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Author SHA1 Message Date
Robert Griesemer
9e40780a46 go/types, types2: add test for receiver type parameters
Issue #51503 was fixed with the rewrite in CL 594740.
Add a respective test case.

Fixes #51503.
For #51343.

Change-Id: Iff9e7e3274c5ad40789e107b6f62d17e335e2428
Reviewed-on: https://go-review.googlesource.com/c/go/+/595697
Reviewed-by: Robert Griesemer <gri@google.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
2024-07-26 20:15:36 +00:00
Robert Griesemer
ea82219d1c go/types, types2: completely rewrite method receiver type checking
1) Factor out handling of receiver from Checker.funcType into
   Checker.collectRecv. Analyze the receiver parameter "manually"
   without resorting to calling Checker.collectParams.
   The code is more straight-forward and error handling is simpler
   because constructing the receiver type and variable is all handled
   in one function.

2) Change Checker.collectParams to collect parameter names and
   corresponding parameter variables, but do not declare them.
   Instead return two equal-length slices of parameter names
   and variables for later declaration.

3) Streamline Checker.funcType into a sequence of simple steps.
   By declaring the receiver and parameters after type parameters,
   there is no need for a temporary scope and scope squashing anymore.

4) Simplify Checker.unpackRecv some more: don't strip multiple
   *'s from receiver type expression because we don't typecheck
   that expression as a whole later (we don't use collectParams
   for receiver types anymore). If we have a **T receiver, we
   need to use *T (one * stripped) as receiver base type expression
   so that we can report an error later.

5) Remove Checker.recvTParamMap and associated machinery as it is
   not needed anymore.

6) Remove Scope.Squash/squash as it is not needed anymore.

7) Remove the explicit scope parameter from Checker.collectParams
   as it is not needed anymore.

8) Minor adjustments to tests: in some cases, error positions have
   shifted slightly (because we don't use Checker.collectParams to
   typecheck receivers anymore), and in some cases duplicate errors
   don't appear anymore (resolves TODOs).

Fixes #51343.

Change-Id: Ia77e939bb68e2912ef2e4ed68d2a7a0ad605c5ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/594740
Reviewed-by: Robert Findley <rfindley@google.com>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
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2024-07-26 20:14:26 +00:00
Robert Griesemer
1d542efe23 go/types, types2: adjust Checker.unpackRecv signature slightly
Instead of returning the receiver type name (rname), return the
receiver type base expression (base), with pointer indirections
stripped. The type base may or may not not be a type name. This
is needed for further rewrites of the signature type-checking code.
Adjust call sites accordingly to preserve existing behavior.

For #51343.

Change-Id: Ib472ca25d43ec340762d0a8dd1ad038568c2b2bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/595335
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Tim King <taking@google.com>
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2024-07-26 20:13:11 +00:00
Robert Griesemer
f234c9423b go/types, types2: fix test name (for debugging)
Change-Id: I982cf4da98af73ac41936a9d0b51588e3dbfd706
Reviewed-on: https://go-review.googlesource.com/c/go/+/594739
Reviewed-by: Robert Griesemer <gri@google.com>
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2024-07-26 20:13:07 +00:00
Robert Griesemer
0509936823 go/types, types2: report type name in comp. literal error, if possible
When reporting an error for the element type of a struct literal, use
the element type's type name rather than it's underlying/core type.

Also, combine error reporting for invalid composite literal types in
one place, at the end.

Fixes #68184.

Change-Id: I1f407d5403777948da9a0eca95aacc1389f4bd44
Reviewed-on: https://go-review.googlesource.com/c/go/+/595075
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2024-07-26 20:11:56 +00:00
Robert Griesemer
77a3c3b984 go/types, types2: remove superfluous if statement (minor cleanup)
Found while re-reading this code.

Change-Id: I5c87bb38ce07e49f1d122db1630c48d5ff082a30
Reviewed-on: https://go-review.googlesource.com/c/go/+/594975
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2024-07-26 20:11:54 +00:00
Robert Griesemer
1b7285d1ab go/types, types2: factor out method receiver validation
While at it, slightly regroup surounding code for clarity.

For #51343.

Change-Id: Ibb3a58c2ea138afae0be5315d98f698d7633b22a
Reviewed-on: https://go-review.googlesource.com/c/go/+/593455
Reviewed-by: Robert Findley <rfindley@google.com>
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2024-07-26 20:11:50 +00:00
Robert Griesemer
e0ca2e04b8 go/types, types2: slightly reorganize method receiver checking
- move receiver checks up, closer to where the receiver is collected
- adjust some comments after verifying against some test cases
- removed some minor discrepancies between the two type checkers

For #51343.

Change-Id: I75b58efbed1e408df89b8d6536e6c6da45740f93
Reviewed-on: https://go-review.googlesource.com/c/go/+/593336
Auto-Submit: Robert Griesemer <gri@google.com>
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2024-07-26 20:11:48 +00:00
Robert Griesemer
88bd985239 cmd/compile/internal/types2: use syntax.EndPos instead of local computation
Previously, the end position for a select statement clause body was
computed explicitly as the start of the next clause or the closing "}"
of the select statement, respectively.

Since syntax.EndPos computes the end position of a node, there's no
need to compute these positions "manually", we can simply use the
syntax.ExdPos for each clause. The positions are not exactly the
same as before but for the purpose of identifier visibility in
scopes there is no semantic change.

Simplifies the code and brings it more in line with go/types.

Change-Id: I24bca85a131a0ea31a2adaafc08ab713450258fb
Reviewed-on: https://go-review.googlesource.com/c/go/+/593016
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2024-07-26 20:11:46 +00:00
Robert Griesemer
e7b7f44ff8 go/types, types2: use ":" as start of implicit type switch case scopes
Adjust the respective API test accordingly.

Change-Id: I7ecc8899b40ae3b5aeb2c1e032935c672b41e0b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/592675
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2024-07-26 20:11:09 +00:00
Robert Griesemer
c761174d96 go/types, types2: cleanup of code handling type switch cases
Move logic for type-specific variable type into typeCases function
which already does all the relevant work.

Add more detailed documentation to typeCases function.

Uncomment alernative typeCases function so that it is being type-
checked and kept up-to-date. Since it's not (yet) used, the code
will not appear in the binary.

Follow-up on CL 592555.

Change-Id: I6e746503827d512a1dbf7b99b48345c480e61200
Reviewed-on: https://go-review.googlesource.com/c/go/+/592616
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2024-07-26 20:11:06 +00:00
Robert Griesemer
dd005f43f1 go/types, types2: factor out list substitution code (cleanup)
- Replace the various subst.XList methods with a generic function.
- Rename comparable function to comparableType to avoid shadowing
  predeclared type comparable.
- Rename substFunc/Var to cloneFunc/Var which is more accurate.

Change-Id: I3243f2093e4c43a537766f47e3348402de517090
Reviewed-on: https://go-review.googlesource.com/c/go/+/587775
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2024-07-26 20:05:46 +00:00
Austin Clements
2a3e2e9b29 runtime: allow experimental trace batches to be reused
Currently, we can only cache regular trace event buffers on each M. As
a result, calling unsafeTraceExpWriter will, in effect, always return
a new trace batch, with all of the overhead that entails.

This extends that cache to support buffers for experimental trace
data. This way, unsafeTraceExpWriter can return a partially used
buffer, which the caller can continue to extend. This gives the caller
control over when these buffers get flushed and reuses all of the
existing trace buffering mechanism.

This also has the consequence of simplifying the experimental batch
infrastructure a bit. Now, traceWriter needs to know the experiment ID
anyway, which means there's no need for a separate traceExpWriter
type.

Change-Id: Idc2100176c5d02e0fbb229dc8aa4aea2b1cf5231
Reviewed-on: https://go-review.googlesource.com/c/go/+/594595
Auto-Submit: Austin Clements <austin@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
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2024-07-26 18:46:28 +00:00
Cuong Manh Le
fac95803eb runtime: remove darwin-amd64-10_14 builder check
By now macOS 11 is the minimum required version.

Updates #43926

Change-Id: I13716e2e521c26bd9997f0ea1b717cf72ab7e47c
Reviewed-on: https://go-review.googlesource.com/c/go/+/601276
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2024-07-26 17:43:29 +00:00
Dmitri Shuralyov
d597642981 net: unskip TestUDPZeroBytePayload on Darwin
From information we have available in the issue, this test was flaky
on OS X 10.10 but not newer. By now macOS 11 is the minimum required
version, and 1000 local runs of the test passed, so try to unskip as
the next step.

For #29225.

Change-Id: I18a24459f01e53ef9de05b50d1dd8786d0683107
Cq-Include-Trybots: luci.golang.try:gotip-darwin-amd64_11,gotip-darwin-amd64_14
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2024-07-26 17:39:51 +00:00
Cuong Manh Le
b6efbd4efc cmd/compile, reflect: treat abi.NoEscape as cheap call
The abi.NoEscape function is introduced to replace all usages of
noescape wrapper in the standard library. However, the last usage in
reflect package is still present, because the inlining test failed if
abi.NoEscape were used. The reason is that reflect.noescape is treated
as a cheap call, while abi.NoEscape is not.

By treating abi.NoEscape a cheap call, the last usage of noescape in
reflect package can now be removed.

Change-Id: I798079780129221a5a26cbcb18c95ee30855b784
Reviewed-on: https://go-review.googlesource.com/c/go/+/601275
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2024-07-26 16:18:47 +00:00
Cuong Manh Le
deed521ea3 go/internal/gcimporter: cleanup test code pre Unified IR
Same as CL 543315 did for cmd/compile.

Change-Id: I56a200664c92fe34d4b78c2dbf6ed56288e89e0e
Reviewed-on: https://go-review.googlesource.com/c/go/+/600675
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2024-07-26 16:16:28 +00:00
Cuong Manh Le
eb3dd019ed cmd/compile: cleanup test code pre Unified IR
Change-Id: Ibb9a7ce37ac28873aa720a64d1f89cb87fc5fa27
Reviewed-on: https://go-review.googlesource.com/c/go/+/543315
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2024-07-26 16:13:46 +00:00
Cuong Manh Le
9b4b4ae585 types2, go/types: fix instantiation of named type with generic alias
The typechecker is assuming that alias instances cannot be reached from
a named type. However, when type parameters on aliases are permited, it
can happen.

This CL changes the typechecker to propagate the correct named instance
is being expanded.

Updates #46477
Fixes #68580

Change-Id: Id0879021f4640c0fefe277701d5096c649413811
Reviewed-on: https://go-review.googlesource.com/c/go/+/601115
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2024-07-26 13:41:08 +00:00
HeGaoYuan
d8c7230c97 cmd/compile/internal/types: fix typo in comment
Change-Id: Iacf22578338c8aa99587826a8342e1da6dc166a6
GitHub-Last-Rev: cdb3235e8c
GitHub-Pull-Request: golang/go#46598
Reviewed-on: https://go-review.googlesource.com/c/go/+/325510
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2024-07-25 22:41:07 +00:00
Chen Su
d69a0883d4 encoding/gob: fix package doc typo for wireType
Change-Id: Ib93f2b565e5271dfa3c3ca5d040ef24269c47cf8
GitHub-Last-Rev: 3f1da518a4
GitHub-Pull-Request: golang/go#68584
Reviewed-on: https://go-review.googlesource.com/c/go/+/601036
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2024-07-25 21:15:30 +00:00
Michael Anthony Knyszek
e76353d5a9 runtime: allow the tracer to be reentrant
This change allows the tracer to be reentrant by restructuring the
internals such that writing an event is atomic with respect to stack
growth. Essentially, a core set of functions that are involved in
acquiring a trace buffer and writing to it are all marked nosplit.

Stack growth is currently the only hidden place where the tracer may be
accidentally reentrant, preventing the tracer from being used
everywhere. It already lacks write barriers, lacks allocations, and is
non-preemptible. This change thus makes the tracer fully reentrant,
since the only reentry case it needs to handle is stack growth.

Since the invariants needed to attain this are subtle, this change also
extends the debugTraceReentrancy debug mode to check these invariants as
well. Specifically, the invariants are checked by setting the throwsplit
flag.

A side benefit of this change is it simplifies the trace event writing
API a good bit: there's no need to actually thread the event writer
through things, and most callsites look a bit simpler.

Change-Id: I7c329fb7a6cb936bd363c44cf882ea0a925132f3
Reviewed-on: https://go-review.googlesource.com/c/go/+/587599
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2024-07-25 14:38:21 +00:00
apocelipes
bd6f911f85 archive: use slices and maps to clean up tests
Replace reflect.DeepEqual with slices.Equal/maps.Equal, which is
much faster.

Clean up some unnecessary helper functions.

Change-Id: I9b94bd43886302b9b327539ab065a435ce0d75d9
GitHub-Last-Rev: b9ca21f165
GitHub-Pull-Request: golang/go#67607
Reviewed-on: https://go-review.googlesource.com/c/go/+/587936
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2024-07-25 00:25:45 +00:00
apocelipes
b5b9d24dc3 encoding: use slices and maps to clean up tests
Replace reflect.DeepEqual with slices.Equal/maps.Equal, which is
much faster.

Change-Id: I62ad60a66e28cfb2bb49c36037bafd4b9d201e88
GitHub-Last-Rev: 79554baddb
GitHub-Pull-Request: golang/go#67611
Reviewed-on: https://go-review.googlesource.com/c/go/+/587818
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2024-07-25 00:23:58 +00:00
apocelipes
05861ff90c os,path/filepath,testing: use slices to clean up tests
Replace reflect.DeepEqual with slices.Equal which is much faster.

Change-Id: I299db6f998738174983731f08c1021346b87dfaa
GitHub-Last-Rev: 44ca9015d6
GitHub-Pull-Request: golang/go#67613
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2024-07-25 00:23:06 +00:00
apocelipes
0b0dfcd540 runtime: use slices and maps to clean up tests
Replace reflect.DeepEqual with slices.Equal/maps.Equal, which is
much faster.

Also remove some unecessary helper functions.

Change-Id: I3e4fa2938fed1598278c9e556cd4fa3b9ed3ad6d
GitHub-Last-Rev: 69bb43fc6e
GitHub-Pull-Request: golang/go#67603
Reviewed-on: https://go-review.googlesource.com/c/go/+/587815
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2024-07-25 00:23:03 +00:00
apocelipes
2247afc0ae go,internal,io,mime: use slices and maps to clean tests
Replace reflect.DeepEqual with slices.Equal/maps.Equal, which is
much faster.

Change-Id: Id9cb550884da817da96befdeccfecb3325fb4414
GitHub-Last-Rev: 7d64d78feb
GitHub-Pull-Request: golang/go#67612
Reviewed-on: https://go-review.googlesource.com/c/go/+/587819
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2024-07-25 00:22:14 +00:00
apocelipes
1d717951f5 net: use slices and maps to clean up tests
Replace reflect.DeepEqual with slices.Equal/maps.Equal, which is
much faster.

Change-Id: I54600fb63a56460c11d3d5af9072da585e31b1a2
GitHub-Last-Rev: 08c1445ad5
GitHub-Pull-Request: golang/go#67606
Reviewed-on: https://go-review.googlesource.com/c/go/+/587816
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2024-07-25 00:20:13 +00:00
Dmitri Shuralyov
792a261303 doc/next: use relative link to Go issue
The Go release notes are served on multiple domains (go.dev,
golang.google.cn, tip.golang.org, localhost:8080 and so on), so links
pointing to the Go website itself need to be relative to work in all
those contexts.

Caught by a test in x/website. The next CL adds the same test to this
repository so these kinds of problems are caught sooner and with less
friction.

For #68545.
Fixes #68575.

Change-Id: I08056b98968c77a1d0ed93b63fccfbe41274ec8f
Reviewed-on: https://go-review.googlesource.com/c/go/+/600656
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2024-07-24 18:59:46 +00:00
Roland Shoemaker
0826b90172 internal/cpu: add DIT detection on arm64
Add support for detecting the DIT feature on ARM64 processors. This
mirrors https://go.dev/cl/597377, but using the platform specific
semantics.

Updates #66450

Change-Id: Ia107e3e3369de7825af70823b485afe2f587358e
Reviewed-on: https://go-review.googlesource.com/c/go/+/598335
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2024-07-24 18:45:33 +00:00
Roland Shoemaker
b5c2b1ec13 cmd/internal/obj/arm64: support MSR DIT
Set the right instruction bits in asmout in order
to allow using MSR with DIT and an immediate
value. This allows us to avoid using an
intermediary register when we want to set DIT
(unsetting DIT already worked with the zero
register).

Ref: https://developer.arm.com/documentation/ddi0602/2024-06/Base-Instructions/MSR--immediate---Move-immediate-value-to-special-register-?lang=en
Change-Id: Id049a0b4e0feb534cea992553228f9b5e12ddcea
Reviewed-on: https://go-review.googlesource.com/c/go/+/597595
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2024-07-24 18:45:14 +00:00
apocelipes
c0eac35a4c bytes,strings,unicode/utf16: use slices to clean up tests
Replace reflect.DeepEqual with slices.Equal, which is much faster.
Remove some redundant helper functions.

Change-Id: I51b32a3d0c3fc5ad0d3b6ff0dd03f39c507e5762
GitHub-Last-Rev: e21f46d4a0
GitHub-Pull-Request: golang/go#67609
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2024-07-24 18:45:08 +00:00
Damien Neil
910e6b5fae os: document CopyFS behavior for symlinks in destination
Also clarify the permissions of created files,
and note that CopyFS will not overwrite files.

Update a few places in documentation to use 0oXXX for octal consts.

For #62484

Change-Id: I208ed2bde250304bc7fac2b93963ba57037e791e
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2024-07-24 18:24:15 +00:00
apocelipes
074f2761b5 crypto/x509,embed: use slices to clean up tests
Replace reflect.DeepEqual with slices.Equal, which is much faster.

Change-Id: Ia93cc153d1f71ce92656129843be8dadcefbbca3
GitHub-Last-Rev: 0af0cc4205
GitHub-Pull-Request: golang/go#67610
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2024-07-24 16:44:15 +00:00
guoguangwu
c7ea20195a cmd/compile: fix typo in comment
Change-Id: Ied098312399d2d6557ebf0ee294ca0e71dfa677b
GitHub-Last-Rev: 82f914e857
GitHub-Pull-Request: golang/go#68565
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2024-07-24 15:39:28 +00:00
Koichi Shiraishi
3637aa3e1e internal/trace/event: fix typo in comment
Change-Id: Ia191daf8e748f17dcea6038166504fb50e7ddb0d
Reviewed-on: https://go-review.googlesource.com/c/go/+/589535
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2024-07-24 15:39:19 +00:00
Bryan Boreham
c5430dc1d8 regexp: allow patterns with no alternates to be one-pass
Check whether a regex has any 'alt' instructions before rejecting it as one-pass.
Previously `^abc` would run the backtrack matcher.

I tried to make the comment match what the code does now.

Updates #21463

```
name                            old time/op    new time/op    delta
Find-8                             167ns ± 1%     170ns ± 3%     ~     (p=0.500 n=5+5)
FindAllNoMatches-8                88.8ns ± 5%    87.3ns ± 0%     ~     (p=0.095 n=5+5)
FindString-8                       166ns ± 3%     164ns ± 0%     ~     (p=0.063 n=5+5)
FindSubmatch-8                     191ns ± 1%     191ns ± 0%     ~     (p=0.556 n=4+5)
FindStringSubmatch-8               183ns ± 0%     182ns ± 0%   -0.43%  (p=0.048 n=5+5)
Literal-8                         50.3ns ± 0%    50.1ns ± 0%   -0.40%  (p=0.016 n=5+4)
NotLiteral-8                       914ns ± 0%     927ns ± 7%     ~     (p=0.730 n=5+5)
MatchClass-8                      1.20µs ± 1%    1.22µs ± 6%     ~     (p=0.738 n=5+5)
MatchClass_InRange-8              1.20µs ± 6%    1.21µs ± 6%     ~     (p=0.548 n=5+5)
ReplaceAll-8                       796ns ± 0%     792ns ± 0%   -0.51%  (p=0.032 n=5+5)
AnchoredLiteralShortNonMatch-8    41.0ns ± 2%    34.2ns ± 2%  -16.47%  (p=0.008 n=5+5)
AnchoredLiteralLongNonMatch-8     53.3ns ± 0%    34.3ns ± 3%  -35.74%  (p=0.008 n=5+5)
AnchoredShortMatch-8              74.0ns ± 2%    75.8ns ± 0%   +2.46%  (p=0.032 n=5+4)
AnchoredLongMatch-8                146ns ± 3%      76ns ± 1%  -48.12%  (p=0.008 n=5+5)
OnePassShortA-8                    424ns ± 0%     423ns ± 0%     ~     (p=0.222 n=5+4)
NotOnePassShortA-8                 373ns ± 1%     375ns ± 2%     ~     (p=0.690 n=5+5)
OnePassShortB-8                    315ns ± 2%     308ns ± 0%   -2.12%  (p=0.008 n=5+5)
NotOnePassShortB-8                 244ns ± 3%     239ns ± 0%     ~     (p=0.476 n=5+5)
OnePassLongPrefix-8               61.6ns ± 2%    60.9ns ± 0%   -1.13%  (p=0.016 n=5+4)
OnePassLongNotPrefix-8             236ns ± 3%     230ns ± 0%     ~     (p=0.143 n=5+5)
```

Change-Id: I8a94b53bc761cd7ec89923c905ec8baaaa58a5fd
GitHub-Last-Rev: e9e0c29b74
GitHub-Pull-Request: golang/go#48748
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2024-07-24 01:01:48 +00:00
Ian Lance Taylor
8659ad972f encoding/json: rewrite interface{} to any
For #49884

Change-Id: I1623201c47c820a152773d2f43d0072a1466d3bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/588118
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2024-07-24 00:40:06 +00:00
Cuong Manh Le
72cc7699f8 test: add test cases for local not-in-heap types
Follow up review in CL 597535.

Updates #54846

Change-Id: Idf586552a22bbc6710c0888f046df0a5d1f0ce4a
Reviewed-on: https://go-review.googlesource.com/c/go/+/597537
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2024-07-24 00:11:49 +00:00
Cuong Manh Le
b73875ff6c test: re-enabled fixedbugs/notinheap.go test
By using cgo.Incomplete to represent not-in-heap type.

While at it, also removing the type conversions tests, since they could
not be present without //go:notinheap pragma.

Fixes #54846

Change-Id: I5ee2a4b6498d4100c9770ed7bd62f52623e42526
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2024-07-24 00:11:47 +00:00
Cuong Manh Le
88833c9045 cmd/compile: restore not-in-heap check for map/channel type
CL 388538 removed unused -G=0 node types.

However, the code for checking not-in-heap types for map and channel
type was also removed, which is likely not intentional.

This CL restores the check, porting removed code to noder.

Updates #54846

Change-Id: I2995836b90e36d2684197fefc9829fddfffe8585
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2024-07-24 00:11:44 +00:00
Cuong Manh Le
864aa86448 cmd/compile: run checkbce after fuseLate pass
So the bounds check which are eliminated during late fuse pass could be
detected correctly.

Fixes #67329

Change-Id: Id7992fbb8c26e0d43e7db66a0a3a2c0d9ed937a8
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2024-07-23 23:50:30 +00:00
Cuong Manh Le
3f9360345c cmd/compile: prevent un-necessary wrapping in switch statement
Follow up discussion in CL 594575.

The wrapping in "any" is only necessary if either casType or tagType is
an interface, as "==" in this situation is implemented by upconverting
to an interface anyway.

Change-Id: I73da771d25685a23eec612ac696965c892db4764
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2024-07-23 23:49:48 +00:00
Dmitri Shuralyov
d55253f5dd cmd/pprof: update vendored github.com/google/pprof
Pull in the latest published version of github.com/google/pprof
as part of the continuous process of keeping Go's dependencies
up to date.

For #36905.

[git-generate]
cd src/cmd
go get github.com/google/pprof@v0.0.0-20240722153945-304e4f0156b8
go mod tidy
go mod vendor

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2024-07-23 23:05:51 +00:00
Dmitri Shuralyov
0d5fc4e1f0 cmd/go: fix TestNewReleaseRebuildsStalePackagesInGOPATH for runtime move
CL 600436 moved runtime/internal/sys to internal/runtime/sys and updated
TestNewReleaseRebuildsStalePackagesInGOPATH in part accordingly. This is
the other part that's needed for it to pass.

For #65355.

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2024-07-23 23:05:48 +00:00
Keith Randall
c18ff29295 cmd/compile: make sync/atomic AND/OR operations intrinsic on amd64
Update #61395

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2024-07-23 21:29:38 +00:00
Keith Randall
dbfa3cacc7 cmd/compile: fix typing of atomic logical operations
For atomic AND and OR operations on memory, we currently have two
views of the op. One just does the operation on the memory and returns
just a memory. The other does the operation on the memory and returns
the old value (before having the logical operation done to it) and
memory.

Update #61395

These two type differently, and there's currently some confusion in
our rules about which is which. Use different names for the two
different flavors so we don't get them confused.

Change-Id: I07b4542db672b2cee98169ac42b67db73c482093
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2024-07-23 21:27:54 +00:00
Keith Randall
df009eead9 cmd/cgo: error on multiple incompatible function declarations
When there are multiple declarations of a function, ensure that
those declarations at least agree on the size/alignment of arguments
and return values.

It's hard to be stricter given existing code and situations where
arguments differ only by typedefs. For instance:
    int usleep(unsigned);
    int usleep(useconds_t);

Fixes #67699.

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2024-07-23 21:11:11 +00:00
Keith Randall
b0f7be3cfa cmd/compile: don't treat an InlMark as a read during deadstore
An InlMark "read" can't make an otherwise dead store live. Without this
CL, we sometimes zero an object twice in succession because we think
there is a reader in between.

Kind of challenging to make a test for this. The second zeroing has the
same instruction on the same line number, so codegen tests can't see it.

Fixes #67957

Change-Id: I7fb97ebff50d8eb6246fc4802d1136b7cc76c45f
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2024-07-23 20:55:24 +00:00
Keith Randall
f66db49976 cmd/compile: store constant floats using integer constants
x86 is better at storing constant ints than constant floats.
(It uses a constant directly in the instruction stream, instead of
loading it from a constant global memory.)

Noticed as part of #67957

Change-Id: I9b7b586ad8e0fe9ce245324f020e9526f82b209d
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2024-07-23 20:53:57 +00:00