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Commit Graph

29539 Commits

Author SHA1 Message Date
Michal Bohuslávek
e69d63e807 net/http/cookiejar: fix typo
Change-Id: I6ea8650927e7946c6fd4659f400fd91ddaae68af
Reviewed-on: https://go-review.googlesource.com/29510
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-21 15:12:22 +00:00
Austin Clements
c03925edd3 runtime: remove unnecessary atomics from heapBitSetType
These used to be necessary when racing with updates to the mark bit,
but since the mark bit is no longer in the bitmap and the checkmark is
only updated with the world stopped, we can now always use regular
writes to update the type information in the heap bitmap.

Somewhat surprisingly, this has basically no overall performance
effect beyond the usual noise, but it does clean up the code.

Change-Id: I3933d0b4c0bc1c9bcf6313613515c0b496212105
Reviewed-on: https://go-review.googlesource.com/29277
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
2016-09-21 15:08:16 +00:00
Mikio Hara
43d9c29abb doc: add note about CL 29491 to go1.8.txt
Change-Id: I808fab97076493a95b0b5eb0ad15645099f54aee
Reviewed-on: https://go-review.googlesource.com/29492
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-21 05:24:29 +00:00
Mikio Hara
6072e4d710 syscall: fix build on dragonfly
This change fixes the broken build caused by CL 23780.

Change-Id: I142cf8a1af033d036d57ac56e9e21ea925d922d4
Reviewed-on: https://go-review.googlesource.com/29490
Run-TryBot: Mikio Hara <mikioh.mikioh@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-21 05:23:57 +00:00
Matthew Dempsky
35d22afb4b cmd/internal/obj: remove unused GOROOT-related fields
Change-Id: I6634f70d6bd1a4eced47eda69a2d9b207d222a1b
Reviewed-on: https://go-review.googlesource.com/29470
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-09-21 01:25:29 +00:00
Matthew Dempsky
e6158b3c46 cmd/internal/obj: remove unused Textp and Etextp fields
Change-Id: Idcb5a8d6676aa38b4ebd0975edd2068386f5ca83
Reviewed-on: https://go-review.googlesource.com/29449
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-21 01:15:56 +00:00
Yasuhiro Matsumoto
b851ded09a os: use GetConsoleCP() instead of GetACP()
It is possible (and common) for Windows systems to use a different codepage
for console applications from that used on normal windowed application
(called ANSI codepage); for instance, most of the western Europe uses
CP850 for console (for backward compatibility with MS-DOS), while
windowed applications use a different codepage depending on the country
(eg: CP1252 aka Latin-1). The usage being changed with this commit is
specifically related to decoding input coming from the console, so the
previous usage of the ANSI codepage was wrong.

Also fixes an issue that previous did convert bytes as NFD. Go is
designed to handle single Unicode code point. This fix change behaivor
to NFC.

Fixes #16857.

Change-Id: I4f41ae83ece47321b6e9a79a2087ecbb8ac066dd
Reviewed-on: https://go-review.googlesource.com/27575
Reviewed-by: Hiroshi Ioka <hirochachacha@gmail.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
2016-09-21 00:38:51 +00:00
Brad Fitzpatrick
16f81b617e image/draw: add FloydSteinberg Drawer example
Updates #16360

Change-Id: I80b981aa291a8e16d2986d4a2dfd84d3819bf488
Reviewed-on: https://go-review.googlesource.com/29443
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
2016-09-21 00:08:58 +00:00
Brad Fitzpatrick
e7191479ec doc: add some missing HTML tags in the FAQ
Fixes #17170

Change-Id: I939f087df133710495fdf6f09040051cb9b176d7
Reviewed-on: https://go-review.googlesource.com/29442
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 23:01:12 +00:00
Keith Randall
dd24b1098a cmd/compile: improve tighten pass
Move a value to the block which is the lowest common ancestor in the
dominator tree of all of its uses.  Make sure not to move a value into a
loop.

Makes the tighten pass on average (across go1 benchmarks) 40% slower.
Still not a big contributor to overall compile time.

Binary size is just a tad smaller.

name                      old time/op    new time/op    delta
BinaryTree17-12              2.77s ± 9%     2.76s ± 9%     ~     (p=0.878 n=8+8)
Fannkuch11-12                2.75s ± 1%     2.74s ± 1%     ~     (p=0.232 n=8+7)
FmtFprintfEmpty-12          48.9ns ± 9%    47.7ns ± 0%     ~     (p=0.431 n=8+8)
FmtFprintfString-12          143ns ± 8%     142ns ± 1%     ~     (p=0.257 n=8+7)
FmtFprintfInt-12             123ns ± 1%     122ns ± 1%   -1.04%  (p=0.026 n=7+8)
FmtFprintfIntInt-12          195ns ± 7%     185ns ± 0%   -5.32%  (p=0.000 n=8+8)
FmtFprintfPrefixedInt-12     194ns ± 4%     195ns ± 0%   +0.81%  (p=0.015 n=7+7)
FmtFprintfFloat-12           267ns ± 0%     268ns ± 0%   +0.37%  (p=0.001 n=7+6)
FmtManyArgs-12               800ns ± 0%     762ns ± 1%   -4.78%  (p=0.000 n=8+8)
GobDecode-12                7.67ms ± 2%    7.60ms ± 2%     ~     (p=0.234 n=8+8)
GobEncode-12                6.55ms ± 0%    6.57ms ± 1%     ~     (p=0.336 n=7+8)
Gzip-12                      237ms ± 0%     238ms ± 0%   +0.40%  (p=0.017 n=7+7)
Gunzip-12                   40.8ms ± 0%    40.2ms ± 0%   -1.52%  (p=0.000 n=7+8)
HTTPClientServer-12          208µs ± 3%     209µs ± 3%     ~     (p=0.955 n=8+7)
JSONEncode-12               16.2ms ± 1%    17.2ms ±11%   +5.80%  (p=0.001 n=7+8)
JSONDecode-12               57.3ms ±12%    55.5ms ± 3%     ~     (p=0.867 n=8+7)
Mandelbrot200-12            4.68ms ± 6%    4.46ms ± 1%     ~     (p=0.442 n=8+8)
GoParse-12                  4.27ms ±44%    3.42ms ± 1%  -19.95%  (p=0.005 n=8+8)
RegexpMatchEasy0_32-12      75.1ns ± 0%    75.8ns ± 1%   +0.99%  (p=0.002 n=7+7)
RegexpMatchEasy0_1K-12       963ns ± 0%    1021ns ± 6%   +5.98%  (p=0.001 n=7+7)
RegexpMatchEasy1_32-12      72.4ns ±11%    70.8ns ± 1%     ~     (p=0.368 n=8+8)
RegexpMatchEasy1_1K-12       394ns ± 1%     399ns ± 0%   +1.23%  (p=0.000 n=8+7)
RegexpMatchMedium_32-12      114ns ± 0%     115ns ± 1%   +0.63%  (p=0.021 n=7+7)
RegexpMatchMedium_1K-12     35.9µs ± 0%    37.6µs ± 1%   +4.72%  (p=0.000 n=7+8)
RegexpMatchHard_32-12       1.93µs ± 2%    1.91µs ± 0%   -0.91%  (p=0.001 n=7+7)
RegexpMatchHard_1K-12       60.2µs ± 3%    61.2µs ±10%     ~     (p=0.442 n=8+8)
Revcomp-12                   404ms ± 1%     406ms ± 1%     ~     (p=0.054 n=8+7)
Template-12                 64.6ms ± 1%    63.5ms ± 1%   -1.66%  (p=0.000 n=8+8)
TimeParse-12                 347ns ± 8%     309ns ± 0%  -11.13%  (p=0.000 n=8+7)
TimeFormat-12                343ns ± 4%     331ns ± 0%   -3.34%  (p=0.000 n=8+7)

Change-Id: Id6da1239ddd4d0cb074ff29cffb06302d1c6d08f
Reviewed-on: https://go-review.googlesource.com/28712
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2016-09-20 22:49:48 +00:00
Keith Randall
b7426089e5 cmd/compile: simple cleanups
Change-Id: If2cf3c5a29afc6cf74c3b08b9745e950231ead37
Reviewed-on: https://go-review.googlesource.com/29441
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-20 21:45:56 +00:00
Damien Neil
f5f7d6e32d syscall: validate ParseDirent inputs
Don't panic, crash, or return references to uninitialized memory when
ParseDirent is passed invalid input.

Move common dirent parsing to syscall.go with minimal platform-specific
functions in syscall_$GOOS.go.

Fixes #15653

Change-Id: I5602475e02321fe381064488401c14b33bec6886
Reviewed-on: https://go-review.googlesource.com/23780
Run-TryBot: Damien Neil <dneil@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-20 19:27:57 +00:00
Austin Clements
ab59235729 runtime: consistency check for G rescan position
Issue #17099 shows a failure that indicates we rescanned a stack twice
concurrently during mark termination, which suggests that the rescan
list became inconsistent. Add a simple check when we dequeue something
from the rescan list that it claims to be at the index where we found
it.

Change-Id: I6a267da4154a2e7b7d430cb4056e6bae978eaf62
Reviewed-on: https://go-review.googlesource.com/29280
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
2016-09-20 18:37:32 +00:00
Austin Clements
39ce6eb9ec runtime: report GCSys and OtherSys in heap profile
The comment block at the end of the heap profile includes *almost*
everything from MemStats. Add the missing fields. These are useful for
debugging RSS that has gone to GC-internal data structures.

Change-Id: I0ee8a918d49629e28fd8fd2bf6861c4529461c24
Reviewed-on: https://go-review.googlesource.com/29276
Run-TryBot: Austin Clements <austin@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Rick Hudson <rlh@golang.org>
2016-09-20 18:37:29 +00:00
Cherry Zhang
38cd79889e cmd/compile: simplify div/mod on ARM
On ARM, DIV, DIVU, MOD, MODU are pseudo instructions that makes
runtime calls _div/_udiv/_mod/_umod, which themselves are wrappers
of udiv. The udiv function does the real thing.

Instead of generating these pseudo instructions, call to udiv
directly. This removes one layer of wrappers (which has an awkward
way of passing argument), and also allows combining DIV and MOD
if both results are needed.

Change-Id: I118afc3986db3a1daabb5c1e6e57430888c91817
Reviewed-on: https://go-review.googlesource.com/29390
Reviewed-by: David Chase <drchase@google.com>
2016-09-20 13:40:48 +00:00
Jaana Burcu Dogan
f964810025 net/http/httptrace: fix bad tracing example
Tracing happens at the http.Trace level. Fix the example to demostrate
tracing in the lifecycle of a RoundTrip.

Updates #17152.

Change-Id: Ic7d7bcc550176189206185482e8962dbf1504ff1
Reviewed-on: https://go-review.googlesource.com/29431
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-20 05:11:45 +00:00
Michael Hudson-Doyle
836a3ae663 cmd/link: remove more unused ctxt parameters
This time in elf.go.

Change-Id: Ifaf71742ebbc9aadc8606c39ea2d417ae5cc7e0d
Reviewed-on: https://go-review.googlesource.com/29450
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 04:21:16 +00:00
Michael Hudson-Doyle
b6324ef5ff cmd/link: kill off Symbols.Version
Change-Id: Iee8f773355870f2333637a093e51c5fd36e5a6e5
Reviewed-on: https://go-review.googlesource.com/29349
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 04:20:50 +00:00
Michael Hudson-Doyle
6383709272 cmd/link: remove now-unused ctxt arguments from a few functions
Specifically Addstring, Addbytes and Symgrow.

Change-Id: Ia74093bfcf9f360bf223accbc8feef54a7f059c9
Reviewed-on: https://go-review.googlesource.com/29348
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 04:13:16 +00:00
Michael Hudson-Doyle
25d094034b cmd/link: remove Linklookup & Linkrlookup
Change-Id: I25d9f74cb52e6fd4f2ad4b1c8b7102efadbc7481
Reviewed-on: https://go-review.googlesource.com/29344
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 04:12:57 +00:00
Michael Hudson-Doyle
324f6ab48c cmd/link: use ctxt.{Lookup,ROLookup} in favour of function versions of same
Done with two eg templates:

package p

import (
	"cmd/link/internal/ld"
)

func before(ctxt *ld.Link, name string, v int) *ld.Symbol {
	return ld.Linklookup(ctxt, name, v)
}
func after(ctxt *ld.Link, name string, v int) *ld.Symbol {
	return ctxt.Syms.Lookup(name, v)
}

package p

import (
	"cmd/link/internal/ld"
)

func before(ctxt *ld.Link, name string, v int) *ld.Symbol {
	return ld.Linkrlookup(ctxt, name, v)
}
func after(ctxt *ld.Link, name string, v int) *ld.Symbol {
	return ctxt.Syms.ROLookup(name, v)
}

Change-Id: I00647dbf62294557bd24c29ad1f108fc786335f1
Reviewed-on: https://go-review.googlesource.com/29343
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 04:12:43 +00:00
Michael Hudson-Doyle
d41a7f77c5 cmd/link: do not directly embed Symbols in Link
Mostly done with sed.

Change-Id: Ic8c534a3fdd332b5420d062ee85bb77a30ad1efb
Reviewed-on: https://go-review.googlesource.com/29346
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 04:12:28 +00:00
Michael Hudson-Doyle
d284d4ff92 cmd/link: split "bag of Symbols" functionality out of Link
Mechanical refactorings to follow.

Change-Id: I9b98e69a58c3cba7c7d1d3e3f600d4ed99d4fce2
Reviewed-on: https://go-review.googlesource.com/29342
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-20 04:12:12 +00:00
David Crawshaw
e9fddf8f86 cmd/internal/obj, cmd/link: darwin dynlink support
This makes it possible for cmd/compile, when run with -dynlink on
darwin/amd64, to generate TLS_LE relocations which the linker then
turns into the appropriate PC-relative GOT load.

Change-Id: I1a71da432608bdb108ff66c22de600100209c873
Reviewed-on: https://go-review.googlesource.com/29393
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-20 03:15:15 +00:00
David Crawshaw
1d3fae461c cmd/link: remove Cursym
Change-Id: I58253a6cd2d77a9319c0783afb0d92cd5a88a7f7
Reviewed-on: https://go-review.googlesource.com/29370
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
2016-09-20 02:42:16 +00:00
David Crawshaw
5a597e2d29 cmd/link: replace ld.Link.Diag with ld.Errorf
Instead of using ctxt.Cursym, Errorf takes an explicit *Symbol
parameter. This removes most uses of Cursym and means the *Link
context object is needed in fewer parts of the linker.

All transformations done manually, as wiring Cursym is tricky.

Change-Id: Ief88b00b73904224675c0035684c3a84c19249d7
Reviewed-on: https://go-review.googlesource.com/29369
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Michael Hudson-Doyle <michael.hudson@canonical.com>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-20 02:36:39 +00:00
Keith Randall
bd3d00e310 doc: mention KeepAlive & input args change
Change-Id: Icfb38f492ae71432858b7104fcba18a9ba835192
Reviewed-on: https://go-review.googlesource.com/29410
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-19 23:02:04 +00:00
Michael Hudson-Doyle
50644f2e67 cmd/link: move comment somewhere more appropriate
At least, I assume it's meant to be here. It makes no sense at all where it
currently is.

Change-Id: Ic6a6c112c3dcf1318256d7d602168c3446b55412
Reviewed-on: https://go-review.googlesource.com/29339
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-19 21:42:57 +00:00
Tormod Erevik Lea
b625810d28 cmd/vet: hard-code program name in usage message
Example on linux_amd64 for 'go tool vet -h':

Before:
	Usage of /usr/local/go/pkg/tool/linux_amd64/vet:
After:
	Usage of vet:

Change-Id: I11cb16b656bd097062d57a8c7441fbe66caaef78
Reviewed-on: https://go-review.googlesource.com/29294
Reviewed-by: Rob Pike <r@golang.org>
2016-09-19 20:26:36 +00:00
Rob Pike
3cca069220 time: allow long fractions in ParseDuration
The code scanned for an integer after a decimal point, which
meant things could overflow if the number was very precise
(0.1234123412341234123412342134s). This fix changes the
parser to stop adding precision once we run out of bits, rather
than trigger an erroneous overflow.

We could parse durations using floating-point arithmetic,
but since the type is int64 and float64 has only has 53 bits
of precision, that would be imprecise.

Fixes #15011.

Change-Id: If85e22b8f6cef12475e221169bb8f493bb9eb590
Reviewed-on: https://go-review.googlesource.com/29338
Reviewed-by: Costin Chirvasuta <costinc@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-19 19:46:09 +00:00
Michael Munday
e94c52933b cmd/compile: intrinsify Ctz{32,64} and Bswap{32,64} on s390x
Also adds the 'find leftmost one' instruction (FLOGR) and replaces the
WORD-encoded use of FLOGR in math/big with it.

Change-Id: I18e7cd19e75b8501a6ae8bd925471f7e37ded206
Reviewed-on: https://go-review.googlesource.com/29372
Reviewed-by: Cherry Zhang <cherryyz@google.com>
Run-TryBot: Michael Munday <munday@ca.ibm.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-19 19:03:01 +00:00
Carlos Eduardo Seo
f1973fca71 cmd/asm, cmd/internal/obj/ppc64: add ppc64 vector registers and instructions
The current implementation for Power architecture does not include the vector
(Altivec) registers.  This adds the 32 VMX registers and the most commonly used
instructions: X-form loads/stores; VX-form logical operations, add/sub,
rotate/shift, count, splat, SHA Sigma and AES cipher; VC-form compare; and
VA-form permute, shift, add/sub and select.

Fixes #15619

Change-Id: I544b990631726e8fdfcce8ecca0aeeb72faae9aa
Reviewed-on: https://go-review.googlesource.com/25600
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Lynn Boger <laboger@linux.vnet.ibm.com>
Reviewed-by: David Chase <drchase@google.com>
2016-09-19 18:39:36 +00:00
Emmanuel Odeke
31ba855014 crypto/md5, crypto/sha1, crypto/sha256: add examples for checksumming a file
Updates #16360.

Change-Id: I75714d2b5f095fe39fd81edfa6dd9e44d7c44da1
Reviewed-on: https://go-review.googlesource.com/29375
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-19 17:29:19 +00:00
Keith Randall
ca4089ad62 cmd/compile: args no longer live until end-of-function
We're dropping this behavior in favor of runtime.KeepAlive.
Implement runtime.KeepAlive as an intrinsic.

Update #15843

Change-Id: Ib60225bd30d6770ece1c3c7d1339a06aa25b1cbc
Reviewed-on: https://go-review.googlesource.com/28310
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Chase <drchase@google.com>
2016-09-19 16:54:35 +00:00
Brady Sullivan
faf611a07a net/http: rename Post's parameter from bodyType to contentType
Change-Id: Ie1b08215c02ce3ec72a4752f4b800f23345ff99d
Reviewed-on: https://go-review.googlesource.com/29362
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-19 16:08:31 +00:00
Keith Randall
75ce89c20d cmd/compile: cache CFG-dependent computations
We compute a lot of stuff based off the CFG: postorder traversal,
dominators, dominator tree, loop nest.  Multiple phases use this
information and we end up recomputing some of it.  Add a cache
for this information so if the CFG hasn't changed, we can reuse
the previous computation.

Change-Id: I9b5b58af06830bd120afbee9cfab395a0a2f74b2
Reviewed-on: https://go-review.googlesource.com/29356
Reviewed-by: David Chase <drchase@google.com>
2016-09-19 16:00:13 +00:00
Keith Randall
2679282da4 cmd/compile: fold ADDconsts together for PPC
Change-Id: I571f03af6f791e78e7e18addcc310eb25747cdcf
Reviewed-on: https://go-review.googlesource.com/29351
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: David Chase <drchase@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-19 15:57:29 +00:00
Keith Randall
6129f37367 cmd/compile: inline convT2{I,E} when result doesn't escape
No point in calling a function when we can build the interface
using a known type (or itab) and the address of a local.

Get rid of third arg (preallocated stack space) to convT2{I,E}.

Makes go binary smaller by 0.2%

benchmark                   old ns/op     new ns/op     delta
BenchmarkEfaceInteger-8     16.7          10.1          -39.52%

Update #17118
Update #15375

Change-Id: I9724a1f802bfa1e3957bf1856b55558278e198a2
Reviewed-on: https://go-review.googlesource.com/29373
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2016-09-19 02:37:08 +00:00
Rob Pike
892d146a7a cmd/vet: fix documentation for -structtags
Was missing a title in the documentation, so it formatted wrong.

Fixes #17124

Change-Id: Ie8a9c36fbc54eed7d8a761f89a088e582b8c062d
Reviewed-on: https://go-review.googlesource.com/29340
Reviewed-by: Andrew Gerrand <adg@golang.org>
2016-09-19 02:02:44 +00:00
Michael Hudson-Doyle
dcb954c3f7 cmd/link: remove size and version from genasmsym's argument
They are trivially available in the few places they are needed.

Change-Id: I6544692e9027076ec9e6e9a295c66457039e55e1
Reviewed-on: https://go-review.googlesource.com/29332
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-18 21:59:20 +00:00
Michael Hudson-Doyle
2266047556 cmd/link: give names and a type to the symbol types used by genasmsym
Doing this revealed some dead code.

Change-Id: I5202fcc3f73e3dfddfea3ec7b772e16da51195da
Reviewed-on: https://go-review.googlesource.com/29331
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-18 21:59:09 +00:00
Cherry Zhang
c1bee49cac cmd/dist: fix internal linking check for mips64le
Fix mips64le build.

Change-Id: Icf1b4901655463f582b49054a88edfb06ad6c676
Reviewed-on: https://go-review.googlesource.com/29281
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>
2016-09-18 20:15:13 +00:00
Cherry Zhang
964639cc33 cmd/compile: intrinsify runtime/internal/atomic.Xaddint64
This aliases to Xadd64.

Change-Id: I95d49e1d03eecc242e9e6fd4b2742b1c1a1d5ade
Reviewed-on: https://go-review.googlesource.com/29274
Run-TryBot: Cherry Zhang <cherryyz@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
2016-09-17 14:21:32 +00:00
David Crawshaw
5c0fbf052b plugin: cast dlerror return value for android
Until a few weeks ago, bionic, the Andoid libc, incorrectly
returned const char* (instead of char*) from dlerror(3).

5e071a18ce

Change-Id: I30d33240c63a9f35b6c20ca7e3928ad33bc5e33f
Reviewed-on: https://go-review.googlesource.com/29352
Run-TryBot: David Crawshaw <crawshaw@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
2016-09-17 13:47:37 +00:00
Keith Randall
2e2db7a170 cmd/compile: fix format verbs in ssa package
%s is no longer valid.  Use %v instead.

Change-Id: I5ec4fa6a9280082c1a0c75fd1cf94b4bb8096f5c
Reviewed-on: https://go-review.googlesource.com/29365
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
2016-09-17 02:54:11 +00:00
Matthew Dempsky
246074d043 cmd/internal/obj: remove ACHECKNIL
Updates #16357.

Change-Id: I35f938d675ca5c31f65c4419ee0732bbc593b5cb
Reviewed-on: https://go-review.googlesource.com/29368
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Dave Cheney <dave@cheney.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 02:38:24 +00:00
Matthew Dempsky
e518962a27 cmd/internal/obj: simplify Plists
Keep Plists in a slice instead of a linked list.
Eliminate unnecessary fields.
Also, while here remove gc's unused breakpc and continpc vars.

Change-Id: Ia04264036c0442843869965d247ccf68a5295115
Reviewed-on: https://go-review.googlesource.com/29367
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Dave Cheney <dave@cheney.net>
2016-09-17 02:09:23 +00:00
Trey Lawrence
fc5df089da cmd/compile: fix compiler bug for constant equality comparison
The compiler incorrectly will error when comparing a nil pointer
interface to a nil pointer of any other type. Example:
(*int)(nil) == interface{}(nil)
Will error with "gc: illegal constant expression: *int == interface {}"

Fixes #16702

Change-Id: I1a15d651df2cfca6762b1783a28b377b2e6ff8c6
Reviewed-on: https://go-review.googlesource.com/27591
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2016-09-17 01:12:24 +00:00
Matthew Dempsky
6fe1febc86 cmd/internal/obj: replace AGLOBL with (*Link).Globl
Replace the AGLOBL pseudo-op with a method to directly register an
LSym as a global. Similar to how we previously already replaced the
ADATA pseudo-op with directly writing out data bytes.

Passes toolstash -cmp.

Change-Id: I3631af0a2ab5798152d0c26b833dc309dbec5772
Reviewed-on: https://go-review.googlesource.com/29366
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Dave Cheney <dave@cheney.net>
TryBot-Result: Gobot Gobot <gobot@golang.org>
2016-09-17 00:51:47 +00:00
Dan Peterson
a1bf203b57 net: respect resolv.conf rotate option
Instead of ranging over servers in the config, grab an offset
from the config that is used to determine indices.

When the rotate option is enabled, the offset increases which
rotates queries through servers. Otherwise, it is always 0
which uses servers in config order.

Fixes #17126

Change-Id: If233f6de7bfa42f88570055b9ab631be08a76b3e
Reviewed-on: https://go-review.googlesource.com/29233
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
2016-09-17 00:34:19 +00:00