After CL 104636 cpu.X86.HasAVX is set early enough that it can be used
in runtime·memclrNoHeapPointers. Add an offset to use in assembly and
replace the only occurence of support_avx2.
Change-Id: Icada62efeb3e24d71251d55623a8a8602364c9a8
Reviewed-on: https://go-review.googlesource.com/106595
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Ilya Tocar <ilya.tocar@intel.com>
This CL makes the codegen testsuite automatically test all
architecture variants for architecture specified in tests. For
instance, if a test file specifies a "arm" test, it will be
automatically run on all GOARM variants (5,6,7), to increase
the coverage.
The CL also introduces a syntax to specify only a specific
variant (eg: "arm/7") in case the test makes sense only there.
The same syntax also allows to specify the operating system
in case it matters (eg: "plan9/386/sse2").
Fixes#24658
Change-Id: I2eba8b918f51bb6a77a8431a309f8b71af07ea22
Reviewed-on: https://go-review.googlesource.com/107315
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
And remove it from asmtest. Next CL will remove the whole
asmtest infrastructure.
Change-Id: I5851bf7c617456d62a3c6cffacf70252df7b056b
Reviewed-on: https://go-review.googlesource.com/107335
Run-TryBot: Giovanni Bajo <rasky@develer.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
CL 106463 introduced what seems to trim the "go:" prefix in pramas
comments twice, so "//go:go:foo" would be handled, too.
So either the strings.TrimPrefix or the [3:]-slicing is not needed.
I opted to remove the [3:]-slicing.
Change-Id: I1325bbc08a9be9ae100c5a7775b0a23f9ed0a419
Reviewed-on: https://go-review.googlesource.com/107256
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
It was skipping dirs starting with ".", but it was missing the "_"
prefix and the "testdata" name. From "go help packages":
Directory and file names that begin with "." or "_" are ignored
by the go tool, as are directories named "testdata".
Before the change:
$ go doc z # using src/cmd/go/testdata/testvendor/src/q/z
package z // import "."
After the fix, it falls back to the current directory, as expected when
a single argument isn't found as a package in $GOPATH.
TestMain needs a small adjustment to keep the tests working, as now
their use of cmd/doc/testdata would normally not work.
Fixes#24462.
Change-Id: I1f5d6d1eba0fb59aff55db33b3b1147e300284ef
Reviewed-on: https://go-review.googlesource.com/106935
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rob Pike <r@golang.org>
There are two flakes present on the dashboard for this test.
Change-Id: I4abec972586314fbafe7db5760b91afd7ae47fd3
Reviewed-on: https://go-review.googlesource.com/106980
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
RawRead assumes the callback will perform either (a) a blocking read
and always return true, (b) a blocking read with a SO_RCVTIMEO set
returning false on WSAETIMEDOUT, or (c) a non-blocking read
returning false on WSAEWOULDBLOCK. In the latter two cases, it uses
a 0-byte overlapped read for notifications from the IOCP runtime
when the socket becomes readable before trying again.
RawWrite assumes the callback will perform blocking write and will
always return true, and makes no effort to tie into the runtime loop.
Change-Id: Ib10074e9d502c040294f41a260e561e84208652f
Reviewed-on: https://go-review.googlesource.com/76391
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Windows process cannot run properly, if it only has
GOOS and GOARCH environment variables set. It needs
other environment variables. So adjust TestLarge and
TestNoRet to add GOOS and GOARCH to the existing
variables set instead of clearing environment.
Fixes#24855
Change-Id: I9fd9430d89031c3bacdbc6283450efaa4819e616
Reviewed-on: https://go-review.googlesource.com/107035
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
CL 92475 added WSAEMSGSIZE const to syscall package. But there
is already copy of WSAEMSGSIZE in internal/syscall/windows.
So delete syscall.WSAEMSGSIZE
Change-Id: I0b81fa5dcf846887a0cb27d8bbd7e250860627b5
Reviewed-on: https://go-review.googlesource.com/106956
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Since the tabwriter is flushed at every symbol,
it can be re-used with no impact on the output.
This cuts allocated space when objdump-ing
the compiler by almost 40%,
and enables further upcoming improvements.
It also speeds up objdump.
name old time/op new time/op delta
ObjdumpCompile 9.22s ± 3% 8.77s ± 3% -4.79% (p=0.000 n=10+9)
Change-Id: Ief114d6c2680a4e762b5f439d3ca8dc7a89b9b27
Reviewed-on: https://go-review.googlesource.com/106978
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
We sometimes generate code like this:
v473 = MOVQconst <uintptr> // constant..
v580 = MOVBstoreidx1 <mem> v1056 v473 v819 v491 // ..only used as an index
Rewrite indexed stores to non-indexed version, where possible.
This allows to eliminate const->register move, reducing codesize and lowering register pressure.
Change-Id: Id5fed801dffe3f1a80876b8d8bd43775a7c942b2
Reviewed-on: https://go-review.googlesource.com/105295
Run-TryBot: Ilya Tocar <ilya.tocar@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Currently, collecting a stack trace via runtime.Stack captures the stack for the
immediately running goroutines. This change extends those tracebacks to include
the tracebacks of their ancestors. This is done with a low memory cost and only
utilized when debug option tracebackancestors is set to a value greater than 0.
Resolves#22289
Change-Id: I7edacc62b2ee3bd278600c4a21052c351f313f3a
Reviewed-on: https://go-review.googlesource.com/70993
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
This commit adds the wasm architecture to the mime package.
Updates #18892
Change-Id: I0481057bd52e39d84b3d6f5140335e293eff38f3
Reviewed-on: https://go-review.googlesource.com/106998
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This cuts the allocated space while executing
go tool objdump -S `go tool -n compile`
by over 10%.
It also speeds it up slightly:
name old time/op new time/op delta
ObjdumpSCompiler 9.03s ± 1% 8.88s ± 1% -1.59% (p=0.000 n=20+20)
Updates #24725
Change-Id: Ic6ef8e273ede589334ab6e07099ac2e5bdf990c9
Reviewed-on: https://go-review.googlesource.com/106798
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
golang.org/cl/102697 attempted to fix the span presentation by utilizing
the position of the span in the span slices of a task. But it is
not complete either.
First, id=0 is omitted in json encoding and the trace viewer silently
drops entries with the missing id field, so we must avoid zero-value id.
Second, it is possible that a goroutine handles multiple tasks. Then,
id collisions will happen.
This takes a simpler approach - have a counter that increments for every
emitSpan call, and use the value as the id value.
Change-Id: Idaa9505634acf6d327c6f00af32d8260955b85e1
Reviewed-on: https://go-review.googlesource.com/106755
Reviewed-by: Heschi Kreinick <heschi@google.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The current assembler will report error when the negative offset is in
the range of [-256, 0) and is not the multiples of 4/8.
The fix introduces C_NSAUTO_8, C_NSAUTO_4 and C_NAUTO4K. C_NPAUTO
includes C_NSAUTO_8 instead of C_NSAUTO, C_NAUTO4K includes C_NSAUTO_8,
C_NSAUTO_4 and C_NSAUTO. So that assembler will encode the negative offset
that is greater than -4095 and is not the multiples of 4/8 as two instructions.
Add the test cases.
Fixed#24471
Change-Id: I42f34e3b8a9fc52c9e8b41504294271aafade639
Reviewed-on: https://go-review.googlesource.com/102635
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
The escape analysis models "loop depth". If the address of an
expression is assigned to something defined at a lower (outer)
loop depth, the escape analysis decides it escapes. However, it
uses the loop depth of the address operator instead of where
the RHS is defined. This causes an unnecessary escape if there is
an assignment inside a loop but the RHS is defined outside the
loop. This CL propagates the loop depth.
Fixes#24730.
Change-Id: I5ff1530688bdfd90561a7b39c8be9bfc009a9dae
Reviewed-on: https://go-review.googlesource.com/105257
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This is more or less implied by the spec language on initialization,
but restate it for clarity.
Fixes#23112
Change-Id: Ibe5385acafe4eac38823de98a025cd37f7a77d3b
Reviewed-on: https://go-review.googlesource.com/103399
Reviewed-by: Austin Clements <austin@google.com>
If there are no certs, return an empty pool, not nil.
Fixes#21405
Change-Id: Ib4ac9d5c4a8cef83dd53565b0707a63b73ba0a8b
Reviewed-on: https://go-review.googlesource.com/103596
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
As an example of why this might happen,
consider this code from cmd/internal/objfile:
// Expand literal "$GOROOT" rewritten by obj.AbsFile()
filename = filepath.Clean(os.ExpandEnv(filename))
In this case, filename might not contain "$GOROOT",
in which case we can skip the buffer entirely.
name old time/op new time/op delta
Expand/noop-8 46.7ns ± 1% 12.9ns ± 1% -72.47% (p=0.000 n=9+9)
Expand/multiple-8 139ns ± 1% 137ns ± 1% -1.36% (p=0.001 n=10+10)
The Expand/multiple improvement is probably noise.
This speeds up cmd/objdump detectably, if not much.
Using "benchcmd ObjdumpCompile go tool objdump `go tool -n compile`":
name old time/op new time/op delta
ObjdumpCompile 9.35s ± 2% 9.07s ± 3% -3.00% (p=0.000 n=18+18)
Updates #24725
Change-Id: Id31ec6a9b8dfb3c0f1db58fe1f958e11c39e656c
Reviewed-on: https://go-review.googlesource.com/106697
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Fixes#24580
Change-Id: I7536aca1e90717283bd6a3bb4b1bab059b0cf720
Reviewed-on: https://go-review.googlesource.com/104677
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Users of TempFile need to be able to supply the suffix, especially
when using operating systems that give semantic meaning to the
filename extension such as Windows. Renaming the file to include
an extension after the fact is insufficient as it could lead to
race conditions.
If the string given to TempFile includes a "*", the random string
replaces the "*". For example "myname.*.bat" will result in a random
filename such as "myname.123456.bat". If no "*' is included the
old behavior is retained, and the random digits are appended to the
end.
If multiple "*" are included, the final one is replaced, thus
permitting a pathological programmer to create filenames such as
"foo*.123456.bat" but not "foo.123456.*.bat"
Fixes#4896
Change-Id: Iae7f0980b4de6d7d31b87c8c3c3d40767b283c1f
Reviewed-on: https://go-review.googlesource.com/105675
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
"MOVD $0xaaaaaaaa, R2"
"MOVD $-0x55555555, R3"
For the above instructions, 64-bit constants 0x00000000 aaaaaaaa
and 0xffffffff aaaaaaab are stored in the constant pool.
This CL optimizes them to
"MOVWU $0xaaaaaaaa, R2"
"MOVW $-0x05555555, R3"
and 32-bit constants 0xaaaaaaaa and 0xaaaaaaab are stored in the
constant pool.
There is a little size reduction (about total 5KB) in both the go
executable and the library files.
Change-Id: I7c4bfa6cd9c07da99c69a8f9c15010a0cce3b735
Reviewed-on: https://go-review.googlesource.com/105775
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
First, take the exclusive lock that ensures only one running binary
later: after assembling the gotest.app directory and signing it.
Second, don't pass -r to ios-deploy. The -r flag uninstalls the
app before installing it. It seems unnecessary, takes extra time
and if there was only the one developer app on the phone, it
will drop the developer permission on uninstall.
Change-Id: Ia222d3e5c2e1e2285f53074eb952941fd45fadd9
Reviewed-on: https://go-review.googlesource.com/106676
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
This commit includes efficiency improvements in two places in the
database/sql package where an "if err != nil" was redundant and
the error can be returned as-is (most of the code in the standard
library and even in the file I changed does it my suggested way).
Change-Id: Ib9dac69ed01ee846e570a776164cb87c2caee6ca
Reviewed-on: https://go-review.googlesource.com/106555
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Move the test skip to use testenv.SkipFlaky and link to the Go issue.
Update #24826
Change-Id: I7a0ea3325ffcaa790b25f8cdc429fb52e96a41c7
Reviewed-on: https://go-review.googlesource.com/106636
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
As the comment above the code I'm changing says, when building with
-buildmode=exe, the default compiler flags produce code incompatible with PIE.
But when -linkshared is passed, the default compiler flags are not used so this
does not apply. And now I've found a system (linux/arm64 with glibc 2.27) where
this combination of flags causes a problem, albeit for reasons I don't really
understand, so stop passing -no-pie when -linkshared is passed.
Change-Id: I412ec7941dc0cb89e6d1b171fc29288aadcb9f20
Reviewed-on: https://go-review.googlesource.com/104815
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
I was wrong. There was a need to loop here.
Fixes#24761
Change-Id: If13b3ab72febde930bdaebdddd1c05e0d0446020
Reviewed-on: https://go-review.googlesource.com/105615
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
The standard library has plenty of polished encoder/decoder
implementations. No need for another ad-hoc one.
I considered using encoding/gob instead, but these strings go into the
package data part of the object file, so it's important they don't
contain "\n$$\n". Package json escapes newlines in strings, so it's
safe to use here.
Change-Id: I998655524ccee7365c2c8e9a843e6975e95a3e62
Reviewed-on: https://go-review.googlesource.com/106463
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
And fix the nacl implementation.
Fixes#24710
Change-Id: I31ffeea03a72dac5021ffb183fde31e9ffd060ad
Reviewed-on: https://go-review.googlesource.com/106464
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
CL 106096 changed the iOS exec wrapper to directly run the binary
without waiting for a SIGINT signal, but did so in a way that
expects a "(lldb)" response from lldb in 2 seconds. Lldb might
not out output anything until the program finishes, so change the
exec wrapper to just fire and forget the the run command and go
straight to waiting for exit, successfully or otherwise.
Change-Id: I6a2dc63f9b29fe44edb3591afb048b9a8e2e0822
Reviewed-on: https://go-review.googlesource.com/106176
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
A raw string containing newlines breaks whatever columns structure
has been established so far. Recognize the situation and force a
new section of alignment with the first line break seen after the
the raw string.
Applied gofmt to src and misc.
Fixes#9064.
Change-Id: I961e94b529b1fd421908311f366b113e2ec9b7f0
Reviewed-on: https://go-review.googlesource.com/105040
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
The file ordering.go referred to in the comment was removed
with commit dd44895. There's no duplicate use of the deps
field anymore.
Change-Id: Ia6490e9f0839d4f755e8063758819e29b3d3b248
Reviewed-on: https://go-review.googlesource.com/106459
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
