In TestSegv, the t.Run closure captures the loop variable 'test'. Since
the subtest calls t.Parallel, the parent test is allowed to keep
running, changing the loop variable and thus changing the value of
'test' in the subtest.
Change-Id: I021ddc50304de08a341e6ffe486aa54e573d3b94
Reviewed-on: https://go-review.googlesource.com/c/go/+/339911
Trust: Michael Pratt <mpratt@google.com>
Run-TryBot: Michael Pratt <mpratt@google.com>
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Reviewed-by: Austin Clements <austin@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
CL 349010 ported the fix from CL 349009, but forgot to remove the
outdated comment from old solution. This CL removes that one.
Change-Id: Ia401295e9d0984f4a088ddce5db09d306bfd89b6
Reviewed-on: https://go-review.googlesource.com/c/go/+/349729
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 Findley <rfindley@google.com>
CL 201737 dropped the use of IN_KUBERNETES in tests, but it looks like
it did not catch all occurrences.
For #12815
For #34956
Change-Id: I72b89bfb850ba2890e9e6aa39b87167291ab7e9f
Reviewed-on: https://go-review.googlesource.com/c/go/+/349789
Trust: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Likewise, reorder register numbers such that extended mnemonics which
use FPR arguments can be transparently encoded as a VSR argument for
the move to/from VSR class of instructions. Specifically, ensure the
following holds for all FPx and VRx constants: FPRx & 63 == x, and
VRx & 63 == x + 32.
This simplifies encoding machine instructions, and likewise helps
ppc64 assembly writers to avoid hokey workarounds when switching from
vector to vector-scalar register notation. Notably, many VSX
instructions are limited to vector operands due to encoding
restrictions.
Secondly, this explicitly rejects dubious usages of the m[tf]vsr
family of instructions which had previously been accepted.
* Reject two GPR arguments for non-MTVSRDD opcodes. These
have no defined behavior today, and may set RFU bits. e.g
MTVSRD R1, R2, VS1
* Reject FPR destinations for MTVSRDD, and only accept with two GPR
arguments. This copies two GPR values into either half of a VSR. e.g
MTVSRDD R1, R2, F1
MTVSRDD R1, F1
Change-Id: If13dd88c3791d1892dbd18ef0e34675a5285fff9
Reviewed-on: https://go-review.googlesource.com/c/go/+/342929
Run-TryBot: Paul Murphy <murp@ibm.com>
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Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
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This is a port of CL 349009 to typecheck importer.
Fixes#48306
Change-Id: Iec3f078089346bd85f0ab739896e079940325011
Reviewed-on: https://go-review.googlesource.com/c/go/+/349011
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Dan Scales <danscales@google.com>
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This is port of CL 349009 to go/internal/gcimporter.
Updates #48280
Change-Id: I7d40d8b67333538ca58fe012535d54e891d0ed16
Reviewed-on: https://go-review.googlesource.com/c/go/+/349010
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Reviewed-by: Robert Findley <rfindley@google.com>
The importReader always reads type parameter before declaring type stub
declaration. Thus, for recursive type, the type parameter is going to be
read twice, cause the bound more than once error.
To fix this, only read the type parameter after declaring stub obj, thus
r.doDecl can see the type was already inserted and terminate the
recursive call earlier.
Fixes#48280
Change-Id: I272e2f214f739fb8ec71a8628ba297477e1b7755
Reviewed-on: https://go-review.googlesource.com/c/go/+/349009
Trust: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Trust: Dan Scales <danscales@google.com>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
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Change-Id: I519b8021fa79dccc5c0ee79134547491116fc4cc
GitHub-Last-Rev: 48869f5434
GitHub-Pull-Request: golang/go#48071
Reviewed-on: https://go-review.googlesource.com/c/go/+/346231
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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This change is functionally equivalent, but reduces reliance on unsafe
features. This would allow GopherJS to avoid an additional patch to the
standard library we'd have to maintain in order to remain compatible
with Go 1.17+.
Change-Id: I4f113db0c572ec0b81ebfecf5a137145f6c8c41d
GitHub-Last-Rev: 94ebb393ba
GitHub-Pull-Request: golang/go#48346
Reviewed-on: https://go-review.googlesource.com/c/go/+/349469
Reviewed-by: Keith Randall <khr@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Keith Randall <khr@golang.org>
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CL 85215 added prose to provide some minimal intuition for the
definition of a "terminating statement". While the original definition
was perfectly fine, the added prose was actually incorrect: If the
terminating statement is a goto, it might jump to a labeled statement
following that goto in the same block (it could be the very next
statement), and thus a terminating statement does not in fact
"prevent execution of all statements that lexically appear after
it in the same block".
Rather than explaining the special case for gotos with targets that
are lexically following the goto in the same block, this CL opts for
a simpler approach.
Thanks to @3bodar (Github) for finding this.
Fixes#48323.
Change-Id: I8031346250341d038938a1ce6a75d3e687d32c37
Reviewed-on: https://go-review.googlesource.com/c/go/+/349172
Trust: Robert Griesemer <gri@golang.org>
Trust: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Reviewed-by: Rob Pike <r@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Fixes#48317
Change-Id: I756ae6253022870071004332dd8f49169307f7e6
Reviewed-on: https://go-review.googlesource.com/c/go/+/349013
Run-TryBot: Dan Scales <danscales@google.com>
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Reviewed-by: Dan Scales <danscales@google.com>
Trust: Dan Scales <danscales@google.com>
It looks like these are fixed on current tip after CL 84655
marked them to be skipped.
Fixes#23168
Change-Id: I0020e6da1042f723eb54186ef0fe925df5326230
Reviewed-on: https://go-review.googlesource.com/c/go/+/349250
Trust: Tobias Klauser <tobias.klauser@gmail.com>
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Reviewed-by: Than McIntosh <thanm@google.com>
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The floating point tests were all added into the Inequalities section,
instead of separated into Equalities vs Inequalities.
Rather than separate them, add a new floating point section.
Change-Id: I3713a5aff5850dcc0caf68a754633d695a03ded9
Reviewed-on: https://go-review.googlesource.com/c/go/+/349612
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Trust: Joe Tsai <joetsai@digital-static.net>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Joe Tsai <joetsai@digital-static.net>
Reviewed-by: Joe Tsai <joetsai@digital-static.net>
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CL 345486 introduced an optimization to reflect's map accesses
which is not quite correct. We can't use the optimized code if the
value type is >128 bytes.
See cmd/compile/internal/walk/walk.go:mapfast
Fixes#48357
Change-Id: I8e3c7858693083dd4393a8de48ca5fa47bab66f2
Reviewed-on: https://go-review.googlesource.com/c/go/+/349593
Trust: Keith Randall <khr@golang.org>
Trust: Joe Tsai <joetsai@digital-static.net>
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Trust: Martin Möhrmann <martin@golang.org>
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This test checks that we load the same graph regardless of the path to
the requested module in the workspace.
We currently don't. This will be fixed in a future change that redoes
workspace mode's usage of the Requirements structure.
For #45713
Change-Id: Id02cbb60a38619d840dbf1e70173ce853c0c167a
Reviewed-on: https://go-review.googlesource.com/c/go/+/348649
Trust: Michael Matloob <matloob@golang.org>
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The new strings.Clone function copies the input string
without the returned cloned string referencing the
input strings memory.
goarch: amd64
cpu: Intel(R) Core(TM) i5-1038NG7 CPU @ 2.00GHz
name time/op
Clone-8 24.2ns ± 2%
name alloc/op
Clone-8 48.0B ± 0%
name allocs/op
Clone-8 1.00 ± 0%
Update #45038Fixes#40200
Change-Id: Id9116c21c14328ec3931ef9a67a2e4f30ff301f9
Reviewed-on: https://go-review.googlesource.com/c/go/+/345849
Trust: Martin Möhrmann <martin@golang.org>
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Minor code cleanup to get rid of a few unused parameters and return
values in the linker's dwarf generation code. No functional changes.
Change-Id: I1a68ebe0f08d8d32ca7adfdd2fb9db573a4fd5f5
Reviewed-on: https://go-review.googlesource.com/c/go/+/332070
Trust: Than McIntosh <thanm@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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For #48332
Change-Id: I708eb3e8f3f386f03210b7117d9ab8b0be2125bb
Reviewed-on: https://go-review.googlesource.com/c/go/+/349591
Trust: Jay Conrod <jayconrod@google.com>
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For Identical an u.nify, only type arguments and pointer identity is
needed.
Change-Id: Id4018d2a53044fa20fd26d28890f28b37b6d6d70
Reviewed-on: https://go-review.googlesource.com/c/go/+/349409
Trust: Robert Findley <rfindley@google.com>
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Reviewed-by: Robert Griesemer <gri@golang.org>
This adds a new Writer.AvailableBuffer method that returns
an empty buffer with a possibly non-empty capacity for use
with append-like APIs.
The typical usage pattern is something like:
b := bw.AvailableBuffer()
b = appendValue(b, v)
bw.Write(b)
It allows logic combining append-like APIs with bufio.Writer to avoid
needing to allocate and manage buffers themselves and allows the
append-like APIs to directly write into the buffer for a bufio.Writer.
Fixes#47527
Change-Id: I9cd169f3f8e8c7cd40818caf3daf1944c826fc66
Reviewed-on: https://go-review.googlesource.com/c/go/+/345569
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Over 80% of all Go map types use a string as the key.
The Go runtime already has a specialized implementation for such maps
in runtime/map_faststr.go. However, the Go reflection implementation
has not historically made use of that implementation.
This CL plumbs the appropriate logic to be accessible from Go reflection
so that it can benefit as well.
name old time/op new time/op delta
Map/StringKeys/MapIndex-4 4.65us ± 5% 2.95us ± 3% -36.50% (p=0.016 n=4+5)
Map/StringKeys/SetMapIndex-4 7.47us ± 5% 5.27us ± 2% -29.40% (p=0.008 n=5+5)
Map/Uint64Keys/MapIndex-4 3.79us ± 3% 3.75us ± 2% ~ (p=0.548 n=5+5)
Map/Uint64Keys/SetMapIndex-4 6.13us ± 3% 6.09us ± 1% ~ (p=0.746 n=5+5)
Change-Id: I5495d48948d8caf2d004a03ae1820ab5f8729670
Reviewed-on: https://go-review.googlesource.com/c/go/+/345486
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For batch allocation reasons, it would be useful to nest a
bufio.Reader or bufio.Writer in a struct as a value,
rather than a pointer. When the Reset method is called,
have it use the default buffer size if the buffer is nil.
Fixes#45374
Change-Id: I80df18a13575431428a42ed150a1579de1282637
Reviewed-on: https://go-review.googlesource.com/c/go/+/345570
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I spent some time looking through all the changes we've made to
testing and cmd/go/... on the dev.fuzz branch. CL 348469 shows those
differences. This CL fixes comments, TODOs, and simplifies code in a
few places. It also implements F.Setenv.
Change-Id: I6fd7ef5fbd0bb6055e38d56cb42bddcf6f4ffdaf
Reviewed-on: https://go-review.googlesource.com/c/go/+/349109
Trust: Jay Conrod <jayconrod@google.com>
Trust: Katie Hockman <katie@golang.org>
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If someone manually adds/alters a corpus file to add
extra spacing or remove the final newline, the file
can still be decoded. However, this change ensures that
the fuzzing engine correctly writes the final newline.
Fixesgolang/go#48130
Change-Id: Ib5556d4a6e4e0bfd9bc2edab357b7c25bedfd176
Reviewed-on: https://go-review.googlesource.com/c/go/+/349055
Trust: Katie Hockman <katie@golang.org>
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Change-Id: I33bde4835d3b83fafd55beea483f6236c4c62840
Reviewed-on: https://go-review.googlesource.com/c/go/+/338990
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Trust: Than McIntosh <thanm@google.com>
The original error is currently discarded, and that makes it difficult
to know what failed, in case we want to retry only certain errors.
Change-Id: Id7e927ec242464249c4dfa5cda0f264adef3c898
Reviewed-on: https://go-review.googlesource.com/c/go/+/317851
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This will spare anyone who hits it having to search for the workaround.
Change-Id: Iff0d449212f2675ac78e30ae5ffc8efb4d924088
Reviewed-on: https://go-review.googlesource.com/c/go/+/334611
Trust: Josh Bleecher Snyder <josharian@gmail.com>
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Updates handling of go test flags -run and -bench to give alternation
precendence over the / delimiter. Currently, `A/B|C/D` is effectively
`A/(B|C)/D` - with this change, it changes to effectively `(A/B)|(C/D)`.
Fixes#39904
Change-Id: Iebe5efd8d91c72eed6351bd63b4689b0fcb0ed0f
Reviewed-on: https://go-review.googlesource.com/c/go/+/343883
Run-TryBot: Ian Lance Taylor <iant@golang.org>
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When parsing a type parameter declaration, parts of the code still
expected a ) as closing token. Use the correct follow token ) or ]
depending on parameter list kind.
Also, consistently use tokstring (not tok.String()) for user-facing
(error) messages.
Follow-up on comment in CL 348730.
For #43527.
Change-Id: Ib1d4feb526771a1668a54c3bb7a671f6c8a65940
Reviewed-on: https://go-review.googlesource.com/c/go/+/348742
Trust: Robert Griesemer <gri@golang.org>
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Reviewed-by: Robert Findley <rfindley@google.com>
We tend to set div class with the line number in HTML AST nodes. So that
the AST nodes can be highlighted with corresponding source and ssa ir.
The pure AST text dump is created first. And then it is parsed and
written to the HTML file.
CL 275785 changed the format of the line information in AST node dump,
which makes the HTMLWriter fail to parse the line information.
This CL updates the code in HTMLWriter to align with the format of AST
node dump.
Fix#48133
Change-Id: I2b56fc5e3e9771456d91f22caf23a427c235eb12
Reviewed-on: https://go-review.googlesource.com/c/go/+/347269
Reviewed-by: Cherry Mui <cherryyz@google.com>
Trust: Than McIntosh <thanm@google.com>
Also, add the FABSS and FABSD pseudo instructions to the assembler.
The compiler could use FSGNJX[SD] directly but there doesn't seem
to be much advantage to doing so and the pseudo instructions are
easier to understand.
Change-Id: Ie8825b8aa8773c69cc4f07a32ef04abf4061d80d
Reviewed-on: https://go-review.googlesource.com/c/go/+/348989
Trust: Michael Munday <mike.munday@lowrisc.org>
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Reviewed-by: Joel Sing <joel@sing.id.au>
In some rewrite rules for arm64 bitfield optimizations, the
bitfield lsb value and the bitfield width value are related
to datasize, some of them use datasize directly to check the
bitfield lsb value is valid, to get the bitfiled width value,
but some of them call isARM64BFMask() and arm64BFWidth()
functions. In order to be consistent, this patch changes them
all to use datasize.
Besides, this patch sorts the codegen test cases.
Run the "toolstash-check -all" command and find one inconsistent code
is as the following.
new: src/math/fma.go:104 BEQ 247
master: src/math/fma.go:104 BEQ 248
The above inconsistence is due to this patch changing the range of the
field lsb value in "UBFIZ" optimization rules from "lc+(32|16|8)<64" to
"lc<64", so that the following code is generated as "UBFIZ". The logical
of changed code is still correct.
The code of src/math/fma.go:160:
const uvinf = 0x7FF0000000000000
func FMA(a, b uint32) float64 {
ps := a+b
return Float64frombits(uint64(ps)<<63 | uvinf)
}
The new assembly code:
TEXT "".FMA(SB), LEAF|NOFRAME|ABIInternal, $0-16
MOVWU "".a(FP), R0
MOVWU "".b+4(FP), R1
ADD R1, R0, R0
UBFIZ $63, R0, $1, R0
ORR $9218868437227405312, R0, R0
MOVD R0, "".~r2+8(FP)
RET (R30)
The master assembly code:
TEXT "".FMA(SB), LEAF|NOFRAME|ABIInternal, $0-16
MOVWU "".a(FP), R0
MOVWU "".b+4(FP), R1
ADD R1, R0, R0
MOVWU R0, R0
LSL $63, R0, R0
ORR $9218868437227405312, R0, R0
MOVD R0, "".~r2+8(FP)
RET (R30)
Change-Id: I9061104adfdfd3384d0525327ae1e5c8b0df5c35
Reviewed-on: https://go-review.googlesource.com/c/go/+/265038
Trust: fannie zhang <Fannie.Zhang@arm.com>
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For #48301.
Change-Id: Ie5f57dcce86773c06c5140abf13a6cfff79eb323
Reviewed-on: https://go-review.googlesource.com/c/go/+/348743
Trust: Robert Griesemer <gri@golang.org>
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Add a missing nil check in the formatting code for expression
nodes. Matches the nil checks in the same code.
Fixes#48301.
Change-Id: Ia9bfd3535254a94996ee190b544d95e15433d252
Reviewed-on: https://go-review.googlesource.com/c/go/+/348740
Trust: Robert Griesemer <gri@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Add explicit conversions to avoid warnings from -Wsign-conversion and
-Wshorten-64-to-32. Also avoid runtime errors from -fsanitize=undefined.
Fixes#48121
Change-Id: I29dc8d976884fc42826392c10f1e1759bb1a3989
Reviewed-on: https://go-review.googlesource.com/c/go/+/348739
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For #43527.
Change-Id: I8c706e68572286d5675383eb2dfd75b5618b646b
Reviewed-on: https://go-review.googlesource.com/c/go/+/348730
Trust: Robert Griesemer <gri@golang.org>
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In CL 300996 that fixed issue #6189, we made Parse recognize
"," as a separator for fractional seconds.
However, we didn't modify Format to propagate the separator
verbatim from Parse. Without this change, we break prior
functionality that relied on a comma being used in Format.
Fixes#48037
Change-Id: I6565a25e8657ca3747a58b25acba58f27cdcddc0
Reviewed-on: https://go-review.googlesource.com/c/go/+/345438
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Reviewed-by: Emmanuel Odeke <emmanuel@orijtech.com>
Trust: Cherry Mui <cherryyz@google.com>
If closure in a global assignment and has a method receiver.
We should assign receiver as a global variable, not a local variable.
Fixes#48225
Change-Id: I8f65dd6e8baf66a5eff24028d28ad0a594091add
Reviewed-on: https://go-review.googlesource.com/c/go/+/348512
Run-TryBot: Dan Scales <danscales@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Dan Scales <danscales@google.com>
Reviewed-by: Keith Randall <khr@golang.org>
Trust: Dan Scales <danscales@google.com>
The internal linker is capable of linking the ppc64le linux
race detector and approved cgo packages.
Likewise, ppc64/linux and ppc64/aix do not support the race
detector. Thus, extra code to enforce external linking when
using the race detector on ppc64/ppc64le can be removed
entirely.
Fixes#21961
Change-Id: I10db14f65ee616ee3291e17409e8333e3af7d4df
Reviewed-on: https://go-review.googlesource.com/c/go/+/304459
Run-TryBot: Paul Murphy <murp@ibm.com>
TryBot-Result: Go Bot <gobot@golang.org>
Trust: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
gri@ reports that types2 now correctly handles when type parameters
recursively refer back to the parameterized type, so we might as well
add tests to exercise that. Unified IR also correctly handles
importing and exporting these types, but -G=3 currently does not.
Updates #46461.
Change-Id: I272102aa08c40c980b9aeeca9f834291dfbbcc3e
Reviewed-on: https://go-review.googlesource.com/c/go/+/348738
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
