This commit allows architectures to disable optimizations that need the
Avg* and Hmul* operations.
WebAssembly has no such operations, so using them as an optimization
but then having to emulate them with multiple instructions makes no
sense, especially since the WebAssembly compiler may do the same
optimizations internally.
Updates #18892
Change-Id: If57b59e3235482a9e0ec334a7312b3e3b5fc2b61
Reviewed-on: https://go-review.googlesource.com/103256
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
This is the first commit of a series that will add WebAssembly
as an architecture target. The design document can be found at
https://docs.google.com/document/d/131vjr4DH6JFnb-blm_uRdaC0_Nv3OUwjEY5qVCxCup4.
The GOARCH name "wasm" is the official abbreviation of WebAssembly.
The GOOS name "js" got chosen because initially the host environment
that executes WebAssembly bytecode will be web browsers and Node.js,
which both use JavaScript to embed WebAssembly. Other GOOS values
may be possible later, see:
https://github.com/WebAssembly/design/blob/master/NonWeb.md
Updates #18892
Change-Id: Ia25b4fa26bba8029c25923f48ad009fd3681933a
Reviewed-on: https://go-review.googlesource.com/102835
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Apply the same approach as in CL 102397.
Updates #24580
Change-Id: I65955f62a70807c87216519d03f3643a8f214dee
Reviewed-on: https://go-review.googlesource.com/103655
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
And delete them from asm_test.
Change-Id: Idfe1249052d82d15b9c30b292c78656a0bf7b48d
Reviewed-on: https://go-review.googlesource.com/103315
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This commit adds scripts for running the WebAssembly binaries that the
Go compiler will produce.
The script go_js_wasm_exec uses Node.js to run the binaries. Adding it
to PATH will enable "go run" and "go test" to work for js/wasm
without having to manually provide the -exec flag.
See https://golang.org/cmd/go/#hdr-Compile_and_run_Go_program
for more information.
The web page wasm_exec.html is an example on how to run the same
binaries in a web browser.
Both scripts use wasm_exec.js as a shared library.
Updates #18892
Change-Id: Ia4d9bea025957750baa0d0651243dc88f156f85d
Reviewed-on: https://go-review.googlesource.com/103255
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
The ModeType constant is a bit-wise OR of several other values.
It is reasonable for this to change without breaking compatibility.
This fixes the failures introduced by https://golang.org/cl/103597
Change-Id: I817e351cf3d1e0115dce665c8efbce21bc36426c
Reviewed-on: https://go-review.googlesource.com/103616
Run-TryBot: Joe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Map the error returned when a dial is aborted from the context package
error to the internal net package error. For example, context.Canceled
errors map to errCanceled, and context.DeadlineExceeded errors map to
poll.ErrTimeout.
Fixes#23648
Change-Id: Idf9d3d08052d540740c0b054503aaed931dc5b1e
Reviewed-on: https://go-review.googlesource.com/103518
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
There is currently no way for os.FileMode.IsRegular to report false
without being one of the following types:
ModeDir | ModeSymlink | ModeNamedPipe | ModeSocket | ModeDevice
This makes it difficult for custom implementations of os.FileInfo to return
a Mode that is explicitly not regular without resorting to setting one
of the types listed above. However, every one of the aforementioned types
are ill-suited as a general-purpose "not regular" file type.
Thus, add a ModeIrregular to serve exactly for that purpose.
The ModeIrregular type carries no information other than the fact that the
file is not regular.
Updates #22903Fixes#23878
Change-Id: I4f34d88f960bcb014816d8e7b5de8b1035077948
Reviewed-on: https://go-review.googlesource.com/94856
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Before this change, the smallest result Ldexp can handle was
ldexp(2, -1075), which is SmallestNonzeroFloat64.
There are some numbers below it should also be rounded to
SmallestNonzeroFloat64. The change fixes this.
Fixes#23407
Change-Id: I76f4cb005a6e9ccdd95b5e5c734079fd5d29e4aa
Reviewed-on: https://go-review.googlesource.com/87338
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
Incorporate https://code-review.googlesource.com/#/c/re2/+/3050/ from
the re2 repository. Description of that change:
Preserve the original behaviour of \s.
Prior to Perl 5.18, \s did not match vertical tab. Bake that into
make_perl_groups.pl as an override so that perl_groups.cc retains
its current definitions when rebuilt with newer versions of Perl.
This fixes make_perl_groups.pl to generate an unchanged perl_groups.go
with perl versions 5.18 and later.
Fixes#22057
Change-Id: I9a56e9660092ed6c1ff1045b4a3847de355441a7
Reviewed-on: https://go-review.googlesource.com/103517
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This change modifies the codegen test harness driver so that it no
longer modifies the environment GOOS/GOARCH, since that seems to cause
flakiness in other concurrently-running tests.
The change also enables the codegen tests in run.go.
Fixes#24538
Change-Id: I997ac1eb38eb92054efff67fe5c4d3cccc86412b
Reviewed-on: https://go-review.googlesource.com/103455
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
The existing behaviour of go generate is to pass GOPACKAGE=p
to all package files, including XTest files. This however is
incorrect as the package name for the XTest files is p_test.
Fixes#24594
Change-Id: I96b6e5777ec511cdcf1a6267a43f4d8c544c4af3
Reviewed-on: https://go-review.googlesource.com/103415
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Mostly same as golang.org/cl/102156, except the parts that
deal with different data types.
Change-Id: I061b858b73898725e3bf175ed022c2e3e55fc485
Reviewed-on: https://go-review.googlesource.com/103158
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Using go test -c makes you responsible for managing and merging the
coverage profile yourself.
Fixes#24588
Change-Id: I2037a91ceb904f9f35d76c7b5e5fae6bcbed4e46
Reviewed-on: https://go-review.googlesource.com/103395
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Decode AT_PAGESZ to determine physPageSize on dragonfly.
Change-Id: I7236d7cbe43433f16dffddad19c1655bc0c7f31d
Reviewed-on: https://go-review.googlesource.com/103257
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
The escape_because.go test file (which tests the "because" escape
explainations printed by `-m -m`) cointains a machine-generated list
of all the escape reasons seen in the escape tests.
The list appears to be outdated; moreove a new escape reason was added
in CL 102895. This change re-generates the list.
Change-Id: Idc721c6bbfe9516895b5cf1e6d09b77deda5a3dd
Reviewed-on: https://go-review.googlesource.com/103375
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Alberto Donizetti <alb.donizetti@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
-race sets a hard cap of 8,192, which is easily hit while testing.
Fixes#23611
Change-Id: I0f720ec39c82c2194a485d437d6373f4bdc8a9c1
Reviewed-on: https://go-review.googlesource.com/103160
Reviewed-by: Rob Pike <r@golang.org>
In general use of these magic methods must be documented so that
users understand what will happen.
Fixes#23289
Change-Id: Ic46915eee1d3b7e57d8d1886834ddfb2e8e66e62
Reviewed-on: https://go-review.googlesource.com/103238
Reviewed-by: Rob Pike <r@golang.org>
A very small number of old browsers consider content as HTML
even when it is explicitly stated in the Content-Type header
that it is not. If content served is based on user-supplied
input, then an XSS is possible. Introduce three mitigations:
+ Don't reflect user input in error strings
+ Set a Content-Disposition header when requesting a resource
that should never be displayed in a browser window
+ Set X-Content-Type-Options: nosniff on all responses
Change-Id: I81c9d6736e0439ebd1db99cd7fb701cc56d24805
Reviewed-on: https://go-review.googlesource.com/102318
Run-TryBot: Andrew Bonventre <andybons@golang.org>
Reviewed-by: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
When snapshotting the execution time stats of a goroutine
we take into account the intermediate values kepts in the GDesc's
gdesc field. At the end of goroutine analysis, we go through all
goroutines and replace the GExecutionStat with the new snapshot.
Here the mistake was that we replaced the GExecutionStat with
the value that reflects the intermediate values, but did clear
the intermediate values. So, when the following finalizeActiveSpans
runs, it trieds to add the intermediate values again (double-counting)
when taking a snapshot.
Fix the issue by using the finalized GExecutionStat instead of
recomputing the snapshot. While we are here, refactor the finalization
logic so it can be used when processing GoEnd, GoStop events.
Change-Id: Ibdb342214c29b65d4ea37e52b1f8b83f1fb20143
Reviewed-on: https://go-review.googlesource.com/103157
Reviewed-by: Peter Weinberger <pjw@google.com>
The additions were machine-generated.
The change for x * 7 avoids a reg-reg move,
reducing the number of instructions from 3 to 2.
Change-Id: Ib002e39f29ca5e46cfdb8daaf87ddc7ba50a17e5
Reviewed-on: https://go-review.googlesource.com/102395
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
If the character after $ cannot be detected as a valid
variable declaration, do not gobble the $.
Fixes#24345
Change-Id: Iec47be1f2e4f8147b8ceb64c30778eae8045b58f
Reviewed-on: https://go-review.googlesource.com/103055
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This change reduces the time to run this test on my machine from
real 0m2.491s
user 0m3.020s
sys 0m0.331s
to
real 0m0.237s
user 0m0.180s
sys 0m0.173s
This will make it reasonable to add more constants to the test.
I am also hopeful that it might help a bit with intermittent
cmd/compile/internal/gc test timeouts on the build dashboard
on the slower builders.
The time savings are entirely in compilation time,
by avoiding generating one giant func main.
Instead, generate tables of tests to be run,
which are translated into static data,
and then loop over those tests.
While we're here, do some minor cleanup:
* Remove the _ssa suffix on function names,
as that was only needed during ssa bootstrapping.
* Clean up error handling during test generation.
* Make functions single-line, to reduce future diff sizes.
Diffing giant files is slow.
Change-Id: Ic5fccdb71679169bea756c7d33c07d05e4801860
Reviewed-on: https://go-review.googlesource.com/102956
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
This change makes `-m -m` print a better explanation for the case
where a slice is marked as escaping and heap-allocated because it
has a non-constant len/cap.
Fixes#24578
Change-Id: I0ebafb77c758a99857d72b365817bdba7b446cc0
Reviewed-on: https://go-review.googlesource.com/102895
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Ilya Tocar <ilya.tocar@intel.com>
When parsing an ECDSA certificate, improve the error message upon
failing to parse the curve as a named curve, rather than returning
the original ASN1 error.
Fixes#21502
Change-Id: I7ae7b3ea7a9dcbd78a9607f46f5883d3193b8367
Reviewed-on: https://go-review.googlesource.com/57050
Reviewed-by: Filippo Valsorda <filippo@golang.org>
Don't compile the runtime packages with coverage when using the race
detector. The user can, perhaps accidentally, request coverage for the
runtime by using -coverpkg=all. If using the race detector, the
runtime package coverage will call into the race detector before it
has been initialized. This will cause the program to crash
mysteriously on startup.
Fixes#23882
Change-Id: I9a63867a9138797d8b8afb0856ae21079accdb27
Reviewed-on: https://go-review.googlesource.com/94898
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
parsePrivateKey can't return useful error messages because it does trial
decoding of multiple formats. Try ParseCertificate first in case it
offers a useful error message.
Fixes#23591
Change-Id: I380490a5850bee593a7d2f584a27b2a14153d768
Reviewed-on: https://go-review.googlesource.com/90435
Run-TryBot: Filippo Valsorda <filippo@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Adam Langley <agl@golang.org>
