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644b2dafc2
35596 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Alberto Donizetti
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644b2dafc2 |
test/codegen: add copyright headers to new codegen files
Change-Id: I9fe6572d1043ef9ee09c0925059ded554ad24c6b Reviewed-on: https://go-review.googlesource.com/98215 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Michael Fraenkel
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5b071bfa88 |
cmd/compile: convert type during finishcompare
When recursively calling walkexpr, r.Type is still the untyped value. It then sometimes recursively calls finishcompare, which complains that you can't compare the resulting expression to that untyped value. Updates #23834. Change-Id: I6b7acd3970ceaff8da9216bfa0ae24aca5dee828 Reviewed-on: https://go-review.googlesource.com/97856 Reviewed-by: Matthew Dempsky <mdempsky@google.com> |
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Than McIntosh
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9b95611e38 |
cmd/compile: add DWARF register mappings for ARM64.
Add DWARF register mappings for ARM64, so that that arch will become usable with "-dwarflocationlists". [NB: I've plugged in a set of numbers from the doc, but this will require additional manual testing.] Change-Id: Id9aa63857bc8b4f5c825f49274101cf372e9e856 Reviewed-on: https://go-review.googlesource.com/82515 Reviewed-by: Heschi Kreinick <heschi@google.com> |
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Alessandro Arzilli
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eca41af012 |
cmd/link: fix up debug_range for dsymutil (revert CL 72371)
Dsymutil, an utility used on macOS when externally linking executables, does not support base address selector entries in debug_ranges. CL 73271 worked around this problem by removing base address selectors and emitting CU-relative relocations for each list entry. This commit, as an optimization, reintroduces the base address selectors and changes the linker to remove them again, but only when it knows that it will have to invoke the external linker on macOS. Compilecmp comparing master with a branch that has scope tracking always enabled: completed 15 of 15, estimated time remaining 0s (eta 2:43PM) name old time/op new time/op delta Template 272ms ± 8% 257ms ± 5% -5.33% (p=0.000 n=15+14) Unicode 124ms ± 7% 122ms ± 5% ~ (p=0.210 n=14+14) GoTypes 873ms ± 3% 870ms ± 5% ~ (p=0.856 n=15+13) Compiler 4.49s ± 2% 4.49s ± 5% ~ (p=0.982 n=14+14) SSA 11.8s ± 4% 11.8s ± 3% ~ (p=0.653 n=15+15) Flate 163ms ± 6% 164ms ± 9% ~ (p=0.914 n=14+15) GoParser 203ms ± 6% 202ms ±10% ~ (p=0.571 n=14+14) Reflect 547ms ± 7% 542ms ± 4% ~ (p=0.914 n=15+14) Tar 244ms ± 7% 237ms ± 3% -2.80% (p=0.002 n=14+13) XML 289ms ± 6% 289ms ± 5% ~ (p=0.839 n=14+14) [Geo mean] 537ms 531ms -1.10% name old user-time/op new user-time/op delta Template 360ms ± 4% 341ms ± 7% -5.16% (p=0.000 n=14+14) Unicode 189ms ±11% 190ms ± 8% ~ (p=0.844 n=15+15) GoTypes 1.13s ± 4% 1.14s ± 7% ~ (p=0.582 n=15+14) Compiler 5.34s ± 2% 5.40s ± 4% +1.19% (p=0.036 n=11+13) SSA 14.7s ± 2% 14.7s ± 3% ~ (p=0.602 n=15+15) Flate 211ms ± 7% 214ms ± 8% ~ (p=0.252 n=14+14) GoParser 267ms ±12% 266ms ± 2% ~ (p=0.837 n=15+11) Reflect 706ms ± 4% 701ms ± 3% ~ (p=0.213 n=14+12) Tar 331ms ± 9% 320ms ± 5% -3.30% (p=0.025 n=15+14) XML 378ms ± 4% 373ms ± 6% ~ (p=0.253 n=14+15) [Geo mean] 704ms 700ms -0.58% name old alloc/op new alloc/op delta Template 38.0MB ± 0% 38.4MB ± 0% +1.12% (p=0.000 n=15+15) Unicode 28.8MB ± 0% 28.8MB ± 0% +0.17% (p=0.000 n=15+15) GoTypes 112MB ± 0% 114MB ± 0% +1.47% (p=0.000 n=15+15) Compiler 465MB ± 0% 473MB ± 0% +1.71% (p=0.000 n=15+15) SSA 1.48GB ± 0% 1.53GB ± 0% +3.07% (p=0.000 n=15+15) Flate 24.3MB ± 0% 24.7MB ± 0% +1.67% (p=0.000 n=15+15) GoParser 30.7MB ± 0% 31.0MB ± 0% +1.15% (p=0.000 n=12+15) Reflect 76.3MB ± 0% 77.1MB ± 0% +0.97% (p=0.000 n=15+15) Tar 39.2MB ± 0% 39.6MB ± 0% +0.91% (p=0.000 n=15+15) XML 41.5MB ± 0% 42.0MB ± 0% +1.29% (p=0.000 n=15+15) [Geo mean] 77.5MB 78.6MB +1.35% name old allocs/op new allocs/op delta Template 385k ± 0% 387k ± 0% +0.51% (p=0.000 n=15+15) Unicode 342k ± 0% 343k ± 0% +0.10% (p=0.000 n=14+15) GoTypes 1.19M ± 0% 1.19M ± 0% +0.62% (p=0.000 n=15+15) Compiler 4.51M ± 0% 4.54M ± 0% +0.50% (p=0.000 n=14+15) SSA 12.2M ± 0% 12.4M ± 0% +1.12% (p=0.000 n=14+15) Flate 234k ± 0% 236k ± 0% +0.60% (p=0.000 n=15+15) GoParser 318k ± 0% 320k ± 0% +0.60% (p=0.000 n=15+15) Reflect 974k ± 0% 977k ± 0% +0.27% (p=0.000 n=15+15) Tar 395k ± 0% 397k ± 0% +0.37% (p=0.000 n=14+15) XML 404k ± 0% 407k ± 0% +0.53% (p=0.000 n=15+15) [Geo mean] 794k 798k +0.52% name old text-bytes new text-bytes delta HelloSize 680kB ± 0% 680kB ± 0% ~ (all equal) name old data-bytes new data-bytes delta HelloSize 9.62kB ± 0% 9.62kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 125kB ± 0% 125kB ± 0% ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.11MB ± 0% 1.13MB ± 0% +1.85% (p=0.000 n=15+15) Change-Id: I61c98ba0340cb798034b2bb55e3ab3a58ac1cf23 Reviewed-on: https://go-review.googlesource.com/98075 Reviewed-by: Heschi Kreinick <heschi@google.com> |
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Heschi Kreinick
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9dc351beba |
cmd/compile/internal/ssa: batch up all zero-width instructions
When generating location lists, batch up changes for all zero-width instructions, not just phis. This prevents the creation of location list entries that don't actually cover any instructions. This isn't perfect because of the caveats in the prior CL (Copy is zero-width sometimes) but in practice this seems to fix all of the empty lists in std. Change-Id: Ice4a9ade36b6b24ca111d1494c414eec96e5af25 Reviewed-on: https://go-review.googlesource.com/97958 Run-TryBot: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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Heschi Kreinick
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caa1b4afbd |
cmd/compile/internal/ssa: note zero-width Ops
Add a bool to opInfo to indicate if an Op never results in any instructions. This is a conservative approximation: some operations, like Copy, may or may not generate code depending on their arguments. I built the list by reading each arch's ssaGenValue function. Hopefully I got them all. Change-Id: I130b251b65f18208294e129bb7ddc3f91d57d31d Reviewed-on: https://go-review.googlesource.com/97957 Reviewed-by: Keith Randall <khr@golang.org> |
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Zhou Peng
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b77aad0891 |
runtime: fix typo, func comments should start with function name
Change-Id: I289af4884583537639800e37928c22814d38cba9 Reviewed-on: https://go-review.googlesource.com/98115 Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com> |
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Alessandro Arzilli
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3fca7306f4 |
cmd/compile: optimize scope tracking
1. Detect and remove the markers of lexical scopes that don't contain any variables early in noder, instead of waiting until the end of DWARF generation. This saves memory by never allocating some of the markers and optimizes some of the algorithms that depend on the number of scopes. 2. Assign scopes to Progs by doing, for each Prog, a binary search over the markers array. This is faster, compared to sorting the Prog list because there are fewer markers than there are Progs. completed 15 of 15, estimated time remaining 0s (eta 2:30PM) name old time/op new time/op delta Template 274ms ± 5% 260ms ± 6% -4.91% (p=0.000 n=15+15) Unicode 126ms ± 5% 127ms ± 9% ~ (p=0.856 n=13+15) GoTypes 861ms ± 5% 857ms ± 4% ~ (p=0.595 n=15+15) Compiler 4.11s ± 4% 4.12s ± 5% ~ (p=1.000 n=15+15) SSA 10.7s ± 2% 10.9s ± 4% +2.01% (p=0.002 n=14+14) Flate 163ms ± 4% 166ms ± 9% ~ (p=0.134 n=14+15) GoParser 203ms ± 4% 205ms ± 6% ~ (p=0.461 n=15+15) Reflect 544ms ± 5% 549ms ± 4% ~ (p=0.174 n=15+15) Tar 249ms ± 9% 245ms ± 6% ~ (p=0.285 n=15+15) XML 286ms ± 4% 291ms ± 5% ~ (p=0.081 n=15+15) [Geo mean] 528ms 529ms +0.14% name old user-time/op new user-time/op delta Template 358ms ± 7% 354ms ± 5% ~ (p=0.242 n=14+15) Unicode 189ms ±11% 191ms ±10% ~ (p=0.438 n=15+15) GoTypes 1.15s ± 4% 1.14s ± 3% ~ (p=0.405 n=15+15) Compiler 5.36s ± 6% 5.35s ± 5% ~ (p=0.588 n=15+15) SSA 14.6s ± 3% 15.0s ± 4% +2.58% (p=0.000 n=15+15) Flate 214ms ±12% 216ms ± 8% ~ (p=0.539 n=15+15) GoParser 267ms ± 6% 270ms ± 5% ~ (p=0.569 n=15+15) Reflect 712ms ± 5% 709ms ± 4% ~ (p=0.894 n=15+15) Tar 329ms ± 8% 330ms ± 5% ~ (p=0.974 n=14+15) XML 371ms ± 3% 381ms ± 5% +2.85% (p=0.002 n=13+15) [Geo mean] 705ms 709ms +0.62% name old alloc/op new alloc/op delta Template 38.0MB ± 0% 38.4MB ± 0% +1.27% (p=0.000 n=15+14) Unicode 28.8MB ± 0% 28.8MB ± 0% +0.16% (p=0.000 n=15+14) GoTypes 112MB ± 0% 114MB ± 0% +1.64% (p=0.000 n=15+15) Compiler 465MB ± 0% 474MB ± 0% +1.91% (p=0.000 n=15+15) SSA 1.48GB ± 0% 1.53GB ± 0% +3.32% (p=0.000 n=15+15) Flate 24.3MB ± 0% 24.8MB ± 0% +1.77% (p=0.000 n=14+15) GoParser 30.7MB ± 0% 31.1MB ± 0% +1.27% (p=0.000 n=15+15) Reflect 76.3MB ± 0% 77.1MB ± 0% +1.03% (p=0.000 n=15+15) Tar 39.2MB ± 0% 39.6MB ± 0% +1.02% (p=0.000 n=13+15) XML 41.5MB ± 0% 42.1MB ± 0% +1.45% (p=0.000 n=15+15) [Geo mean] 77.5MB 78.7MB +1.48% name old allocs/op new allocs/op delta Template 385k ± 0% 387k ± 0% +0.54% (p=0.000 n=15+15) Unicode 342k ± 0% 343k ± 0% +0.10% (p=0.000 n=15+15) GoTypes 1.19M ± 0% 1.19M ± 0% +0.64% (p=0.000 n=14+15) Compiler 4.51M ± 0% 4.54M ± 0% +0.53% (p=0.000 n=15+15) SSA 12.2M ± 0% 12.4M ± 0% +1.16% (p=0.000 n=15+15) Flate 234k ± 0% 236k ± 0% +0.63% (p=0.000 n=14+15) GoParser 318k ± 0% 320k ± 0% +0.63% (p=0.000 n=15+15) Reflect 974k ± 0% 977k ± 0% +0.28% (p=0.000 n=15+15) Tar 395k ± 0% 397k ± 0% +0.38% (p=0.000 n=15+13) XML 404k ± 0% 407k ± 0% +0.55% (p=0.000 n=15+15) [Geo mean] 794k 799k +0.55% name old text-bytes new text-bytes delta HelloSize 680kB ± 0% 680kB ± 0% ~ (all equal) name old data-bytes new data-bytes delta HelloSize 9.62kB ± 0% 9.62kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 125kB ± 0% 125kB ± 0% ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.11MB ± 0% 1.12MB ± 0% +1.11% (p=0.000 n=15+15) Change-Id: I95a0173ee28c52be1a4851d2a6e389529e74bf28 Reviewed-on: https://go-review.googlesource.com/95396 Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Heschi Kreinick <heschi@google.com> |
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Tobias Klauser
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1023b016d5 |
syscall: fix nil pointer dereference in Select on linux/{arm64,mips64x}
The timeout parameter might be nil, don't dereference it unconditionally. Fixes #24189 Change-Id: I03e6a1ab74fe30322ce6bcfd3d6c42130b6d61be Reviewed-on: https://go-review.googlesource.com/97819 Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Brad Fitzpatrick
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1fadbc1a76 |
Revert "runtime: use bytes.IndexByte in findnull"
This reverts commit
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Heschi Kreinick
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f1fc9da316 |
cmd/link: fix up location lists for dsymutil
LLVM tools, particularly lldb and dsymutil, don't support base address selection entries in location lists. When targeting GOOS=darwin, mode, have the linker translate location lists to CU-relative form instead. Technically, this isn't necessary when linking internally, as long as nobody plans to use anything other than Delve to look at the DWARF. But someone might want to use lldb, and it's really confusing when dwarfdump shows gibberish for the location entries. The performance cost isn't noticeable, so enable it even for internal linking. Doing this in the linker is a little weird, but it was more expensive in the compiler, probably because the compiler is much more stressful to the GC. Also, if we decide to only do it for external linking, the compiler can't see the link mode. Benchmark before and after this commit on Mac with -dwarflocationlists=1: name old time/op new time/op delta StdCmd 21.3s ± 1% 21.3s ± 1% ~ (p=0.310 n=27+27) Only StdCmd is relevant, because only StdCmd runs the linker. Whatever the cost is here, it's not very large. Change-Id: Ic8ef780d0e263230ce6aa3ca3a32fc9abd750b1e Reviewed-on: https://go-review.googlesource.com/97956 Run-TryBot: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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Heschi Kreinick
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bff29f2d17 |
cmd/compile/internal/ssa: avoid accidental list ends
Some SSA values don't translate into any instructions. If a function began with two of them, and both modified the storage of the same variable, we'd end up with a location list entry that started and ended at 0. That looks like an end-of-list entry, which would then confuse downstream tools, particularly the fixup in the linker. "Fix" this by changing the end of such entries to 1. Should be harmless, since AFAIK we don't generate any 1-byte instructions. Later CLs will reduce the frequency of these entries anyway. Change-Id: I9b7e5e69f914244cc826fb9f4a6acfe2dc695f81 Reviewed-on: https://go-review.googlesource.com/97955 Run-TryBot: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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Alessandro Arzilli
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87736fc450 |
cmd/compile: fix dwarf ranges of inlined subroutine entries
DWARF ranges are half-open. Fixes #23928 Change-Id: I71b3384d1bc2c65bd37ca8a02a0b7ff48fec3688 Reviewed-on: https://go-review.googlesource.com/94816 Reviewed-by: Than McIntosh <thanm@google.com> Run-TryBot: Than McIntosh <thanm@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Cherry Zhang
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2baed3856d |
cmd/asm: fix assembling return jump
In RET instruction, the operand is the return jump's target, which should be put in Prog.To. Add an action "buildrundir" to the test driver, which builds (compile+assemble+link) the code in a directory and runs the resulting binary. Fixes #23838. Change-Id: I7ebe7eda49024b40a69a24857322c5ca9c67babb Reviewed-on: https://go-review.googlesource.com/94175 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Austin Clements <austin@google.com> |
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Balaram Makam
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213a75171d |
runtime: improve arm64 memmove implementation
Improve runtime memmove_arm64.s specializing for small copies and processing 32 bytes per iteration for 32 bytes or more. Benchmark results of runtime/Memmove on Amberwing: name old time/op new time/op delta Memmove/0 7.61ns ± 0% 7.20ns ± 0% ~ (p=0.053 n=5+7) Memmove/1 9.28ns ± 0% 8.80ns ± 0% -5.17% (p=0.000 n=4+8) Memmove/2 9.65ns ± 0% 9.20ns ± 0% -4.68% (p=0.000 n=5+8) Memmove/3 10.0ns ± 0% 9.2ns ± 0% -7.83% (p=0.000 n=5+8) Memmove/4 10.6ns ± 0% 9.2ns ± 0% -13.21% (p=0.000 n=5+8) Memmove/5 11.0ns ± 0% 9.2ns ± 0% -16.36% (p=0.000 n=5+8) Memmove/6 12.4ns ± 0% 9.2ns ± 0% -25.81% (p=0.000 n=5+8) Memmove/7 13.1ns ± 0% 9.2ns ± 0% -29.56% (p=0.000 n=5+8) Memmove/8 9.10ns ± 1% 9.20ns ± 0% +1.08% (p=0.002 n=5+8) Memmove/9 9.67ns ± 0% 9.20ns ± 0% -4.88% (p=0.000 n=5+8) Memmove/10 10.4ns ± 0% 9.2ns ± 0% -11.54% (p=0.000 n=5+8) Memmove/11 10.9ns ± 0% 9.2ns ± 0% -15.60% (p=0.000 n=5+8) Memmove/12 11.5ns ± 0% 9.2ns ± 0% -20.00% (p=0.000 n=5+8) Memmove/13 12.4ns ± 0% 9.2ns ± 0% -25.81% (p=0.000 n=5+8) Memmove/14 13.1ns ± 0% 9.2ns ± 0% -29.77% (p=0.000 n=5+8) Memmove/15 13.8ns ± 0% 9.2ns ± 0% -33.33% (p=0.000 n=5+8) Memmove/16 9.70ns ± 0% 9.20ns ± 0% -5.19% (p=0.000 n=5+8) Memmove/32 10.6ns ± 0% 9.2ns ± 0% -13.21% (p=0.000 n=4+8) Memmove/64 13.4ns ± 0% 10.2ns ± 0% -23.88% (p=0.000 n=4+8) Memmove/128 18.1ns ± 1% 13.2ns ± 0% -26.99% (p=0.000 n=5+8) Memmove/256 25.2ns ± 0% 16.4ns ± 0% -34.92% (p=0.000 n=5+8) Memmove/512 36.4ns ± 0% 22.8ns ± 0% -37.36% (p=0.000 n=5+8) Memmove/1024 70.1ns ± 0% 36.8ns ±11% -47.49% (p=0.002 n=5+8) Memmove/2048 121ns ± 0% 61ns ± 0% ~ (p=0.053 n=5+7) Memmove/4096 224ns ± 0% 120ns ± 0% -46.43% (p=0.000 n=5+8) MemmoveUnalignedDst/0 8.40ns ± 0% 8.00ns ± 0% -4.76% (p=0.000 n=5+8) MemmoveUnalignedDst/1 9.87ns ± 1% 10.00ns ± 0% ~ (p=0.070 n=5+8) MemmoveUnalignedDst/2 10.6ns ± 0% 10.4ns ± 0% -1.89% (p=0.000 n=5+8) MemmoveUnalignedDst/3 10.8ns ± 0% 10.4ns ± 0% -3.70% (p=0.000 n=5+8) MemmoveUnalignedDst/4 10.9ns ± 0% 10.3ns ± 0% ~ (p=0.053 n=5+7) MemmoveUnalignedDst/5 11.5ns ± 0% 10.3ns ± 1% -10.22% (p=0.000 n=4+8) MemmoveUnalignedDst/6 13.2ns ± 0% 10.4ns ± 1% -21.50% (p=0.000 n=5+8) MemmoveUnalignedDst/7 13.7ns ± 0% 10.3ns ± 1% -24.64% (p=0.000 n=4+8) MemmoveUnalignedDst/8 10.1ns ± 0% 10.4ns ± 0% +2.97% (p=0.002 n=5+8) MemmoveUnalignedDst/9 10.7ns ± 0% 10.4ns ± 0% -2.80% (p=0.000 n=5+8) MemmoveUnalignedDst/10 11.2ns ± 1% 10.4ns ± 0% -6.81% (p=0.000 n=5+8) MemmoveUnalignedDst/11 11.6ns ± 0% 10.4ns ± 0% -10.34% (p=0.000 n=5+8) MemmoveUnalignedDst/12 12.5ns ± 2% 10.4ns ± 0% -16.53% (p=0.000 n=5+8) MemmoveUnalignedDst/13 13.7ns ± 0% 10.4ns ± 0% -24.09% (p=0.000 n=5+8) MemmoveUnalignedDst/14 14.0ns ± 0% 10.4ns ± 0% -25.71% (p=0.000 n=5+8) MemmoveUnalignedDst/15 14.6ns ± 0% 10.4ns ± 0% -28.77% (p=0.000 n=5+8) MemmoveUnalignedDst/16 10.5ns ± 0% 10.4ns ± 0% -0.95% (p=0.000 n=5+8) MemmoveUnalignedDst/32 12.4ns ± 0% 11.6ns ± 0% -6.05% (p=0.000 n=5+8) MemmoveUnalignedDst/64 15.2ns ± 0% 12.3ns ± 0% -19.08% (p=0.000 n=5+8) MemmoveUnalignedDst/128 18.7ns ± 0% 15.2ns ± 0% -18.72% (p=0.000 n=5+8) MemmoveUnalignedDst/256 25.1ns ± 0% 18.6ns ± 0% -25.90% (p=0.000 n=5+8) MemmoveUnalignedDst/512 37.8ns ± 0% 24.4ns ± 0% -35.45% (p=0.000 n=5+8) MemmoveUnalignedDst/1024 74.6ns ± 0% 40.4ns ± 0% ~ (p=0.053 n=5+7) MemmoveUnalignedDst/2048 133ns ± 0% 75ns ± 0% -43.91% (p=0.000 n=5+8) MemmoveUnalignedDst/4096 247ns ± 0% 141ns ± 0% -42.91% (p=0.000 n=5+8) MemmoveUnalignedSrc/0 8.40ns ± 0% 8.00ns ± 0% -4.76% (p=0.000 n=5+8) MemmoveUnalignedSrc/1 9.81ns ± 0% 10.00ns ± 0% +1.98% (p=0.002 n=5+8) MemmoveUnalignedSrc/2 10.5ns ± 0% 10.0ns ± 0% -4.76% (p=0.000 n=5+8) MemmoveUnalignedSrc/3 10.7ns ± 1% 10.0ns ± 0% -6.89% (p=0.000 n=5+8) MemmoveUnalignedSrc/4 11.3ns ± 0% 10.0ns ± 0% -11.50% (p=0.000 n=5+8) MemmoveUnalignedSrc/5 11.6ns ± 0% 10.0ns ± 0% -13.79% (p=0.000 n=5+8) MemmoveUnalignedSrc/6 13.6ns ± 0% 10.0ns ± 0% -26.47% (p=0.000 n=5+8) MemmoveUnalignedSrc/7 14.4ns ± 0% 10.0ns ± 0% -30.75% (p=0.000 n=5+8) MemmoveUnalignedSrc/8 9.87ns ± 1% 10.00ns ± 0% ~ (p=0.070 n=5+8) MemmoveUnalignedSrc/9 10.4ns ± 0% 10.0ns ± 0% -3.85% (p=0.000 n=5+8) MemmoveUnalignedSrc/10 11.2ns ± 0% 10.0ns ± 0% -10.71% (p=0.000 n=5+8) MemmoveUnalignedSrc/11 11.8ns ± 0% 10.0ns ± 0% -15.25% (p=0.000 n=5+8) MemmoveUnalignedSrc/12 12.1ns ± 0% 10.0ns ± 0% -17.36% (p=0.000 n=5+8) MemmoveUnalignedSrc/13 13.6ns ± 0% 10.0ns ± 0% -26.47% (p=0.000 n=5+8) MemmoveUnalignedSrc/14 14.7ns ± 0% 10.0ns ± 0% -31.79% (p=0.000 n=5+8) MemmoveUnalignedSrc/15 14.4ns ± 0% 10.0ns ± 0% -30.56% (p=0.000 n=5+8) MemmoveUnalignedSrc/16 11.0ns ± 0% 10.0ns ± 0% -9.09% (p=0.000 n=5+8) MemmoveUnalignedSrc/32 11.5ns ± 0% 10.0ns ± 0% -13.04% (p=0.000 n=5+8) MemmoveUnalignedSrc/64 14.9ns ± 0% 11.2ns ± 0% -24.83% (p=0.000 n=4+8) MemmoveUnalignedSrc/128 19.5ns ± 0% 15.2ns ± 0% -22.05% (p=0.000 n=5+8) MemmoveUnalignedSrc/256 27.3ns ± 2% 19.2ns ± 0% -29.62% (p=0.000 n=5+8) MemmoveUnalignedSrc/512 40.4ns ± 0% 27.2ns ± 0% -32.67% (p=0.000 n=5+8) MemmoveUnalignedSrc/1024 75.4ns ± 0% 44.4ns ± 0% -41.15% (p=0.000 n=5+8) MemmoveUnalignedSrc/2048 131ns ± 0% 77ns ± 3% -41.56% (p=0.002 n=5+8) MemmoveUnalignedSrc/4096 248ns ± 0% 145ns ± 0% -41.53% (p=0.000 n=5+8) name old speed new speed delta Memmove/1 108MB/s ± 0% 114MB/s ± 0% +5.37% (p=0.004 n=4+8) Memmove/2 207MB/s ± 0% 217MB/s ± 0% +4.85% (p=0.002 n=5+8) Memmove/3 301MB/s ± 0% 326MB/s ± 0% +8.45% (p=0.002 n=5+8) Memmove/4 377MB/s ± 0% 435MB/s ± 0% +15.31% (p=0.004 n=4+8) Memmove/5 455MB/s ± 0% 543MB/s ± 0% +19.46% (p=0.002 n=5+8) Memmove/6 483MB/s ± 0% 652MB/s ± 0% +34.88% (p=0.003 n=5+7) Memmove/7 537MB/s ± 0% 761MB/s ± 0% +41.71% (p=0.002 n=5+8) Memmove/8 879MB/s ± 1% 869MB/s ± 0% -1.15% (p=0.000 n=5+7) Memmove/9 931MB/s ± 0% 978MB/s ± 0% +5.05% (p=0.002 n=5+8) Memmove/10 960MB/s ± 0% 1086MB/s ± 0% +13.13% (p=0.002 n=5+8) Memmove/11 1.00GB/s ± 0% 1.20GB/s ± 0% +18.92% (p=0.003 n=5+7) Memmove/12 1.04GB/s ± 0% 1.30GB/s ± 0% +25.40% (p=0.002 n=5+8) Memmove/13 1.05GB/s ± 0% 1.41GB/s ± 0% +34.87% (p=0.002 n=5+8) Memmove/14 1.07GB/s ± 0% 1.52GB/s ± 0% +42.14% (p=0.002 n=5+8) Memmove/15 1.09GB/s ± 0% 1.63GB/s ± 0% +49.91% (p=0.002 n=5+8) Memmove/16 1.65GB/s ± 0% 1.74GB/s ± 0% +5.40% (p=0.003 n=5+7) Memmove/32 3.01GB/s ± 0% 3.48GB/s ± 0% +15.58% (p=0.003 n=5+7) Memmove/64 4.76GB/s ± 0% 6.27GB/s ± 0% +31.75% (p=0.003 n=5+7) Memmove/128 7.08GB/s ± 1% 9.69GB/s ± 0% +36.96% (p=0.002 n=5+8) Memmove/256 10.2GB/s ± 0% 15.6GB/s ± 0% +53.58% (p=0.002 n=5+8) Memmove/512 14.1GB/s ± 0% 22.4GB/s ± 0% +59.57% (p=0.003 n=5+7) Memmove/1024 14.6GB/s ± 0% 27.9GB/s ±10% +91.00% (p=0.002 n=5+8) Memmove/2048 16.9GB/s ± 0% 33.4GB/s ± 0% +98.32% (p=0.003 n=5+7) Memmove/4096 18.3GB/s ± 0% 33.9GB/s ± 0% +85.80% (p=0.002 n=5+8) MemmoveUnalignedDst/1 101MB/s ± 1% 100MB/s ± 0% ~ (p=0.586 n=5+8) MemmoveUnalignedDst/2 189MB/s ± 0% 192MB/s ± 0% +1.82% (p=0.002 n=5+8) MemmoveUnalignedDst/3 278MB/s ± 0% 288MB/s ± 0% +3.88% (p=0.003 n=5+7) MemmoveUnalignedDst/4 368MB/s ± 0% 387MB/s ± 0% +5.41% (p=0.003 n=5+7) MemmoveUnalignedDst/5 434MB/s ± 0% 484MB/s ± 0% +11.52% (p=0.002 n=5+8) MemmoveUnalignedDst/6 454MB/s ± 0% 580MB/s ± 0% +27.62% (p=0.002 n=5+8) MemmoveUnalignedDst/7 509MB/s ± 0% 677MB/s ± 0% +33.01% (p=0.002 n=5+8) MemmoveUnalignedDst/8 792MB/s ± 0% 770MB/s ± 0% -2.77% (p=0.002 n=5+8) MemmoveUnalignedDst/9 841MB/s ± 0% 866MB/s ± 0% +2.92% (p=0.002 n=5+8) MemmoveUnalignedDst/10 896MB/s ± 0% 962MB/s ± 0% +7.35% (p=0.003 n=5+7) MemmoveUnalignedDst/11 947MB/s ± 0% 1058MB/s ± 0% +11.80% (p=0.002 n=5+8) MemmoveUnalignedDst/12 962MB/s ± 2% 1154MB/s ± 0% +19.97% (p=0.002 n=5+8) MemmoveUnalignedDst/13 947MB/s ± 0% 1251MB/s ± 0% +32.08% (p=0.002 n=5+8) MemmoveUnalignedDst/14 1.00GB/s ± 0% 1.35GB/s ± 0% +34.55% (p=0.002 n=5+8) MemmoveUnalignedDst/15 1.03GB/s ± 0% 1.44GB/s ± 0% +40.50% (p=0.002 n=5+8) MemmoveUnalignedDst/16 1.53GB/s ± 0% 1.54GB/s ± 0% +0.77% (p=0.002 n=5+8) MemmoveUnalignedDst/32 2.58GB/s ± 0% 2.75GB/s ± 0% +6.52% (p=0.003 n=5+7) MemmoveUnalignedDst/64 4.21GB/s ± 0% 5.19GB/s ± 0% +23.40% (p=0.004 n=5+6) MemmoveUnalignedDst/128 6.86GB/s ± 0% 8.42GB/s ± 0% +22.78% (p=0.003 n=5+7) MemmoveUnalignedDst/256 10.2GB/s ± 0% 13.8GB/s ± 0% +35.15% (p=0.002 n=5+8) MemmoveUnalignedDst/512 13.5GB/s ± 0% 21.0GB/s ± 0% +54.90% (p=0.002 n=5+8) MemmoveUnalignedDst/1024 13.7GB/s ± 0% 25.3GB/s ± 0% +84.61% (p=0.003 n=5+7) MemmoveUnalignedDst/2048 15.3GB/s ± 0% 27.5GB/s ± 0% +79.52% (p=0.002 n=5+8) MemmoveUnalignedDst/4096 16.5GB/s ± 0% 28.9GB/s ± 0% +74.74% (p=0.002 n=5+8) MemmoveUnalignedSrc/1 102MB/s ± 0% 100MB/s ± 0% -2.02% (p=0.000 n=5+7) MemmoveUnalignedSrc/2 191MB/s ± 0% 200MB/s ± 0% +4.78% (p=0.002 n=5+8) MemmoveUnalignedSrc/3 279MB/s ± 0% 300MB/s ± 0% +7.45% (p=0.002 n=5+8) MemmoveUnalignedSrc/4 354MB/s ± 0% 400MB/s ± 0% +13.10% (p=0.002 n=5+8) MemmoveUnalignedSrc/5 431MB/s ± 0% 500MB/s ± 0% +16.02% (p=0.002 n=5+8) MemmoveUnalignedSrc/6 441MB/s ± 0% 600MB/s ± 0% +36.03% (p=0.002 n=5+8) MemmoveUnalignedSrc/7 485MB/s ± 0% 700MB/s ± 0% +44.29% (p=0.002 n=5+8) MemmoveUnalignedSrc/8 811MB/s ± 1% 800MB/s ± 0% -1.36% (p=0.016 n=5+8) MemmoveUnalignedSrc/9 864MB/s ± 0% 900MB/s ± 0% +4.07% (p=0.002 n=5+8) MemmoveUnalignedSrc/10 893MB/s ± 0% 999MB/s ± 0% +11.97% (p=0.002 n=5+8) MemmoveUnalignedSrc/11 932MB/s ± 0% 1099MB/s ± 0% +18.01% (p=0.002 n=5+8) MemmoveUnalignedSrc/12 988MB/s ± 0% 1199MB/s ± 0% +21.35% (p=0.002 n=5+8) MemmoveUnalignedSrc/13 955MB/s ± 0% 1299MB/s ± 0% +36.02% (p=0.002 n=5+8) MemmoveUnalignedSrc/14 955MB/s ± 0% 1399MB/s ± 0% +46.52% (p=0.002 n=5+8) MemmoveUnalignedSrc/15 1.04GB/s ± 0% 1.50GB/s ± 0% +44.18% (p=0.002 n=5+8) MemmoveUnalignedSrc/16 1.45GB/s ± 0% 1.60GB/s ± 0% +10.14% (p=0.002 n=5+8) MemmoveUnalignedSrc/32 2.78GB/s ± 0% 3.20GB/s ± 0% +15.16% (p=0.003 n=5+7) MemmoveUnalignedSrc/64 4.30GB/s ± 0% 5.72GB/s ± 0% +32.90% (p=0.003 n=5+7) MemmoveUnalignedSrc/128 6.57GB/s ± 0% 8.42GB/s ± 0% +28.06% (p=0.002 n=5+8) MemmoveUnalignedSrc/256 9.39GB/s ± 1% 13.33GB/s ± 0% +41.96% (p=0.002 n=5+8) MemmoveUnalignedSrc/512 12.7GB/s ± 0% 18.8GB/s ± 0% +48.53% (p=0.003 n=5+7) MemmoveUnalignedSrc/1024 13.6GB/s ± 0% 23.0GB/s ± 0% +69.82% (p=0.002 n=5+8) MemmoveUnalignedSrc/2048 15.6GB/s ± 0% 26.8GB/s ± 3% +71.37% (p=0.002 n=5+8) MemmoveUnalignedSrc/4096 16.5GB/s ± 0% 28.2GB/s ± 0% +71.40% (p=0.002 n=5+8) Fixes #22925 Change-Id: I38c1a9ad5c6e3f4f95fc521c4b7e3140b58b4737 Reviewed-on: https://go-review.googlesource.com/83799 Run-TryBot: Cherry Zhang <cherryyz@google.com> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
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Josh Bleecher Snyder
|
7365fac2db |
runtime: use bytes.IndexByte in findnull
bytes.IndexByte is heavily optimized. Use it in findnull. name old time/op new time/op delta GoString-8 65.5ns ± 1% 40.2ns ± 1% -38.62% (p=0.000 n=19+19) findnull is also used in gostringnocopy, which is used in many hot spots in the runtime. Fixes #23830 Change-Id: I2e6cb279c7d8078f8844065de684cc3567fe89d7 Reviewed-on: https://go-review.googlesource.com/97523 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Chad Rosier
|
39fefa0709 |
cmd/compile/internal/ssa: combine consecutive BigEndian stores on arm64
This optimization mirrors that which is already implemented for AMD64. The optimization specifically targets the binary.BigEndian.PutUint* functions. encoding-binary results on Amberwing: name old time/op new time/op delta ReadSlice1000Int32s 9.83µs ± 2% 9.78µs ± 1% ~ (p=0.362 n=9+10) ReadStruct 5.24µs ± 3% 5.19µs ± 2% ~ (p=0.285 n=10+10) ReadInts 8.35µs ± 8% 8.44µs ± 3% ~ (p=0.323 n=10+10) WriteInts 3.38µs ± 3% 3.44µs ±15% ~ (p=0.921 n=9+10) WriteSlice1000Int32s 11.4µs ± 6% 10.2µs ± 4% -9.94% (p=0.000 n=10+10) PutUint16 510ns ±12% 500ns ± 0% ~ (p=0.586 n=10+7) PutUint32 530ns ±15% 490ns ±12% ~ (p=0.086 n=10+10) PutUint64 550ns ± 0% 470ns ± 6% -14.52% (p=0.000 n=7+10) LittleEndianPutUint16 500ns ± 0% 475ns ±16% ~ (p=0.120 n=7+10) LittleEndianPutUint32 450ns ± 0% 517ns ±16% +14.81% (p=0.004 n=8+9) LittleEndianPutUint64 550ns ± 0% 485ns ±13% -11.82% (p=0.000 n=8+10) PutUvarint32 685ns ±12% 622ns ± 4% -9.17% (p=0.005 n=10+9) PutUvarint64 735ns ± 9% 711ns ± 9% ~ (p=0.272 n=10+9) [Geo mean] 1.47µs 1.42µs -3.87% name old speed new speed delta ReadSlice1000Int32s 407MB/s ± 2% 409MB/s ± 1% ~ (p=0.362 n=9+10) ReadStruct 14.3MB/s ± 3% 14.4MB/s ± 2% ~ (p=0.250 n=10+10) ReadInts 3.59MB/s ± 7% 3.56MB/s ± 4% ~ (p=0.340 n=10+10) WriteInts 8.87MB/s ± 3% 8.74MB/s ±13% ~ (p=0.890 n=9+10) WriteSlice1000Int32s 352MB/s ± 6% 391MB/s ± 4% +11.03% (p=0.000 n=10+10) PutUint16 3.95MB/s ±13% 4.00MB/s ± 0% ~ (p=0.312 n=10+7) PutUint32 7.62MB/s ±17% 8.21MB/s ±11% ~ (p=0.086 n=10+10) PutUint64 14.6MB/s ± 0% 17.1MB/s ± 6% +17.28% (p=0.000 n=7+10) LittleEndianPutUint16 4.00MB/s ± 0% 4.23MB/s ±18% ~ (p=0.176 n=7+10) LittleEndianPutUint32 8.89MB/s ± 0% 7.64MB/s ±20% -14.05% (p=0.001 n=8+10) LittleEndianPutUint64 14.6MB/s ± 0% 16.6MB/s ±12% +13.86% (p=0.000 n=8+10) PutUvarint32 5.86MB/s ±14% 6.44MB/s ± 5% +9.84% (p=0.006 n=10+9) PutUvarint64 10.9MB/s ± 8% 11.3MB/s ± 9% ~ (p=0.373 n=10+9) [Geo mean] 14.2MB/s 14.8MB/s +3.93% go1 results on Amberwing: RegexpMatchEasy0_32 254ns ± 0% 254ns ± 0% ~ (all equal) RegexpMatchEasy0_1K 547ns ± 0% 547ns ± 0% ~ (all equal) RegexpMatchEasy1_32 252ns ± 0% 253ns ± 1% ~ (p=0.294 n=8+10) RegexpMatchEasy1_1K 782ns ± 0% 783ns ± 1% ~ (p=0.529 n=8+9) RegexpMatchMedium_32 316ns ± 0% 316ns ± 0% ~ (all equal) RegexpMatchMedium_1K 51.5µs ± 0% 51.5µs ± 0% ~ (p=0.645 n=10+9) RegexpMatchHard_32 2.75µs ± 0% 2.75µs ± 0% ~ (all equal) RegexpMatchHard_1K 78.7µs ± 0% 78.7µs ± 0% ~ (p=0.754 n=10+10) FmtFprintfEmpty 57.0ns ± 0% 57.0ns ± 0% ~ (all equal) FmtFprintfString 111ns ± 0% 111ns ± 0% ~ (all equal) FmtFprintfInt 114ns ± 0% 114ns ± 1% ~ (p=0.065 n=9+10) FmtFprintfIntInt 182ns ± 0% 178ns ± 0% -2.20% (p=0.000 n=10+10) FmtFprintfPrefixedInt 225ns ± 0% 227ns ± 0% +0.89% (p=0.000 n=10+10) FmtFprintfFloat 307ns ± 0% 307ns ± 0% ~ (p=1.000 n=9+9) FmtManyArgs 697ns ± 0% 701ns ± 2% ~ (p=0.108 n=9+10) Gzip 436ms ± 0% 437ms ± 0% +0.23% (p=0.000 n=10+8) HTTPClientServer 88.8µs ± 2% 89.6µs ± 1% +0.98% (p=0.019 n=10+10) JSONEncode 20.1ms ± 1% 20.2ms ± 1% +0.48% (p=0.007 n=10+10) JSONDecode 94.7ms ± 1% 94.1ms ± 0% -0.62% (p=0.000 n=10+9) GobDecode 12.6ms ± 2% 12.6ms ± 1% ~ (p=0.360 n=10+8) GobEncode 12.0ms ± 1% 11.9ms ± 1% -1.34% (p=0.000 n=10+10) Mandelbrot200 5.05ms ± 0% 5.05ms ± 0% +0.12% (p=0.000 n=10+10) TimeParse 448ns ± 0% 448ns ± 0% ~ (p=0.529 n=8+9) TimeFormat 501ns ± 1% 501ns ± 1% ~ (p=1.000 n=10+9) Template 90.6ms ± 0% 89.1ms ± 0% -1.67% (p=0.000 n=9+9) GoParse 6.01ms ± 0% 5.96ms ± 0% -0.83% (p=0.000 n=10+9) BinaryTree17 11.7s ± 0% 11.7s ± 0% ~ (p=0.481 n=10+10) Revcomp 675ms ± 0% 675ms ± 0% ~ (p=0.436 n=9+9) Fannkuch11 3.26s ± 0% 3.27s ± 1% +0.57% (p=0.000 n=10+10) [Geo mean] 67.4µs 67.3µs -0.10% name old speed new speed delta RegexpMatchEasy0_32 126MB/s ± 0% 126MB/s ± 0% ~ (p=0.353 n=10+7) RegexpMatchEasy0_1K 1.87GB/s ± 0% 1.87GB/s ± 0% ~ (p=0.275 n=8+10) RegexpMatchEasy1_32 127MB/s ± 0% 126MB/s ± 1% ~ (p=0.110 n=8+10) RegexpMatchEasy1_1K 1.31GB/s ± 0% 1.31GB/s ± 1% ~ (p=0.079 n=8+10) RegexpMatchMedium_32 3.16MB/s ± 0% 3.16MB/s ± 0% ~ (all equal) RegexpMatchMedium_1K 19.9MB/s ± 0% 19.9MB/s ± 0% ~ (p=0.889 n=10+9) RegexpMatchHard_32 11.7MB/s ± 0% 11.7MB/s ± 0% ~ (all equal) RegexpMatchHard_1K 13.0MB/s ± 0% 13.0MB/s ± 0% ~ (p=1.000 n=10+10) Gzip 44.5MB/s ± 0% 44.4MB/s ± 0% -0.22% (p=0.000 n=10+8) JSONEncode 96.6MB/s ± 1% 96.1MB/s ± 1% -0.48% (p=0.007 n=10+10) JSONDecode 20.5MB/s ± 1% 20.6MB/s ± 0% +0.63% (p=0.000 n=10+9) GobDecode 61.0MB/s ± 2% 61.1MB/s ± 1% ~ (p=0.372 n=10+8) GobEncode 63.8MB/s ± 1% 64.7MB/s ± 1% +1.36% (p=0.000 n=10+10) Template 21.4MB/s ± 0% 21.8MB/s ± 0% +1.69% (p=0.000 n=9+9) GoParse 9.63MB/s ± 0% 9.71MB/s ± 0% +0.84% (p=0.000 n=9+8) Revcomp 377MB/s ± 0% 376MB/s ± 0% ~ (p=0.399 n=9+9) [Geo mean] 56.2MB/s 56.3MB/s +0.20% Change-Id: Ic915373f5ef512f9fbc45745860e5db7f6de6286 Reviewed-on: https://go-review.googlesource.com/97755 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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Ilya Tocar
|
93665c0d81 |
crypto: remove hand encoded amd64 instructions
Replace BYTE.. encodings with asm. This is possible due to asm implementing more instructions and removal of MOV $0, reg -> XOR reg, reg transformation from asm. Change-Id: I011749ab6b3f64403ab6e746f3760c5841548b57 Reviewed-on: https://go-review.googlesource.com/97936 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Pascal S. de Kloe
|
5d11838654 |
encoding/json: read ahead after value consumption
Eliminates the need for an extra scanner, read undo and some other tricks. name old time/op new time/op delta CodeEncoder-12 1.92ms ± 0% 1.91ms ± 1% -0.65% (p=0.000 n=17+20) CodeMarshal-12 2.13ms ± 2% 2.12ms ± 1% -0.49% (p=0.038 n=18+17) CodeDecoder-12 8.55ms ± 2% 8.49ms ± 1% ~ (p=0.119 n=20+18) UnicodeDecoder-12 411ns ± 0% 422ns ± 0% +2.77% (p=0.000 n=19+15) DecoderStream-12 320ns ± 1% 307ns ± 1% -3.80% (p=0.000 n=18+20) CodeUnmarshal-12 9.65ms ± 3% 9.58ms ± 3% ~ (p=0.157 n=20+20) CodeUnmarshalReuse-12 8.54ms ± 3% 8.56ms ± 2% ~ (p=0.602 n=20+20) UnmarshalString-12 110ns ± 1% 87ns ± 2% -21.53% (p=0.000 n=16+20) UnmarshalFloat64-12 101ns ± 1% 77ns ± 2% -23.08% (p=0.000 n=19+20) UnmarshalInt64-12 94.5ns ± 2% 68.4ns ± 1% -27.60% (p=0.000 n=20+20) Issue10335-12 128ns ± 1% 100ns ± 1% -21.89% (p=0.000 n=19+18) Unmapped-12 427ns ± 3% 247ns ± 4% -42.17% (p=0.000 n=20+20) NumberIsValid-12 23.0ns ± 0% 21.7ns ± 0% -5.73% (p=0.000 n=20+20) NumberIsValidRegexp-12 641ns ± 0% 642ns ± 0% +0.15% (p=0.003 n=19+19) EncoderEncode-12 56.9ns ± 0% 55.0ns ± 1% -3.32% (p=0.012 n=2+17) name old speed new speed delta CodeEncoder-12 1.01GB/s ± 1% 1.02GB/s ± 1% +0.71% (p=0.000 n=18+20) CodeMarshal-12 913MB/s ± 2% 917MB/s ± 1% +0.49% (p=0.038 n=18+17) CodeDecoder-12 227MB/s ± 2% 229MB/s ± 1% ~ (p=0.110 n=20+18) UnicodeDecoder-12 34.1MB/s ± 0% 33.1MB/s ± 0% -2.73% (p=0.000 n=19+19) CodeUnmarshal-12 201MB/s ± 3% 203MB/s ± 3% ~ (p=0.151 n=20+20) name old alloc/op new alloc/op delta Issue10335-12 320B ± 0% 184B ± 0% -42.50% (p=0.000 n=20+20) Unmapped-12 568B ± 0% 216B ± 0% -61.97% (p=0.000 n=20+20) EncoderEncode-12 0.00B 0.00B ~ (all equal) name old allocs/op new allocs/op delta Issue10335-12 4.00 ± 0% 3.00 ± 0% -25.00% (p=0.000 n=20+20) Unmapped-12 18.0 ± 0% 4.0 ± 0% -77.78% (p=0.000 n=20+20) EncoderEncode-12 0.00 0.00 ~ (all equal) Fixes #17914 Updates #20693 Updates #10335 Change-Id: I0459a52febb8b79c9a2991e69ed2614cf8740429 Reviewed-on: https://go-review.googlesource.com/47152 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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|
Ilya Tocar
|
c15984c6c6 |
math: remove unused variable
useSSE41 was used inside asm implementation of floor to select between base and ss4 code path. We intrinsified floor and left asm functions as a backup for non-sse4 systems. This made variable unused, so remove it. Change-Id: Ia2633de7c7cb1ef1d5b15a2366b523e481b722d9 Reviewed-on: https://go-review.googlesource.com/97935 Run-TryBot: Ilya Tocar <ilya.tocar@intel.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Hana Kim
|
e75f805e6f |
runtime/trace: skip TestUserTaskSpan upon timestamp error
Change-Id: I030baaa0a0abf1e43449faaf676d389a28a868a3 Reviewed-on: https://go-review.googlesource.com/97857 Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com> Reviewed-by: Peter Weinberger <pjw@google.com> |
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Giovanni Bajo
|
f16cc298d3 |
test: implement negative rules in asmcheck
Change-Id: I2b507e35cc314100eaf2ec2d1e5107cc2fc9e7cf Reviewed-on: https://go-review.googlesource.com/97818 Reviewed-by: Keith Randall <khr@golang.org> |
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|
Giovanni Bajo
|
0bcf8bcd99 |
test: in asmcheck, regexp must match from beginning of line
This avoid simple bugs like "ADD" matching "FADD". Obviously "ADD" will still match "ADDQ" so some care is still required in this regard, but at least a first class of possible errors is taken care of. Change-Id: I7deb04c31de30bedac9c026d9889ace4a1d2adcb Reviewed-on: https://go-review.googlesource.com/97817 Reviewed-by: Giovanni Bajo <rasky@develer.com> Reviewed-by: Keith Randall <khr@golang.org> |
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Giovanni Bajo
|
879a1ff1e4 |
test: improve asmcheck syntax
asmcheck comments now support a compact form of specifying
multiple checks for each platform, using the following syntax:
amd64:"SHL\t[$]4","SHR\t[$]4"
Negative checks are also parsed using the following syntax:
amd64:-"ROR"
though they are still not working.
Moreover, out-of-line comments have been implemented. This
allows to specify asmchecks on comment-only lines, that will
be matched on the first subsequent non-comment non-empty line.
// amd64:"XOR"
// arm:"EOR"
x ^= 1
Change-Id: I110c7462fc6a5c70fd4af0d42f516016ae7f2760
Reviewed-on: https://go-review.googlesource.com/97816
Reviewed-by: Keith Randall <khr@golang.org>
|
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Josh Bleecher Snyder
|
9372e3f5ef |
runtime: don't allocate to build strings of length 1
Use staticbytes instead. Instrumenting make.bash shows approx 0.5% of all slicebytetostrings have a buffer of length 1. name old time/op new time/op delta SliceByteToString/1-8 14.1ns ± 1% 4.1ns ± 1% -71.13% (p=0.000 n=17+20) SliceByteToString/2-8 15.5ns ± 2% 15.5ns ± 1% ~ (p=0.061 n=20+18) SliceByteToString/4-8 14.9ns ± 1% 15.0ns ± 2% +1.25% (p=0.000 n=20+20) SliceByteToString/8-8 17.1ns ± 1% 17.5ns ± 1% +2.16% (p=0.000 n=19+19) SliceByteToString/16-8 23.6ns ± 1% 23.9ns ± 1% +1.41% (p=0.000 n=20+18) SliceByteToString/32-8 26.0ns ± 1% 25.8ns ± 0% -1.05% (p=0.000 n=19+16) SliceByteToString/64-8 30.0ns ± 0% 30.2ns ± 0% +0.56% (p=0.000 n=16+18) SliceByteToString/128-8 38.9ns ± 0% 39.0ns ± 0% +0.23% (p=0.019 n=19+15) Fixes #24172 Change-Id: I3dfa14eefbf9fb4387114e20c9cb40e186abe962 Reviewed-on: https://go-review.googlesource.com/97717 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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Josh Bleecher Snyder
|
aa9c1a8f80 |
runtime: fix amd64p32 indexbytes in presence of overflow
When the slice/string length is very large, probably artifically large as in CL 97523, adding BX (length) to R11 (pointer) overflows. As a result, checking DI < R11 yields the wrong result. Since they will be equal when the loop is done, just check DI != R11 instead. Yes, the pointer itself could overflow, but if that happens, something else has gone pretty wrong; not our concern here. Fixes #24187 Change-Id: I2f60fc6ccae739345d01bc80528560726ad4f8c6 Reviewed-on: https://go-review.googlesource.com/97802 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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|
Chad Rosier
|
77ba071ec6 |
cmd/compile/internal/ssa: combine consecutive LittleEndian stores on arm64
This optimization mirrors that which is already implemented for AMD64. The optimization specifically targets the binary.LittleEndian.PutUint* functions. encoding/binary results on Amberwing: name old time/op new time/op delta ReadSlice1000Int32s 9.67µs ± 1% 9.64µs ± 1% ~ (p=0.185 n=9+9) ReadStruct 5.24µs ± 2% 5.36µs ± 2% +2.24% (p=0.002 n=10+8) ReadInts 8.69µs ± 5% 8.88µs ± 5% ~ (p=0.083 n=10+10) WriteInts 3.90µs ±10% 3.71µs ± 9% ~ (p=0.077 n=10+10) WriteSlice1000Int32s 10.9µs ± 1% 10.9µs ± 1% ~ (p=0.701 n=9+9) PutUint16 572ns ±14% 505ns ±11% -11.75% (p=0.006 n=9+10) PutUint32 550ns ±18% 540ns ±11% ~ (p=0.692 n=10+10) PutUint64 565ns ±15% 540ns ±17% ~ (p=0.248 n=10+10) LittleEndianPutUint16 540ns ±11% 500ns ±10% ~ (p=0.094 n=10+10) LittleEndianPutUint32 520ns ±15% 480ns ±15% ~ (p=0.087 n=10+10) LittleEndianPutUint64 505ns ±29% 470ns ±17% ~ (p=0.208 n=10+10) PutUvarint32 700ns ±21% 635ns ±10% -9.29% (p=0.028 n=10+10) PutUvarint64 740ns ± 8% 740ns ± 8% ~ (p=0.713 n=10+10) [Geo mean] 1.53µs 1.47µs -3.93% name old speed new speed delta ReadSlice1000Int32s 414MB/s ± 1% 415MB/s ± 1% ~ (p=0.185 n=9+9) ReadStruct 14.3MB/s ± 2% 14.0MB/s ± 2% -2.21% (p=0.000 n=10+8) ReadInts 3.45MB/s ± 4% 3.38MB/s ± 6% ~ (p=0.085 n=10+10) WriteInts 7.71MB/s ± 9% 8.09MB/s ± 8% +4.93% (p=0.048 n=10+10) WriteSlice1000Int32s 367MB/s ± 1% 366MB/s ± 1% ~ (p=0.701 n=9+9) PutUint16 3.51MB/s ±14% 3.99MB/s ±11% +13.47% (p=0.009 n=9+10) PutUint32 7.35MB/s ±21% 7.44MB/s ±10% ~ (p=0.692 n=10+10) PutUint64 14.3MB/s ±14% 15.0MB/s ±19% ~ (p=0.248 n=10+10) LittleEndianPutUint16 3.72MB/s ±11% 4.03MB/s ±10% ~ (p=0.094 n=10+10) LittleEndianPutUint32 7.75MB/s ±15% 8.39MB/s ±13% ~ (p=0.087 n=10+10) LittleEndianPutUint64 16.1MB/s ±23% 17.2MB/s ±16% ~ (p=0.208 n=10+10) PutUvarint32 5.76MB/s ±18% 6.32MB/s ±10% +9.72% (p=0.028 n=10+10) PutUvarint64 10.8MB/s ± 8% 10.8MB/s ± 8% ~ (p=0.713 n=10+10) [Geo mean] 13.7MB/s 14.3MB/s +4.02% go1 results on Amberwing: name old time/op new time/op delta RegexpMatchEasy0_32 249ns ± 0% 249ns ± 0% ~ (p=0.087 n=10+10) RegexpMatchEasy0_1K 584ns ± 0% 584ns ± 0% ~ (all equal) RegexpMatchEasy1_32 246ns ± 0% 246ns ± 0% ~ (p=1.000 n=10+10) RegexpMatchEasy1_1K 806ns ± 0% 806ns ± 0% ~ (p=0.706 n=10+9) RegexpMatchMedium_32 314ns ± 0% 314ns ± 0% ~ (all equal) RegexpMatchMedium_1K 52.1µs ± 0% 52.1µs ± 0% ~ (p=0.245 n=10+8) RegexpMatchHard_32 2.75µs ± 1% 2.75µs ± 1% ~ (p=0.690 n=10+10) RegexpMatchHard_1K 78.9µs ± 0% 78.9µs ± 1% ~ (p=0.295 n=9+9) FmtFprintfEmpty 58.5ns ± 0% 58.5ns ± 0% ~ (all equal) FmtFprintfString 112ns ± 0% 112ns ± 0% ~ (all equal) FmtFprintfInt 117ns ± 0% 116ns ± 0% -0.85% (p=0.000 n=10+10) FmtFprintfIntInt 181ns ± 0% 181ns ± 0% ~ (all equal) FmtFprintfPrefixedInt 222ns ± 0% 224ns ± 0% +0.90% (p=0.000 n=9+10) FmtFprintfFloat 318ns ± 1% 322ns ± 0% ~ (p=0.059 n=10+8) FmtManyArgs 736ns ± 1% 735ns ± 0% ~ (p=0.206 n=9+9) Gzip 437ms ± 0% 436ms ± 0% -0.25% (p=0.000 n=10+10) HTTPClientServer 89.8µs ± 1% 90.2µs ± 2% ~ (p=0.393 n=10+10) JSONEncode 20.1ms ± 1% 20.2ms ± 1% ~ (p=0.065 n=9+10) JSONDecode 94.2ms ± 1% 93.9ms ± 1% -0.42% (p=0.043 n=10+10) GobDecode 12.7ms ± 1% 12.8ms ± 2% +0.94% (p=0.019 n=10+10) GobEncode 12.1ms ± 0% 12.1ms ± 0% ~ (p=0.052 n=10+10) Mandelbrot200 5.06ms ± 0% 5.05ms ± 0% -0.04% (p=0.000 n=9+10) TimeParse 450ns ± 3% 446ns ± 0% ~ (p=0.238 n=10+9) TimeFormat 485ns ± 1% 483ns ± 1% ~ (p=0.073 n=10+10) Template 90.4ms ± 0% 90.7ms ± 0% +0.29% (p=0.000 n=8+10) GoParse 6.01ms ± 0% 6.03ms ± 0% +0.35% (p=0.000 n=10+10) BinaryTree17 11.7s ± 0% 11.7s ± 0% ~ (p=0.481 n=10+10) Revcomp 669ms ± 0% 669ms ± 0% ~ (p=0.315 n=10+10) Fannkuch11 3.40s ± 0% 3.37s ± 0% -0.92% (p=0.000 n=10+10) [Geo mean] 67.9µs 67.9µs +0.02% name old speed new speed delta RegexpMatchEasy0_32 128MB/s ± 0% 128MB/s ± 0% -0.08% (p=0.003 n=8+10) RegexpMatchEasy0_1K 1.75GB/s ± 0% 1.75GB/s ± 0% ~ (p=0.642 n=8+10) RegexpMatchEasy1_32 130MB/s ± 0% 130MB/s ± 0% ~ (p=0.690 n=10+9) RegexpMatchEasy1_1K 1.27GB/s ± 0% 1.27GB/s ± 0% ~ (p=0.661 n=10+9) RegexpMatchMedium_32 3.18MB/s ± 0% 3.18MB/s ± 0% ~ (all equal) RegexpMatchMedium_1K 19.7MB/s ± 0% 19.6MB/s ± 0% ~ (p=0.190 n=10+9) RegexpMatchHard_32 11.6MB/s ± 0% 11.6MB/s ± 1% ~ (p=0.669 n=10+10) RegexpMatchHard_1K 13.0MB/s ± 0% 13.0MB/s ± 0% ~ (p=0.718 n=9+9) Gzip 44.4MB/s ± 0% 44.5MB/s ± 0% +0.24% (p=0.000 n=10+10) JSONEncode 96.5MB/s ± 1% 96.1MB/s ± 1% ~ (p=0.065 n=9+10) JSONDecode 20.6MB/s ± 1% 20.7MB/s ± 1% +0.42% (p=0.041 n=10+10) GobDecode 60.6MB/s ± 1% 60.0MB/s ± 2% -0.92% (p=0.016 n=10+10) GobEncode 63.4MB/s ± 0% 63.6MB/s ± 0% ~ (p=0.055 n=10+10) Template 21.5MB/s ± 0% 21.4MB/s ± 0% -0.30% (p=0.000 n=9+10) GoParse 9.64MB/s ± 0% 9.61MB/s ± 0% -0.36% (p=0.000 n=10+10) Revcomp 380MB/s ± 0% 380MB/s ± 0% ~ (p=0.323 n=10+10) [Geo mean] 56.0MB/s 55.9MB/s -0.07% Change-Id: I79a4978d42d01a5f72ed5ceec07f5e78ac6b3859 Reviewed-on: https://go-review.googlesource.com/97175 Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Cherry Zhang <cherryyz@google.com> |
||
Wei Xiao
|
562346b7d0 |
bytes: add asm version of Index for short strings on arm64
Currently we have special case for 1-byte strings, this extends it to strings shorter than 9 bytes on arm64. Benchmark results: name old time/op new time/op delta IndexByte/10-32 18.6ns ± 0% 18.1ns ± 0% -2.69% (p=0.008 n=5+5) IndexByte/32-32 16.8ns ± 1% 16.9ns ± 1% ~ (p=0.762 n=5+5) IndexByte/4K-32 464ns ± 0% 464ns ± 0% ~ (all equal) IndexByte/4M-32 528µs ± 1% 506µs ± 1% -4.17% (p=0.008 n=5+5) IndexByte/64M-32 18.7ms ± 0% 18.7ms ± 1% ~ (p=0.730 n=4+5) IndexBytePortable/10-32 33.8ns ± 0% 34.9ns ± 3% ~ (p=0.167 n=5+5) IndexBytePortable/32-32 65.3ns ± 0% 66.1ns ± 2% ~ (p=0.444 n=5+5) IndexBytePortable/4K-32 5.88µs ± 0% 5.88µs ± 0% ~ (p=0.325 n=5+5) IndexBytePortable/4M-32 6.03ms ± 0% 6.03ms ± 0% ~ (p=1.000 n=5+5) IndexBytePortable/64M-32 98.8ms ± 0% 98.9ms ± 0% +0.10% (p=0.008 n=5+5) IndexRune/10-32 57.7ns ± 0% 49.2ns ± 0% -14.73% (p=0.000 n=5+4) IndexRune/32-32 57.7ns ± 0% 58.6ns ± 0% +1.56% (p=0.008 n=5+5) IndexRune/4K-32 511ns ± 0% 513ns ± 0% +0.39% (p=0.008 n=5+5) IndexRune/4M-32 527µs ± 1% 527µs ± 1% ~ (p=0.690 n=5+5) IndexRune/64M-32 18.7ms ± 0% 18.7ms ± 1% ~ (p=0.190 n=4+5) IndexRuneASCII/10-32 23.8ns ± 0% 23.8ns ± 0% ~ (all equal) IndexRuneASCII/32-32 24.3ns ± 0% 24.3ns ± 0% ~ (all equal) IndexRuneASCII/4K-32 468ns ± 0% 468ns ± 0% ~ (all equal) IndexRuneASCII/4M-32 521µs ± 1% 531µs ± 2% +1.91% (p=0.016 n=5+5) IndexRuneASCII/64M-32 18.6ms ± 1% 18.5ms ± 0% ~ (p=0.730 n=5+4) Index/10-32 89.1ns ±13% 25.2ns ± 0% -71.72% (p=0.008 n=5+5) Index/32-32 225ns ± 2% 226ns ± 3% ~ (p=0.683 n=5+5) Index/4K-32 11.9µs ± 0% 11.8µs ± 0% -0.22% (p=0.008 n=5+5) Index/4M-32 12.1ms ± 0% 12.1ms ± 0% ~ (p=0.548 n=5+5) Index/64M-32 197ms ± 0% 197ms ± 0% ~ (p=0.690 n=5+5) IndexEasy/10-32 46.2ns ± 0% 22.1ns ± 8% -52.16% (p=0.008 n=5+5) IndexEasy/32-32 46.2ns ± 0% 47.2ns ± 0% +2.16% (p=0.008 n=5+5) IndexEasy/4K-32 499ns ± 0% 502ns ± 0% +0.44% (p=0.008 n=5+5) IndexEasy/4M-32 529µs ± 2% 529µs ± 1% ~ (p=0.841 n=5+5) IndexEasy/64M-32 18.6ms ± 1% 18.7ms ± 1% ~ (p=0.222 n=5+5) IndexAnyASCII/1:1-32 15.7ns ± 0% 15.7ns ± 0% ~ (all equal) IndexAnyASCII/1:2-32 17.2ns ± 0% 17.2ns ± 0% ~ (all equal) IndexAnyASCII/1:4-32 20.0ns ± 0% 20.0ns ± 0% ~ (all equal) IndexAnyASCII/1:8-32 34.8ns ± 0% 34.8ns ± 0% ~ (all equal) IndexAnyASCII/1:16-32 48.1ns ± 0% 48.1ns ± 0% ~ (all equal) IndexAnyASCII/16:1-32 97.9ns ± 1% 97.7ns ± 0% ~ (p=0.857 n=5+5) IndexAnyASCII/16:2-32 102ns ± 0% 102ns ± 0% ~ (all equal) IndexAnyASCII/16:4-32 116ns ± 1% 116ns ± 1% ~ (p=1.000 n=5+5) IndexAnyASCII/16:8-32 141ns ± 1% 141ns ± 0% ~ (p=0.571 n=5+4) IndexAnyASCII/16:16-32 178ns ± 0% 178ns ± 0% ~ (all equal) IndexAnyASCII/256:1-32 1.09µs ± 0% 1.09µs ± 0% ~ (all equal) IndexAnyASCII/256:2-32 1.09µs ± 0% 1.10µs ± 0% +0.27% (p=0.008 n=5+5) IndexAnyASCII/256:4-32 1.11µs ± 0% 1.11µs ± 0% ~ (p=0.397 n=5+5) IndexAnyASCII/256:8-32 1.10µs ± 0% 1.10µs ± 0% ~ (p=0.444 n=5+5) IndexAnyASCII/256:16-32 1.14µs ± 0% 1.14µs ± 0% ~ (all equal) IndexAnyASCII/4096:1-32 16.5µs ± 0% 16.5µs ± 0% ~ (p=1.000 n=5+5) IndexAnyASCII/4096:2-32 17.0µs ± 0% 17.0µs ± 0% ~ (p=0.159 n=5+4) IndexAnyASCII/4096:4-32 17.1µs ± 0% 17.1µs ± 0% ~ (p=0.921 n=4+5) IndexAnyASCII/4096:8-32 16.5µs ± 0% 16.5µs ± 0% ~ (p=0.460 n=5+5) IndexAnyASCII/4096:16-32 16.5µs ± 0% 16.5µs ± 0% ~ (p=0.794 n=5+4) IndexPeriodic/IndexPeriodic2-32 189µs ± 0% 189µs ± 0% ~ (p=0.841 n=5+5) IndexPeriodic/IndexPeriodic4-32 189µs ± 0% 189µs ± 0% -0.03% (p=0.016 n=5+4) IndexPeriodic/IndexPeriodic8-32 189µs ± 0% 189µs ± 0% ~ (p=0.651 n=5+5) IndexPeriodic/IndexPeriodic16-32 175µs ± 9% 174µs ± 7% ~ (p=1.000 n=5+5) IndexPeriodic/IndexPeriodic32-32 75.1µs ± 0% 75.1µs ± 0% ~ (p=0.690 n=5+5) IndexPeriodic/IndexPeriodic64-32 42.6µs ± 0% 44.7µs ± 0% +4.98% (p=0.008 n=5+5) name old speed new speed delta IndexByte/10-32 538MB/s ± 0% 552MB/s ± 0% +2.65% (p=0.008 n=5+5) IndexByte/32-32 1.90GB/s ± 1% 1.90GB/s ± 1% ~ (p=0.548 n=5+5) IndexByte/4K-32 8.82GB/s ± 0% 8.81GB/s ± 0% ~ (p=0.548 n=5+5) IndexByte/4M-32 7.95GB/s ± 1% 8.29GB/s ± 1% +4.35% (p=0.008 n=5+5) IndexByte/64M-32 3.58GB/s ± 0% 3.60GB/s ± 1% ~ (p=0.730 n=4+5) IndexBytePortable/10-32 296MB/s ± 0% 286MB/s ± 3% ~ (p=0.381 n=4+5) IndexBytePortable/32-32 490MB/s ± 0% 485MB/s ± 2% ~ (p=0.286 n=5+5) IndexBytePortable/4K-32 697MB/s ± 0% 697MB/s ± 0% ~ (p=0.413 n=5+5) IndexBytePortable/4M-32 696MB/s ± 0% 695MB/s ± 0% ~ (p=0.897 n=5+5) IndexBytePortable/64M-32 679MB/s ± 0% 678MB/s ± 0% -0.10% (p=0.008 n=5+5) IndexRune/10-32 173MB/s ± 0% 203MB/s ± 0% +17.24% (p=0.016 n=5+4) IndexRune/32-32 555MB/s ± 0% 546MB/s ± 0% -1.62% (p=0.008 n=5+5) IndexRune/4K-32 8.01GB/s ± 0% 7.98GB/s ± 0% -0.38% (p=0.008 n=5+5) IndexRune/4M-32 7.97GB/s ± 1% 7.95GB/s ± 1% ~ (p=0.690 n=5+5) IndexRune/64M-32 3.59GB/s ± 0% 3.58GB/s ± 1% ~ (p=0.190 n=4+5) IndexRuneASCII/10-32 420MB/s ± 0% 420MB/s ± 0% ~ (p=0.190 n=5+4) IndexRuneASCII/32-32 1.32GB/s ± 0% 1.32GB/s ± 0% ~ (p=0.333 n=5+5) IndexRuneASCII/4K-32 8.75GB/s ± 0% 8.75GB/s ± 0% ~ (p=0.690 n=5+5) IndexRuneASCII/4M-32 8.04GB/s ± 1% 7.89GB/s ± 2% -1.87% (p=0.016 n=5+5) IndexRuneASCII/64M-32 3.61GB/s ± 1% 3.62GB/s ± 0% ~ (p=0.730 n=5+4) Index/10-32 113MB/s ±14% 397MB/s ± 0% +249.76% (p=0.008 n=5+5) Index/32-32 142MB/s ± 2% 141MB/s ± 3% ~ (p=0.794 n=5+5) Index/4K-32 345MB/s ± 0% 346MB/s ± 0% +0.22% (p=0.008 n=5+5) Index/4M-32 345MB/s ± 0% 345MB/s ± 0% ~ (p=0.619 n=5+5) Index/64M-32 341MB/s ± 0% 341MB/s ± 0% ~ (p=0.595 n=5+5) IndexEasy/10-32 216MB/s ± 0% 453MB/s ± 8% +109.60% (p=0.008 n=5+5) IndexEasy/32-32 692MB/s ± 0% 678MB/s ± 0% -2.01% (p=0.008 n=5+5) IndexEasy/4K-32 8.19GB/s ± 0% 8.16GB/s ± 0% -0.45% (p=0.008 n=5+5) IndexEasy/4M-32 7.93GB/s ± 2% 7.93GB/s ± 1% ~ (p=0.841 n=5+5) IndexEasy/64M-32 3.60GB/s ± 1% 3.59GB/s ± 1% ~ (p=0.222 n=5+5) Change-Id: I4ca69378a2df6f9ba748c6a2706953ee1bd07343 Reviewed-on: https://go-review.googlesource.com/96555 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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Marcel van Lohuizen
|
4c1aff87f1 |
testing: gracefully handle subtest failing parent’s T
Don’t panic if a subtest inadvertently calls FailNow on a parent’s T. Instead, report the offending subtest while still reporting the error with the ancestor test and keep exiting goroutines. Note that this implementation has a race if parallel subtests are failing the parent concurrently. This is fine: Calling FailNow on a parent is considered an error in principle, at the moment, and is reported if it is detected. Having the race allows the race detector to detect the error as well. Fixes #22882 Change-Id: Ifa6d5e55bb88f6bcbb562fc8c99f1f77e320015a Reviewed-on: https://go-review.googlesource.com/97635 Run-TryBot: Marcel van Lohuizen <mpvl@golang.org> Reviewed-by: Kunpei Sakai <namusyaka@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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|
Giovanni Bajo
|
c9438cb198 |
test: add support for code generation tests (asmcheck)
The top-level test harness is modified to support a new kind of test: "asmcheck". This is meant to replace asm_test.go as an easier and more readable way to test code generation. I've added a couple of codegen tests to get initial feedback on the syntax. I've created them under a common "codegen" subdirectory, so that it's easier to run them all with "go run run.go -v codegen". The asmcheck syntax allows to insert line comments that can specify a regular expression to match in the assembly code, for multiple architectures (the testsuite will automatically build each testfile multiple times, one per mentioned architecture). Negative matches are unsupported for now, so this cannot fully replace asm_test yet. Change-Id: Ifdbba389f01d55e63e73c99e5f5449e642101d55 Reviewed-on: https://go-review.googlesource.com/97355 Run-TryBot: Giovanni Bajo <rasky@develer.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Alberto Donizetti <alb.donizetti@gmail.com> |
||
|
Tobias Klauser
|
c7c01efd96 |
runtime: clean up libc_* definitions on Solaris
All functions defined in syscall2_solaris.go have the respective libc_* var in syscall_solaris.go, except for libc_close. Move it from os3_solaris.go Remove unused libc_fstat. Order go:cgo_import_dynamic and go:linkname lists in syscall2_solaris.go alphabetically. Change-Id: I9f12fa473cf1ae351448ac45597c82a67d799c31 Reviewed-on: https://go-review.googlesource.com/97736 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
||
Joe Tsai
|
4338518da8 |
encoding/json: avoid assuming side-effect free reflect.Value.Addr().Elem()
Consider the following:
type child struct{ Field string }
type parent struct{ child }
p := new(parent)
v := reflect.ValueOf(p).Elem().Field(0)
v.Field(0).SetString("hello") // v.Field = "hello"
v = v.Addr().Elem() // v = *(&v)
v.Field(0).SetString("goodbye") // v.Field = "goodbye"
It would appear that v.Addr().Elem() should have the same value, and
that it would be safe to set "goodbye".
However, after CL 66331, any interspersed calls between Field calls
causes the RO flag to be set.
Thus, setting to "goodbye" actually causes a panic.
That CL affects decodeState.indirect which assumes that back-to-back
Value.Addr().Elem() is side-effect free. We fix that logic to keep
track of the Addr() and Elem() calls and set v back to the original
after a full round-trip has occured.
Fixes #24152
Updates #24153
Change-Id: Ie50f8fe963f00cef8515d89d1d5cbc43b76d9f9c
Reviewed-on: https://go-review.googlesource.com/97796
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
|
||
erifan01
|
8c3c8332cd |
cmd/asm: enable several arm64 load & store instructions
Instructions LDARB, LDARH, LDAXPW, LDAXP, STLRB, STLRH, STLXP, STLXPW, STXP, STXPW have been added before, but they are not enabled. This CL enabled them. Change the form of LDXP and LDXPW to the form of LDP, and fix a bug of STLXP. Change-Id: I5d2b51494b92451bf6b072c65cfdd8acf07e9b54 Reviewed-on: https://go-review.googlesource.com/96215 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
|
1057624985 |
cmd/compile: optimize ARM64 code with EON/ORN
EON and ORN are efficient ARM64 instructions. EON combines (x ^ ^y) into a single operation, and so ORN does for (x | ^y). This CL implements that optimization. And here are benchmark results with RaspberryPi3/ArchLinux. 1. A specific test gets about 13% improvement. EONORN 181µs ± 0% 157µs ± 0% -13.26% (p=0.000 n=26+23) (https://github.com/benshi001/ugo1/blob/master/eonorn_test.go) 2. There is little change in the go1 benchmark, excluding noise. name old time/op new time/op delta BinaryTree17-4 44.1s ± 2% 44.0s ± 2% ~ (p=0.513 n=30+30) Fannkuch11-4 32.9s ± 3% 32.8s ± 3% -0.12% (p=0.024 n=30+30) FmtFprintfEmpty-4 561ns ± 9% 558ns ± 9% ~ (p=0.654 n=30+30) FmtFprintfString-4 1.09µs ± 4% 1.09µs ± 3% ~ (p=0.158 n=30+30) FmtFprintfInt-4 1.12µs ± 0% 1.12µs ± 0% ~ (p=0.917 n=23+28) FmtFprintfIntInt-4 1.73µs ± 0% 1.76µs ± 4% ~ (p=0.665 n=23+30) FmtFprintfPrefixedInt-4 2.15µs ± 1% 2.15µs ± 0% ~ (p=0.389 n=27+26) FmtFprintfFloat-4 3.18µs ± 4% 3.13µs ± 0% -1.50% (p=0.003 n=30+23) FmtManyArgs-4 7.32µs ± 4% 7.21µs ± 0% ~ (p=0.220 n=30+25) GobDecode-4 99.1ms ± 9% 97.0ms ± 0% -2.07% (p=0.000 n=30+23) GobEncode-4 83.3ms ± 3% 82.4ms ± 4% ~ (p=0.321 n=30+30) Gzip-4 4.39s ± 4% 4.32s ± 2% -1.42% (p=0.017 n=30+23) Gunzip-4 440ms ± 0% 447ms ± 4% +1.54% (p=0.006 n=24+30) HTTPClientServer-4 547µs ± 1% 537µs ± 1% -1.91% (p=0.000 n=30+30) JSONEncode-4 211ms ± 0% 211ms ± 0% +0.04% (p=0.000 n=23+24) JSONDecode-4 847ms ± 0% 847ms ± 0% ~ (p=0.158 n=25+25) Mandelbrot200-4 46.5ms ± 0% 46.5ms ± 0% -0.04% (p=0.000 n=25+24) GoParse-4 43.4ms ± 0% 43.4ms ± 0% ~ (p=0.494 n=24+25) RegexpMatchEasy0_32-4 1.03µs ± 0% 1.03µs ± 0% ~ (all equal) RegexpMatchEasy0_1K-4 4.02µs ± 3% 3.98µs ± 0% -0.95% (p=0.003 n=30+24) RegexpMatchEasy1_32-4 1.01µs ± 3% 1.01µs ± 2% ~ (p=0.629 n=30+30) RegexpMatchEasy1_1K-4 6.39µs ± 0% 6.39µs ± 0% ~ (p=0.564 n=24+23) RegexpMatchMedium_32-4 1.80µs ± 3% 1.78µs ± 0% ~ (p=0.155 n=30+24) RegexpMatchMedium_1K-4 555µs ± 0% 563µs ± 3% +1.55% (p=0.004 n=27+30) RegexpMatchHard_32-4 31.0µs ± 4% 30.5µs ± 1% -1.58% (p=0.000 n=30+23) RegexpMatchHard_1K-4 947µs ± 4% 931µs ± 0% -1.66% (p=0.009 n=30+24) Revcomp-4 7.71s ± 4% 7.71s ± 4% ~ (p=0.196 n=29+30) Template-4 877ms ± 0% 878ms ± 0% +0.16% (p=0.018 n=23+27) TimeParse-4 4.75µs ± 1% 4.74µs ± 0% ~ (p=0.895 n=24+23) TimeFormat-4 4.83µs ± 4% 4.83µs ± 4% ~ (p=0.767 n=30+30) [Geo mean] 709µs 707µs -0.35% name old speed new speed delta GobDecode-4 7.75MB/s ± 8% 7.91MB/s ± 0% +2.03% (p=0.001 n=30+23) GobEncode-4 9.22MB/s ± 3% 9.32MB/s ± 4% ~ (p=0.389 n=30+30) Gzip-4 4.43MB/s ± 4% 4.43MB/s ± 4% ~ (p=0.888 n=30+30) Gunzip-4 44.1MB/s ± 0% 43.4MB/s ± 4% -1.46% (p=0.009 n=24+30) JSONEncode-4 9.18MB/s ± 0% 9.18MB/s ± 0% ~ (p=0.308 n=16+24) JSONDecode-4 2.29MB/s ± 0% 2.29MB/s ± 0% ~ (all equal) GoParse-4 1.33MB/s ± 0% 1.33MB/s ± 0% ~ (all equal) RegexpMatchEasy0_32-4 30.9MB/s ± 0% 30.9MB/s ± 0% ~ (p=1.000 n=23+24) RegexpMatchEasy0_1K-4 255MB/s ± 3% 257MB/s ± 0% +0.92% (p=0.004 n=30+24) RegexpMatchEasy1_32-4 31.7MB/s ± 3% 31.6MB/s ± 2% ~ (p=0.603 n=30+30) RegexpMatchEasy1_1K-4 160MB/s ± 0% 160MB/s ± 0% ~ (p=0.435 n=24+23) RegexpMatchMedium_32-4 554kB/s ± 3% 560kB/s ± 0% +1.08% (p=0.004 n=30+24) RegexpMatchMedium_1K-4 1.85MB/s ± 0% 1.82MB/s ± 3% -1.48% (p=0.001 n=27+30) RegexpMatchHard_32-4 1.03MB/s ± 4% 1.05MB/s ± 1% +1.51% (p=0.027 n=30+23) RegexpMatchHard_1K-4 1.08MB/s ± 4% 1.10MB/s ± 0% +1.69% (p=0.002 n=30+25) Revcomp-4 33.0MB/s ± 4% 33.0MB/s ± 4% ~ (p=0.272 n=29+30) Template-4 2.21MB/s ± 0% 2.21MB/s ± 0% ~ (all equal) [Geo mean] 7.75MB/s 7.77MB/s +0.29% 3. There is little regression in the compilecmp benchmark. name old time/op new time/op delta Template 2.28s ± 3% 2.28s ± 4% ~ (p=0.739 n=10+10) Unicode 1.34s ± 4% 1.32s ± 3% ~ (p=0.113 n=10+9) GoTypes 8.10s ± 3% 8.18s ± 3% ~ (p=0.393 n=10+10) Compiler 39.0s ± 3% 39.2s ± 3% ~ (p=0.393 n=10+10) SSA 114s ± 3% 115s ± 2% ~ (p=0.631 n=10+10) Flate 1.41s ± 2% 1.42s ± 3% ~ (p=0.353 n=10+10) GoParser 1.81s ± 1% 1.83s ± 2% ~ (p=0.211 n=10+9) Reflect 5.06s ± 2% 5.06s ± 2% ~ (p=0.912 n=10+10) Tar 2.19s ± 3% 2.20s ± 3% ~ (p=0.247 n=10+10) XML 2.65s ± 2% 2.67s ± 5% ~ (p=0.796 n=10+10) [Geo mean] 4.92s 4.93s +0.27% name old user-time/op new user-time/op delta Template 2.81s ± 2% 2.81s ± 3% ~ (p=0.971 n=10+10) Unicode 1.70s ± 3% 1.67s ± 5% ~ (p=0.315 n=10+10) GoTypes 9.71s ± 1% 9.78s ± 1% +0.71% (p=0.023 n=10+10) Compiler 47.3s ± 1% 47.1s ± 3% ~ (p=0.579 n=10+10) SSA 143s ± 2% 143s ± 2% ~ (p=0.280 n=10+10) Flate 1.70s ± 3% 1.71s ± 3% ~ (p=0.481 n=10+10) GoParser 2.21s ± 3% 2.21s ± 1% ~ (p=0.549 n=10+9) Reflect 5.89s ± 1% 5.87s ± 2% ~ (p=0.739 n=10+10) Tar 2.66s ± 2% 2.63s ± 2% ~ (p=0.105 n=10+10) XML 3.16s ± 3% 3.18s ± 2% ~ (p=0.143 n=10+10) [Geo mean] 5.97s 5.97s -0.06% name old text-bytes new text-bytes delta HelloSize 637kB ± 0% 637kB ± 0% ~ (all equal) name old data-bytes new data-bytes delta HelloSize 9.46kB ± 0% 9.46kB ± 0% ~ (all equal) name old bss-bytes new bss-bytes delta HelloSize 125kB ± 0% 125kB ± 0% ~ (all equal) name old exe-bytes new exe-bytes delta HelloSize 1.24MB ± 0% 1.24MB ± 0% ~ (all equal) Change-Id: Ie27357d65c5ce9d07afdffebe1e2daadcaa3369f Reviewed-on: https://go-review.googlesource.com/97036 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
||
|
Balaram Makam
|
094258408d |
cmd/compile: improve fractional word zeroing
This change improves fractional word zeroing by using overlapping MOVDs for the fractions. Performance of go1 benchmarks on Amberwing was all noise: name old time/op new time/op delta RegexpMatchEasy0_32 247ns ± 0% 246ns ± 0% -0.40% (p=0.008 n=5+5) RegexpMatchEasy0_1K 581ns ± 0% 579ns ± 0% -0.34% (p=0.000 n=5+4) RegexpMatchEasy1_32 244ns ± 0% 242ns ± 0% ~ (p=0.079 n=4+5) RegexpMatchEasy1_1K 804ns ± 0% 805ns ± 0% ~ (p=0.238 n=5+4) RegexpMatchMedium_32 313ns ± 0% 311ns ± 0% -0.64% (p=0.008 n=5+5) RegexpMatchMedium_1K 52.2µs ± 0% 51.9µs ± 0% -0.52% (p=0.016 n=5+4) RegexpMatchHard_32 2.75µs ± 0% 2.74µs ± 0% ~ (p=0.603 n=5+5) RegexpMatchHard_1K 78.8µs ± 0% 78.9µs ± 0% +0.05% (p=0.008 n=5+5) FmtFprintfEmpty 58.6ns ± 0% 58.6ns ± 0% ~ (p=0.159 n=5+5) FmtFprintfString 118ns ± 0% 119ns ± 0% +0.85% (p=0.008 n=5+5) FmtFprintfInt 119ns ± 0% 123ns ± 0% +3.36% (p=0.016 n=5+4) FmtFprintfIntInt 192ns ± 0% 200ns ± 0% +4.17% (p=0.008 n=5+5) FmtFprintfPrefixedInt 224ns ± 0% 209ns ± 0% -6.70% (p=0.008 n=5+5) FmtFprintfFloat 335ns ± 0% 335ns ± 0% ~ (all equal) FmtManyArgs 775ns ± 0% 811ns ± 1% +4.67% (p=0.016 n=4+5) Gzip 437ms ± 0% 438ms ± 0% +0.19% (p=0.008 n=5+5) HTTPClientServer 88.7µs ± 1% 90.3µs ± 1% +1.75% (p=0.016 n=5+5) JSONEncode 20.1ms ± 1% 20.1ms ± 0% ~ (p=1.000 n=5+5) JSONDecode 94.7ms ± 1% 94.8ms ± 1% ~ (p=0.548 n=5+5) GobDecode 12.8ms ± 1% 12.8ms ± 1% ~ (p=0.548 n=5+5) GobEncode 12.1ms ± 0% 12.1ms ± 0% ~ (p=0.151 n=5+5) Mandelbrot200 5.37ms ± 0% 5.37ms ± 0% -0.03% (p=0.008 n=5+5) TimeParse 450ns ± 0% 451ns ± 1% ~ (p=0.635 n=4+5) TimeFormat 485ns ± 0% 484ns ± 0% ~ (p=0.508 n=5+5) Template 90.4ms ± 0% 90.2ms ± 0% -0.24% (p=0.016 n=5+5) GoParse 5.98ms ± 0% 5.98ms ± 0% ~ (p=1.000 n=5+5) BinaryTree17 11.8s ± 0% 11.8s ± 0% ~ (p=0.841 n=5+5) Revcomp 669ms ± 0% 669ms ± 0% ~ (p=0.310 n=5+5) Fannkuch11 3.28s ± 0% 3.34s ± 0% +1.64% (p=0.008 n=5+5) name old speed new speed delta RegexpMatchEasy0_32 129MB/s ± 0% 130MB/s ± 0% +0.30% (p=0.016 n=4+5) RegexpMatchEasy0_1K 1.76GB/s ± 0% 1.77GB/s ± 0% +0.27% (p=0.016 n=5+4) RegexpMatchEasy1_32 131MB/s ± 0% 132MB/s ± 0% +0.71% (p=0.016 n=4+5) RegexpMatchEasy1_1K 1.27GB/s ± 0% 1.27GB/s ± 0% -0.17% (p=0.016 n=5+4) RegexpMatchMedium_32 3.19MB/s ± 0% 3.21MB/s ± 0% +0.63% (p=0.008 n=5+5) RegexpMatchMedium_1K 19.6MB/s ± 0% 19.7MB/s ± 0% +0.52% (p=0.016 n=5+4) RegexpMatchHard_32 11.7MB/s ± 0% 11.7MB/s ± 0% ~ (p=0.643 n=5+5) RegexpMatchHard_1K 13.0MB/s ± 0% 13.0MB/s ± 0% ~ (p=0.079 n=4+5) Gzip 44.4MB/s ± 0% 44.3MB/s ± 0% -0.19% (p=0.008 n=5+5) JSONEncode 96.3MB/s ± 1% 96.4MB/s ± 0% ~ (p=1.000 n=5+5) JSONDecode 20.5MB/s ± 1% 20.5MB/s ± 1% ~ (p=0.460 n=5+5) GobDecode 60.1MB/s ± 1% 59.9MB/s ± 1% ~ (p=0.548 n=5+5) GobEncode 63.5MB/s ± 0% 63.7MB/s ± 0% ~ (p=0.135 n=5+5) Template 21.5MB/s ± 0% 21.5MB/s ± 0% +0.24% (p=0.016 n=5+5) GoParse 9.68MB/s ± 0% 9.69MB/s ± 0% ~ (p=0.786 n=5+5) Revcomp 380MB/s ± 0% 380MB/s ± 0% ~ (p=0.310 n=5+5) Change-Id: I596eee6421cdbad1a0189cdb9fe0628bba534eaf Reviewed-on: https://go-review.googlesource.com/96775 Reviewed-by: Cherry Zhang <cherryyz@google.com> Run-TryBot: Cherry Zhang <cherryyz@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
||
|
Hana Kim
|
413d8a833d |
cmd/trace: skip tests if parsing fails with timestamp error
runtime/trace test already skips tests in case of the timestamp error. Moreover, relax TestAnalyzeAnnotationGC test condition to deal with the inaccuracy caused from use of cputicks in tracing. Fixes #24081 Updates #16755 Change-Id: I708ecc6da202eaec07e431085a75d3dbfbf4cc06 Reviewed-on: https://go-review.googlesource.com/97757 Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com> Reviewed-by: Heschi Kreinick <heschi@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
||
Matthew Dempsky
|
b3f00c6985 |
cmd/compile: fix unexpected type alias crash
OCOMPLIT stores the pre-typechecked type in n.Right, and then moves it
to n.Type. However, it wasn't clearing n.Right, so n.Right continued
to point to the OTYPE node. (Exception: slice literals reused n.Right
to store the array length.)
When exporting inline function bodies, we don't expect to need to save
any type aliases. Doing so wouldn't be wrong per se, but it's
completely unnecessary and would just bloat the export data.
However, reexportdep (whose role is to identify types needed by inline
function bodies) uses a generic tree traversal mechanism, which visits
n.Right even for O{ARRAY,MAP,STRUCT}LIT nodes. This means it finds the
OTYPE node, and mistakenly interpreted that the type alias needs to be
exported.
The straight forward fix is to just clear n.Right when typechecking
composite literals.
Fixes #24173.
Change-Id: Ia2d556bfdd806c83695b08e18b6cd71eff0772fc
Reviewed-on: https://go-review.googlesource.com/97719
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
|
||
Daniel Martí
|
1e308fbc1a |
cmd/compile: improved error message when calling a shadowed builtin
Otherwise, the error can be confusing if one forgets or doesn't know that the builtin is being shadowed, which is not common practice. Fixes #22822. Change-Id: I735393b5ce28cb83815a1c3f7cd2e7bb5080a32d Reviewed-on: https://go-review.googlesource.com/97455 Reviewed-by: Robert Griesemer <gri@golang.org> |
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Adam Langley
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4b1d704d14 |
crypto/x509: parse invalid DNS names and email addresses.
Go 1.10 requires that SANs in certificates are valid. However, a non-trivial number of (generally non-WebPKI) certificates have invalid strings in dnsName fields and some have even put those dnsName SANs in CA certificates. This change defers validity checking until name constraints are checked. Fixes #23995, #23711. Change-Id: I2e0ebb0898c047874a3547226b71e3029333b7f1 Reviewed-on: https://go-review.googlesource.com/96378 Run-TryBot: Adam Langley <agl@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> |
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Robert Griesemer
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c1359db9cc |
go/types: fix empty interface optimization (minor performance bug)
The tests checking for empty interfaces so that they can be fast- tracked in the code actually didn't test the right field and the fast track code never executed. Doing it now. Change-Id: I58b2951efb3fb40b3366874c79fd653591ae0e99 Reviewed-on: https://go-review.googlesource.com/97519 Reviewed-by: Alan Donovan <adonovan@google.com> |
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Robert Griesemer
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e2b5e6038b |
go/types: fix incorrect context when type-checking interfaces
Regression, introduced by https://go-review.googlesource.com/c/go/+/79575 which meant to be more conservative but ended up destroying an important context. Fixes #24140. Change-Id: Id428dbb295ce9f11ab7cd54ec5ab51ef4291ac3f Reviewed-on: https://go-review.googlesource.com/97535 Reviewed-by: Alan Donovan <adonovan@google.com> |
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Josh Bleecher Snyder
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91a05b92be |
cmd/compile: prevent memmove in copy when dst == src
This causes a nominal increase in binary size. name old object-bytes new object-bytes delta Template 399kB ± 0% 399kB ± 0% ~ (all equal) Unicode 207kB ± 0% 207kB ± 0% ~ (all equal) GoTypes 1.23MB ± 0% 1.23MB ± 0% ~ (all equal) Compiler 4.35MB ± 0% 4.35MB ± 0% +0.01% (p=0.008 n=5+5) SSA 9.77MB ± 0% 9.77MB ± 0% +0.00% (p=0.008 n=5+5) Flate 236kB ± 0% 236kB ± 0% +0.04% (p=0.008 n=5+5) GoParser 298kB ± 0% 298kB ± 0% ~ (all equal) Reflect 1.03MB ± 0% 1.03MB ± 0% +0.01% (p=0.008 n=5+5) Tar 333kB ± 0% 334kB ± 0% +0.22% (p=0.008 n=5+5) XML 414kB ± 0% 414kB ± 0% +0.02% (p=0.008 n=5+5) [Geo mean] 730kB 731kB +0.03% Change-Id: I381809fd9cfbfd6db44bd342b06285e62a3a21f1 Reviewed-on: https://go-review.googlesource.com/94596 Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com> Reviewed-by: Keith Randall <khr@golang.org> |
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Richard Miller
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a379b7d9ac |
syscall: reduce redundant getwd tracking in Plan 9
In Plan 9, each M is implemented as a separate OS process with its own working directory. To keep the wd consistent across goroutines (or rescheduling of the same goroutine), CL 6350 introduced a Fixwd procedure which checks using getwd and calls chdir if necessary before any syscall operating on a pathname. This wd checking will not be necessary if the pathname is absolute (starts with '/' or '#'). Getwd is a fairly expensive operation in Plan 9 (implemented by opening "." and calling Fd2path on the file descriptor). Eliminating the redundant getwd calls can significantly reduce overhead for common operations like "dist test --list" which perform many syscalls on absolute pathnames. Updates #9428. Change-Id: I13fd9380779de27b0ac2f2b488229778d6839255 Reviewed-on: https://go-review.googlesource.com/97675 Reviewed-by: David du Colombier <0intro@gmail.com> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: David du Colombier <0intro@gmail.com> |
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Richard Miller
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c2cdfbd1a7 |
runtime: don't try to shrink address space with brk in Plan 9
Plan 9 won't let brk shrink the data segment if it's shared with other processes (which it is in the go runtime). So we keep track of the notional end of the segment as it moves up and down, and call brk only when it grows. Corrects CL 94776. Updates #23860. Fixes #24013. Change-Id: I754232decab81dfd71d690f77ee6097a17d9be11 Reviewed-on: https://go-review.googlesource.com/97595 Reviewed-by: David du Colombier <0intro@gmail.com> Reviewed-by: Austin Clements <austin@google.com> Run-TryBot: David du Colombier <0intro@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> |
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Rob Pike
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1be58dcda8 |
doc/faq: add a Q&A about virus scanners
Fixes #23759. Change-Id: I0407ebfea507991fc205f7b04bc5798808a5c5f6 Reviewed-on: https://go-review.googlesource.com/97496 Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Reviewed-by: David Symonds <dsymonds@golang.org> |
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Robert Griesemer
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0c884d0810 |
cmd/compile, cmd/compile/internal/syntax: print relative column info
This change enables printing of relative column information if a prior line directive specified a valid column. If there was no line directive, or the line directive didn't specify a column (or the -C flag is specified), no column information is shown in file positions. Implementation: Column values (and line values, for that matter) that are zero are interpreted as "unknown". A line directive that doesn't specify a column records that as a zero column in the respective PosBase data structure. When computing relative columns, a relative value is zero of the base's column value is zero. When formatting a position, a zero column value is not printed. To make this work without special cases, the PosBase for a file is given a concrete (non-0:0) position 1:1 with the PosBase's line and column also being 1:1. In other words, at the position 1:1 of a file, it's relative positions are starting with 1:1 as one would expect. In the package syntax, this requires self-recursive PosBases for file bases, matching what cmd/internal/src.PosBase was already doing. In src.PosBase, file and inlining bases also need to be based at 1:1 to indicate "known" positions. This change completes the cmd/compiler part of the issue below. Fixes #22662. Change-Id: I6c3d2dee26709581fba0d0261b1d12e93f1cba1a Reviewed-on: https://go-review.googlesource.com/97375 Reviewed-by: Matthew Dempsky <mdempsky@google.com> |
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Hana Kim
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b5bd5bfbc7 |
cmd/trace: fix overlappingDuration
Update #24081 Change-Id: Ieccfb03c51e86f35d4629a42959c80570bd93c33 Reviewed-on: https://go-review.googlesource.com/97555 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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Heschi Kreinick
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f8973fcafb |
cmd/link: revert CL 89535: "fix up location lists for dsymutil"
This reverts commit
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Kunpei Sakai
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21343e07d6 |
cmd/compile: remove duplicates by using finishcompare
Updates #23834 Change-Id: If05001f9fd6b97d72069f440102eec6e371908dd Reviewed-on: https://go-review.googlesource.com/97016 Run-TryBot: Kunpei Sakai <namusyaka@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Matthew Dempsky <mdempsky@google.com> |
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Michael Fraenkel
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a375a6b363 |
cmd/compile: convert untyped bool during walkCases
Updates #23834. Change-Id: I1789525a992d37aae9e9b69c1e9d91437d3d0d3b Reviewed-on: https://go-review.googlesource.com/97001 Run-TryBot: Matthew Dempsky <mdempsky@google.com> Reviewed-by: Matthew Dempsky <mdempsky@google.com> |