Iterate through the actual, possibly defined types of constraints
when type-checking generic conversions, not the underlying types.
For #47150.
Change-Id: Ia7af313bf46d6f6b0ad5292ff793b030b8e2d3d8
Reviewed-on: https://go-review.googlesource.com/c/go/+/357333
Trust: Robert Griesemer <gri@golang.org>
Run-TryBot: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is a clean port of CL 357291 from x/tools.
For #46586
Change-Id: Ib22087ae7fe8477d368acd230b263b83cdad4d36
Reviewed-on: https://go-review.googlesource.com/c/go/+/357429
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
In CL 327872, there's a fix for crawling of embeddable types directly
reached by the user, so all of its methods need to be re-exported. But
we missed the cased when an un-exported type may be reachable by
embedding in exported type. Example:
type t struct {}
func (t) M() {}
func F() interface{} { return struct{ t }{} }
We generate the wrapper for "struct{ t }".M, and when inlining call to
"struct{ t }".M makes "t.M" reachable.
It works well, and only be revealed in CL 327871, when we changed
methodWrapper to always call inline.InlineCalls, thus causes the crash
in #49016, which involve dot type in inlined function.
Fixes#49016
Change-Id: If174fa5575132da5cf60e4bd052f7011c4e76c5d
Reviewed-on: https://go-review.googlesource.com/c/go/+/356254
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Remove a bit of dead code from the Go object file reader (io.ReaderAt
no longer needed in goobj.Reader).
Change-Id: I04150d37fb90b59c9dbe930878d4dd21cdcd7ca7
Reviewed-on: https://go-review.googlesource.com/c/go/+/357309
Trust: Than McIntosh <thanm@google.com>
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Minor leftover from CL 74851.
Change-Id: I1b56afcde3c505ba77a0f79e8ae9b01000362298
GitHub-Last-Rev: 87e97571a5
GitHub-Pull-Request: golang/go#48942
Reviewed-on: https://go-review.googlesource.com/c/go/+/355629
Reviewed-by: Robert Griesemer <gri@golang.org>
Trust: Daniel Martí <mvdan@mvdan.cc>
Trust: Alexander Rakoczy <alex@golang.org>
When invoking check.binary for assignment operation, the expression will
be nil, thus for printing the assignment operation error message, we
need to reconstruct the statement from lhs, op, rhs.
Fixes#48472
Change-Id: Ie38c3dd8069b47e508968d6e43cedcf7536559ef
Reviewed-on: https://go-review.googlesource.com/c/go/+/357229
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
Change-Id: I2fca7a801c85ed93c002c23bfcb0cf9593f1bdf4
Reviewed-on: https://go-review.googlesource.com/c/go/+/356571
Trust: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
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The "" stand-in for the current package needs to be substituted
in more places when importing, because of generics.
""..dict.conv4["".MyString]
when imported in main and then exported, this becomes
a..dict.conv4["".MyString]
and then the linker makes that into
a..dict.conv4[main.MyString]
Which isn't correct. We need to replace on import not just
function names, but also globals, which this CL does.
Change-Id: Ia04a23b5ffd60aeeaba72c807f69261105670f8e
Reviewed-on: https://go-review.googlesource.com/c/go/+/356570
Trust: Keith Randall <khr@golang.org>
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This makes it easier to run tests on existing generic code that is
not using the `.go2` ending currently used by type checker tests.
For #49074.
Change-Id: I1501463c55dbe1d709918786e1a43b6d1bf1629a
Reviewed-on: https://go-review.googlesource.com/c/go/+/357050
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This is the port of CL 356809 for Value.Pointer to fix the mismatch of
methodValueCall code pointer.
Change-Id: I080ac41b94b44d878cd5896207a76a28c57fd48b
Reviewed-on: https://go-review.googlesource.com/c/go/+/356950
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Cherry Mui <cherryyz@google.com>
CL 350691 added Value.UnsafePointer and make Value.Pointer call it
internally. It has a downside that Value.Pointer can now eligible to be
inlined, thus making un-intentional side effect, like the test in
fixedbugs/issue15329.go becomes flaky.
This CL restore Value.Pointer original implementation, pre CL 350691,
with the deprecation TODO removed.
Fixes#49067
Change-Id: I735af182f8e729294333ca906ffc062f477cfc99
Reviewed-on: https://go-review.googlesource.com/c/go/+/356949
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GOWORK will be set to the go.work file's path, if in workspace mode
or will be empty otherwise.
For #45713Fixes#48589
Change-Id: I163ffaf274e0a41469c1f3b8514d6f90e20423b0
Reviewed-on: https://go-review.googlesource.com/c/go/+/355689
Trust: Michael Matloob <matloob@golang.org>
Trust: Daniel Martí <mvdan@mvdan.cc>
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Add support for replace directives in the go.work file. If there are
conflicting replaces in go.mod files, suggest that users add an
overriding replace in the go.work file.
Add HighestReplaced to MainModules so that it accounts for the
replacements in the go.work file.
(Reviewers: I'm not totally sure that HighestReplace is computed
correctly. Could you take a closer look at that?)
For #45713
Change-Id: I1d789219ca1dd065ba009ce5d38db9a1fc38ba83
Reviewed-on: https://go-review.googlesource.com/c/go/+/352812
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errors.Is internally unwraps the error until the error matches the
target. Because of this, a user-authored Is method on an error type
need not call errors.Unwrap on itself or the target, because that would
make the unwrapping operation O(N^2). It is a subtle detail to remind
authors for resource efficiency reasons.
Change-Id: Ic1ba59a5bdbfe2c7cb51a2cba2537ab6de4a13ff
Reviewed-on: https://go-review.googlesource.com/c/go/+/356789
Reviewed-by: Jean de Klerk <deklerk@google.com>
Reviewed-by: Damien Neil <dneil@google.com>
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Trust: Damien Neil <dneil@google.com>
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This change adds support for the reg ABI to the Index and Count
functions for ppc64/ppc64le.
Most Index and Count benchmarks show improvement in performance on
POWER9 with this change. Similar numbers observed on POWER8 and POWER10.
name old time/op new time/op delta
Index/32 71.0ns ± 0% 67.9ns ± 0% -4.42% (p=0.001 n=7+6)
IndexEasy/10 17.5ns ± 0% 17.2ns ± 0% -1.30% (p=0.001 n=7+7)
name old time/op new time/op delta
Count/10 26.6ns ± 0% 25.0ns ± 1% -6.02% (p=0.001 n=7+7)
Count/32 78.6ns ± 0% 74.7ns ± 0% -4.97% (p=0.001 n=7+7)
Count/4K 5.03µs ± 0% 5.03µs ± 0% -0.07% (p=0.000 n=6+7)
CountEasy/10 26.9ns ± 0% 25.2ns ± 1% -6.31% (p=0.001 n=7+7)
CountSingle/32 11.8ns ± 0% 9.9ns ± 0% -15.70% (p=0.002 n=6+6)
Change-Id: Ibd146c04f8107291c55f9e6100b8264dfccc41ae
Reviewed-on: https://go-review.googlesource.com/c/go/+/355509
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
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uint64 is guaranteed by the compiler to be aligned on 64-bit archs.
By using uint64+uint32 instead of [3]uint32 we can make use of the
guaranteed alignment to avoid the run-time alignment check.
On linux/amd64:
name old time/op new time/op delta
WaitGroupUncontended-4 8.84ns ± 3% 7.62ns ± 4% -13.72% (p=0.000 n=17+18)
WaitGroupAddDone-4 66.8ns ± 3% 45.9ns ± 2% -31.31% (p=0.000 n=20+18)
WaitGroupAddDoneWork-4 79.2ns ± 1% 56.6ns ± 1% -28.54% (p=0.000 n=17+20)
WaitGroupWait-4 2.83ns ± 2% 2.58ns ± 2% -9.05% (p=0.000 n=18+20)
WaitGroupWaitWork-4 16.8ns ± 6% 16.5ns ± 6% ~ (p=0.072 n=20+18)
WaitGroupActuallyWait-4 263ns ± 2% 261ns ± 5% ~ (p=0.063 n=18+20)
Change-Id: I314340f2ed8a47d8b9c15f8a3b07e41f252f4831
Reviewed-on: https://go-review.googlesource.com/c/go/+/189837
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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This change also does some refactors around how
we prevent many (*F) methods from being called
inside (*F).Fuzz. Previously, there was a lot of
comment/code duplication, which was going to be
difficult to maintain and brittle. The refactor
lessens this duplication.
Previously, the methods Log, Logf, Failed, Name and
Skipped were the only (*common) methods that were
allowed to be called inside (*F).Fuzz. After this
change, Failed and Name are still allowed, but
Log, Logf, and Skipped are not (t.Log, t.Logf, or
t.Skipped should be used instead).
Fixes#48988
Change-Id: I4066247d551ea1908e8a2ca2889509fc68e3bb44
Reviewed-on: https://go-review.googlesource.com/c/go/+/356151
Trust: Katie Hockman <katie@golang.org>
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Reviewed-by: Jay Conrod <jayconrod@google.com>
This is a clean port of CL 356533 from go/types to types2.
Fixes#49043.
Change-Id: If389b94ece28042b0c8b436959dd21f26147a144
Reviewed-on: https://go-review.googlesource.com/c/go/+/356517
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is a clean port of CL 356490 from go/types to types2.
Fixes#48703.
Fixes#48974.
Change-Id: I08c0db0b92250cbb043325541b21a577726b40ca
Reviewed-on: https://go-review.googlesource.com/c/go/+/356515
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This is an essentially clean port of CL 356489 from go/types to types2,
with minor adjustments due to the different AST packages and error
reporting.
Fixes#47990.
Change-Id: I52187872474bfc1fb49eb77905f22fc820b7295b
Reviewed-on: https://go-review.googlesource.com/c/go/+/356514
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Robert Findley <rfindley@google.com>
This CL addresses the 2nd part of the issue below.
- For types2, now use the same error messages as the compiler in this case.
- Make the mechanism for reporting clarifying error messages handle the case
where we don't have additional position information.
- Provide context information (type assertion vs type switch).
Fixes#49005.
Change-Id: I4eeaf4f0c3f2f8735b63993778f58d713fef21ee
Reviewed-on: https://go-review.googlesource.com/c/go/+/356512
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Robert Findley <rfindley@google.com>
CL 322350 changed how to take address of assembly functions, using
abi.FuncPCABI0 intrinsic. But we forgot to update the code in
Value.UnsafePointer (was Value.Pointer) to reflect that change.
This CL fixes that bug, and also add a test to make sure the code
pointer is in sync.
Change-Id: I05ae7df31c706583a0f374d8af027066528f5ceb
Reviewed-on: https://go-review.googlesource.com/c/go/+/356809
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In CL 354670, I copied some existing rules for convenience but forgot
to update the last rule which broke `GOAMD64=v3 ./make.bat`
Revive CL 354670
Change-Id: Ic1e2047c603f0122482a4b293ce1ef74d806c019
Reviewed-on: https://go-review.googlesource.com/c/go/+/356810
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Keith Randall <khr@golang.org>
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(Temporarily, until they can be fixed.)
For #49046
For #49047
Change-Id: Ib580a5e45a0955aabdfc1899ed38a262a37f66ab
Reviewed-on: https://go-review.googlesource.com/c/go/+/356649
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On riscv64, the JAL instruction is only capable of reaching +/-1MB. In the case where
a single function and its trampolines exceeds this size, it is possible that the JAL
is unable to reach the trampoline, which is laid down after the function text. In the
case of large functions, switch back to using a AUIPC+JALR pairs rather than using
trampolines.
Fixes#48791
Change-Id: I119cf3bc20ce4933a9b7ab41a8e514437c6addb9
Reviewed-on: https://go-review.googlesource.com/c/go/+/356250
Trust: Joel Sing <joel@sing.id.au>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Fixes#37595
Change-Id: I83e5f6105748a0a9238322a4f7ec4b0bbf61a263
Reviewed-on: https://go-review.googlesource.com/c/go/+/348394
Reviewed-by: Daniel Martí <mvdan@mvdan.cc>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Daniel Martí <mvdan@mvdan.cc>
Trust: Cherry Mui <cherryyz@google.com>
ticks might be same after tick division, although the real cputicks
is linear growth
Fixes#46737
Change-Id: I1d98866fbf21b426c6c1c96cc9cf802d7f440f18
Reviewed-on: https://go-review.googlesource.com/c/go/+/330849
Trust: Meng Zhuo <mzh@golangcn.org>
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The branch test only takes a few seconds so enable it in short mode. Also fix a
typo that currently prevents the code from compiling.
Change-Id: I25fc646b002a66c042c61fb1f56d5efa8e47903c
Reviewed-on: https://go-review.googlesource.com/c/go/+/356249
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Even after type-checking the RHS of a type declaration, we may not yet
be able to expand, if the RHS is itself an instance (see #49043).
We can instead rely on the mechanisms we have in place for delayed
expansion.
Fixes#49043
Change-Id: Ibffa4c1b1163c824b5c7e151aaac35f3e8c84ec7
Reviewed-on: https://go-review.googlesource.com/c/go/+/356533
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Rather than using Checker.later in newNamed, add a Checker.defTypes
field to track named types that have been created during type-checking,
and use this to expand named types as a final phase in type checking.
We have encountered several bugs related to infinite recursion while
expanding named types, because (I would argue) we have two conflicting
requirements in the type checker: ensuring that we eventually collapse
underlying chains, and yet allowing lazy substitution of the underlying
type in instances. The former is necessary for correctness, and to
ensure that we detect cycles during the type-checking pass. The latter
is necessary to allow infinitely expanding patterns of instances through
underlying or method definitions.
I believe this CL reconciles these conflicting requirements, by creating
a boundary between types that are encountered in the source during
type checking, and instances that are created by recursive evaluation.
At the end of the type checking pass, Checker.defTypes should contain
all possible origin types for instantiation. Once we compute the true
underlying for these origin types, any remaining instances that are
unresolved are guaranteed to have an origin with a valid underlying.
Therefore, we can return from the type-checking pass without calling
under() for these remaining instances.
Fixes#48703Fixes#48974
Change-Id: I1474f514e2ab71c1ad4c3704fe32bfba11d59394
Reviewed-on: https://go-review.googlesource.com/c/go/+/356490
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Add constraint type inference for type instances, to be consistent with
inference of function values.
Fixes#47990
Change-Id: Ib99b5215cb2da5c10badc4de7e9e60ca0e48489f
Reviewed-on: https://go-review.googlesource.com/c/go/+/356489
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When (*bufio.Writer).ReadFrom is called with a partially filled buffer,
fill out and flush the buffer and then call the underlying writer's
ReadFrom method if present.
Fixes#44815.
Change-Id: I15b3ef0746d0d60fd62041189a9b9df11254dd29
Reviewed-on: https://go-review.googlesource.com/c/go/+/340530
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It was noticed through some other investigation that BitLen32
was not generating the best code and found that it wasn't recognized
as an intrinsic. This corrects that and enables the test for PPC64.
Change-Id: Iab496a8830c8552f507b7292649b1b660f3848b5
Reviewed-on: https://go-review.googlesource.com/c/go/+/355872
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This change removes the js.Wrapper interface for performance reasons.
See proposal #44006 for details.
This is a breaking change, but syscall/js is exempt from Go's
compatibility promise.
Fixes#44006
Change-Id: I968cd14b1e61cc72ea9f84240b6bd29e8b8ae673
Reviewed-on: https://go-review.googlesource.com/c/go/+/356430
Trust: Richard Musiol <neelance@gmail.com>
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
This changes Go, to remove this unused field on the `Tree` struct. Which seems to replaced by the non-private field `Mode`.
Change-Id: I5b384424cf60aa0af36eb8aad1d8db3f99b9838e
GitHub-Last-Rev: 4b033f967b
GitHub-Pull-Request: golang/go#48028
Reviewed-on: https://go-review.googlesource.com/c/go/+/345789
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Allowing eliminates a class of possible misuse of unsafe.Pointer, and
allow callers to migrate from Value.Addr and Value.Pointer, thus they
can be now deprecated.
Fixes#40592
Change-Id: I798e507c748922cac5cc1c1971c1b2cc7095a068
Reviewed-on: https://go-review.googlesource.com/c/go/+/350691
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The doc mentions that "UnsafeAddr returns a _pointer_ to v's data", but
it returns a uintptr instead, which don't have pointer semantic.
Change-Id: I557d5597cbc485356ca803eb496a99d6db8c63ba
Reviewed-on: https://go-review.googlesource.com/c/go/+/350690
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The compiler refuses to do spectre mitigation on 386, but the
assembler doesn't. Fix that.
Fixes#49006
Change-Id: I887b6f7ed7523a47f463706f06ca4c2c6e828b6b
Reviewed-on: https://go-review.googlesource.com/c/go/+/356190
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After CL 349012 and CL 350911, we can fully handle these
labeled statements, so we can allow them when inlining.
Updates #14768
Change-Id: I0ab3fd3f8d7436b49b1aedd946516b33c63f5747
Reviewed-on: https://go-review.googlesource.com/c/go/+/355497
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Reviewed-by: David Chase <drchase@google.com>
Trust: Dan Scales <danscales@google.com>
