Don't do direct loads from argument slots if the sizes don't match.
This prevents us from loading from a float32 using a uint64 load
during expressions like uint64(math.float32Bits(f)) where f is a float32 arg.
Fixes#25322
Change-Id: I3887d76f78c844ba546243e7721d811c3d4a9700
Reviewed-on: https://go-review.googlesource.com/112637
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
- Documented the duration parameter in Profile() to match with Trace().
- Properly handling the error from strconv.ParseInt to match with Trace().
- Updated the profiles tables to include additional handlers exposed from
net/http/pprof. Added a separate section at the bottom to explain what
the profiles are and how to use them.
Fixes#24380
Change-Id: I8b7e100d6826a4feec81f29f918e7a7f7ccc71a0
Reviewed-on: https://go-review.googlesource.com/112495
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Initialization of t.UInt is missing from SetTypPtrs in config.go,
preventing rules that use it from matching when they should.
This adds the initialization to allow those rules to work.
Updated test/codegen/rotate.go to test for this case, which
appears in math/bits RotateLeft32 and RotateLeft64. There had been
a testcase for this in go 1.10 but that went away when asm_test.go
was removed.
Change-Id: I82fc825ad8364df6fc36a69a1e448214d2e24ed5
Reviewed-on: https://go-review.googlesource.com/112518
Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Add more information to misc/android/README for developing
arm and arm64 with an Android environment.
Change-Id: I0c88996b6ab0c41946a2c7e69e9c92ec7bb3be27
Reviewed-on: https://go-review.googlesource.com/112276
Reviewed-by: Elias Naur <elias.naur@gmail.com>
Offsets for Load and Store instructions have type i32. Bad index
expression offsets can cause an offset to be larger than MaxUint32,
which is not allowed. One example for this is the test test/index0.go.
Generate valid code by adding a guard to the responsible rewrite rule.
Also emit a proper error when using such a bad index in assembly code.
Change-Id: Ie90adcbf3ae3861c26680eb81790f28692913ccf
Reviewed-on: https://go-review.googlesource.com/111955
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This changes makes encoder.Close aware of how many bytes to write if there
is any data left in the buffer.
Fixes#25295
Change-Id: I4138891359935509cb561c453b8059ba2b9e576b
GitHub-Last-Rev: f374096d2f
GitHub-Pull-Request: golang/go#25316
Reviewed-on: https://go-review.googlesource.com/112515
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This changes decoder.Read to always return io.ErrUnexpectedEOF if the input
contains surplus padding or unexpected content. Previously the error could
be io.EOF or io.ErrUnexpectedEOF depending on how the input was chunked.
Fixes#25296
Change-Id: I07c36c35e6c83e795c3991bfe45647a35aa58aa4
GitHub-Last-Rev: 818dfda90b
GitHub-Pull-Request: golang/go#25319
Reviewed-on: https://go-review.googlesource.com/112516
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Non-main packages do not depend on the "runtime" package,
but main packages still do. Use a main package in the test.
This change passes the -i flag to the install command
to allow installation of updated dependencies,
and removes "install std" as unnecessary.
https://golang.org/cl/107957 is relevant to fixed test.
Updates #24436
Change-Id: If1845f37581a16ad77e72e50be21010e198bc7c5
Reviewed-on: https://go-review.googlesource.com/103675
Reviewed-by: Bryan C. Mills <bcmills@google.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Section 2.2 of the referenced spec http://www.xml.com/axml/testaxml.htm
defines 0xD7FF as a (sub)range boundary, not 0xDF77.
Fixes#25172
Change-Id: Ic5a3328cd46ef6474b8e93c4a343dcfba0e6511f
Reviewed-on: https://go-review.googlesource.com/109495
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Change-Id: If431dfa59496b86f58f2ba2a83ca544a28a2a972
Reviewed-on: https://go-review.googlesource.com/112435
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
When using gccgo the standard library sources are not available in
GOROOT. Don't expect them to be there. In the gccgo build, use a set
of standard library packages generated at build time.
Change-Id: Id133022604d9b7e778e73e8512f9080c61462fba
Reviewed-on: https://go-review.googlesource.com/111595
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
When we look for the tool ID to use for a compiler, force untranslated
output so that we can match the literal string "version".
Fixes https://gcc.gnu.org/PR84765
Change-Id: I607df445dbd3c5a7c3a6907601adcb039ac16fc1
Reviewed-on: https://go-review.googlesource.com/111575
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
A number of cmd/go tests can never work with gccgo, for various
different reasons. Skip those tests when using gccgo. Adjust some
other tests to pass when using gccgo. Adjust one test to not skip when
using gccgo, since it does work.
Change-Id: I33b09558581a1e304416cf1c05a96f9526abba0e
Reviewed-on: https://go-review.googlesource.com/110915
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
This change was made to the gccgo sources as part of CL 47037.
It is required to make the testcarchive and testcshared tests work.
Otherwise using `go build -mode=c-archive -o libgo.a` will cause the
header file to be named go.h rather than libgo.h.
Change-Id: I2db1d7b0f575368b31273cc01097447a0471efd6
Reviewed-on: https://go-review.googlesource.com/111615
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Than McIntosh <thanm@google.com>
Move ops can be faster than memmove calls because the number of bytes
to be moved is fixed and they don't incur the overhead of a call.
This change allows memmove to be converted into a Move op when the
arguments are disjoint.
The optimization is only enabled on s390x at the moment, however
other architectures may also benefit from it in the future. The
memmove inlining rule triggers an extra 12 times when compiling the
standard library. It will most likely make more of a difference as the
disjoint function is improved over time (to recognize fresh heap
allocations for example).
Change-Id: I9af570dcfff28257b8e59e0ff584a46d8e248310
Reviewed-on: https://go-review.googlesource.com/110064
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ilya Tocar <ilya.tocar@intel.com>
The idevicedebugserverproxy command takes a port number without a
flag, like so:
idevicedebugserverproxy 3222
If the -u <device_id> flag is added afterwards, it is ignored and
the command use an arbitrary device. Instead, always inject the -u
flag before any other idevice command arguments.
While here, also kill any leftover idevicedebugserverproxy instance
previous (failed) runs might have left running.
Change-Id: I0bf06ed1a20ef225abeca183f9ba8f396662d435
Reviewed-on: https://go-review.googlesource.com/112216
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
That was the intention with the existing code, but it was buggy; builtin
functions aren't treated as values by types.TypeAndVal. Thus, we should
use the IsBuiltin method instead of IsValue.
Teaching vet what builtin funcs are pure is already being tracked as a
separate issue, #22851.
While at it, also add a test with methods, just to be sure that the
current logic doesn't break with that edge case either.
Fixes#25303.
Change-Id: Ic18402b22cceeabf76641c02f575b194b9a536cc
Reviewed-on: https://go-review.googlesource.com/112177
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
Run-TryBot: Robert Griesemer <gri@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
text/template recently added support for passing untyped nil as function
call arguments, as those would be mixed up with "missing argument"
values before. See CL 95215.
html/template now needs a small change to adapt to that new possibility.
In particular, when printing values as JS bytes, its code was written
under the assumption that the values would never be untyped nil - that
is, the reflect.Value would always be valid.
Short-circuit indirectToJSONMarshaler on an untyped nil, to avoid the
panic and fall back to the existing " null " output. Before this change
and on 1.10, printing a typed nil and an untyped nil resulted in:
null ""
After this change, one will get:
null null
Fixes#24717.
Change-Id: I03cd10ef64b96e837bacc9ccf4cf25624d80de1c
Reviewed-on: https://go-review.googlesource.com/109215
Run-TryBot: Daniel Martí <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rhys Hiltner <rhys@justin.tv>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This test runs independent goroutines modifying a comprehensive variety
of local vars to look for garbage collector regressions. This test has
been verified to trigger issue 22781 on the go1.9.2 tag. This test
expands on test/fixedbugs/issue22781.go.
Tests #22781
Change-Id: Id32f8dde7ef650aea1b1b4cf518e6d045537bfdc
Reviewed-on: https://go-review.googlesource.com/93715
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
replace map clears of the form:
for k := range m {
delete(m, k)
}
(where m is map with key type that is reflexive for ==)
with a new runtime function that clears the maps backing
array with a memclr and reinitializes the hmap struct.
Map key types that for example contain floats are not
replaced by this optimization since NaN keys cannot
be deleted from maps using delete.
name old time/op new time/op delta
GoMapClear/Reflexive/1 92.2ns ± 1% 47.1ns ± 2% -48.89% (p=0.000 n=9+9)
GoMapClear/Reflexive/10 108ns ± 1% 48ns ± 2% -55.68% (p=0.000 n=10+10)
GoMapClear/Reflexive/100 303ns ± 2% 110ns ± 3% -63.56% (p=0.000 n=10+10)
GoMapClear/Reflexive/1000 3.58µs ± 3% 1.23µs ± 2% -65.49% (p=0.000 n=9+10)
GoMapClear/Reflexive/10000 28.2µs ± 3% 10.3µs ± 2% -63.55% (p=0.000 n=9+10)
GoMapClear/NonReflexive/1 121ns ± 2% 124ns ± 7% ~ (p=0.097 n=10+10)
GoMapClear/NonReflexive/10 137ns ± 2% 139ns ± 3% +1.53% (p=0.033 n=10+10)
GoMapClear/NonReflexive/100 331ns ± 3% 334ns ± 2% ~ (p=0.342 n=10+10)
GoMapClear/NonReflexive/1000 3.64µs ± 3% 3.64µs ± 2% ~ (p=0.887 n=9+10)
GoMapClear/NonReflexive/10000 28.1µs ± 2% 28.4µs ± 3% ~ (p=0.247 n=10+10)
Fixes#20138
Change-Id: I181332a8ef434a4f0d89659f492d8711db3f3213
Reviewed-on: https://go-review.googlesource.com/110055
Reviewed-by: Keith Randall <khr@golang.org>
The phrase "couple X" is considered colloquial, so make that "a couple of X".
Also move the start of a sentence to a new line in a couple of places
for easier editing, in one place thereby removing two spaces after a period.
Change-Id: If5ef05eb496afc235f8f0134c4e7346375a65181
Reviewed-on: https://go-review.googlesource.com/112176
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Change-Id: I1cb7c8b70a5ae16386f6abb577c23d821f7ff7f0
Reviewed-on: https://go-review.googlesource.com/112197
Reviewed-by: Peter Weinberger <pjw@google.com>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
The videos on the front page are always the same width, regardless of
the viewport width. These changes let the video fill the space given
to its container regardless of layout. It uses the standard hack for
making iframes responsive, but the videos are loaded at random and do
not have uniform aspect ratios so that information is injected into the
DOM using custom properties. If these are not supported, it falls back
to the same layout present before this change.
Note: this change also requires CL 108678 to complete the fix,
though either CL without the other is harmless.
Updates #24997.
Change-Id: I2f93dc21ffe01d99ce0e175e9dd0e3d486fddc9f
Reviewed-on: https://go-review.googlesource.com/108677
Run-TryBot: Andrew Bonventre <andybons@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Andrew Bonventre <andybons@golang.org>
Some *mem ops are loads, some are stores, some are modifications.
Replace mem->load for the loads.
Replace mem->store for the stores.
Replace mem->modify for the load-modify-stores.
The only semantic change in this CL is to mark
ADD(Q|L)constmodify (which used to be ADD(Q|L)constmem) as
both a read and a write, instead of just a write. This is arguably
a bug fix, but the bug isn't triggerable at the moment, see CL 112157.
Change-Id: Iccb45aea817b606adb2d712ff99b10ee28e4616a
Reviewed-on: https://go-review.googlesource.com/112159
Run-TryBot: Keith Randall <khr@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Missing rule to fold out Convert ops on 32-bit architectures.
This comes up with expressions like
unsafe.Pointer(uintptr(p) + x)
Change-Id: I429e968e5d1a3e13a386ddd29a08ebb6d7dd938a
Reviewed-on: https://go-review.googlesource.com/112158
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: David Chase <drchase@google.com>
If the modify ops operate on a variable, we should tell the liveness
pass that the variable is still live before the instruction.
This looks like a bug, but I don't think there's any way to trigger
it at the moment. It only matters for pointer-containing values, and
the modify ops don't normally work on pointers. Even when I reach for
unsafe.Pointer tricks, I can't get ADDLmodify to work on pointers, as
there's always a Convert or VarDef preventing the coalescing.
TL;DR I can't figure out a test for this. But we should probably
fix it anyway.
Change-Id: I971c62616dec51a33788b7634e6478e1bfcd6260
Reviewed-on: https://go-review.googlesource.com/112157
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Currently go list -test runtime/cgo fails with an index out of range
error. This appears to be because the updating of import paths that
happens as part of -test doesn't take into account the fact that the
Internal.Imports of a package do not contain "C", whereas the public
Imports do.
Therefore we skip the public Import of "C" if it exists and continue.
Change-Id: I5cdc8968890fa7e5da3e375718606037d3282754
Reviewed-on: https://go-review.googlesource.com/111175
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
pkg-config errors were missing a space between pkg-config flags and packages
e.g. pkg-config --cflags --staticsdl2
Fixes#25260
Change-Id: Iacecb697c5782c4822db9eefa1a2e4c4daf91a69
GitHub-Last-Rev: 2adf8576be
GitHub-Pull-Request: golang/go#25261
Reviewed-on: https://go-review.googlesource.com/111638
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Avoid using values that do not dominate the block the Zero op is in.
Should fix the SSA check builder.
The additional OffPtr ops inserted by these rules should always be
optimized away when the Load is replaced with a const zero.
Fixes#25288.
Change-Id: I4163b58e60364f77c8a206ba084073a58ca6320a
Reviewed-on: https://go-review.googlesource.com/112136
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
Use conditional moves instead of subtractions with borrow to handle
saturation cases. This allows us to delete the SUBE/SUBEW ops and
associated rules from the SSA backend. Using conditional moves also
means we can detect when shift values are masked so I've added some
new rules to constant fold the relevant comparisons and masking ops.
Also use the new shiftIsBounded() function to avoid generating code
to handle saturation cases where possible.
Updates #25167 for s390x.
Change-Id: Ief9991c91267c9151ce4c5ec07642abb4dcc1c0d
Reviewed-on: https://go-review.googlesource.com/110070
Run-TryBot: Michael Munday <mike.munday@ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Now that the iOS exec wrapper uninstalls any existing test app before
installing a new, looking up the device app path might fail. Before,
the lookup always succeeded (even though the path reported might be
stale).
For the iOS builder.
Change-Id: I5667b6fae15f88745bdee796db219a429a26e203
Reviewed-on: https://go-review.googlesource.com/112075
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
To avoid allocation between entersyscall and exitsyscall in Plan 9,
syscall error strings retrieved from the OS were being stored in
a shared buffer for each M, leading to overwriting of error strings
by subsequent syscalls, and potential confusion if exitsyscall
switched to a different M. Instead, the error string is now
retrieved to the G stack and then copied to a new allocated array
after exitsyscall.
A new test TestPlan9Syserr is provided to confirm the correction.
Fixes#13770Fixes#24921
Change-Id: I013c4a42baae80d03a5b61d828396527189f5551
Reviewed-on: https://go-review.googlesource.com/111195
Reviewed-by: David du Colombier <0intro@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: David du Colombier <0intro@gmail.com>
Provide a complete list of EM_* and ELFOSABI_* constants.
Compiled from the tables at
http://www.sco.com/developers/gabi/latest/ch4.eheader.html
and llvm/BinaryFormat/ELF.h from LLVM.
Change-Id: Ice1e1476076fafdb8bb8af848caec6d80a82c452
Reviewed-on: https://go-review.googlesource.com/112115
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
intDataSize should return length of bool slice, so functions
Read and Write can use the fast path to process bool slice.
Change-Id: I8cd275e3ffea82024850662d86caca64bd91bf70
Reviewed-on: https://go-review.googlesource.com/112135
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
This commit adds the wasm architecture to the math package.
Updates #18892
Change-Id: I5cc38552a31b193d35fb81ae87600a76b8b9e9b5
Reviewed-on: https://go-review.googlesource.com/106996
Reviewed-by: Cherry Zhang <cherryyz@google.com>
This commit adds the wasm architecture to the internal/bytealg package.
Some parts of the assembly code have been extracted from WebAssembly
bytecode generated with Emscripten (which uses musl libc).
Updates #18892
Change-Id: Iba7f7158356b816c9ad03ca9223903a41a024da6
Reviewed-on: https://go-review.googlesource.com/103915
Reviewed-by: Keith Randall <khr@golang.org>
