This CL changes unified IR to explicitly handle function
instantiations within expression handling, rather than leaving it to
the underlying object reading logic.
Change-Id: I009a56013fbe9fbc4dabf80eea98993d34af4272
Reviewed-on: https://go-review.googlesource.com/c/go/+/421817
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There was a TODO about quadratic performance, and indeed,
it can get bad. Added a map, made some integers that are
unlikely to exceed a few million into 32-bit integers.
Change-Id: I6facf2eabc00483e943b326ca8dcae2f778093da
Reviewed-on: https://go-review.googlesource.com/c/go/+/422297
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This CL applies the same change to test/live.go that was previously
applied to test/live_regabi.go in golang.org/cl/415240. This wasn't
noticed at the time though, because GOEXPERIMENT=unified was only
being tested on linux-amd64, which is a regabi platform.
Change-Id: I0c75c2b7097544305e4174c2f5ec6ec283c81a8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/422254
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`go env GOEXPERIMENT` prints what experiments are enabled relative to
the baseline configuration, so it's not a very robust way to detect
what experiments have been statically enabled at bootstrap time.
Instead, we can check build.Default.ToolTags, which has goexperiment.*
for all currently enabled experiments, independent of baseline.
Change-Id: I6132deaa73b1e79ac24176ef4de5af67a507ee26
Reviewed-on: https://go-review.googlesource.com/c/go/+/422234
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Those ureader.go files have enough documents and in stable
developement/review as other parts of Unified IR.
Fixes#48194
Change-Id: I08a0cbfef05401135b5390e00fe808e838a96170
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I've needed this more than once in the past, I hack it in,
then throw it away, seems sensible to make the change and
save it.
Fixes#53937.
Change-Id: I7fe886b1c93d73cbf553bed587f2c30f0f5d5a0b
Reviewed-on: https://go-review.googlesource.com/c/go/+/418015
Reviewed-by: Keith Randall <khr@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
The SERVER_NAME variable in the CGI environment should not
contain the port, according to the section 4.1.14 of the
RFC 3875.
Fixes#53368.
Change-Id: Ifeea70206878cf83bc0bda35cb514d0226bbcd8c
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The test passed on linux/arm64, so re-enable it.
Change-Id: Ib5252d89b58f0de256993065e27b64c4676f5103
Reviewed-on: https://go-review.googlesource.com/c/go/+/414975
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For signed comparisons, the following four optimization rules hold:
(CMPconst [0] z:(AND x y)) && z.Uses == 1 => (TST x y)
(CMPWconst [0] z:(AND x y)) && z.Uses == 1 => (TSTW x y)
(CMPconst [0] x:(ANDconst [c] y)) && x.Uses == 1 => (TSTconst [c] y)
(CMPWconst [0] x:(ANDconst [c] y)) && x.Uses == 1 => (TSTWconst [int32(c)] y)
But currently they only apply to jump instructions, not to conditional
instructions within a block, such as cset, csel, etc. This CL extends
the above rules into blocks so that conditional instructions can also be
optimized.
name old time/op new time/op delta
DivisiblePow2constI64-160 1.04ns ± 0% 0.86ns ± 0% -17.30% (p=0.008 n=5+5)
DivisiblePow2constI32-160 1.04ns ± 0% 0.87ns ± 0% -16.16% (p=0.016 n=4+5)
DivisiblePow2constI16-160 1.04ns ± 0% 0.87ns ± 0% -16.03% (p=0.008 n=5+5)
DivisiblePow2constI8-160 1.04ns ± 0% 0.86ns ± 0% -17.15% (p=0.008 n=5+5)
Change-Id: I6bc34bff30862210e8dd001e0340b8fe502fe3de
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When a generic interface method is used, we use a special
relocation R_USEGENERICIFACEMETHOD to tell the linker the name of
the generic interface method, so it can keep methods with that
name live. The relocation references a symbol whose content is the
name. Currently this is a string symbol, which is content
addessable and may have trailing zero bytes (for better
deduplication). The trailing bytes can cause confusion for the
linker. This symbol doesn't need to be in the final binary and
doesn't need to be deduplicated with other symbol. So we don't use
content addressable symbol but make an (unnamed) symbol
specifically for this.
May fix#54346.
Change-Id: If0c34f7844c3553a7be3846b66cf1c103bc231c4
Reviewed-on: https://go-review.googlesource.com/c/go/+/422300
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Add new line at the end of crash_test.go.
Change-Id: I73c77666066b105e563215f34e7ede6c1d92226b
Reviewed-on: https://go-review.googlesource.com/c/go/+/422299
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
We claim to not maintain pointer bits for noscan objects. But in fact
we do, since whenever we switch a page from scannable to noscan, we
call heapBits.initSpan which zeroes the heap bits.
Switch to ensure that we never scan noscan objects. This ensures that
we don't depend on the ptrbits for noscan objects. That fixes a bug
in the 1-bit bitmap CL which depended on that fact.
Change-Id: I4e66f582605b53732f8fca310c1f6bd2892963cb
Reviewed-on: https://go-review.googlesource.com/c/go/+/422435
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Replace loading and storing an atomic.Value of type pointer with
atomic.Pointer.
Change-Id: I018ac1e18eee4f203ebca65c2833daf991075371
Reviewed-on: https://go-review.googlesource.com/c/go/+/422174
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Updates github.com/google/pprof to bring in the commit from
https://github.com/google/pprof/pull/717 which fixes mangled
symbol names for type parameters.
Fixes#54105
Change-Id: I01af9f780aba3338b960a03b30906a23642e4448
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Consistently recommend using EscapedPath rather than RawPath directly.
For #33596.
Change-Id: Ibe5c2dfa7fe6b1fbc540efed6db1291fc6532726
Reviewed-on: https://go-review.googlesource.com/c/go/+/418035
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Change-Id: Ia8c67d148fc7e71cac8954ccce6fffb8a6f423df
GitHub-Last-Rev: 9441b8f0c5
GitHub-Pull-Request: golang/go#54036
Reviewed-on: https://go-review.googlesource.com/c/go/+/419322
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Per TODO, this CL just moves code around without behavioral
change. Part of a cleanup process so that it's easier to access object
dictionaries where needed.
Change-Id: I95bb3cdd3cdb46cae47d76d5c1d5d8256661f222
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This CL adds a test that method expressions where the receiver type is
a derived type and embeds a promoted method work correctly.
Change-Id: I2e7c96007b6d9e6f942dc14228970ac508ff5c15
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The Go 1.18 frontend handles package-scope generic method values by
spilling the receiver value to a global temporary variable, which pins
it into memory. This issue isn't present in unified IR, which uses
OMETHVALUE when the receiver type is statically known.
Updates #54343.
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For interface method values, we nil check the receiver value at the
point of evaluating the method value. Currently this is inserted by
the backend during walk, but in some cases it's useful to emit them
upfront instead.
OITAB is essentially a field selection operation, like ODOT, OIDATA,
and OSPTR.
OCHECKNIL is a statement that simply evaluates its unary operand, and
discards the result (after testing for nil).
Change-Id: I583b5170539caa9a87aec661d5c293080fd87fbb
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ir.ClosureExpr implements ir.InitNode, so ir.InitExpr can prepend init
statements to it. However, CalleeEffects wasn't aware of this and
could cause the init statements to get dropped when inlining a call to
a closure.
This isn't an issue today, because we don't create closures with init
statements. But I ran into this within unified IR.
Easy and robust solution: just take advantage that ir.TakeInit can
handle any node.
Change-Id: Ica05fbf6a8c5be4b11927daf84491a1140da5431
Reviewed-on: https://go-review.googlesource.com/c/go/+/422196
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NewClosureVar should only be called to capture locally declared
variables in the enclosing function scope. This CL adds a check to
make sure it's used that way, in particular to make sure it's not
called to capture global variables.
This came up because for generic method values, we desugar the method
value into a function literal that captures the receiver value after
evaluating it. However, due to compiler backend limitations, for
package-scope generic method values we spill the receiver value into a
global variable rather than capturing it normally.
To prevent confusing backend issues when misusing NewClosureVar with
global variables, this CL adds an extra check.
Change-Id: I80f0f083dc80f70c7f0298020efe56dba00b67d7
Reviewed-on: https://go-review.googlesource.com/c/go/+/422195
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When debugging IR that uses OLINKSYMOFFSET, you really need to know
what linksym it actually refers to.
Change-Id: I7f4775d040b50e36262f9f8b52d0fb112b7ed350
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This reverts commit b589208c8c.
Reason for revert: Bug somewhere in this code, causing wasm and maybe linux/386 to fail.
Change-Id: I5e1e501d839584e0219271bb937e94348f83c11f
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This reverts commit c3833a5543.
Reason for revert: Bug somewhere in this code, causing wasm and maybe linux/386 to fail.
Change-Id: I05f7cfa467598ca0c2c84fd4f752cc4ef117cc51
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Skip a collection of -buildmode=pie tests on alpine, which are
currently failing on the linux-amd64-alpine builder. Once #54354 has
been investigated and resolved we can turn these tests back on.
Updates #54354.
Change-Id: I99d4016a40873ee6bb4eda571a64eddbe719c76a
Reviewed-on: https://go-review.googlesource.com/c/go/+/422295
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Reviewed-by: Cherry Mui <cherryyz@google.com>
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Add named constants for the 3rd, 4th, and 13th most popular formats.
Fixes#52746
Change-Id: I7ce92e44dcae18c089124f1d6f5bc2d6359d436c
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Disable the TestGdb* testpoints until we can figure out why they are
failing and reconfigure the machine properly.
Updates #54352.
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After CL 418514, Unified IR now always write concrete type of constant
expressions, thus we don't need to handle untyped string anymore.
Change-Id: Ic930ee2418746ca9f4a5122c614e077bef8d7eb4
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Same as CL 418475, but for Unified IR.
Updates #53888Fixes#54337
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So we don't have to duplicate the logic to detect noopt builder in
multiple places.
Based on khr@'s suggestion in CL 422037.
Change-Id: Idb338e8bc08cdf00460574bfc0d2f7018c79bbd5
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They exist on all other Unix ports, define them on GOOS=solaris as well.
Fixes#52875
Change-Id: I7285156b3b48ce12fbcc6d1d88865540a5c51a21
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Currently the linux/arm64 and linux/riscv64 ports wrap the fstatat
syscall twice, once in func fstatat and once in func Fstatat. Change the
latter to be a simple wrapper around the former to deduplicate some
code.
Change-Id: I82ec9374e2bcfe116eabf01f021eed1ee810ec15
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As it can't appear in user package paths.
There is a hack for handling "go:buildid" and "type:*" on windows/386.
Previously, windows/386 requires underscore prefix on external symbols,
but that's only applied for SHOSTOBJ/SUNDEFEXT or cgo export symbols.
"go.buildid" is STEXT, "type.*" is STYPE, thus they are not prefixed
with underscore.
In external linking mode, the external linker can't resolve them as
external symbols. But we are lucky that they have "." in their name,
so the external linker see them as Forwarder RVA exports. See:
- https://docs.microsoft.com/en-us/windows/win32/debug/pe-format#export-address-table
- https://sourceware.org/git/?p=binutils-gdb.git;a=blob;f=ld/pe-dll.c;h=e7b82ba6ffadf74dc1b9ee71dc13d48336941e51;hb=HEAD#l972)
This CL changes "." to ":" in symbols name, so theses symbols can not be
found by external linker anymore. So a hacky way is adding the
underscore prefix for these 2 symbols. I don't have enough knowledge to
verify whether adding the underscore for all STEXT/STYPE symbols are
fine, even if it could be, that would be done in future CL.
Fixes#37762
Change-Id: I92eaaf24c0820926a36e0530fdb07b07af1fcc35
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In CL 339309 these were probably copied from the respective
godoc comments in package inet.af/netaddr, also see
https://pkg.go.dev/inet.af/netaddr#IPPort.IsValid and
https://pkg.go.dev/inet.af/netaddr#IPPrefix.IsValid
In net/netip the methods are named Addr. Adjust the godoc comments
accordingly.
Change-Id: Icfe1d73b647c2e195d96cd5b1073a734905134af
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The new M1 cpu (Apple) comes with sha512 hardware
acceleration feature.
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Some compilers default to having -fstack-protector on, which breaks
when using internal linking because the linker doesn't know how to
find the support functions.
Fixes#52919Fixes#54313
Change-Id: I6f51d5e906503f61fc768ad8e30c163bad135087
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Doing the test at link time lets us distribute one Linux toolchain
that works on both glibc-based and musl-based Linux systems.
The old way built a toolchain that only ran on one or the other.
Fixes#54197.
Change-Id: Iaae8c274c78e1091eee828a720b49646be9bfffe
Reviewed-on: https://go-review.googlesource.com/c/go/+/420774
Auto-Submit: Russ Cox <rsc@golang.org>
Reviewed-by: Cherry Mui <cherryyz@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
Arrange for tests that call setMimeInit to fully restore the old values,
by clearing the sync.Once that controls initialization.
Once we've done that, call initMime in initMimeUnixTest because
otherwise the test types loaded there will be cleared by the call to
initMime that previously was not being done.
For golang/go#51648
Change-Id: I8bf92b305fc4499337db06113817c9decdc5aedb
Reviewed-on: https://go-review.googlesource.com/c/go/+/421442
Reviewed-by: Than McIntosh <thanm@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
Split should only split strings and not perform mangling
of invalid UTF-8 into ut8.RuneError.
The prior behavior is clearly a bug since mangling is not
performed in all other situations (e.g., separator is non-empty).
Fixes#53511
Change-Id: I112a2ef15ee46ddecda015ee14bca04cd76adfbf
Reviewed-on: https://go-review.googlesource.com/c/go/+/413715
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
...to avoid conflicts with the predeclared close function.
Change-Id: If6a19a004c390f4e0795ec207c72caa79a7281f4
Reviewed-on: https://go-review.googlesource.com/c/go/+/421934
Run-TryBot: Ian Lance Taylor <iant@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
Since when that test requires inlining, which is disabled on noopt
builder.
Updates #29951
Change-Id: I9d7a0a64015a30d3bfb5ad5d806ea0955657fda3
Reviewed-on: https://go-review.googlesource.com/c/go/+/422039
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Than McIntosh <thanm@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
