReg (Arg)). Remove those zero extension where possible. Triggers several times during all.bash. Fixes #25378 Updates #15300 Change-Id: If50656e66f217832a13ee8f49c47997f4fcc093a Reviewed-on: https://go-review.googlesource.com/115617 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Ilya Tocar
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c292b32f33 |
cmd/compile: enable disjoint memmove inlining on amd64
Memmove can use AVX/prefetches/other optional instructions, so only do it for small sizes, when call overhead dominates. Change-Id: Ice5e93deb11462217f7fb5fc350b703109bb4090 Reviewed-on: https://go-review.googlesource.com/112517 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Michael Munday <mike.munday@ibm.com> |
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Ben Shi
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0a382e0b7f |
cmd/compile: optimize ARMv7 code
"AND $0xffff0000, Rx" will be encoded to 12 bytes. 1. MOVWload from the constant pool to Rtmp 2. AND Rtmp, Rx 3. a 4-byte item in the constant pool It can be simplified to 8 bytes on ARMv7, since ARMv7 has "MOVW $imm-16, Rx". 1. MOVW $0xffff, Rtmp 2. BIC Rtmp, Rx The above optimization also applies to BICconst, ADDconst and SUBconst. 1. The total size of pkg/android_arm (excluding cmd/compile) decreases about 2KB. 2. The go1 benchmark shows no regression, exlcuding noise. name old time/op new time/op delta BinaryTree17-4 25.5s ± 1% 25.2s ± 1% -0.85% (p=0.000 n=30+30) Fannkuch11-4 13.3s ± 0% 13.3s ± 0% +0.16% (p=0.000 n=24+25) FmtFprintfEmpty-4 397ns ± 0% 394ns ± 0% -0.64% (p=0.000 n=30+30) FmtFprintfString-4 679ns ± 0% 678ns ± 0% ~ (p=0.093 n=30+29) FmtFprintfInt-4 708ns ± 0% 707ns ± 0% -0.19% (p=0.000 n=27+28) FmtFprintfIntInt-4 1.05µs ± 0% 1.05µs ± 0% -0.07% (p=0.001 n=18+30) FmtFprintfPrefixedInt-4 1.16µs ± 0% 1.15µs ± 0% -0.41% (p=0.000 n=29+30) FmtFprintfFloat-4 2.26µs ± 0% 2.23µs ± 1% -1.40% (p=0.000 n=30+30) FmtManyArgs-4 3.96µs ± 0% 3.95µs ± 0% -0.29% (p=0.000 n=29+30) GobDecode-4 52.9ms ± 2% 53.4ms ± 2% +0.92% (p=0.004 n=28+30) GobEncode-4 49.7ms ± 2% 49.8ms ± 2% ~ (p=0.890 n=30+26) Gzip-4 2.61s ± 0% 2.60s ± 0% -0.36% (p=0.000 n=29+29) Gunzip-4 312ms ± 0% 311ms ± 0% -0.13% (p=0.000 n=30+28) HTTPClientServer-4 1.02ms ± 8% 1.00ms ± 7% ~ (p=0.224 n=29+26) JSONEncode-4 125ms ± 1% 124ms ± 3% -1.05% (p=0.000 n=25+30) JSONDecode-4 432ms ± 1% 436ms ± 2% ~ (p=0.277 n=26+30) Mandelbrot200-4 18.4ms ± 0% 18.4ms ± 0% +0.02% (p=0.001 n=28+25) GoParse-4 22.4ms ± 1% 22.3ms ± 1% -0.41% (p=0.000 n=28+28) RegexpMatchEasy0_32-4 697ns ± 0% 706ns ± 0% +1.23% (p=0.000 n=19+30) RegexpMatchEasy0_1K-4 4.27µs ± 0% 4.26µs ± 0% -0.06% (p=0.000 n=30+30) RegexpMatchEasy1_32-4 741ns ± 0% 735ns ± 0% -0.86% (p=0.000 n=26+30) RegexpMatchEasy1_1K-4 5.49µs ± 0% 5.49µs ± 0% -0.03% (p=0.023 n=25+30) RegexpMatchMedium_32-4 1.05µs ± 2% 1.04µs ± 2% ~ (p=0.893 n=30+30) RegexpMatchMedium_1K-4 261µs ± 0% 261µs ± 0% -0.11% (p=0.000 n=29+30) RegexpMatchHard_32-4 14.9µs ± 0% 14.9µs ± 0% -0.36% (p=0.000 n=23+29) RegexpMatchHard_1K-4 446µs ± 0% 445µs ± 0% -0.17% (p=0.000 n=30+29) Revcomp-4 41.6ms ± 1% 41.7ms ± 1% +0.27% (p=0.040 n=28+30) Template-4 531ms ± 0% 532ms ± 1% ~ (p=0.059 n=30+30) TimeParse-4 3.40µs ± 0% 3.33µs ± 0% -2.02% (p=0.000 n=30+30) TimeFormat-4 6.14µs ± 0% 6.11µs ± 0% -0.45% (p=0.000 n=27+29) [Geo mean] 384µs 383µs -0.27% name old speed new speed delta GobDecode-4 14.5MB/s ± 2% 14.4MB/s ± 2% -0.90% (p=0.005 n=28+30) GobEncode-4 15.4MB/s ± 2% 15.4MB/s ± 2% ~ (p=0.741 n=30+25) Gzip-4 7.44MB/s ± 0% 7.47MB/s ± 1% +0.37% (p=0.000 n=25+30) Gunzip-4 62.3MB/s ± 0% 62.4MB/s ± 0% +0.13% (p=0.000 n=30+28) JSONEncode-4 15.5MB/s ± 1% 15.6MB/s ± 3% +1.07% (p=0.000 n=25+30) JSONDecode-4 4.48MB/s ± 0% 4.46MB/s ± 2% ~ (p=0.655 n=23+30) GoParse-4 2.58MB/s ± 1% 2.59MB/s ± 1% +0.42% (p=0.000 n=28+29) RegexpMatchEasy0_32-4 45.9MB/s ± 0% 45.3MB/s ± 0% -1.23% (p=0.000 n=28+30) RegexpMatchEasy0_1K-4 240MB/s ± 0% 240MB/s ± 0% +0.07% (p=0.000 n=30+30) RegexpMatchEasy1_32-4 43.2MB/s ± 0% 43.5MB/s ± 0% +0.85% (p=0.000 n=30+28) RegexpMatchEasy1_1K-4 186MB/s ± 0% 186MB/s ± 0% +0.03% (p=0.026 n=25+30) RegexpMatchMedium_32-4 955kB/s ± 2% 960kB/s ± 2% ~ (p=0.084 n=30+30) RegexpMatchMedium_1K-4 3.92MB/s ± 0% 3.93MB/s ± 0% +0.14% (p=0.000 n=29+30) RegexpMatchHard_32-4 2.14MB/s ± 0% 2.15MB/s ± 0% +0.31% (p=0.000 n=30+26) RegexpMatchHard_1K-4 2.30MB/s ± 0% 2.30MB/s ± 0% ~ (all equal) Revcomp-4 61.1MB/s ± 1% 60.9MB/s ± 1% -0.27% (p=0.039 n=28+30) Template-4 3.66MB/s ± 0% 3.65MB/s ± 1% -0.14% (p=0.045 n=30+30) [Geo mean] 12.8MB/s 12.8MB/s +0.04% Change-Id: I02370e2584b4c041fddd324c97628fd6f0c12183 Reviewed-on: https://go-review.googlesource.com/123179 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
||
|
Ben Shi
|
556971316f |
cmd/compile: optimize 386's comparison
CMPL/CMPW/CMPB can take a memory operand on 386, and this CL implements that optimization. 1. The total size of pkg/linux_386 decreases about 45KB, excluding cmd/compile. 2. The go1 benchmark shows a little improvement. name old time/op new time/op delta BinaryTree17-4 3.36s ± 2% 3.37s ± 3% ~ (p=0.537 n=40+40) Fannkuch11-4 3.59s ± 1% 3.53s ± 2% -1.58% (p=0.000 n=40+40) FmtFprintfEmpty-4 46.0ns ± 3% 45.8ns ± 3% ~ (p=0.249 n=40+40) FmtFprintfString-4 80.0ns ± 4% 78.8ns ± 3% -1.49% (p=0.001 n=40+40) FmtFprintfInt-4 89.7ns ± 2% 90.3ns ± 2% +0.74% (p=0.003 n=40+40) FmtFprintfIntInt-4 144ns ± 3% 143ns ± 3% -0.95% (p=0.003 n=40+40) FmtFprintfPrefixedInt-4 181ns ± 4% 180ns ± 2% ~ (p=0.103 n=40+40) FmtFprintfFloat-4 412ns ± 3% 408ns ± 4% -0.97% (p=0.018 n=40+40) FmtManyArgs-4 607ns ± 4% 605ns ± 4% ~ (p=0.148 n=40+40) GobDecode-4 7.19ms ± 4% 7.24ms ± 5% ~ (p=0.340 n=40+40) GobEncode-4 7.04ms ± 9% 6.99ms ± 9% ~ (p=0.289 n=40+40) Gzip-4 400ms ± 6% 398ms ± 5% ~ (p=0.168 n=40+40) Gunzip-4 41.2ms ± 3% 41.7ms ± 3% +1.40% (p=0.001 n=40+40) HTTPClientServer-4 62.5µs ± 1% 62.1µs ± 2% -0.61% (p=0.000 n=37+37) JSONEncode-4 20.7ms ± 4% 20.4ms ± 3% -1.60% (p=0.000 n=40+40) JSONDecode-4 69.4ms ± 4% 69.2ms ± 6% ~ (p=0.177 n=40+40) Mandelbrot200-4 5.22ms ± 6% 5.21ms ± 3% ~ (p=0.531 n=40+40) GoParse-4 3.29ms ± 3% 3.28ms ± 3% ~ (p=0.321 n=40+39) RegexpMatchEasy0_32-4 104ns ± 4% 103ns ± 7% -0.89% (p=0.040 n=40+40) RegexpMatchEasy0_1K-4 852ns ± 3% 853ns ± 2% ~ (p=0.357 n=40+40) RegexpMatchEasy1_32-4 113ns ± 8% 113ns ± 3% ~ (p=0.906 n=40+40) RegexpMatchEasy1_1K-4 1.03µs ± 4% 1.03µs ± 5% ~ (p=0.326 n=40+40) RegexpMatchMedium_32-4 136ns ± 3% 133ns ± 3% -2.31% (p=0.000 n=40+40) RegexpMatchMedium_1K-4 44.0µs ± 3% 43.7µs ± 3% ~ (p=0.053 n=40+40) RegexpMatchHard_32-4 2.27µs ± 3% 2.26µs ± 4% ~ (p=0.391 n=40+40) RegexpMatchHard_1K-4 68.0µs ± 3% 68.9µs ± 3% +1.28% (p=0.000 n=40+40) Revcomp-4 1.86s ± 5% 1.86s ± 2% ~ (p=0.950 n=40+40) Template-4 73.4ms ± 4% 69.9ms ± 7% -4.78% (p=0.000 n=40+40) TimeParse-4 449ns ± 4% 441ns ± 5% -1.76% (p=0.000 n=40+40) TimeFormat-4 416ns ± 3% 417ns ± 4% ~ (p=0.304 n=40+40) [Geo mean] 67.7µs 67.3µs -0.55% name old speed new speed delta GobDecode-4 107MB/s ± 4% 106MB/s ± 5% ~ (p=0.336 n=40+40) GobEncode-4 109MB/s ± 5% 110MB/s ± 9% ~ (p=0.142 n=38+40) Gzip-4 48.5MB/s ± 5% 48.8MB/s ± 5% ~ (p=0.172 n=40+40) Gunzip-4 472MB/s ± 3% 465MB/s ± 3% -1.39% (p=0.001 n=40+40) JSONEncode-4 93.6MB/s ± 4% 95.1MB/s ± 3% +1.61% (p=0.000 n=40+40) JSONDecode-4 28.0MB/s ± 3% 28.1MB/s ± 6% ~ (p=0.181 n=40+40) GoParse-4 17.6MB/s ± 3% 17.7MB/s ± 3% ~ (p=0.350 n=40+39) RegexpMatchEasy0_32-4 308MB/s ± 4% 311MB/s ± 6% +0.96% (p=0.025 n=40+40) RegexpMatchEasy0_1K-4 1.20GB/s ± 3% 1.20GB/s ± 2% ~ (p=0.317 n=40+40) RegexpMatchEasy1_32-4 282MB/s ± 7% 282MB/s ± 3% ~ (p=0.516 n=40+40) RegexpMatchEasy1_1K-4 994MB/s ± 4% 991MB/s ± 5% ~ (p=0.319 n=40+40) RegexpMatchMedium_32-4 7.31MB/s ± 3% 7.49MB/s ± 3% +2.46% (p=0.000 n=40+40) RegexpMatchMedium_1K-4 23.3MB/s ± 3% 23.4MB/s ± 3% ~ (p=0.052 n=40+40) RegexpMatchHard_32-4 14.1MB/s ± 3% 14.1MB/s ± 4% ~ (p=0.391 n=40+40) RegexpMatchHard_1K-4 15.1MB/s ± 3% 14.9MB/s ± 3% -1.27% (p=0.000 n=40+40) Revcomp-4 137MB/s ± 5% 137MB/s ± 2% ~ (p=0.942 n=40+40) Template-4 26.5MB/s ± 4% 27.8MB/s ± 7% +5.03% (p=0.000 n=40+40) [Geo mean] 78.6MB/s 79.0MB/s +0.57% Change-Id: Idcacc6881ef57cd7dc33aa87b711282842b72a53 Reviewed-on: https://go-review.googlesource.com/126618 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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|
Ben Shi
|
b75c5c5992 |
cmd/compile: optimize AMD64 with more read-modify-write operations
6 more operations which do read-modify-write with a constant source operand are added. 1. The total size of pkg/linux_amd64 decreases about 3KB, excluding cmd/compile. 2. The go1 benckmark shows a slight improvement. name old time/op new time/op delta BinaryTree17-4 2.61s ± 4% 2.67s ± 2% +2.26% (p=0.000 n=30+29) Fannkuch11-4 2.39s ± 2% 2.32s ± 2% -2.67% (p=0.000 n=30+30) FmtFprintfEmpty-4 44.0ns ± 4% 41.7ns ± 4% -5.15% (p=0.000 n=30+30) FmtFprintfString-4 74.2ns ± 4% 72.3ns ± 4% -2.59% (p=0.000 n=30+30) FmtFprintfInt-4 81.7ns ± 3% 78.8ns ± 4% -3.54% (p=0.000 n=27+30) FmtFprintfIntInt-4 130ns ± 4% 124ns ± 5% -4.60% (p=0.000 n=30+30) FmtFprintfPrefixedInt-4 154ns ± 3% 152ns ± 3% -1.13% (p=0.012 n=30+30) FmtFprintfFloat-4 215ns ± 4% 212ns ± 5% -1.56% (p=0.002 n=30+30) FmtManyArgs-4 522ns ± 3% 512ns ± 3% -1.84% (p=0.001 n=30+30) GobDecode-4 6.42ms ± 5% 6.49ms ± 7% ~ (p=0.070 n=30+30) GobEncode-4 6.07ms ± 8% 5.98ms ± 8% ~ (p=0.150 n=30+30) Gzip-4 236ms ± 4% 223ms ± 4% -5.57% (p=0.000 n=30+30) Gunzip-4 37.4ms ± 3% 36.7ms ± 4% -2.03% (p=0.000 n=30+30) HTTPClientServer-4 58.7µs ± 1% 58.5µs ± 2% -0.37% (p=0.018 n=30+29) JSONEncode-4 12.0ms ± 4% 12.1ms ± 3% ~ (p=0.112 n=30+30) JSONDecode-4 54.5ms ± 3% 55.5ms ± 4% +1.80% (p=0.006 n=30+30) Mandelbrot200-4 3.78ms ± 4% 3.78ms ± 4% ~ (p=0.173 n=30+30) GoParse-4 3.16ms ± 5% 3.22ms ± 5% +1.75% (p=0.010 n=30+30) RegexpMatchEasy0_32-4 76.6ns ± 1% 75.9ns ± 3% ~ (p=0.672 n=25+30) RegexpMatchEasy0_1K-4 252ns ± 3% 253ns ± 3% +0.57% (p=0.027 n=30+30) RegexpMatchEasy1_32-4 69.8ns ± 4% 70.2ns ± 6% ~ (p=0.539 n=30+30) RegexpMatchEasy1_1K-4 374ns ± 3% 373ns ± 5% ~ (p=0.263 n=30+30) RegexpMatchMedium_32-4 107ns ± 4% 109ns ± 3% ~ (p=0.067 n=30+30) RegexpMatchMedium_1K-4 33.9µs ± 5% 34.1µs ± 4% ~ (p=0.297 n=30+30) RegexpMatchHard_32-4 1.54µs ± 3% 1.56µs ± 4% +1.43% (p=0.002 n=30+30) RegexpMatchHard_1K-4 46.6µs ± 3% 47.0µs ± 3% ~ (p=0.055 n=30+30) Revcomp-4 411ms ± 6% 407ms ± 6% ~ (p=0.219 n=30+30) Template-4 66.8ms ± 3% 64.8ms ± 5% -3.01% (p=0.000 n=30+30) TimeParse-4 312ns ± 2% 319ns ± 3% +2.50% (p=0.000 n=30+30) TimeFormat-4 296ns ± 5% 299ns ± 3% +0.93% (p=0.005 n=30+30) [Geo mean] 47.5µs 47.1µs -0.75% name old speed new speed delta GobDecode-4 120MB/s ± 5% 118MB/s ± 6% ~ (p=0.072 n=30+30) GobEncode-4 127MB/s ± 8% 129MB/s ± 8% ~ (p=0.150 n=30+30) Gzip-4 82.1MB/s ± 4% 87.0MB/s ± 4% +5.90% (p=0.000 n=30+30) Gunzip-4 519MB/s ± 4% 529MB/s ± 4% +2.07% (p=0.001 n=30+30) JSONEncode-4 162MB/s ± 4% 161MB/s ± 3% ~ (p=0.110 n=30+30) JSONDecode-4 35.6MB/s ± 3% 35.0MB/s ± 4% -1.77% (p=0.007 n=30+30) GoParse-4 18.3MB/s ± 4% 18.0MB/s ± 4% -1.72% (p=0.009 n=30+30) RegexpMatchEasy0_32-4 418MB/s ± 1% 422MB/s ± 3% ~ (p=0.645 n=25+30) RegexpMatchEasy0_1K-4 4.06GB/s ± 3% 4.04GB/s ± 3% -0.57% (p=0.033 n=30+30) RegexpMatchEasy1_32-4 459MB/s ± 4% 456MB/s ± 6% ~ (p=0.530 n=30+30) RegexpMatchEasy1_1K-4 2.73GB/s ± 3% 2.75GB/s ± 5% ~ (p=0.279 n=30+30) RegexpMatchMedium_32-4 9.28MB/s ± 5% 9.18MB/s ± 4% ~ (p=0.086 n=30+30) RegexpMatchMedium_1K-4 30.2MB/s ± 4% 30.0MB/s ± 4% ~ (p=0.300 n=30+30) RegexpMatchHard_32-4 20.8MB/s ± 3% 20.5MB/s ± 4% -1.41% (p=0.002 n=30+30) RegexpMatchHard_1K-4 22.0MB/s ± 3% 21.8MB/s ± 3% ~ (p=0.051 n=30+30) Revcomp-4 619MB/s ± 7% 625MB/s ± 7% ~ (p=0.219 n=30+30) Template-4 29.0MB/s ± 3% 29.9MB/s ± 4% +3.11% (p=0.000 n=30+30) [Geo mean] 123MB/s 123MB/s +0.28% Change-Id: I850652cfd53329c1af804b7f57f4393d8097bb0d Reviewed-on: https://go-review.googlesource.com/121135 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
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Ben Shi
|
de0e72610b |
test/codegen: add more combined store tests for arm64
Some combined store optimization was already implemented in go-1.11, but there is no corresponding test cases. Change-Id: Iebdad186e92047942e53a74f2c20b390922e1e9c Reviewed-on: https://go-review.googlesource.com/122915 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Ben Shi
|
f9800a9473 |
test/codegen: add more test cases for arm64
More test cases of combined load for arm64. Change-Id: I7a9f4dcec6930f161cbded1f47dbf7fcef1db4f1 Reviewed-on: https://go-review.googlesource.com/122582 Run-TryBot: Ben Shi <powerman1st@163.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Ben Shi
|
8a85bce215 |
test/codegen: improve test cases for arm64
1. Some incorrect test cases are disabled. 2. Some wrong test cases are corrected. 3. Some new test cases are added. Change-Id: Ib5d0473d55159f233ddab79f96967eaec7b08597 Reviewed-on: https://go-review.googlesource.com/113736 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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David Chase
|
c2c1822b12 |
cmd/compile: assign and preserve statement boundaries.
A new pass run after ssa building (before any other optimization) identifies the "first" ssa node for each statement. Other "noise" nodes are tagged as being never appropriate for a statement boundary (e.g., VarKill, VarDef, Phi). Rewrite, deadcode, cse, and nilcheck are modified to move the statement boundaries forward whenever possible if a boundary-tagged ssa value is removed; never-boundary nodes are ignored in this search (some operations involving constants are also tagged as never-boundary and also ignored because they are likely to be moved or removed during optimization). Code generation treats all nodes except those explicitly marked as statement boundaries as "not statement" nodes, and floats statement boundaries to the beginning of each same-line run of instructions found within a basic block. Line number html conversion was modified to make statement boundary nodes a bit more obvious by prepending a "+". The code in fuse.go that glued together the value slices of two blocks produced a result that depended on the former capacities (not lengths) of the two slices. This causes differences in the 386 bootstrap, and also can sometimes put values into an order that does a worse job of preserving statement boundaries when values are removed. Portions of two delve tests that had caught problems were incorporated into ssa/debug_test.go. There are some opportunities to do better with optimized code, but the next-ing is not lying or overly jumpy. Over 4 CLs, compilebench geomean measured binary size increase of 3.5% and compile user time increase of 3.8% (this is after optimization to reuse a sparse map instead of creating multiple maps.) This CL worsens the optimized-debugging experience with Delve; we need to work with the delve team so that they can use the is_stmt marks that we're emitting now. The reference output changes from time to time depending on other changes in the compiler, sometimes better, sometimes worse. This CL now includes a test ensuring that 99+% of the lines in the Go command itself (a handy optimized binary) include is_stmt markers. Change-Id: I359c94e06843f1eb41f9da437bd614885aa9644a Reviewed-on: https://go-review.googlesource.com/102435 Run-TryBot: David Chase <drchase@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> |
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Lynn Boger
|
e4172e5f5e |
cmd/compile/internal/ssa: initialize t.UInt in SetTypPtrs()
Initialization of t.UInt is missing from SetTypPtrs in config.go, preventing rules that use it from matching when they should. This adds the initialization to allow those rules to work. Updated test/codegen/rotate.go to test for this case, which appears in math/bits RotateLeft32 and RotateLeft64. There had been a testcase for this in go 1.10 but that went away when asm_test.go was removed. Change-Id: I82fc825ad8364df6fc36a69a1e448214d2e24ed5 Reviewed-on: https://go-review.googlesource.com/112518 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Michael Munday
|
6d00e8c478 |
cmd/compile: convert memmove call into Move when arguments are disjoint
Move ops can be faster than memmove calls because the number of bytes to be moved is fixed and they don't incur the overhead of a call. This change allows memmove to be converted into a Move op when the arguments are disjoint. The optimization is only enabled on s390x at the moment, however other architectures may also benefit from it in the future. The memmove inlining rule triggers an extra 12 times when compiling the standard library. It will most likely make more of a difference as the disjoint function is improved over time (to recognize fresh heap allocations for example). Change-Id: I9af570dcfff28257b8e59e0ff584a46d8e248310 Reviewed-on: https://go-review.googlesource.com/110064 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
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Martin Möhrmann
|
aee71dd70b |
cmd/compile: optimize map-clearing range idiom
replace map clears of the form:
for k := range m {
delete(m, k)
}
(where m is map with key type that is reflexive for ==)
with a new runtime function that clears the maps backing
array with a memclr and reinitializes the hmap struct.
Map key types that for example contain floats are not
replaced by this optimization since NaN keys cannot
be deleted from maps using delete.
name old time/op new time/op delta
GoMapClear/Reflexive/1 92.2ns ± 1% 47.1ns ± 2% -48.89% (p=0.000 n=9+9)
GoMapClear/Reflexive/10 108ns ± 1% 48ns ± 2% -55.68% (p=0.000 n=10+10)
GoMapClear/Reflexive/100 303ns ± 2% 110ns ± 3% -63.56% (p=0.000 n=10+10)
GoMapClear/Reflexive/1000 3.58µs ± 3% 1.23µs ± 2% -65.49% (p=0.000 n=9+10)
GoMapClear/Reflexive/10000 28.2µs ± 3% 10.3µs ± 2% -63.55% (p=0.000 n=9+10)
GoMapClear/NonReflexive/1 121ns ± 2% 124ns ± 7% ~ (p=0.097 n=10+10)
GoMapClear/NonReflexive/10 137ns ± 2% 139ns ± 3% +1.53% (p=0.033 n=10+10)
GoMapClear/NonReflexive/100 331ns ± 3% 334ns ± 2% ~ (p=0.342 n=10+10)
GoMapClear/NonReflexive/1000 3.64µs ± 3% 3.64µs ± 2% ~ (p=0.887 n=9+10)
GoMapClear/NonReflexive/10000 28.1µs ± 2% 28.4µs ± 3% ~ (p=0.247 n=10+10)
Fixes #20138
Change-Id: I181332a8ef434a4f0d89659f492d8711db3f3213
Reviewed-on: https://go-review.googlesource.com/110055
Reviewed-by: Keith Randall <khr@golang.org>
|
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Michael Munday
|
8af0c77df3 |
cmd/compile: simplify shift lowering on s390x
Use conditional moves instead of subtractions with borrow to handle saturation cases. This allows us to delete the SUBE/SUBEW ops and associated rules from the SSA backend. Using conditional moves also means we can detect when shift values are masked so I've added some new rules to constant fold the relevant comparisons and masking ops. Also use the new shiftIsBounded() function to avoid generating code to handle saturation cases where possible. Updates #25167 for s390x. Change-Id: Ief9991c91267c9151ce4c5ec07642abb4dcc1c0d Reviewed-on: https://go-review.googlesource.com/110070 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
||
|
Lynn Boger
|
28edaf4584 |
cmd/compile,test: combine byte loads and stores on ppc64le
CL 74410 added rules to combine consecutive byte loads and stores when the byte order was little endian for ppc64le. This is the corresponding change for bytes that are in big endian order. These rules are all intended for a little endian target arch. This adds new testcases in test/codegen/memcombine.go Fixes #22496 Updates #24242 Benchmark improvement for encoding/binary: name old time/op new time/op delta ReadSlice1000Int32s-16 11.0µs ± 0% 9.0µs ± 0% -17.47% (p=0.029 n=4+4) ReadStruct-16 2.47µs ± 1% 2.48µs ± 0% +0.67% (p=0.114 n=4+4) ReadInts-16 642ns ± 1% 630ns ± 1% -2.02% (p=0.029 n=4+4) WriteInts-16 654ns ± 0% 653ns ± 1% -0.08% (p=0.629 n=4+4) WriteSlice1000Int32s-16 8.75µs ± 0% 8.20µs ± 0% -6.19% (p=0.029 n=4+4) PutUint16-16 1.16ns ± 0% 0.93ns ± 0% -19.83% (p=0.029 n=4+4) PutUint32-16 1.16ns ± 0% 0.93ns ± 0% -19.83% (p=0.029 n=4+4) PutUint64-16 1.85ns ± 0% 0.93ns ± 0% -49.73% (p=0.029 n=4+4) LittleEndianPutUint16-16 1.03ns ± 0% 0.93ns ± 0% -9.71% (p=0.029 n=4+4) LittleEndianPutUint32-16 0.93ns ± 0% 0.93ns ± 0% ~ (all equal) LittleEndianPutUint64-16 0.93ns ± 0% 0.93ns ± 0% ~ (all equal) PutUvarint32-16 43.0ns ± 0% 43.1ns ± 0% +0.12% (p=0.429 n=4+4) PutUvarint64-16 174ns ± 0% 175ns ± 0% +0.29% (p=0.429 n=4+4) Updates made to functions in gcm.go to enable their matching. An existing testcase prevents these functions from being replaced by those in encoding/binary due to import dependencies. Change-Id: Idb3bd1e6e7b12d86cd828fb29cb095848a3e485a Reviewed-on: https://go-review.googlesource.com/98136 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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|
Michael Munday
|
f31a18ded4 |
cmd/compile: add some generic composite type optimizations
Propagate values through some wide Zero/Move operations. Among
other things this allows us to optimize some kinds of array
initialization. For example, the following code no longer
requires a temporary be allocated on the stack. Instead it
writes the values directly into the return value.
func f(i uint32) [4]uint32 {
return [4]uint32{i, i+1, i+2, i+3}
}
The return value is unnecessarily cleared but removing that is
probably a task for dead store analysis (I think it needs to
be able to match multiple Store ops to wide Zero ops).
In order to reliably remove stack variables that are rendered
unnecessary by these new rules I've added a new generic version
of the unread autos elimination pass.
These rules are triggered more than 5000 times when building and
testing the standard library.
Updates #15925 (fixes for arrays of up to 4 elements).
Updates #24386 (fixes for up to 4 kept elements).
Updates #24416.
compilebench results:
name old time/op new time/op delta
Template 353ms ± 5% 359ms ± 3% ~ (p=0.143 n=10+10)
Unicode 219ms ± 1% 217ms ± 4% ~ (p=0.740 n=7+10)
GoTypes 1.26s ± 1% 1.26s ± 2% ~ (p=0.549 n=9+10)
Compiler 6.00s ± 1% 6.08s ± 1% +1.42% (p=0.000 n=9+8)
SSA 15.3s ± 2% 15.6s ± 1% +2.43% (p=0.000 n=10+10)
Flate 237ms ± 2% 240ms ± 2% +1.31% (p=0.015 n=10+10)
GoParser 285ms ± 1% 285ms ± 1% ~ (p=0.878 n=8+8)
Reflect 797ms ± 3% 807ms ± 2% ~ (p=0.065 n=9+10)
Tar 334ms ± 0% 335ms ± 4% ~ (p=0.460 n=8+10)
XML 419ms ± 0% 423ms ± 1% +0.91% (p=0.001 n=7+9)
StdCmd 46.0s ± 0% 46.4s ± 0% +0.85% (p=0.000 n=9+9)
name old user-time/op new user-time/op delta
Template 337ms ± 3% 346ms ± 5% ~ (p=0.053 n=9+10)
Unicode 205ms ±10% 205ms ± 8% ~ (p=1.000 n=10+10)
GoTypes 1.22s ± 2% 1.21s ± 3% ~ (p=0.436 n=10+10)
Compiler 5.85s ± 1% 5.93s ± 0% +1.46% (p=0.000 n=10+8)
SSA 14.9s ± 1% 15.3s ± 1% +2.62% (p=0.000 n=10+10)
Flate 229ms ± 4% 228ms ± 6% ~ (p=0.796 n=10+10)
GoParser 271ms ± 3% 275ms ± 4% ~ (p=0.165 n=10+10)
Reflect 779ms ± 5% 775ms ± 2% ~ (p=0.971 n=10+10)
Tar 317ms ± 4% 319ms ± 5% ~ (p=0.853 n=10+10)
XML 404ms ± 4% 409ms ± 5% ~ (p=0.436 n=10+10)
name old alloc/op new alloc/op delta
Template 34.9MB ± 0% 35.0MB ± 0% +0.26% (p=0.000 n=10+10)
Unicode 29.3MB ± 0% 29.3MB ± 0% +0.02% (p=0.000 n=10+10)
GoTypes 115MB ± 0% 115MB ± 0% +0.30% (p=0.000 n=10+10)
Compiler 519MB ± 0% 521MB ± 0% +0.30% (p=0.000 n=10+10)
SSA 1.55GB ± 0% 1.57GB ± 0% +1.34% (p=0.000 n=10+9)
Flate 24.1MB ± 0% 24.2MB ± 0% +0.10% (p=0.000 n=10+10)
GoParser 28.1MB ± 0% 28.1MB ± 0% +0.07% (p=0.000 n=10+10)
Reflect 78.7MB ± 0% 78.7MB ± 0% +0.03% (p=0.000 n=8+10)
Tar 34.4MB ± 0% 34.5MB ± 0% +0.12% (p=0.000 n=10+10)
XML 43.2MB ± 0% 43.2MB ± 0% +0.13% (p=0.000 n=10+10)
name old allocs/op new allocs/op delta
Template 330k ± 0% 330k ± 0% -0.01% (p=0.017 n=10+10)
Unicode 337k ± 0% 337k ± 0% +0.01% (p=0.000 n=9+10)
GoTypes 1.15M ± 0% 1.15M ± 0% +0.03% (p=0.000 n=10+10)
Compiler 4.77M ± 0% 4.77M ± 0% +0.03% (p=0.000 n=9+10)
SSA 12.5M ± 0% 12.6M ± 0% +1.16% (p=0.000 n=10+10)
Flate 221k ± 0% 221k ± 0% +0.05% (p=0.000 n=9+10)
GoParser 275k ± 0% 275k ± 0% +0.01% (p=0.014 n=10+9)
Reflect 944k ± 0% 944k ± 0% -0.02% (p=0.000 n=10+10)
Tar 324k ± 0% 323k ± 0% -0.12% (p=0.000 n=10+10)
XML 384k ± 0% 384k ± 0% -0.01% (p=0.001 n=10+10)
name old object-bytes new object-bytes delta
Template 476kB ± 0% 476kB ± 0% -0.04% (p=0.000 n=10+10)
Unicode 218kB ± 0% 218kB ± 0% ~ (all equal)
GoTypes 1.58MB ± 0% 1.58MB ± 0% -0.04% (p=0.000 n=10+10)
Compiler 6.25MB ± 0% 6.24MB ± 0% -0.09% (p=0.000 n=10+10)
SSA 15.9MB ± 0% 16.1MB ± 0% +1.22% (p=0.000 n=10+10)
Flate 304kB ± 0% 304kB ± 0% -0.13% (p=0.000 n=10+10)
GoParser 370kB ± 0% 370kB ± 0% -0.00% (p=0.000 n=10+10)
Reflect 1.27MB ± 0% 1.27MB ± 0% -0.12% (p=0.000 n=10+10)
Tar 421kB ± 0% 419kB ± 0% -0.64% (p=0.000 n=10+10)
XML 518kB ± 0% 517kB ± 0% -0.12% (p=0.000 n=10+10)
name old export-bytes new export-bytes delta
Template 16.7kB ± 0% 16.7kB ± 0% ~ (all equal)
Unicode 6.52kB ± 0% 6.52kB ± 0% ~ (all equal)
GoTypes 29.2kB ± 0% 29.2kB ± 0% ~ (all equal)
Compiler 88.0kB ± 0% 88.0kB ± 0% ~ (all equal)
SSA 109kB ± 0% 109kB ± 0% ~ (all equal)
Flate 4.49kB ± 0% 4.49kB ± 0% ~ (all equal)
GoParser 8.10kB ± 0% 8.10kB ± 0% ~ (all equal)
Reflect 7.71kB ± 0% 7.71kB ± 0% ~ (all equal)
Tar 9.15kB ± 0% 9.15kB ± 0% ~ (all equal)
XML 12.3kB ± 0% 12.3kB ± 0% ~ (all equal)
name old text-bytes new text-bytes delta
HelloSize 676kB ± 0% 672kB ± 0% -0.59% (p=0.000 n=10+10)
CmdGoSize 7.26MB ± 0% 7.24MB ± 0% -0.18% (p=0.000 n=10+10)
name old data-bytes new data-bytes delta
HelloSize 10.2kB ± 0% 10.2kB ± 0% ~ (all equal)
CmdGoSize 248kB ± 0% 248kB ± 0% ~ (all equal)
name old bss-bytes new bss-bytes delta
HelloSize 125kB ± 0% 125kB ± 0% ~ (all equal)
CmdGoSize 145kB ± 0% 145kB ± 0% ~ (all equal)
name old exe-bytes new exe-bytes delta
HelloSize 1.46MB ± 0% 1.45MB ± 0% -0.31% (p=0.000 n=10+10)
CmdGoSize 14.7MB ± 0% 14.7MB ± 0% -0.17% (p=0.000 n=10+10)
Change-Id: Ic72b0c189dd542f391e1c9ab88a76e9148dc4285
Reviewed-on: https://go-review.googlesource.com/106495
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
|
||
|
Ben Shi
|
098ca846c7 |
cmd/compile: emit more compact 386 instructions
ADDL/SUBL/ANDL/ORL/XORL can have a memory operand as destination, and this CL optimize the compiler to emit such instructions on 386 for more compact binary. Here is test report: 1. The total size of pkg/linux_386/ and pkg/tool/linux_386/ decreases about 14KB. (pkg/linux_386/cmd/compile/ and pkg/tool/linux_386/compile are excluded) 2. The go1 benchmark shows little change, excluding ±2% noise. name old time/op new time/op delta BinaryTree17-4 3.34s ± 2% 3.38s ± 2% +1.27% (p=0.000 n=40+39) Fannkuch11-4 3.55s ± 1% 3.51s ± 1% -1.33% (p=0.000 n=40+40) FmtFprintfEmpty-4 46.3ns ± 3% 46.9ns ± 4% +1.41% (p=0.002 n=40+40) FmtFprintfString-4 80.8ns ± 3% 80.4ns ± 6% -0.54% (p=0.044 n=40+40) FmtFprintfInt-4 93.0ns ± 3% 92.2ns ± 4% -0.88% (p=0.007 n=39+40) FmtFprintfIntInt-4 144ns ± 5% 145ns ± 2% +0.78% (p=0.015 n=40+40) FmtFprintfPrefixedInt-4 184ns ± 2% 182ns ± 2% -1.06% (p=0.004 n=40+40) FmtFprintfFloat-4 415ns ± 4% 419ns ± 4% ~ (p=0.434 n=40+40) FmtManyArgs-4 615ns ± 3% 619ns ± 3% ~ (p=0.100 n=40+40) GobDecode-4 7.30ms ± 6% 7.36ms ± 6% ~ (p=0.074 n=40+40) GobEncode-4 7.10ms ± 6% 7.21ms ± 5% ~ (p=0.082 n=40+39) Gzip-4 364ms ± 3% 362ms ± 6% -0.71% (p=0.020 n=40+40) Gunzip-4 42.4ms ± 3% 42.2ms ± 3% ~ (p=0.303 n=40+40) HTTPClientServer-4 62.9µs ± 1% 62.9µs ± 1% ~ (p=0.768 n=38+39) JSONEncode-4 21.4ms ± 4% 21.5ms ± 5% ~ (p=0.210 n=40+40) JSONDecode-4 67.7ms ± 3% 67.9ms ± 4% ~ (p=0.713 n=40+40) Mandelbrot200-4 5.18ms ± 3% 5.21ms ± 3% +0.59% (p=0.021 n=40+40) GoParse-4 3.35ms ± 3% 3.34ms ± 2% ~ (p=0.996 n=40+40) RegexpMatchEasy0_32-4 98.5ns ± 5% 96.3ns ± 4% -2.15% (p=0.001 n=40+40) RegexpMatchEasy0_1K-4 851ns ± 4% 850ns ± 5% ~ (p=0.700 n=40+40) RegexpMatchEasy1_32-4 105ns ± 7% 107ns ± 4% +1.50% (p=0.017 n=40+40) RegexpMatchEasy1_1K-4 1.03µs ± 5% 1.03µs ± 4% ~ (p=0.992 n=40+40) RegexpMatchMedium_32-4 130ns ± 6% 128ns ± 4% -1.66% (p=0.012 n=40+40) RegexpMatchMedium_1K-4 44.0µs ± 5% 43.6µs ± 3% ~ (p=0.704 n=40+40) RegexpMatchHard_32-4 2.29µs ± 3% 2.23µs ± 4% -2.38% (p=0.000 n=40+40) RegexpMatchHard_1K-4 69.0µs ± 3% 68.1µs ± 3% -1.28% (p=0.003 n=40+40) Revcomp-4 1.85s ± 2% 1.87s ± 3% +1.11% (p=0.000 n=40+40) Template-4 69.8ms ± 3% 69.6ms ± 3% ~ (p=0.125 n=40+40) TimeParse-4 442ns ± 5% 440ns ± 3% ~ (p=0.585 n=40+40) TimeFormat-4 419ns ± 3% 420ns ± 3% ~ (p=0.824 n=40+40) [Geo mean] 67.3µs 67.2µs -0.11% name old speed new speed delta GobDecode-4 105MB/s ± 6% 104MB/s ± 6% ~ (p=0.074 n=40+40) GobEncode-4 108MB/s ± 7% 107MB/s ± 5% ~ (p=0.080 n=40+39) Gzip-4 53.3MB/s ± 3% 53.7MB/s ± 6% +0.73% (p=0.021 n=40+40) Gunzip-4 458MB/s ± 3% 460MB/s ± 3% ~ (p=0.301 n=40+40) JSONEncode-4 90.8MB/s ± 4% 90.3MB/s ± 4% ~ (p=0.213 n=40+40) JSONDecode-4 28.7MB/s ± 3% 28.6MB/s ± 4% ~ (p=0.679 n=40+40) GoParse-4 17.3MB/s ± 3% 17.3MB/s ± 2% ~ (p=1.000 n=40+40) RegexpMatchEasy0_32-4 325MB/s ± 5% 333MB/s ± 4% +2.44% (p=0.000 n=40+38) RegexpMatchEasy0_1K-4 1.20GB/s ± 4% 1.21GB/s ± 5% ~ (p=0.684 n=40+40) RegexpMatchEasy1_32-4 303MB/s ± 7% 298MB/s ± 4% -1.52% (p=0.022 n=40+40) RegexpMatchEasy1_1K-4 995MB/s ± 5% 996MB/s ± 4% ~ (p=0.996 n=40+40) RegexpMatchMedium_32-4 7.67MB/s ± 6% 7.80MB/s ± 4% +1.68% (p=0.011 n=40+40) RegexpMatchMedium_1K-4 23.3MB/s ± 5% 23.5MB/s ± 3% ~ (p=0.697 n=40+40) RegexpMatchHard_32-4 14.0MB/s ± 3% 14.3MB/s ± 4% +2.43% (p=0.000 n=40+40) RegexpMatchHard_1K-4 14.8MB/s ± 3% 15.0MB/s ± 3% +1.30% (p=0.003 n=40+40) Revcomp-4 137MB/s ± 2% 136MB/s ± 3% -1.10% (p=0.000 n=40+40) Template-4 27.8MB/s ± 3% 27.9MB/s ± 3% ~ (p=0.128 n=40+40) [Geo mean] 79.6MB/s 79.9MB/s +0.28% Change-Id: I02a3efc125dc81e18fc8495eb2bf1bba59ab8733 Reviewed-on: https://go-review.googlesource.com/110157 Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
||
|
Martin Möhrmann
|
b9a59d9f2e |
cmd/compile: optimize len([]rune(string))
Adds a new runtime function to count runes in a string. Modifies the compiler to detect the pattern len([]rune(string)) and replaces it with the new rune counting runtime function. RuneCount/lenruneslice/ASCII 27.8ns ± 2% 14.5ns ± 3% -47.70% (p=0.000 n=10+10) RuneCount/lenruneslice/Japanese 126ns ± 2% 60ns ± 2% -52.03% (p=0.000 n=10+10) RuneCount/lenruneslice/MixedLength 104ns ± 2% 50ns ± 1% -51.71% (p=0.000 n=10+9) Fixes #24923 Change-Id: Ie9c7e7391a4e2cca675c5cdcc1e5ce7d523948b9 Reviewed-on: https://go-review.googlesource.com/108985 Run-TryBot: Martin Möhrmann <moehrmann@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> |
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|
Martin Möhrmann
|
a8a60ac2a7 |
cmd/compile: optimize append(x, make([]T, y)...) slice extension
Changes the compiler to recognize the slice extension pattern append(x, make([]T, y)...) and replace it with growslice and an optional memclr to avoid an allocation for make([]T, y). Memclr is not called in case growslice already allocated a new cleared backing array when T contains pointers. amd64: name old time/op new time/op delta ExtendSlice/IntSlice 103ns ± 4% 57ns ± 4% -44.55% (p=0.000 n=18+18) ExtendSlice/PointerSlice 155ns ± 3% 77ns ± 3% -49.93% (p=0.000 n=20+20) ExtendSlice/NoGrow 50.2ns ± 3% 5.2ns ± 2% -89.67% (p=0.000 n=18+18) name old alloc/op new alloc/op delta ExtendSlice/IntSlice 64.0B ± 0% 32.0B ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/PointerSlice 64.0B ± 0% 32.0B ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/NoGrow 32.0B ± 0% 0.0B -100.00% (p=0.000 n=20+20) name old allocs/op new allocs/op delta ExtendSlice/IntSlice 2.00 ± 0% 1.00 ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/PointerSlice 2.00 ± 0% 1.00 ± 0% -50.00% (p=0.000 n=20+20) ExtendSlice/NoGrow 1.00 ± 0% 0.00 -100.00% (p=0.000 n=20+20) Fixes #21266 Change-Id: Idc3077665f63cbe89762b590c5967a864fd1c07f Reviewed-on: https://go-review.googlesource.com/109517 Run-TryBot: Martin Möhrmann <moehrmann@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> |
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|
Martin Möhrmann
|
500d79c410 |
cmd/compile: refactor memclrrange for arrays and slices
Rename memclrrange to signify that it does not handle all types of range clears. Simplify checks to detect the range clear idiom for arrays and slices. Add tests to verify the optimization for the slice range clear idiom is being applied by the compiler. Change-Id: I5c3b7c9a479699ebdb4c407fde692f30f377860c Reviewed-on: https://go-review.googlesource.com/110477 Run-TryBot: Martin Möhrmann <moehrmann@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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|
Ben Shi
|
aaf73c6d1e |
cmd/compile: optimize ARM64 with shifted register indexed load/store
ARM64 supports efficient instructions which combine shift, addition, load/store together. Such as "MOVD (R0)(R1<<3), R2" and "MOVWU R6, (R4)(R1<<2)". This CL optimizes the compiler to emit such efficient instuctions. And below is some test data. 1. binary size before/after binary size change pkg/linux_arm64 +80.1KB pkg/tool/linux_arm64 +121.9KB go -4.3KB gofmt -64KB 2. go1 benchmark There is big improvement for the test case Fannkuch11, and slight improvement for sme others, excluding noise. name old time/op new time/op delta BinaryTree17-4 43.9s ± 2% 44.0s ± 2% ~ (p=0.820 n=30+30) Fannkuch11-4 30.6s ± 2% 24.5s ± 3% -19.93% (p=0.000 n=25+30) FmtFprintfEmpty-4 500ns ± 0% 499ns ± 0% -0.11% (p=0.000 n=23+25) FmtFprintfString-4 1.03µs ± 0% 1.04µs ± 3% ~ (p=0.065 n=29+30) FmtFprintfInt-4 1.15µs ± 3% 1.15µs ± 4% -0.56% (p=0.000 n=30+30) FmtFprintfIntInt-4 1.80µs ± 5% 1.82µs ± 0% ~ (p=0.094 n=30+24) FmtFprintfPrefixedInt-4 2.17µs ± 5% 2.20µs ± 0% ~ (p=0.100 n=30+23) FmtFprintfFloat-4 3.08µs ± 3% 3.09µs ± 4% ~ (p=0.123 n=30+30) FmtManyArgs-4 7.41µs ± 4% 7.17µs ± 1% -3.26% (p=0.000 n=30+23) GobDecode-4 93.7ms ± 0% 94.7ms ± 4% ~ (p=0.685 n=24+30) GobEncode-4 78.7ms ± 7% 77.1ms ± 0% ~ (p=0.729 n=30+23) Gzip-4 4.01s ± 0% 3.97s ± 5% -1.11% (p=0.037 n=24+30) Gunzip-4 389ms ± 4% 384ms ± 0% ~ (p=0.155 n=30+23) HTTPClientServer-4 536µs ± 1% 537µs ± 1% ~ (p=0.236 n=30+30) JSONEncode-4 179ms ± 1% 182ms ± 6% ~ (p=0.763 n=24+30) JSONDecode-4 843ms ± 0% 839ms ± 6% -0.42% (p=0.003 n=25+30) Mandelbrot200-4 46.5ms ± 0% 46.5ms ± 0% +0.02% (p=0.000 n=26+26) GoParse-4 44.3ms ± 6% 43.3ms ± 0% ~ (p=0.067 n=30+27) RegexpMatchEasy0_32-4 1.07µs ± 7% 1.07µs ± 4% ~ (p=0.835 n=30+30) RegexpMatchEasy0_1K-4 5.51µs ± 0% 5.49µs ± 0% -0.35% (p=0.000 n=23+26) RegexpMatchEasy1_32-4 1.01µs ± 0% 1.02µs ± 4% +0.96% (p=0.014 n=24+30) RegexpMatchEasy1_1K-4 7.43µs ± 0% 7.18µs ± 0% -3.41% (p=0.000 n=23+24) RegexpMatchMedium_32-4 1.78µs ± 0% 1.81µs ± 4% +1.47% (p=0.012 n=23+30) RegexpMatchMedium_1K-4 547µs ± 1% 542µs ± 3% -0.90% (p=0.003 n=24+30) RegexpMatchHard_32-4 30.4µs ± 0% 29.7µs ± 0% -2.15% (p=0.000 n=19+23) RegexpMatchHard_1K-4 913µs ± 0% 915µs ± 6% +0.25% (p=0.012 n=24+30) Revcomp-4 6.32s ± 1% 6.42s ± 4% ~ (p=0.342 n=25+30) Template-4 868ms ± 6% 878ms ± 6% +1.15% (p=0.000 n=30+30) TimeParse-4 4.57µs ± 4% 4.59µs ± 3% +0.65% (p=0.010 n=29+30) TimeFormat-4 4.51µs ± 0% 4.50µs ± 0% -0.27% (p=0.000 n=27+24) [Geo mean] 695µs 689µs -0.92% name old speed new speed delta GobDecode-4 8.19MB/s ± 0% 8.12MB/s ± 4% ~ (p=0.680 n=24+30) GobEncode-4 9.76MB/s ± 7% 9.96MB/s ± 0% ~ (p=0.616 n=30+23) Gzip-4 4.84MB/s ± 0% 4.89MB/s ± 4% +1.16% (p=0.030 n=24+30) Gunzip-4 49.9MB/s ± 4% 50.6MB/s ± 0% ~ (p=0.162 n=30+23) JSONEncode-4 10.9MB/s ± 1% 10.7MB/s ± 6% ~ (p=0.575 n=24+30) JSONDecode-4 2.30MB/s ± 0% 2.32MB/s ± 5% +0.72% (p=0.003 n=22+30) GoParse-4 1.31MB/s ± 6% 1.34MB/s ± 0% +2.26% (p=0.002 n=30+27) RegexpMatchEasy0_32-4 30.0MB/s ± 6% 30.0MB/s ± 4% ~ (p=1.000 n=30+30) RegexpMatchEasy0_1K-4 186MB/s ± 0% 187MB/s ± 0% +0.35% (p=0.000 n=23+26) RegexpMatchEasy1_32-4 31.8MB/s ± 0% 31.5MB/s ± 4% -0.92% (p=0.012 n=25+30) RegexpMatchEasy1_1K-4 138MB/s ± 0% 143MB/s ± 0% +3.53% (p=0.000 n=23+24) RegexpMatchMedium_32-4 560kB/s ± 0% 553kB/s ± 4% -1.19% (p=0.005 n=23+30) RegexpMatchMedium_1K-4 1.87MB/s ± 0% 1.89MB/s ± 3% +1.04% (p=0.002 n=24+30) RegexpMatchHard_32-4 1.05MB/s ± 0% 1.08MB/s ± 0% +2.40% (p=0.000 n=19+23) RegexpMatchHard_1K-4 1.12MB/s ± 0% 1.12MB/s ± 5% +0.12% (p=0.006 n=25+30) Revcomp-4 40.2MB/s ± 1% 39.6MB/s ± 4% ~ (p=0.242 n=25+30) Template-4 2.24MB/s ± 6% 2.21MB/s ± 6% -1.15% (p=0.000 n=30+30) [Geo mean] 7.87MB/s 7.91MB/s +0.44% Change-Id: If374cb7abf83537aa0a176f73c0f736f7800db03 Reviewed-on: https://go-review.googlesource.com/108735 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
||
Milan Knezevic
|
2959128dc5 |
cmd/compile: add softfloat support to mips64{,le}
mips64 softfloat support is based on mips implementation and introduces
new enviroment variable GOMIPS64.
GOMIPS64 is a GOARCH=mips64{,le} specific option, for a choice between
hard-float and soft-float. Valid values are 'hardfloat' (default) and
'softfloat'. It is passed to the assembler as
'GOMIPS64_{hardfloat,softfloat}'.
Change-Id: I7f73078627f7cb37c588a38fb5c997fe09c56134
Reviewed-on: https://go-review.googlesource.com/108475
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
|
||
|
Josh Bleecher Snyder
|
d9a50a6531 |
cmd/compile: use prove pass to detect Ctz of non-zero values
On amd64, Ctz must include special handling of zeros.
But the prove pass has enough information to detect whether the input
is non-zero, allowing a more efficient lowering.
Introduce new CtzNonZero ops to capture and use this information.
Benchmark code:
func BenchmarkVisitBits(b *testing.B) {
b.Run("8", func(b *testing.B) {
for i := 0; i < b.N; i++ {
x := uint8(0xff)
for x != 0 {
sink = bits.TrailingZeros8(x)
x &= x - 1
}
}
})
// and similarly so for 16, 32, 64
}
name old time/op new time/op delta
VisitBits/8-8 7.27ns ± 4% 5.58ns ± 4% -23.35% (p=0.000 n=28+26)
VisitBits/16-8 14.7ns ± 7% 10.5ns ± 4% -28.43% (p=0.000 n=30+28)
VisitBits/32-8 27.6ns ± 8% 19.3ns ± 3% -30.14% (p=0.000 n=30+26)
VisitBits/64-8 44.0ns ±11% 38.0ns ± 5% -13.48% (p=0.000 n=30+30)
Fixes #25077
Change-Id: Ie6e5bd86baf39ee8a4ca7cadcf56d934e047f957
Reviewed-on: https://go-review.googlesource.com/109358
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
|
||
|
Carlos Eduardo Seo
|
ebb67d993a |
cmd/compile, cmd/internal/obj/ppc64: make math.Round an intrinsic on ppc64x
This change implements math.Round as an intrinsic on ppc64x so it can be done using a single instruction. benchmark old ns/op new ns/op delta BenchmarkRound-16 2.60 0.69 -73.46% Change-Id: I9408363e96201abdfc73ced7bcd5f0c29db006a8 Reviewed-on: https://go-review.googlesource.com/109395 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com> |
||
|
Josh Bleecher Snyder
|
c5f0104daf |
cmd/compile: use intrinsic for LeadingZeros8 on amd64
The previous change sped up the pure computation form of LeadingZeros8.
This places it somewhat close to the table lookup form.
Depending on something that varies from toolchain to toolchain
(alignment, perhaps?), the slowdown from ditching the table lookup
is either 20% or 5%.
This benchmark is the best case scenario for the table lookup:
It is in the L1 cache already.
I think we're close enough that we can switch to the computational version,
and trust that the memory effects and binary size savings will be worth it.
Code:
func f8(x uint8) { z = bits.LeadingZeros8(x) }
Before:
"".f8 STEXT nosplit size=34 args=0x8 locals=0x0
0x0000 00000 (x.go:7) TEXT "".f8(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:7) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:7) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:7) MOVBLZX "".x+8(SP), AX
0x0005 00005 (x.go:7) MOVBLZX AL, AX
0x0008 00008 (x.go:7) LEAQ math/bits.len8tab(SB), CX
0x000f 00015 (x.go:7) MOVBLZX (CX)(AX*1), AX
0x0013 00019 (x.go:7) ADDQ $-8, AX
0x0017 00023 (x.go:7) NEGQ AX
0x001a 00026 (x.go:7) MOVQ AX, "".z(SB)
0x0021 00033 (x.go:7) RET
After:
"".f8 STEXT nosplit size=30 args=0x8 locals=0x0
0x0000 00000 (x.go:7) TEXT "".f8(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:7) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:7) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:7) MOVBLZX "".x+8(SP), AX
0x0005 00005 (x.go:7) MOVBLZX AL, AX
0x0008 00008 (x.go:7) LEAL 1(AX)(AX*1), AX
0x000c 00012 (x.go:7) BSRL AX, AX
0x000f 00015 (x.go:7) ADDQ $-8, AX
0x0013 00019 (x.go:7) NEGQ AX
0x0016 00022 (x.go:7) MOVQ AX, "".z(SB)
0x001d 00029 (x.go:7) RET
Change-Id: Icc7db50a7820fb9a3da8a816d6b6940d7f8e193e
Reviewed-on: https://go-review.googlesource.com/108942
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
|
||
|
Josh Bleecher Snyder
|
1d321ada73 |
cmd/compile: optimize LeadingZeros(16|32) on amd64
Introduce Len8 and Len16 ops and provide optimized lowerings for them.
amd64 only for this CL, although it wouldn't surprise me
if other architectures also admit of optimized lowerings.
Also use and optimize the Len32 lowering, along the same lines.
Leave Len8 unused for the moment; a subsequent CL will enable it.
For 16 and 32 bits, this leads to a speed-up.
name old time/op new time/op delta
LeadingZeros16-8 1.42ns ± 5% 1.23ns ± 5% -13.42% (p=0.000 n=20+20)
LeadingZeros32-8 1.25ns ± 5% 1.03ns ± 5% -17.63% (p=0.000 n=20+16)
Code:
func f16(x uint16) { z = bits.LeadingZeros16(x) }
func f32(x uint32) { z = bits.LeadingZeros32(x) }
Before:
"".f16 STEXT nosplit size=38 args=0x8 locals=0x0
0x0000 00000 (x.go:8) TEXT "".f16(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:8) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:8) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:8) MOVWLZX "".x+8(SP), AX
0x0005 00005 (x.go:8) MOVWLZX AX, AX
0x0008 00008 (x.go:8) BSRQ AX, AX
0x000c 00012 (x.go:8) MOVQ $-1, CX
0x0013 00019 (x.go:8) CMOVQEQ CX, AX
0x0017 00023 (x.go:8) ADDQ $-15, AX
0x001b 00027 (x.go:8) NEGQ AX
0x001e 00030 (x.go:8) MOVQ AX, "".z(SB)
0x0025 00037 (x.go:8) RET
"".f32 STEXT nosplit size=34 args=0x8 locals=0x0
0x0000 00000 (x.go:9) TEXT "".f32(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:9) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:9) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:9) MOVL "".x+8(SP), AX
0x0004 00004 (x.go:9) BSRQ AX, AX
0x0008 00008 (x.go:9) MOVQ $-1, CX
0x000f 00015 (x.go:9) CMOVQEQ CX, AX
0x0013 00019 (x.go:9) ADDQ $-31, AX
0x0017 00023 (x.go:9) NEGQ AX
0x001a 00026 (x.go:9) MOVQ AX, "".z(SB)
0x0021 00033 (x.go:9) RET
After:
"".f16 STEXT nosplit size=30 args=0x8 locals=0x0
0x0000 00000 (x.go:8) TEXT "".f16(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:8) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:8) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:8) MOVWLZX "".x+8(SP), AX
0x0005 00005 (x.go:8) MOVWLZX AX, AX
0x0008 00008 (x.go:8) LEAL 1(AX)(AX*1), AX
0x000c 00012 (x.go:8) BSRL AX, AX
0x000f 00015 (x.go:8) ADDQ $-16, AX
0x0013 00019 (x.go:8) NEGQ AX
0x0016 00022 (x.go:8) MOVQ AX, "".z(SB)
0x001d 00029 (x.go:8) RET
"".f32 STEXT nosplit size=28 args=0x8 locals=0x0
0x0000 00000 (x.go:9) TEXT "".f32(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:9) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:9) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:9) MOVL "".x+8(SP), AX
0x0004 00004 (x.go:9) LEAQ 1(AX)(AX*1), AX
0x0009 00009 (x.go:9) BSRQ AX, AX
0x000d 00013 (x.go:9) ADDQ $-32, AX
0x0011 00017 (x.go:9) NEGQ AX
0x0014 00020 (x.go:9) MOVQ AX, "".z(SB)
0x001b 00027 (x.go:9) RET
Change-Id: I6c93c173752a7bfdeab8be30777ae05a736e1f4b
Reviewed-on: https://go-review.googlesource.com/108941
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
Reviewed-by: Keith Randall <khr@golang.org>
|
||
|
Josh Bleecher Snyder
|
54dbab5221 |
cmd/compile: optimize TrailingZeros(8|16) on amd64
Introduce Ctz8 and Ctz16 ops and provide optimized lowerings for them.
amd64 only for this CL, although it wouldn't surprise me
if other architectures also admit of optimized lowerings.
name old time/op new time/op delta
TrailingZeros8-8 1.33ns ± 6% 0.84ns ± 3% -36.90% (p=0.000 n=20+20)
TrailingZeros16-8 1.26ns ± 5% 0.84ns ± 5% -33.50% (p=0.000 n=20+18)
Code:
func f8(x uint8) { z = bits.TrailingZeros8(x) }
func f16(x uint16) { z = bits.TrailingZeros16(x) }
Before:
"".f8 STEXT nosplit size=34 args=0x8 locals=0x0
0x0000 00000 (x.go:7) TEXT "".f8(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:7) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:7) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:7) MOVBLZX "".x+8(SP), AX
0x0005 00005 (x.go:7) MOVBLZX AL, AX
0x0008 00008 (x.go:7) BTSQ $8, AX
0x000d 00013 (x.go:7) BSFQ AX, AX
0x0011 00017 (x.go:7) MOVL $64, CX
0x0016 00022 (x.go:7) CMOVQEQ CX, AX
0x001a 00026 (x.go:7) MOVQ AX, "".z(SB)
0x0021 00033 (x.go:7) RET
"".f16 STEXT nosplit size=34 args=0x8 locals=0x0
0x0000 00000 (x.go:8) TEXT "".f16(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:8) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:8) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:8) MOVWLZX "".x+8(SP), AX
0x0005 00005 (x.go:8) MOVWLZX AX, AX
0x0008 00008 (x.go:8) BTSQ $16, AX
0x000d 00013 (x.go:8) BSFQ AX, AX
0x0011 00017 (x.go:8) MOVL $64, CX
0x0016 00022 (x.go:8) CMOVQEQ CX, AX
0x001a 00026 (x.go:8) MOVQ AX, "".z(SB)
0x0021 00033 (x.go:8) RET
After:
"".f8 STEXT nosplit size=20 args=0x8 locals=0x0
0x0000 00000 (x.go:7) TEXT "".f8(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:7) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:7) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:7) MOVBLZX "".x+8(SP), AX
0x0005 00005 (x.go:7) BTSL $8, AX
0x0009 00009 (x.go:7) BSFL AX, AX
0x000c 00012 (x.go:7) MOVQ AX, "".z(SB)
0x0013 00019 (x.go:7) RET
"".f16 STEXT nosplit size=20 args=0x8 locals=0x0
0x0000 00000 (x.go:8) TEXT "".f16(SB), NOSPLIT, $0-8
0x0000 00000 (x.go:8) FUNCDATA $0, gclocals·2a5305abe05176240e61b8620e19a815(SB)
0x0000 00000 (x.go:8) FUNCDATA $1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
0x0000 00000 (x.go:8) MOVWLZX "".x+8(SP), AX
0x0005 00005 (x.go:8) BTSL $16, AX
0x0009 00009 (x.go:8) BSFL AX, AX
0x000c 00012 (x.go:8) MOVQ AX, "".z(SB)
0x0013 00019 (x.go:8) RET
Change-Id: I0551e357348de2b724737d569afd6ac9f5c3aa11
Reviewed-on: https://go-review.googlesource.com/108940
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
Reviewed-by: Keith Randall <khr@golang.org>
|
||
|
Josh Bleecher Snyder
|
d292f77e95 |
cmd/compile: rewrite 2*x+c into LEAx1 on amd64
Rewrite x<<1+c into x+x+c, which can be expressed as a single LEAQ/LEAL. Bit of a special case, but the single-instruction LEA is both shorter and faster than SHL then ADD. Triggers 293 times during make.bash. Change-Id: I3f09c8e9a8f3859d1eeed336f095fc3ada79c2c1 Reviewed-on: https://go-review.googlesource.com/108938 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Ben Shi
|
34f5f8a580 |
cmd/compile: optimize ARM64 with register indexed load/store
ARM64 supports load/store instructions with a memory operand that the address is calculated by base register + index register. In this CL, 1. Some rules are added to the compile's ARM64 backend to emit such efficient instructions. 2. A wrong rule of load combination is fixed. The go1 benchmark does show improvement. name old time/op new time/op delta BinaryTree17-4 44.5s ± 2% 44.1s ± 1% -0.81% (p=0.000 n=28+29) Fannkuch11-4 32.7s ± 3% 30.5s ± 0% -6.79% (p=0.000 n=30+26) FmtFprintfEmpty-4 499ns ± 0% 506ns ± 5% +1.39% (p=0.003 n=25+30) FmtFprintfString-4 1.07µs ± 0% 1.04µs ± 4% -3.17% (p=0.000 n=23+30) FmtFprintfInt-4 1.15µs ± 4% 1.13µs ± 0% -1.55% (p=0.000 n=30+23) FmtFprintfIntInt-4 1.77µs ± 4% 1.74µs ± 0% -1.71% (p=0.000 n=30+24) FmtFprintfPrefixedInt-4 2.37µs ± 5% 2.12µs ± 0% -10.56% (p=0.000 n=30+23) FmtFprintfFloat-4 3.03µs ± 1% 3.03µs ± 4% -0.13% (p=0.003 n=25+30) FmtManyArgs-4 7.38µs ± 1% 7.43µs ± 4% +0.59% (p=0.003 n=25+30) GobDecode-4 101ms ± 6% 95ms ± 5% -5.55% (p=0.000 n=30+30) GobEncode-4 78.0ms ± 4% 78.8ms ± 6% +1.05% (p=0.000 n=30+30) Gzip-4 4.25s ± 0% 4.27s ± 4% +0.45% (p=0.003 n=24+30) Gunzip-4 428ms ± 1% 420ms ± 0% -1.88% (p=0.000 n=23+23) HTTPClientServer-4 549µs ± 1% 541µs ± 1% -1.56% (p=0.000 n=29+29) JSONEncode-4 194ms ± 0% 188ms ± 4% ~ (p=0.417 n=23+30) JSONDecode-4 890ms ± 5% 831ms ± 0% -6.55% (p=0.000 n=30+23) Mandelbrot200-4 47.3ms ± 2% 46.5ms ± 0% ~ (p=0.980 n=30+26) GoParse-4 43.1ms ± 6% 43.8ms ± 6% +1.65% (p=0.000 n=30+30) RegexpMatchEasy0_32-4 1.06µs ± 0% 1.07µs ± 3% ~ (p=0.092 n=23+30) RegexpMatchEasy0_1K-4 5.53µs ± 0% 5.51µs ± 0% -0.24% (p=0.000 n=25+25) RegexpMatchEasy1_32-4 1.02µs ± 3% 1.01µs ± 0% -1.27% (p=0.000 n=30+24) RegexpMatchEasy1_1K-4 7.26µs ± 0% 7.33µs ± 0% +0.95% (p=0.000 n=23+26) RegexpMatchMedium_32-4 1.84µs ± 7% 1.79µs ± 1% ~ (p=0.333 n=30+23) RegexpMatchMedium_1K-4 553µs ± 0% 547µs ± 0% -1.14% (p=0.000 n=24+22) RegexpMatchHard_32-4 30.8µs ± 1% 30.3µs ± 0% -1.40% (p=0.000 n=24+24) RegexpMatchHard_1K-4 928µs ± 0% 929µs ± 5% +0.12% (p=0.013 n=23+30) Revcomp-4 8.13s ± 4% 6.32s ± 1% -22.23% (p=0.000 n=30+23) Template-4 899ms ± 6% 854ms ± 1% -5.01% (p=0.000 n=30+24) TimeParse-4 4.66µs ± 4% 4.59µs ± 1% -1.57% (p=0.000 n=30+23) TimeFormat-4 4.58µs ± 0% 4.61µs ± 0% +0.57% (p=0.000 n=26+24) [Geo mean] 717µs 698µs -2.55% name old speed new speed delta GobDecode-4 7.63MB/s ± 6% 8.08MB/s ± 5% +5.88% (p=0.000 n=30+30) GobEncode-4 9.85MB/s ± 4% 9.75MB/s ± 6% -1.04% (p=0.000 n=30+30) Gzip-4 4.56MB/s ± 0% 4.55MB/s ± 4% -0.36% (p=0.003 n=24+30) Gunzip-4 45.3MB/s ± 1% 46.2MB/s ± 0% +1.92% (p=0.000 n=23+23) JSONEncode-4 10.0MB/s ± 0% 10.4MB/s ± 4% ~ (p=0.403 n=23+30) JSONDecode-4 2.18MB/s ± 5% 2.33MB/s ± 0% +6.91% (p=0.000 n=30+23) GoParse-4 1.34MB/s ± 5% 1.32MB/s ± 5% -1.66% (p=0.000 n=30+30) RegexpMatchEasy0_32-4 30.2MB/s ± 0% 29.8MB/s ± 3% ~ (p=0.099 n=23+30) RegexpMatchEasy0_1K-4 185MB/s ± 0% 186MB/s ± 0% +0.24% (p=0.000 n=25+25) RegexpMatchEasy1_32-4 31.4MB/s ± 3% 31.8MB/s ± 0% +1.24% (p=0.000 n=30+24) RegexpMatchEasy1_1K-4 141MB/s ± 0% 140MB/s ± 0% -0.94% (p=0.000 n=23+26) RegexpMatchMedium_32-4 541kB/s ± 6% 560kB/s ± 0% +3.45% (p=0.000 n=30+23) RegexpMatchMedium_1K-4 1.85MB/s ± 0% 1.87MB/s ± 0% +1.08% (p=0.000 n=24+23) RegexpMatchHard_32-4 1.04MB/s ± 1% 1.06MB/s ± 1% +1.48% (p=0.000 n=24+24) RegexpMatchHard_1K-4 1.10MB/s ± 0% 1.10MB/s ± 5% +0.15% (p=0.004 n=23+30) Revcomp-4 31.3MB/s ± 4% 40.2MB/s ± 1% +28.52% (p=0.000 n=30+23) Template-4 2.16MB/s ± 6% 2.27MB/s ± 1% +5.18% (p=0.000 n=30+24) [Geo mean] 7.57MB/s 7.79MB/s +2.98% fixes #24907 Change-Id: I94afd0e3f53d62a1cf5e452f3dd6daf61be21785 Reviewed-on: https://go-review.googlesource.com/107376 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
||
|
Michael Munday
|
58cdecb9c8 |
cmd/compile: generate constants for NeqPtr, EqPtr and IsNonNil ops
If both inputs are constant offsets from the same pointer then we can evaluate NeqPtr and EqPtr at compile time. Triggers a few times during all.bash. Removes a conditional branch in the following code: copy(x[1:], x[:]) This branch was recently added as an optimization in CL 94596. We now skip the memmove if the pointers are equal. However, in the above code we know at compile time that they are never equal. Also, when the offset is variable, check if the offset is zero rather than if the pointers are equal. For example: copy(x[a:], x[:]) This would now skip the copy if a == 0, rather than if x + a == x. Finally I've also added a rule to make IsNonNil true for pointers to values on the stack. The nil check elimination pass will catch these anyway, but eliminating them here might eliminate branches earlier. Change-Id: If72f436fef0a96ad0f4e296d3a1f8b6c3e712085 Reviewed-on: https://go-review.googlesource.com/106635 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Ben Shi
|
cd65bbc01b |
cmd/compile/internal/ssa: optimize 386's subtraction
The SUBL instruction can take a memory operand, and this CL implements this optimization. The go1 benchmark shows a little improvement. name old time/op new time/op delta BinaryTree17-4 3.27s ± 2% 3.29s ± 3% ~ (p=0.322 n=37+40) Fannkuch11-4 3.49s ± 0% 3.53s ± 1% +1.21% (p=0.000 n=31+40) FmtFprintfEmpty-4 46.2ns ± 3% 46.3ns ± 2% ~ (p=0.351 n=40+28) FmtFprintfString-4 82.0ns ± 3% 81.5ns ± 2% -0.69% (p=0.002 n=40+30) FmtFprintfInt-4 94.6ns ± 3% 94.6ns ± 6% ~ (p=0.913 n=39+37) FmtFprintfIntInt-4 147ns ± 3% 150ns ± 2% +1.72% (p=0.000 n=40+25) FmtFprintfPrefixedInt-4 186ns ± 3% 186ns ± 0% -0.33% (p=0.006 n=40+25) FmtFprintfFloat-4 388ns ± 4% 388ns ± 4% ~ (p=0.162 n=40+40) FmtManyArgs-4 612ns ± 3% 616ns ± 4% ~ (p=0.223 n=40+40) GobDecode-4 7.35ms ± 5% 7.42ms ± 5% ~ (p=0.095 n=40+40) GobEncode-4 7.21ms ± 8% 7.23ms ± 4% ~ (p=0.294 n=40+40) Gzip-4 360ms ± 4% 359ms ± 4% ~ (p=0.097 n=40+40) Gunzip-4 46.1ms ± 3% 45.6ms ± 3% -1.20% (p=0.000 n=40+40) HTTPClientServer-4 64.0µs ± 2% 64.1µs ± 2% ~ (p=0.648 n=39+40) JSONEncode-4 21.9ms ± 4% 22.1ms ± 5% ~ (p=0.086 n=40+40) JSONDecode-4 67.9ms ± 4% 66.7ms ± 4% -1.63% (p=0.000 n=40+40) Mandelbrot200-4 5.19ms ± 3% 5.17ms ± 3% ~ (p=0.881 n=40+40) GoParse-4 3.34ms ± 3% 3.28ms ± 2% -1.78% (p=0.000 n=40+40) RegexpMatchEasy0_32-4 101ns ± 5% 99ns ± 3% -2.40% (p=0.000 n=40+40) RegexpMatchEasy0_1K-4 851ns ± 1% 848ns ± 3% -0.36% (p=0.004 n=33+40) RegexpMatchEasy1_32-4 109ns ± 5% 105ns ± 3% -3.53% (p=0.000 n=39+40) RegexpMatchEasy1_1K-4 1.03µs ± 4% 1.03µs ± 3% ~ (p=0.638 n=40+38) RegexpMatchMedium_32-4 131ns ± 5% 127ns ± 4% -3.36% (p=0.000 n=38+40) RegexpMatchMedium_1K-4 43.4µs ± 4% 43.2µs ± 3% -0.46% (p=0.008 n=40+40) RegexpMatchHard_32-4 2.21µs ± 4% 2.23µs ± 1% +0.77% (p=0.014 n=40+28) RegexpMatchHard_1K-4 67.6µs ± 4% 67.7µs ± 3% +0.11% (p=0.016 n=40+40) Revcomp-4 1.86s ± 3% 1.77s ± 2% -4.81% (p=0.000 n=40+40) Template-4 71.7ms ± 3% 71.6ms ± 4% ~ (p=0.200 n=40+40) TimeParse-4 436ns ± 4% 433ns ± 3% ~ (p=0.358 n=40+40) TimeFormat-4 413ns ± 4% 412ns ± 3% ~ (p=0.415 n=40+40) [Geo mean] 63.9µs 63.6µs -0.49% name old speed new speed delta GobDecode-4 105MB/s ± 5% 104MB/s ± 5% ~ (p=0.096 n=40+40) GobEncode-4 106MB/s ± 7% 106MB/s ± 3% ~ (p=0.385 n=39+40) Gzip-4 54.0MB/s ± 4% 54.0MB/s ± 4% ~ (p=0.100 n=40+40) Gunzip-4 421MB/s ± 3% 426MB/s ± 3% +1.21% (p=0.000 n=40+40) JSONEncode-4 88.5MB/s ± 5% 88.0MB/s ± 5% ~ (p=0.083 n=40+40) JSONDecode-4 28.6MB/s ± 4% 29.1MB/s ± 4% +1.65% (p=0.000 n=40+40) GoParse-4 17.3MB/s ± 3% 17.7MB/s ± 2% +1.82% (p=0.000 n=40+40) RegexpMatchEasy0_32-4 316MB/s ± 5% 323MB/s ± 4% +2.44% (p=0.000 n=40+40) RegexpMatchEasy0_1K-4 1.20GB/s ± 1% 1.21GB/s ± 3% +0.40% (p=0.004 n=33+40) RegexpMatchEasy1_32-4 291MB/s ± 7% 302MB/s ± 4% +3.82% (p=0.000 n=40+40) RegexpMatchEasy1_1K-4 993MB/s ± 4% 990MB/s ± 3% ~ (p=0.623 n=40+38) RegexpMatchMedium_32-4 7.61MB/s ± 5% 7.87MB/s ± 4% +3.36% (p=0.000 n=38+40) RegexpMatchMedium_1K-4 23.6MB/s ± 4% 23.7MB/s ± 4% +0.46% (p=0.007 n=40+40) RegexpMatchHard_32-4 14.5MB/s ± 4% 14.3MB/s ± 1% -0.79% (p=0.017 n=40+28) RegexpMatchHard_1K-4 15.1MB/s ± 4% 15.1MB/s ± 3% -0.11% (p=0.015 n=40+40) Revcomp-4 137MB/s ± 3% 144MB/s ± 3% +5.06% (p=0.000 n=40+40) Template-4 27.1MB/s ± 3% 27.1MB/s ± 4% ~ (p=0.211 n=40+40) [Geo mean] 78.9MB/s 79.7MB/s +1.01% Change-Id: I638fa4fef85833e8605919d693f9570cc3cf7334 Reviewed-on: https://go-review.googlesource.com/107275 Run-TryBot: Keith Randall <khr@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Giovanni Bajo
|
e7b1d0a9cf |
test: add missing copyright header
Change-Id: Ia64535492515f725fe3c4b59ea300363a0c4ce10 Reviewed-on: https://go-review.googlesource.com/107136 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
||
|
Giovanni Bajo
|
284ba47b49 |
test: run codegen tests on all supported architecture variants
This CL makes the codegen testsuite automatically test all architecture variants for architecture specified in tests. For instance, if a test file specifies a "arm" test, it will be automatically run on all GOARM variants (5,6,7), to increase the coverage. The CL also introduces a syntax to specify only a specific variant (eg: "arm/7") in case the test makes sense only there. The same syntax also allows to specify the operating system in case it matters (eg: "plan9/386/sse2"). Fixes #24658 Change-Id: I2eba8b918f51bb6a77a8431a309f8b71af07ea22 Reviewed-on: https://go-review.googlesource.com/107315 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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|
Giovanni Bajo
|
01aa1d7dbe |
test: migrate plan9 tests to codegen
And remove it from asmtest. Next CL will remove the whole asmtest infrastructure. Change-Id: I5851bf7c617456d62a3c6cffacf70252df7b056b Reviewed-on: https://go-review.googlesource.com/107335 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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|
Alberto Donizetti
|
467eca6076 |
test/codegen: port last stack and memcombining tests
And delete them from asm_test. Also delete an arm64 cmov test has been already ported to the new test harness. Change-Id: I4458721e1f512bc9ecbbe1c22a2c9c7109ad68fe Reviewed-on: https://go-review.googlesource.com/106335 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Giovanni Bajo <rasky@develer.com> |
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|
Alberto Donizetti
|
188e2bf897 |
test/codegen: port arm64 BIC/EON/ORN and masking tests
And delete them from asm_test. Change-Id: I24f421b87e8cb4770c887a6dfd58eacd0088947d Reviewed-on: https://go-review.googlesource.com/106056 Reviewed-by: Keith Randall <khr@golang.org> |
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|
Alberto Donizetti
|
d5ff631e6b |
test/codegen: port last remaining misc bit/arithmetic tests
And delete them from asm_test. Change-Id: I9a75efe9858ef9d7ac86065f860c2ae3f25b0941 Reviewed-on: https://go-review.googlesource.com/105597 Reviewed-by: Daniel Martí <mvdan@mvdan.cc> |
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|
Michael Munday
|
b65122f99a |
cmd/compile: optimize comparisons using load merging where available
Multi-byte comparison operations were used on amd64, arm64, i386 and s390x for comparisons with constant arrays, but only amd64 and i386 for comparisons with string constants. This CL combines the check for platform capability, since they have the same requirements, and also enables both on ppc64le which also supports load merging. Note that these optimizations currently use little endian byte order which results in byte reversal instructions on s390x. This should be fixed at some point. Change-Id: Ie612d13359b50c77f4d7c6e73fea4a59fa11f322 Reviewed-on: https://go-review.googlesource.com/102558 Run-TryBot: Michael Munday <mike.munday@ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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|
Alberto Donizetti
|
54c3f56ee0 |
test/codegen: port various mem-combining tests
And delete them from asm_test. Change-Id: I0e33d58274951ab5acb67b0117b60ef617ea887a Reviewed-on: https://go-review.googlesource.com/105735 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Daniel Martí <mvdan@mvdan.cc> |
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Alberto Donizetti
|
3e31eb6b84 |
test/codegen: port arm64 slice zeroing tests
Finish porting arm64 slice zeroing codegen tests; delete them from asm_test. Change-Id: Id2532df8ba1c340fa662a6b5238daa3de30548be Reviewed-on: https://go-review.googlesource.com/105136 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Giovanni Bajo <rasky@develer.com> |
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Alberto Donizetti
|
f2abca90a2 |
test/codegen: port arm64 byte slice zeroing tests
And delete them from asm_test. Change-Id: Id533130470da9176a401cb94972f626f43a62148 Reviewed-on: https://go-review.googlesource.com/103656 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Giovanni Bajo <rasky@develer.com> |
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Alberto Donizetti
|
3b0b8bcd68 |
test/codegen: port stack-related tests to codegen
And delete them from asm_test. Change-Id: Idfe1249052d82d15b9c30b292c78656a0bf7b48d Reviewed-on: https://go-review.googlesource.com/103315 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Alberto Donizetti
|
56eaf574a1 |
test/codegen: match 387 ops too for GOARCH=386
Change-Id: I99407e27e340689009af798989b33cef7cb92070 Reviewed-on: https://go-review.googlesource.com/103376 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Alberto Donizetti
|
a27cd4fd31 |
test/codegen: port tbz/tbnz arm64 tests
And delete them from asm_test. Change-Id: I34fcf85ae8ce09cd146fe4ce6a0ae7616bd97e2d Reviewed-on: https://go-review.googlesource.com/102296 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Giovanni Bajo <rasky@develer.com> |
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Giovanni Bajo
|
79112707bb |
cmd/compile: add patterns for bit set/clear/complement on amd64
This patch completes implementation of BT(Q|L), and adds support
for BT(S|R|C)(Q|L).
Example of code changes from time.(*Time).addSec:
if t.wall&hasMonotonic != 0 {
0x1073465 488b08 MOVQ 0(AX), CX
0x1073468 4889ca MOVQ CX, DX
0x107346b 48c1e93f SHRQ $0x3f, CX
0x107346f 48c1e13f SHLQ $0x3f, CX
0x1073473 48f7c1ffffffff TESTQ $-0x1, CX
0x107347a 746b JE 0x10734e7
if t.wall&hasMonotonic != 0 {
0x1073435 488b08 MOVQ 0(AX), CX
0x1073438 480fbae13f BTQ $0x3f, CX
0x107343d 7363 JAE 0x10734a2
Another example:
t.wall = t.wall&nsecMask | uint64(dsec)<<nsecShift | hasMonotonic
0x10734c8 4881e1ffffff3f ANDQ $0x3fffffff, CX
0x10734cf 48c1e61e SHLQ $0x1e, SI
0x10734d3 4809ce ORQ CX, SI
0x10734d6 48b90000000000000080 MOVQ $0x8000000000000000, CX
0x10734e0 4809f1 ORQ SI, CX
0x10734e3 488908 MOVQ CX, 0(AX)
t.wall = t.wall&nsecMask | uint64(dsec)<<nsecShift | hasMonotonic
0x107348b 4881e2ffffff3f ANDQ $0x3fffffff, DX
0x1073492 48c1e61e SHLQ $0x1e, SI
0x1073496 4809f2 ORQ SI, DX
0x1073499 480fbaea3f BTSQ $0x3f, DX
0x107349e 488910 MOVQ DX, 0(AX)
Go1 benchmarks seem unaffected, and I would be surprised
otherwise:
name old time/op new time/op delta
BinaryTree17-4 2.64s ± 4% 2.56s ± 9% -2.92% (p=0.008 n=9+9)
Fannkuch11-4 2.90s ± 1% 2.95s ± 3% +1.76% (p=0.010 n=10+9)
FmtFprintfEmpty-4 35.3ns ± 1% 34.5ns ± 2% -2.34% (p=0.004 n=9+8)
FmtFprintfString-4 57.0ns ± 1% 58.4ns ± 5% +2.52% (p=0.029 n=9+10)
FmtFprintfInt-4 59.8ns ± 3% 59.8ns ± 6% ~ (p=0.565 n=10+10)
FmtFprintfIntInt-4 93.9ns ± 3% 91.2ns ± 5% -2.94% (p=0.014 n=10+9)
FmtFprintfPrefixedInt-4 107ns ± 6% 104ns ± 6% ~ (p=0.099 n=10+10)
FmtFprintfFloat-4 187ns ± 3% 188ns ± 3% ~ (p=0.505 n=10+9)
FmtManyArgs-4 410ns ± 1% 415ns ± 6% ~ (p=0.649 n=8+10)
GobDecode-4 5.30ms ± 3% 5.27ms ± 3% ~ (p=0.436 n=10+10)
GobEncode-4 4.62ms ± 5% 4.47ms ± 2% -3.24% (p=0.001 n=9+10)
Gzip-4 197ms ± 4% 193ms ± 3% ~ (p=0.123 n=10+10)
Gunzip-4 30.4ms ± 3% 30.1ms ± 3% ~ (p=0.481 n=10+10)
HTTPClientServer-4 76.3µs ± 1% 76.0µs ± 1% ~ (p=0.236 n=8+9)
JSONEncode-4 10.5ms ± 9% 10.3ms ± 3% ~ (p=0.280 n=10+10)
JSONDecode-4 42.3ms ±10% 41.3ms ± 2% ~ (p=0.053 n=9+10)
Mandelbrot200-4 3.80ms ± 2% 3.72ms ± 2% -2.15% (p=0.001 n=9+10)
GoParse-4 2.88ms ±10% 2.81ms ± 2% ~ (p=0.247 n=10+10)
RegexpMatchEasy0_32-4 69.5ns ± 4% 68.6ns ± 2% ~ (p=0.171 n=10+10)
RegexpMatchEasy0_1K-4 165ns ± 3% 162ns ± 3% ~ (p=0.137 n=10+10)
RegexpMatchEasy1_32-4 65.7ns ± 6% 64.4ns ± 2% -2.02% (p=0.037 n=10+10)
RegexpMatchEasy1_1K-4 278ns ± 2% 279ns ± 3% ~ (p=0.991 n=8+9)
RegexpMatchMedium_32-4 99.3ns ± 3% 98.5ns ± 4% ~ (p=0.457 n=10+9)
RegexpMatchMedium_1K-4 30.1µs ± 1% 30.4µs ± 2% ~ (p=0.173 n=8+10)
RegexpMatchHard_32-4 1.40µs ± 2% 1.41µs ± 4% ~ (p=0.565 n=10+10)
RegexpMatchHard_1K-4 42.5µs ± 1% 41.5µs ± 3% -2.13% (p=0.002 n=8+9)
Revcomp-4 332ms ± 4% 328ms ± 5% ~ (p=0.720 n=9+10)
Template-4 48.3ms ± 2% 49.6ms ± 3% +2.56% (p=0.002 n=8+10)
TimeParse-4 252ns ± 2% 249ns ± 3% ~ (p=0.116 n=9+10)
TimeFormat-4 262ns ± 4% 252ns ± 3% -4.01% (p=0.000 n=9+10)
name old speed new speed delta
GobDecode-4 145MB/s ± 3% 146MB/s ± 3% ~ (p=0.436 n=10+10)
GobEncode-4 166MB/s ± 5% 172MB/s ± 2% +3.28% (p=0.001 n=9+10)
Gzip-4 98.6MB/s ± 4% 100.4MB/s ± 3% ~ (p=0.123 n=10+10)
Gunzip-4 639MB/s ± 3% 645MB/s ± 3% ~ (p=0.481 n=10+10)
JSONEncode-4 185MB/s ± 8% 189MB/s ± 3% ~ (p=0.280 n=10+10)
JSONDecode-4 46.0MB/s ± 9% 47.0MB/s ± 2% +2.21% (p=0.046 n=9+10)
GoParse-4 20.1MB/s ± 9% 20.6MB/s ± 2% ~ (p=0.239 n=10+10)
RegexpMatchEasy0_32-4 460MB/s ± 4% 467MB/s ± 2% ~ (p=0.165 n=10+10)
RegexpMatchEasy0_1K-4 6.19GB/s ± 3% 6.28GB/s ± 3% ~ (p=0.165 n=10+10)
RegexpMatchEasy1_32-4 487MB/s ± 5% 497MB/s ± 2% +2.00% (p=0.043 n=10+10)
RegexpMatchEasy1_1K-4 3.67GB/s ± 2% 3.67GB/s ± 3% ~ (p=0.963 n=8+9)
RegexpMatchMedium_32-4 10.1MB/s ± 3% 10.1MB/s ± 4% ~ (p=0.435 n=10+9)
RegexpMatchMedium_1K-4 34.0MB/s ± 1% 33.7MB/s ± 2% ~ (p=0.173 n=8+10)
RegexpMatchHard_32-4 22.9MB/s ± 2% 22.7MB/s ± 4% ~ (p=0.565 n=10+10)
RegexpMatchHard_1K-4 24.0MB/s ± 3% 24.7MB/s ± 3% +2.64% (p=0.001 n=9+9)
Revcomp-4 766MB/s ± 4% 775MB/s ± 5% ~ (p=0.720 n=9+10)
Template-4 40.2MB/s ± 2% 39.2MB/s ± 3% -2.47% (p=0.002 n=8+10)
The rules match ~1800 times during all.bash.
Fixes #18943
Change-Id: I64be1ada34e89c486dfd935bf429b35652117ed4
Reviewed-on: https://go-review.googlesource.com/94766
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
|
||
|
Alberto Donizetti
|
fc6280d4b0 |
test/codegen: port direct comparisons with memory tests
And remove them from asm_test. Change-Id: I1ca29b40546d6de06f20bfd550ed8ff87f495454 Reviewed-on: https://go-review.googlesource.com/102115 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Alberto Donizetti
|
be371edd67 |
test/codegen: port comparisons tests to codegen
And delete them from asm_test. Change-Id: I64c512bfef3b3da6db5c5d29277675dade28b8ab Reviewed-on: https://go-review.googlesource.com/101595 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Giovanni Bajo <rasky@develer.com> |
||
Vladimir Kuzmin
|
c12b185a6e |
cmd/compile: avoid mapaccess at m[k]=append(m[k]..
Currently rvalue m[k] is transformed during walk into:
tmp1 := *mapaccess(m, k)
tmp2 := append(tmp1, ...)
*mapassign(m, k) = tmp2
However, this is suboptimal, as we could instead produce just:
tmp := mapassign(m, k)
*tmp := append(*tmp, ...)
Optimization is possible only if during Order it may tell that m[k] is
exactly the same at left and right part of assignment. It doesn't work:
1) m[f(k)] = append(m[f(k)], ...)
2) sink, m[k] = sink, append(m[k]...)
3) m[k] = append(..., m[k],...)
Benchmark:
name old time/op new time/op delta
MapAppendAssign/Int32/256-8 33.5ns ± 3% 22.4ns ±10% -33.24% (p=0.000 n=16+18)
MapAppendAssign/Int32/65536-8 68.2ns ± 6% 48.5ns ±29% -28.90% (p=0.000 n=20+20)
MapAppendAssign/Int64/256-8 34.3ns ± 4% 23.3ns ± 5% -32.23% (p=0.000 n=17+18)
MapAppendAssign/Int64/65536-8 65.9ns ± 7% 61.2ns ±19% -7.06% (p=0.002 n=18+20)
MapAppendAssign/Str/256-8 116ns ±12% 79ns ±16% -31.70% (p=0.000 n=20+19)
MapAppendAssign/Str/65536-8 134ns ±15% 111ns ±45% -16.95% (p=0.000 n=19+20)
name old alloc/op new alloc/op delta
MapAppendAssign/Int32/256-8 47.0B ± 0% 46.0B ± 0% -2.13% (p=0.000 n=19+18)
MapAppendAssign/Int32/65536-8 27.0B ± 0% 20.7B ±30% -23.33% (p=0.000 n=20+20)
MapAppendAssign/Int64/256-8 47.0B ± 0% 46.0B ± 0% -2.13% (p=0.000 n=20+17)
MapAppendAssign/Int64/65536-8 27.0B ± 0% 27.0B ± 0% ~ (all equal)
MapAppendAssign/Str/256-8 94.0B ± 0% 78.0B ± 0% -17.02% (p=0.000 n=20+16)
MapAppendAssign/Str/65536-8 54.0B ± 0% 54.0B ± 0% ~ (all equal)
Fixes #24364
Updates #5147
Change-Id: Id257d052b75b9a445b4885dc571bf06ce6f6b409
Reviewed-on: https://go-review.googlesource.com/100838
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
|
||
|
Alberto Donizetti
|
5a4e09837c |
test/codegen: port maps test to codegen
And delete them from asm_test. Change-Id: I3cf0934706a640136cb0f646509174f8c1bf3363 Reviewed-on: https://go-review.googlesource.com/101395 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Giovanni Bajo <rasky@develer.com> |
||
|
Alberto Donizetti
|
b61b1d2c57 |
test/codegen: port structs test to codegen
And delete them from asm_test. Change-Id: Ia286239a3d8f3915f2ca25dbcb39f3354a4f8aea Reviewed-on: https://go-review.googlesource.com/101138 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
||
|
Alberto Donizetti
|
cceee685be |
test/codegen: port floats tests to codegen
And delete them from asm_test. Change-Id: Ibdaca3496eefc73c731b511ddb9636a1f3dff68c Reviewed-on: https://go-review.googlesource.com/100915 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Giovanni Bajo
|
a35ec9a59e |
cmd/compile: implement CMOV on amd64
This builds upon the branchelim pass, activating it for amd64 and lowering CondSelect. Special care is made to FPU instructions for NaN handling. Benchmark results on Xeon E5630 (Westmere EP): name old time/op new time/op delta BinaryTree17-16 4.99s ± 9% 4.66s ± 2% ~ (p=0.095 n=5+5) Fannkuch11-16 4.93s ± 3% 5.04s ± 2% ~ (p=0.548 n=5+5) FmtFprintfEmpty-16 58.8ns ± 7% 61.4ns ±14% ~ (p=0.579 n=5+5) FmtFprintfString-16 114ns ± 2% 114ns ± 4% ~ (p=0.603 n=5+5) FmtFprintfInt-16 181ns ± 4% 125ns ± 3% -30.90% (p=0.008 n=5+5) FmtFprintfIntInt-16 263ns ± 2% 217ns ± 2% -17.34% (p=0.008 n=5+5) FmtFprintfPrefixedInt-16 230ns ± 1% 212ns ± 1% -7.99% (p=0.008 n=5+5) FmtFprintfFloat-16 411ns ± 3% 344ns ± 5% -16.43% (p=0.008 n=5+5) FmtManyArgs-16 828ns ± 4% 790ns ± 2% -4.59% (p=0.032 n=5+5) GobDecode-16 10.9ms ± 4% 10.8ms ± 5% ~ (p=0.548 n=5+5) GobEncode-16 9.52ms ± 5% 9.46ms ± 2% ~ (p=1.000 n=5+5) Gzip-16 334ms ± 2% 337ms ± 2% ~ (p=0.548 n=5+5) Gunzip-16 64.4ms ± 1% 65.0ms ± 1% +1.00% (p=0.008 n=5+5) HTTPClientServer-16 156µs ± 3% 155µs ± 3% ~ (p=0.690 n=5+5) JSONEncode-16 21.0ms ± 1% 21.8ms ± 0% +3.76% (p=0.016 n=5+4) JSONDecode-16 95.1ms ± 0% 95.7ms ± 1% ~ (p=0.151 n=5+5) Mandelbrot200-16 6.38ms ± 1% 6.42ms ± 1% ~ (p=0.095 n=5+5) GoParse-16 5.47ms ± 2% 5.36ms ± 1% -1.95% (p=0.016 n=5+5) RegexpMatchEasy0_32-16 111ns ± 1% 111ns ± 1% ~ (p=0.635 n=5+4) RegexpMatchEasy0_1K-16 408ns ± 1% 411ns ± 2% ~ (p=0.087 n=5+5) RegexpMatchEasy1_32-16 103ns ± 1% 104ns ± 1% ~ (p=0.484 n=5+5) RegexpMatchEasy1_1K-16 659ns ± 2% 652ns ± 1% ~ (p=0.571 n=5+5) RegexpMatchMedium_32-16 176ns ± 2% 174ns ± 1% ~ (p=0.476 n=5+5) RegexpMatchMedium_1K-16 58.6µs ± 4% 57.7µs ± 4% ~ (p=0.548 n=5+5) RegexpMatchHard_32-16 3.07µs ± 3% 3.04µs ± 4% ~ (p=0.421 n=5+5) RegexpMatchHard_1K-16 89.2µs ± 1% 87.9µs ± 2% -1.52% (p=0.032 n=5+5) Revcomp-16 575ms ± 0% 587ms ± 2% +2.12% (p=0.032 n=4+5) Template-16 110ms ± 1% 107ms ± 3% -3.00% (p=0.032 n=5+5) TimeParse-16 463ns ± 0% 462ns ± 0% ~ (p=0.810 n=5+4) TimeFormat-16 538ns ± 0% 535ns ± 0% -0.63% (p=0.024 n=5+5) name old speed new speed delta GobDecode-16 70.7MB/s ± 4% 71.4MB/s ± 5% ~ (p=0.452 n=5+5) GobEncode-16 80.7MB/s ± 5% 81.2MB/s ± 2% ~ (p=1.000 n=5+5) Gzip-16 58.2MB/s ± 2% 57.7MB/s ± 2% ~ (p=0.452 n=5+5) Gunzip-16 302MB/s ± 1% 299MB/s ± 1% -0.99% (p=0.008 n=5+5) JSONEncode-16 92.4MB/s ± 1% 89.1MB/s ± 0% -3.63% (p=0.016 n=5+4) JSONDecode-16 20.4MB/s ± 0% 20.3MB/s ± 1% ~ (p=0.135 n=5+5) GoParse-16 10.6MB/s ± 2% 10.8MB/s ± 1% +2.00% (p=0.016 n=5+5) RegexpMatchEasy0_32-16 286MB/s ± 1% 285MB/s ± 3% ~ (p=1.000 n=5+5) RegexpMatchEasy0_1K-16 2.51GB/s ± 1% 2.49GB/s ± 2% ~ (p=0.095 n=5+5) RegexpMatchEasy1_32-16 309MB/s ± 1% 307MB/s ± 1% ~ (p=0.548 n=5+5) RegexpMatchEasy1_1K-16 1.55GB/s ± 2% 1.57GB/s ± 1% ~ (p=0.690 n=5+5) RegexpMatchMedium_32-16 5.68MB/s ± 2% 5.73MB/s ± 1% ~ (p=0.579 n=5+5) RegexpMatchMedium_1K-16 17.5MB/s ± 4% 17.8MB/s ± 4% ~ (p=0.500 n=5+5) RegexpMatchHard_32-16 10.4MB/s ± 3% 10.5MB/s ± 4% ~ (p=0.460 n=5+5) RegexpMatchHard_1K-16 11.5MB/s ± 1% 11.7MB/s ± 2% +1.57% (p=0.032 n=5+5) Revcomp-16 442MB/s ± 0% 433MB/s ± 2% -2.05% (p=0.032 n=4+5) Template-16 17.7MB/s ± 1% 18.2MB/s ± 3% +3.12% (p=0.032 n=5+5) Change-Id: I6972e8f35f2b31f9a42ac473a6bf419a18022558 Reviewed-on: https://go-review.googlesource.com/100935 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
Geoff Berry
|
e244a7a7d3 |
cmd/compile/internal/ssa: add patterns for arm64 bitfield opcodes
Add patterns to match common idioms for EXTR, BFI, BFXIL, SBFIZ, SBFX,
UBFIZ and UBFX opcodes.
go1 benchmarks results on Amberwing:
name old time/op new time/op delta
FmtManyArgs 786ns ± 2% 714ns ± 1% -9.20% (p=0.000 n=10+10)
Gzip 437ms ± 0% 402ms ± 0% -7.99% (p=0.000 n=10+10)
FmtFprintfIntInt 196ns ± 0% 182ns ± 0% -7.28% (p=0.000 n=10+9)
FmtFprintfPrefixedInt 207ns ± 0% 199ns ± 0% -3.86% (p=0.000 n=10+10)
FmtFprintfFloat 324ns ± 0% 316ns ± 0% -2.47% (p=0.000 n=10+8)
FmtFprintfInt 119ns ± 0% 117ns ± 0% -1.68% (p=0.000 n=10+9)
GobDecode 12.8ms ± 2% 12.6ms ± 1% -1.62% (p=0.002 n=10+10)
JSONDecode 94.4ms ± 1% 93.4ms ± 0% -1.10% (p=0.000 n=10+10)
RegexpMatchEasy0_32 247ns ± 0% 245ns ± 0% -0.65% (p=0.000 n=10+10)
RegexpMatchMedium_32 314ns ± 0% 312ns ± 0% -0.64% (p=0.000 n=10+10)
RegexpMatchEasy0_1K 541ns ± 0% 538ns ± 0% -0.55% (p=0.000 n=10+9)
TimeParse 450ns ± 1% 448ns ± 1% -0.42% (p=0.035 n=9+9)
RegexpMatchEasy1_32 244ns ± 0% 243ns ± 0% -0.41% (p=0.000 n=10+10)
GoParse 6.03ms ± 0% 6.00ms ± 0% -0.40% (p=0.002 n=10+10)
RegexpMatchEasy1_1K 779ns ± 0% 777ns ± 0% -0.26% (p=0.000 n=10+10)
RegexpMatchHard_32 2.75µs ± 0% 2.74µs ± 1% -0.06% (p=0.026 n=9+9)
BinaryTree17 11.7s ± 0% 11.6s ± 0% ~ (p=0.089 n=10+10)
HTTPClientServer 89.1µs ± 1% 89.5µs ± 2% ~ (p=0.436 n=10+10)
RegexpMatchHard_1K 78.9µs ± 0% 79.5µs ± 2% ~ (p=0.469 n=10+10)
FmtFprintfEmpty 58.5ns ± 0% 58.5ns ± 0% ~ (all equal)
GobEncode 12.0ms ± 1% 12.1ms ± 0% ~ (p=0.075 n=10+10)
Revcomp 669ms ± 0% 668ms ± 0% ~ (p=0.091 n=7+9)
Mandelbrot200 5.35ms ± 0% 5.36ms ± 0% +0.07% (p=0.000 n=9+9)
RegexpMatchMedium_1K 52.1µs ± 0% 52.1µs ± 0% +0.10% (p=0.000 n=9+9)
Fannkuch11 3.25s ± 0% 3.26s ± 0% +0.36% (p=0.000 n=9+10)
FmtFprintfString 114ns ± 1% 115ns ± 0% +0.52% (p=0.011 n=10+10)
JSONEncode 20.2ms ± 0% 20.3ms ± 0% +0.65% (p=0.000 n=10+10)
Template 91.3ms ± 0% 92.3ms ± 0% +1.08% (p=0.000 n=10+10)
TimeFormat 484ns ± 0% 495ns ± 1% +2.30% (p=0.000 n=9+10)
There are some opportunities to improve this change further by adding
patterns to match the "extended register" versions of ADD/SUB/CMP, but I
think that should be evaluated on its own. The regressions in Template
and TimeFormat would likely be recovered by this, as they seem to be due
to generating:
ubfiz x0, x0, #3, #8
add x1, x2, x0
instead of
add x1, x2, x0, lsl #3
Change-Id: I5644a8d70ac7a98e784a377a2b76ab47a3415a4b
Reviewed-on: https://go-review.googlesource.com/88355
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
|
||
|
Alberto Donizetti
|
ded9a1b372 |
test/codegen: port len/cap pow2 div tests to codegen
And delete them from asm_test. Change-Id: I29c8d098a8893e6b669b6272a2f508985ac9d618 Reviewed-on: https://go-review.googlesource.com/100876 Reviewed-by: Cherry Zhang <cherryyz@google.com> |
||
|
Ilya Tocar
|
644d14ea0f |
Revert "cmd/compile: implement CMOV on amd64"
This reverts commit
|
||
|
Alberto Donizetti
|
cd3aae9b81 |
test/codegen: port all small memmove tests to codegen
This change ports all the remaining tests checking that small memmoves are replaced with MOVs to the new codegen test harness, and deletes them from the asm_test file. Change-Id: I01c94b441e27a5d61518035af62d62779dafeb56 Reviewed-on: https://go-review.googlesource.com/100476 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
||
|
Alberto Donizetti
|
858042b8fd |
test/codegen: add codegen tests for div
Change-Id: I6ce8981e85fd55ade6078b0946e54a9215d9deca Reviewed-on: https://go-review.googlesource.com/100575 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
||
|
isharipo
|
85a8d25d53 |
cmd/compile/internal/ssa: emit IMUL3{L/Q} for MUL{L/Q}const on x86
cmd/asm now supports three-operand form of IMUL,
so instead of using IMUL with resultInArg0, emit IMUL3 instruction.
This results in less redundant MOVs where SSA assigns
different registers to input[0] and dst arguments.
Note: these have exactly the same encoding when reg0=reg1:
IMUL3x $const, reg0, reg1
IMULx $const, reg
Two-operand IMULx is like a crippled IMUL3x, with dst fixed to input[0].
This is why we don't bother to generate IMULx for the case where
dst is the same as input[0].
Change-Id: I4becda475b3dffdd07b6fdf1c75bacc82af654e4
Reviewed-on: https://go-review.googlesource.com/99656
Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Giovanni Bajo <rasky@develer.com>
Reviewed-by: Keith Randall <khr@golang.org>
|
||
|
Giovanni Bajo
|
080187f4f7 |
cmd/compile: implement CMOV on amd64
This builds upon the branchelim pass, activating it for amd64 and lowering CondSelect. Special care is made to FPU instructions for NaN handling. Benchmark results on Xeon E5630 (Westmere EP): name old time/op new time/op delta BinaryTree17-16 4.99s ± 9% 4.66s ± 2% ~ (p=0.095 n=5+5) Fannkuch11-16 4.93s ± 3% 5.04s ± 2% ~ (p=0.548 n=5+5) FmtFprintfEmpty-16 58.8ns ± 7% 61.4ns ±14% ~ (p=0.579 n=5+5) FmtFprintfString-16 114ns ± 2% 114ns ± 4% ~ (p=0.603 n=5+5) FmtFprintfInt-16 181ns ± 4% 125ns ± 3% -30.90% (p=0.008 n=5+5) FmtFprintfIntInt-16 263ns ± 2% 217ns ± 2% -17.34% (p=0.008 n=5+5) FmtFprintfPrefixedInt-16 230ns ± 1% 212ns ± 1% -7.99% (p=0.008 n=5+5) FmtFprintfFloat-16 411ns ± 3% 344ns ± 5% -16.43% (p=0.008 n=5+5) FmtManyArgs-16 828ns ± 4% 790ns ± 2% -4.59% (p=0.032 n=5+5) GobDecode-16 10.9ms ± 4% 10.8ms ± 5% ~ (p=0.548 n=5+5) GobEncode-16 9.52ms ± 5% 9.46ms ± 2% ~ (p=1.000 n=5+5) Gzip-16 334ms ± 2% 337ms ± 2% ~ (p=0.548 n=5+5) Gunzip-16 64.4ms ± 1% 65.0ms ± 1% +1.00% (p=0.008 n=5+5) HTTPClientServer-16 156µs ± 3% 155µs ± 3% ~ (p=0.690 n=5+5) JSONEncode-16 21.0ms ± 1% 21.8ms ± 0% +3.76% (p=0.016 n=5+4) JSONDecode-16 95.1ms ± 0% 95.7ms ± 1% ~ (p=0.151 n=5+5) Mandelbrot200-16 6.38ms ± 1% 6.42ms ± 1% ~ (p=0.095 n=5+5) GoParse-16 5.47ms ± 2% 5.36ms ± 1% -1.95% (p=0.016 n=5+5) RegexpMatchEasy0_32-16 111ns ± 1% 111ns ± 1% ~ (p=0.635 n=5+4) RegexpMatchEasy0_1K-16 408ns ± 1% 411ns ± 2% ~ (p=0.087 n=5+5) RegexpMatchEasy1_32-16 103ns ± 1% 104ns ± 1% ~ (p=0.484 n=5+5) RegexpMatchEasy1_1K-16 659ns ± 2% 652ns ± 1% ~ (p=0.571 n=5+5) RegexpMatchMedium_32-16 176ns ± 2% 174ns ± 1% ~ (p=0.476 n=5+5) RegexpMatchMedium_1K-16 58.6µs ± 4% 57.7µs ± 4% ~ (p=0.548 n=5+5) RegexpMatchHard_32-16 3.07µs ± 3% 3.04µs ± 4% ~ (p=0.421 n=5+5) RegexpMatchHard_1K-16 89.2µs ± 1% 87.9µs ± 2% -1.52% (p=0.032 n=5+5) Revcomp-16 575ms ± 0% 587ms ± 2% +2.12% (p=0.032 n=4+5) Template-16 110ms ± 1% 107ms ± 3% -3.00% (p=0.032 n=5+5) TimeParse-16 463ns ± 0% 462ns ± 0% ~ (p=0.810 n=5+4) TimeFormat-16 538ns ± 0% 535ns ± 0% -0.63% (p=0.024 n=5+5) name old speed new speed delta GobDecode-16 70.7MB/s ± 4% 71.4MB/s ± 5% ~ (p=0.452 n=5+5) GobEncode-16 80.7MB/s ± 5% 81.2MB/s ± 2% ~ (p=1.000 n=5+5) Gzip-16 58.2MB/s ± 2% 57.7MB/s ± 2% ~ (p=0.452 n=5+5) Gunzip-16 302MB/s ± 1% 299MB/s ± 1% -0.99% (p=0.008 n=5+5) JSONEncode-16 92.4MB/s ± 1% 89.1MB/s ± 0% -3.63% (p=0.016 n=5+4) JSONDecode-16 20.4MB/s ± 0% 20.3MB/s ± 1% ~ (p=0.135 n=5+5) GoParse-16 10.6MB/s ± 2% 10.8MB/s ± 1% +2.00% (p=0.016 n=5+5) RegexpMatchEasy0_32-16 286MB/s ± 1% 285MB/s ± 3% ~ (p=1.000 n=5+5) RegexpMatchEasy0_1K-16 2.51GB/s ± 1% 2.49GB/s ± 2% ~ (p=0.095 n=5+5) RegexpMatchEasy1_32-16 309MB/s ± 1% 307MB/s ± 1% ~ (p=0.548 n=5+5) RegexpMatchEasy1_1K-16 1.55GB/s ± 2% 1.57GB/s ± 1% ~ (p=0.690 n=5+5) RegexpMatchMedium_32-16 5.68MB/s ± 2% 5.73MB/s ± 1% ~ (p=0.579 n=5+5) RegexpMatchMedium_1K-16 17.5MB/s ± 4% 17.8MB/s ± 4% ~ (p=0.500 n=5+5) RegexpMatchHard_32-16 10.4MB/s ± 3% 10.5MB/s ± 4% ~ (p=0.460 n=5+5) RegexpMatchHard_1K-16 11.5MB/s ± 1% 11.7MB/s ± 2% +1.57% (p=0.032 n=5+5) Revcomp-16 442MB/s ± 0% 433MB/s ± 2% -2.05% (p=0.032 n=4+5) Template-16 17.7MB/s ± 1% 18.2MB/s ± 3% +3.12% (p=0.032 n=5+5) Change-Id: Ic7cb7374d07da031e771bdcbfdd832fd1b17159c Reviewed-on: https://go-review.googlesource.com/98695 Reviewed-by: Ilya Tocar <ilya.tocar@intel.com> |
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Giovanni Bajo
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f7ac70a566 |
test: move rotate tests to top-level testsuite.
Remove old tests from asm_test. Change-Id: Ib408ec7faa60068bddecf709b93ce308e0ef665a Reviewed-on: https://go-review.googlesource.com/100075 Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com> |
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Alberto Donizetti
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8e427a3878 |
test/codegen: add README file for the codegen test harness
This change adds a README file inside the test/codegen directory, explaining how to run the codegen tests and the syntax of the regexps comments used to match assembly instructions. Change-Id: Ica4eb3ffa9c6975371538cc8ae0ac3c1a3a03baf Reviewed-on: https://go-review.googlesource.com/99156 Reviewed-by: Keith Randall <khr@golang.org> |