This is the initial trivial implemenation. Further improvements can be
made for local calls.
A test is added, but the -fno-plt option is ignored by gcc if binutils
does not support inline plt relocations, so the test is effectively
skipped on such hosts.
Fixes#53345
Change-Id: Ibf31c26b1a8551c942b21019df8782c00b7a563e
Reviewed-on: https://go-review.googlesource.com/c/go/+/412714
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
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The optimizations were added in CL 425197 and CL 421877.
Move this functionality to a separate file to keep format.go smaller
and to document the justification for why this optimization exists.
Change-Id: I1e4e1ace19f9d596d8c0cf49ab6062f63a87b5bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/430675
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Use fcntl(oldfd, F_DUP2FD_CLOEXEC, newfd) to duplicate the file
descriptor and mark is as close-on-exec instead of dup2 & fcntl.
DragonFly BSD implements dup3 like this in libc since version 5.4.
Change-Id: I80c765faa288add8ffb236284c9e8c4f8e6c6769
Reviewed-on: https://go-review.googlesource.com/c/go/+/430535
Auto-Submit: Tobias Klauser <tobias.klauser@gmail.com>
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Increase unit test coverage of strconv/itoa.go from 83.8% to 85%
Change-Id: I0abdfc70a3f06251106f229c12ffb105eeb43fc8
GitHub-Last-Rev: da9755368b
GitHub-Pull-Request: golang/go#55014
Reviewed-on: https://go-review.googlesource.com/c/go/+/430137
Reviewed-by: Ian Lance Taylor <iant@google.com>
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Merge the CRC32 Update and Write functions using an unexported function, to avoid duplication of code and make it more readable.
The only difference between them is the check of the initialization of the IEEE table, and a boolean value specifies that.
Throughout the crc32.go file, in the switches the default value is inserted inside the switch statement, this change uniforms the style of the MakeTable function, making it like the other pieces of code.
Change-Id: I3889f6c6671210c82f0d7250cea67907bccf3ce7
GitHub-Last-Rev: b8777ee213
GitHub-Pull-Request: golang/go#55044
Reviewed-on: https://go-review.googlesource.com/c/go/+/430456
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Use fcntl(oldfd, F_DUP2FD_CLOEXEC, newfd) to duplicate the file
descriptor and mark is as close-on-exec instead of dup2 & fcntl.
Note that the value for F_DUP2FD_CLOEXEC is different on Solaris and
Illumos and thus the definition is moved from zerrors_solaris_amd64.go
to solaris/illumos specific files.
Change-Id: I9a52801d1a01471ec3f065520575e3fafee92855
Reviewed-on: https://go-review.googlesource.com/c/go/+/428375
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The text was mistakenly quoted with backquotes.
Change-Id: I77ed4adac8c78b719bea61c08f1c377ed4ac4c9d
GitHub-Last-Rev: 6f1430fe16
GitHub-Pull-Request: golang/go#55059
Reviewed-on: https://go-review.googlesource.com/c/go/+/430775
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Go 1.19 introduce new append-like APIs in package encoding/binary, this
change teaches the inliner to treat calls to these methods as cheap, so
that code using them will be more inlineable.
Updates #42958
Change-Id: Ie3dd4906e285430f435bdedbf8a11fdffce9302d
Reviewed-on: https://go-review.googlesource.com/c/go/+/431015
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These instructions already do sign extension on output, so we can get rid of it.
Note: (MOVWreg (MULW x y)) may araise from divisions by constant,
generic rules replace them with multiply and may produce (Rsh32x64 (Mul32 _ _) _).
Change-Id: I41bc9b519e38bc6027311de604dadb962cd0bbf4
Reviewed-on: https://go-review.googlesource.com/c/go/+/429757
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Calling close is no longer necessary.
It was was originally necessary to cleanup goroutines
spawned to decompress the stream.
This has not been the case since CL 4548079.
Update the documentation to mention how it handles trailing data
after the end of the DEFLATE stream.
Change-Id: Ieacba264230560713b7b8d604665223fd096f4ec
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We added -pagezero_size in CL 72730, where it was intented for iOS.
The current code passes it only on macOS/AMD64 instead. It is not
really necessary there. Also, the new darwin linker starts to emit
a warning about deprecation of the flag. Stop passing it.
For #54482.
Change-Id: If9db7a1645c37d4284e48f075856912df8d8c1a0
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Allow us to select a race .syso file based on subarch values.
Note that this doesn't actually change the syso used. This CL
just moves things around in preparation for adding v3-specific
versions in future CLs.
Change-Id: I14e3c273a7c6f07b13b22193b7a851ea94c765cb
Reviewed-on: https://go-review.googlesource.com/c/go/+/424034
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CL 413374 added syscall.Mmap on solaris. Use it in cmd/compile and
cmd/link if the bootstrap toolchain is Go ≥ 1.20.
For #52875
For #54265
Change-Id: I9a0534bf97926eecf0c6f1f9218e855344ba158f
Reviewed-on: https://go-review.googlesource.com/c/go/+/430496
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Support for 1xx responses has recently been merged in
net/http (CL 269997).
As discussed in this CL
(https://go-review.googlesource.com/c/go/+/269997/comments/1ff70bef_c25a829a),
support for forwarding 1xx responses in ReverseProxy has been extracted
in this separate patch.
According to RFC 7231, "a proxy MUST forward 1xx responses unless the
proxy itself requested the generation of the 1xx response".
Consequently, all received 1xx responses are automatically forwarded as long as the
underlying transport supports ClientTrace.Got1xxResponse.
Fixes#26088Fixes#51914
Change-Id: I3a35ea023b798bfe56b7fb8696d5a49695229cfd
GitHub-Last-Rev: dab8a461fb
GitHub-Pull-Request: golang/go#53164
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Noticed in a manual audit from a customer codebase that the pattern
w.WriteString(fmt.Sprint*(args...))
was less efficient and in most cases we can just invoke:
fmt.Fprint*(w, args...)
and from the simple benchmarks we can see quick wins in all dimensions:
$ benchstat before.txt after.txt
name old time/op new time/op delta
DetailString-8 5.48µs ±23% 4.40µs ±11% -19.79% (p=0.000 n=20+17)
name old alloc/op new alloc/op delta
DetailString-8 2.63kB ± 0% 2.11kB ± 0% -19.76% (p=0.000 n=20+20)
name old allocs/op new allocs/op delta
DetailString-8 63.0 ± 0% 50.0 ± 0% -20.63% (p=0.000 n=20+20)
Change-Id: I47a2827cd34d6b92644900b1bd5f4c0a3287bdb1
Reviewed-on: https://go-review.googlesource.com/c/go/+/429861
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Remove an unnecessary 'an' from errorcodes.go.
Change-Id: Iabe8ce479077cbfff936d57c788a9b39d7e5b34e
Reviewed-on: https://go-review.googlesource.com/c/go/+/430495
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The existing implementation allocates a new string even when the
count is 1, where we know the output is the same as the input.
While we wouldn't expect a count of 1 for hardcoded values of the
parameter, it is expected when the parameter is computed based on
a different value (e.g., the length of a input slice).
name old time/op new time/op delta
Repeat/5x0-10 2.03ns ± 0% 2.02ns ± 0% ~ (p=1.000 n=1+1)
Repeat/5x1-10 13.7ns ± 0% 2.0ns ± 0% ~ (p=1.000 n=1+1)
Repeat/5x2-10 18.2ns ± 0% 18.1ns ± 0% ~ (p=1.000 n=1+1)
Repeat/5x6-10 27.0ns ± 0% 27.0ns ± 0% ~ (p=1.000 n=1+1)
Repeat/10x0-10 2.02ns ± 0% 2.02ns ± 0% ~ (p=1.000 n=1+1)
Repeat/10x1-10 16.1ns ± 0% 2.0ns ± 0% ~ (p=1.000 n=1+1)
Repeat/10x2-10 20.8ns ± 0% 20.9ns ± 0% ~ (p=1.000 n=1+1)
Repeat/10x6-10 29.2ns ± 0% 29.4ns ± 0% ~ (p=1.000 n=1+1)
Change-Id: I48e08e08f8f6d6914d62b3d6a61d563d637bec59
GitHub-Last-Rev: 068f58e08b
GitHub-Pull-Request: golang/go#53321
Reviewed-on: https://go-review.googlesource.com/c/go/+/411477
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These variables never change, we don't need second copies of them.
Also rename bPlusBuild to plusBuild, since it is the only remaining
variable with a "b" prefix.
Change-Id: I97089b001d23e9b0f2096e19d9ceed7a9bbb377d
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The issue referenced in work_prune.txt was fixed in CL 362754, but we
forgot to update the TODO or mark the issue as fixed in the commit
message.
Updates #48331.
Change-Id: Id2115e496aeaef275dd3c8d32c5c5564e6addb07
Reviewed-on: https://go-review.googlesource.com/c/go/+/425485
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Fixes#52812
Change-Id: Idb70d0540bbf9ecdc64293c62a23f07ee3be883c
Reviewed-on: https://go-review.googlesource.com/c/go/+/405615
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The rule uses R25 as a scratch register. If the input is R25 it
will be clobbered on the way, causing wrong result.
Change-Id: I464eadbdef0f3a5e90f9ef8c818393baa4335b87
Reviewed-on: https://go-review.googlesource.com/c/go/+/430015
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The changes improve the documentation for DefaultTransport, making
the style with how the HTTP proxy environment variables are being
referred to, consistent with the rest of the project's
documentation.
Also mention HTTPS_PROXY environment variables, as suggested in #32649.
Change-Id: I4e6b49881d7b30b5a0d4699531fa7c2929fc49f7
GitHub-Last-Rev: 2fc751937b
GitHub-Pull-Request: golang/go#54996
Reviewed-on: https://go-review.googlesource.com/c/go/+/430135
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all_test.go is quite big, so let it contain tests only.
Change-Id: I5003db4a8b1e2384ea8470f5e89e1c26d61d10ae
Reviewed-on: https://go-review.googlesource.com/c/go/+/429759
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objabi.HeadType is typically used as a non-pointer type, however the String function
is declared on a pointer receiver. This means that in most cases its integer value
is printed, rather than the value from the String function.
Change-Id: I3d28d9680e88a714bc1152ed5e1df4ac43d7a33f
Reviewed-on: https://go-review.googlesource.com/c/go/+/430556
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Before committing, the test coverage of strings/builder.go is 97.4%
After committing, the test coverage of strings/builder.go is 100%
Change-Id: I22643b1c4632b5ca7ef98362f32bb85faae80bad
GitHub-Last-Rev: 2a55ca3e33
GitHub-Pull-Request: golang/go#55004
Reviewed-on: https://go-review.googlesource.com/c/go/+/430156
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If the entry symbol cannot be found (for example, a new port is being brought
up and no rt0 code has been provided), the linker will currently panic. Rather
than panicing, generate an error that aids in debugging:
missing entry symbol "_rt0_arm64_openbsd"
Change-Id: I9cc38eaab48f730d596ca7fa9e9e3d68250ae4d3
Reviewed-on: https://go-review.googlesource.com/c/go/+/430555
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RFC 3339 is the most common time representation,
being used in an overwhelming 57.3% of all specified formats,
while the next competitor only holds 7.5% usage.
Specially optimize parsing to handle the RFC 3339 format.
To reduce the complexity of error checking,
parseRFC3339 simply returns a bool indicating parsing success.
It leaves error handling to the general parse path.
To assist in fuzzing, the internal parse function was left unmodified
so that we could test that parseRFC3339 and parse agree with each other.
Performance:
name old time/op new time/op delta
ParseRFC3339UTC 112ns ± 1% 37ns ± 1% -67.37% (p=0.000 n=9+9)
ParseRFC3339TZ 259ns ± 2% 67ns ± 1% -73.92% (p=0.000 n=10+9)
Credit goes to Amarjeet Anand for a prior CL attemping to optimize this.
See CL 425014.
Fixes#54093
Change-Id: I14f4e8c52b092d44ceef6863f261842ed7e83f4c
Reviewed-on: https://go-review.googlesource.com/c/go/+/425197
Reviewed-by: Rob Pike <r@golang.org>
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Direct syscalls should no longer be used on darwin. Instead, directly
call libc's msync when using Go ≥ 1.20 for bootstrap.
For #54265
Change-Id: Ie3f1e6ccd1a06e7f0ddd88cdef5067393a69e8db
Reviewed-on: https://go-review.googlesource.com/c/go/+/430336
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Go 1.17 is the minimum required version for bootstrap as of Go 1.20.
Also, the package no longer builds with Go 1.12 used for bootstrap.
Thus, drop the Go 1.12 compatibility and used linkname unconditionally.
For #44505
Change-Id: Ic160aba4a33d580987b4633a3db03a025804d090
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Add a new flag 'paramNames' to typeWriter struct to control whether
function parameter names are written or not (set by default). Unset
it when we want the function signature w/o parameter names, e.g. when
showing two signatures that are not identical. This makes is much
easier to see the typw differences in the error message.
To avoid needing to provide yet another (rarely used) boolean parameter
to typeString, remove that function in favor of setting the paramNames
flag explicitly. Adjust the code in errors.go that used typeString; the
resulting code is also more efficient (fewer bytes.Buffer allocations).
While at it, rename the typeWriter 'debug' field to 'tpSubscripts'
because that is what it controls.
Add test case and adjusted existing expected output for existing tests.
Fixes#54942.
Change-Id: I625eae30c403c39ce89951b8ea6214d783c92c75
Reviewed-on: https://go-review.googlesource.com/c/go/+/430416
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Reviewed-by: Robert Griesemer <gri@google.com>
This CL adds a suitable error code to every error reporting,
matching what go/types already does.
For now, the error codes are not progagated through the API,
but eventually they will be available to clients.
Also, for now the errorcodes.go file is a 1:1 copy (with
adjusted package name) of go/types/errorcodes.go.
A subsequent CL will factor out this file.
In contrast to go/types, for errors due to incorrect Go version,
the error code is always _UnsupportedFeature. In go/types, the
error sometimes is related to the specific operation.
Change-Id: I18771bc3d00bbdbf6d705bf25f2aea3c3d977b1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/429355
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Robert Griesemer <gri@google.com>
Reviewed-by: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Griesemer <gri@google.com>
CL 428780 used unsafe.Slice instead of unsafeheader for simplifiying the
code. However, it can be even simpler, since "p" is already a *uin16,
the unsafe cast is not necessary.
Change-Id: Idc492b73518637997e85c0b33f8591bd19b7929f
Reviewed-on: https://go-review.googlesource.com/c/go/+/429915
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
The "&x.v" cost us 2 inline cost budget, causing extra inline cost for
the caller. By taking the fact that "v" is laid out in memory as the
first field of all atomic types, we can accessing it without addressing.
Discovering why attempting to convert sync.RWMutex.readerCount to atomic
type. RWMutex.RUnlock have the inline cost 75, with extra 7 inline cost
from Int32.Add causing it not inlinable anymore.
With this change, Int32.Add only has 5 inline cost budget, RWMutex can
use it while still be inlinable.
Change-Id: Iabe1d1bf53389b0b8b5f56b4611231b732fd9df5
Reviewed-on: https://go-review.googlesource.com/c/go/+/429766
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Change-Id: I9c4c3ada3a8f5d8d198cc42a4afc06972ee00c61
GitHub-Last-Rev: 4ed80119e3
GitHub-Pull-Request: golang/go#54916
Reviewed-on: https://go-review.googlesource.com/c/go/+/428921
Run-TryBot: Ian Lance Taylor <iant@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
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