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Commit Graph

10687 Commits

Author SHA1 Message Date
Robert Griesemer
1659aef399 go/ast: track position of <- for channel types
This is a backward-compatible API change.

Without the correct <- position information,
certain channel types have incorrect position
information.

R=iant, iant
CC=golang-dev
https://golang.org/cl/6585063
2012-10-02 17:50:36 -07:00
Shivakumar GN
5f7f9062db os/user : use username as fullname if all else fails (on windows)
Fixes #4113.

R=golang-dev, alex.brainman
CC=golang-dev
https://golang.org/cl/6545054
2012-10-03 10:33:09 +10:00
Robert Griesemer
05dc3bf572 go/parser: correctly parse <-chan T(x) as <-(chan T)(x)
Fixes #4110.

R=iant
CC=golang-dev
https://golang.org/cl/6597069
2012-10-02 16:48:30 -07:00
Rémy Oudompheng
2de064b63c cmd/8g: do not take the address of string/slice for &s[i]
A similar change was made in 6g recently.

LEALs in cmd/go: 31440 before, 27867 after.

benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    7065794000   6723617000   -4.84%
BenchmarkFannkuch11      7767395000   7477945000   -3.73%
BenchmarkGobDecode         34708140     34857820   +0.43%
BenchmarkGobEncode         10998780     10960060   -0.35%
BenchmarkGzip            1603630000   1471052000   -8.27%
BenchmarkGunzip           242573900    240650400   -0.79%
BenchmarkJSONEncode       120842200    117966100   -2.38%
BenchmarkJSONDecode       247254900    249103100   +0.75%
BenchmarkMandelbrot200     29237330     29241790   +0.02%
BenchmarkParse              8111320      8096865   -0.18%
BenchmarkRevcomp         2595780000   2694153000   +3.79%
BenchmarkTemplate         276679600    264497000   -4.40%

benchmark                              old ns/op    new ns/op    delta
BenchmarkAppendFloatDecimal                  429          416   -3.03%
BenchmarkAppendFloat                         780          740   -5.13%
BenchmarkAppendFloatExp                      746          700   -6.17%
BenchmarkAppendFloatNegExp                   752          694   -7.71%
BenchmarkAppendFloatBig                     1228         1108   -9.77%
BenchmarkAppendFloat32Integer                457          416   -8.97%
BenchmarkAppendFloat32ExactFraction          662          631   -4.68%
BenchmarkAppendFloat32Point                  771          735   -4.67%
BenchmarkAppendFloat32Exp                    722          672   -6.93%
BenchmarkAppendFloat32NegExp                 724          659   -8.98%
BenchmarkAppendFloat64Fixed1                 429          400   -6.76%
BenchmarkAppendFloat64Fixed2                 463          442   -4.54%

Update #1914.

R=golang-dev, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6574043
2012-10-02 08:19:27 +02:00
Dmitriy Vyukov
041fc8bf96 race: gc changes
This is the first part of a bigger change that adds data race detection feature:
https://golang.org/cl/6456044
This change makes gc compiler instrument memory accesses when supplied with -b flag.

R=rsc, nigeltao, lvd
CC=golang-dev
https://golang.org/cl/6497074
2012-10-02 10:05:46 +04:00
Andrew Gerrand
cf513387c3 go/doc: strip example output comment from synthesized main function
R=gri
CC=gobot, golang-dev
https://golang.org/cl/6524047
2012-10-02 08:35:20 +10:00
Dave Cheney
7b36acc4ac cmd/5g: avoid temporary during constant binary op
This CL is an attempt to backport the abop code generation from 6g. This improves the generation of the range offset if the increment can be encoded directly via Operand2 shift encoding.

0023 (/home/dfc/src/range.go:7) BGE     ,29(APC)
0024 (/home/dfc/src/range.go:7) MOVW    0(R3),R5
0025 (/home/dfc/src/range.go:7) MOVW    $4,R1
0026 (/home/dfc/src/range.go:7) ADD     R1,R3,R3
0027 (/home/dfc/src/range.go:8) ADD     R5,R4,R4
0028 (/home/dfc/src/range.go:7) B       ,17(APC)

becomes

0023 (/home/dfc/src/range.go:7) BGE     ,28(APC)
0024 (/home/dfc/src/range.go:7) MOVW    0(R3),R0
0025 (/home/dfc/src/range.go:7) ADD     $4,R3,R3
0026 (/home/dfc/src/range.go:8) ADD     R0,R4,R4
0027 (/home/dfc/src/range.go:7) B       ,17(APC)

Benchmarks are unimpressive

dfc@qnap:~/go/test/bench/go1$ ~/go/misc/benchcmp {old,new}.txt
benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    2147483647   2147483647   +0.93%
BenchmarkFannkuch11      2147483647   2147483647   -2.52%
BenchmarkGobDecode        196135200    195842000   -0.15%
BenchmarkGobEncode         78581650     76734450   -2.35%
BenchmarkGzip            2147483647   2147483647   -0.47%
BenchmarkGunzip          1087243000   1070254000   -1.56%
BenchmarkJSONEncode      1107558000   1146077000   +3.48%
BenchmarkJSONDecode      2147483647   2147483647   -0.07%
BenchmarkMandelbrot200   2147483647   2147483647   -0.77%
BenchmarkParse             74328550     71653400   -3.60%
BenchmarkRevcomp          111123900    109325950   -1.62%
BenchmarkTemplate        2147483647   2147483647   -0.82%

benchmark                  old MB/s     new MB/s  speedup
BenchmarkGobDecode             3.91         3.92    1.00x
BenchmarkGobEncode             9.77        10.00    1.02x
BenchmarkGzip                  3.65         3.66    1.00x
BenchmarkGunzip               17.85        18.13    1.02x
BenchmarkJSONEncode            1.75         1.69    0.97x
BenchmarkJSONDecode            0.83         0.83    1.00x
BenchmarkParse                 0.78         0.81    1.04x
BenchmarkRevcomp              22.87        23.25    1.02x
BenchmarkTemplate              0.84         0.85    1.01x

R=remyoudompheng, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6564067
2012-10-02 08:12:39 +10:00
Jeremy Jackins
b9e423eff3 archive/tar: fix inconsistent namespace usage in example
This fixes some example code in the tar package documentation, which
first refers to tar.NewWriter and then to Header, which is inconsistent
because NewWriter and Header are both in the tar namespace.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6595050
2012-10-02 08:10:42 +10:00
Adam Langley
9070d5759f math/big: avoid some allocation in Exp
benchmark                        old ns/op    new ns/op    delta
BenchmarkRSA1024Decrypt             745686       644964  -13.51%
BenchmarkRSA2048Decrypt            5517318      5049200   -8.48%
Benchmark3PrimeRSA2048Decrypt      3767386      3288048  -12.72%

R=gri
CC=gobot, golang-dev
https://golang.org/cl/6566043
2012-10-01 17:31:35 -04:00
Robert Griesemer
5a03cd56a1 cmd/godoc: clearer comments in FormatSelections
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6561073
2012-10-01 14:17:25 -07:00
Akshat Kumar
48bd5c5010 cmd/go/build: Add magic data for Plan 9 binaries.
This change allows the Go build and install tools to
recognize Plan 9 i386 and amd64 binaries.

R=rsc, r, rminnich
CC=golang-dev
https://golang.org/cl/6575064
2012-10-01 15:04:52 -04:00
Luuk van Dijk
78ba449a3c cmd/gc: Missing break in esc switch.
R=rsc
CC=golang-dev
https://golang.org/cl/6594053
2012-10-01 16:33:06 +02:00
Akshat Kumar
af582674b0 pkg/syscall: Plan 9, 64-bit: Update error checks from sys calls.
This change updates CL 6576057 for exceptional cases where
return values from Syscall/RawSyscall functions are used.

The system calls return 32-bit integers. With the recent change
in size of `int' in Go for amd64, the type conversion was not
catching `-1' return values. This change makes the conversion
explicitly `int32'.

R=rsc, r
CC=golang-dev
https://golang.org/cl/6590047
2012-10-01 10:09:08 +10:00
David Symonds
ff2f851af1 exp/types: permit importing packages without available source.
R=gri, iant
CC=golang-dev
https://golang.org/cl/6586051
2012-09-30 15:56:23 +10:00
David Symonds
0b448bdef7 exp/types: better diagnosis for compile failures.
R=gri, dave
CC=golang-dev
https://golang.org/cl/6587046
2012-09-30 15:46:37 +10:00
Shenghou Ma
9a3bc51c81 test/fixedbugs/bug454.go: add a test for CL 6564052
Also mention that ignoring second blank identifier of range is required by the spec in the code.

   Fixes #4173.

R=daniel.morsing, remyoudompheng, r
CC=golang-dev
https://golang.org/cl/6594043
2012-09-29 23:23:56 +08:00
Mikio Hara
2fee6e3788 syscall: add ipv4 ancillary data for darwin
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6586044
2012-09-29 12:43:05 +09:00
Paul Chang
7c8e26ee2f cmd/godoc: fix minor bug in FormatSelections.
FormatSelections tries to call a nil function value if lw is nil
and the final entry in the selections array is non-nil. Luckily,
this doesn't actually happen in practice since godoc doesn't use
this combination (no line numbers, but with selections).

R=gri
CC=gobot, golang-dev
https://golang.org/cl/6488106
2012-09-28 14:19:43 -07:00
Robert Griesemer
de782dd146 container/list: slightly better code factoring
R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6569077
2012-09-28 10:58:46 -07:00
Robert Griesemer
0e9daef2d1 container/list: Correctly maintain internal invariants
The previous implementation was a mess with invariants
maintained inconsistently. Essentially reimplemented
the package:

- used a circular list as internal representation for
  significantly simpler implementation with fewer
  special cases while maintaining the illusion of
  a nil-terminated doubly linked list externally

- more precise documentation

- cleaned up and simplified tests, added test case
  for issue 4103.

No changes to the API or documented semantics.

All this said, I would be in favor of removing
this package eventually. container/ring provides
a faster implementation and a simpler and more
powerful API.

Fixes #4103.

R=r
CC=golang-dev
https://golang.org/cl/6569072
2012-09-28 10:35:32 -07:00
Eric Roshan-Eisner
631a0e71c1 strings: implement a faster single-string Replacer
The string searching is implemented separately so other functions
may make use of it in the future.

benchmark                        old ns/op    new ns/op    delta
BenchmarkSingleMaxSkipping          125889         2474  -98.03%
BenchmarkSingleLongSuffixFail        16252         1996  -87.72%
BenchmarkSingleMatch                260793       136266  -47.75%

benchmark                         old MB/s     new MB/s  speedup
BenchmarkSingleMaxSkipping           79.43      4041.57   50.88x
BenchmarkSingleLongSuffixFail        61.65       501.81    8.14x
BenchmarkSingleMatch                 57.52       110.08    1.91x

R=nigeltao
CC=golang-dev
https://golang.org/cl/6545049
2012-09-28 12:34:18 +10:00
Eric Roshan-Eisner
4bf6249ba5 testing: remove redundant whitespace in output
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6565061
2012-09-28 10:01:09 +10:00
Akshat Kumar
8fdc90acf4 pkg/syscall: Plan 9, 64-bit: Update error checks from sys calls.
The system calls return 32-bit integers. With the recent change
in size of `int' in Go for amd64, the type conversion was not
catching `-1' return values. This change makes the conversion
explicitly `int32'.

R=rsc, rminnich, npe, r
CC=golang-dev
https://golang.org/cl/6576057
2012-09-28 09:56:44 +10:00
Rémy Oudompheng
617b7cf166 cmd/[568]g: header cleanup.
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6573059
2012-09-27 08:34:00 +02:00
Michael Chaten
e289a2b913 bufio: Implement io.WriterTo for (*Reader)
This is part 1 of 2 for issue 4028

benchmark                       old ns/op    new ns/op    delta
BenchmarkReaderCopyOptimal          33495         9849  -70.60%
BenchmarkReaderCopyUnoptimal        70631        27041  -61.72%
BenchmarkReaderCopyOldImpl          51407        52970   +3.04%

Update #4028

R=dave, nigeltao, rsc, bradfitz, rogpeppe
CC=golang-dev
https://golang.org/cl/6548047
2012-09-27 16:31:03 +10:00
Josh Holland
348e31f8f7 text/template: fix typo of errorf as error in comment.
R=r, minux.ma
CC=gobot, golang-dev
https://golang.org/cl/6506120
2012-09-27 15:47:54 +10:00
Rob Pike
b46dd48dd3 cmd/api: delete redundant text from deletion message
R=bradfitz, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6543064
2012-09-27 15:39:56 +10:00
Nigel Tao
791ac65b82 lzw: fix Write returning the wrong number of bytes written.
Fixes #4160.

R=rsc, r
CC=golang-dev
https://golang.org/cl/6564060
2012-09-27 13:29:39 +10:00
Rob Pike
ffea835b8f fmt: allow # and x together for strings
Silly and small but easy to be consistent.
To make it worthwhile, I eliminated an allocation when using
%x on a byte slice.

Fixes #4149.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6574046
2012-09-27 06:21:38 +10:00
Sébastien Paolacci
7014bc64b1 net: spread fd over several pollservers.
Lighten contention without preventing further improvements on pollservers.
Connections are spread over Min(GOMAXPROCS, NumCPU, 8) pollserver instances.

Median of 10 runs, 4 cores @ 3.4GHz, amd/linux-3.2:

BenchmarkTCPOneShot                171917 ns/op   175194 ns/op      1.91%
BenchmarkTCPOneShot-2              101413 ns/op   109462 ns/op      7.94%
BenchmarkTCPOneShot-4               91796 ns/op    35712 ns/op    -61.10%
BenchmarkTCPOneShot-6               90938 ns/op    30607 ns/op    -66.34%
BenchmarkTCPOneShot-8               90374 ns/op    29150 ns/op    -67.75%
BenchmarkTCPOneShot-16             101089 ns/op   111526 ns/op     10.32%

BenchmarkTCPOneShotTimeout         174986 ns/op   178606 ns/op      2.07%
BenchmarkTCPOneShotTimeout-2       101585 ns/op   110678 ns/op      8.95%
BenchmarkTCPOneShotTimeout-4        91547 ns/op    35931 ns/op    -60.75%
BenchmarkTCPOneShotTimeout-6        91496 ns/op    31019 ns/op    -66.10%
BenchmarkTCPOneShotTimeout-8        90670 ns/op    29531 ns/op    -67.43%
BenchmarkTCPOneShotTimeout-16      101013 ns/op   106026 ns/op      4.96%

BenchmarkTCPPersistent              51731 ns/op    53324 ns/op      3.08%
BenchmarkTCPPersistent-2            32888 ns/op    30678 ns/op     -6.72%
BenchmarkTCPPersistent-4            25751 ns/op    15595 ns/op    -39.44%
BenchmarkTCPPersistent-6            26737 ns/op     9805 ns/op    -63.33%
BenchmarkTCPPersistent-8            26850 ns/op     9730 ns/op    -63.76%
BenchmarkTCPPersistent-16          104449 ns/op   102838 ns/op     -1.54%

BenchmarkTCPPersistentTimeout       51806 ns/op    53281 ns/op      2.85%
BenchmarkTCPPersistentTimeout-2     32956 ns/op    30895 ns/op     -6.25%
BenchmarkTCPPersistentTimeout-4     25994 ns/op    18111 ns/op    -30.33%
BenchmarkTCPPersistentTimeout-6     26679 ns/op     9846 ns/op    -63.09%
BenchmarkTCPPersistentTimeout-8     26810 ns/op     9727 ns/op    -63.72%
BenchmarkTCPPersistentTimeout-16   101652 ns/op   104410 ns/op      2.71%

R=rsc, dvyukov, dave, mikioh.mikioh, bradfitz, remyoudompheng
CC=golang-dev
https://golang.org/cl/6496054
2012-09-26 15:32:59 -04:00
Rémy Oudompheng
6feb61325a cmd/6g, cmd/8g: fix two "out of fixed registers" cases.
In two cases, registers were allocated too early resulting
in exhausting of available registers when nesting these
operations.

The case of method calls was due to missing cases in igen,
which only makes calls but doesn't allocate a register for
the result.

The case of 8-bit multiplication was due to a wrong order
in register allocation when Ullman numbers were bigger on the
RHS.

Fixes #3907.
Fixes #4156.

R=rsc
CC=golang-dev, remy
https://golang.org/cl/6560054
2012-09-26 21:17:11 +02:00
Daniel Morsing
7936ab58f7 cmd/gc: Don't calculate second value in range if it is blank.
Low hanging fruit optimization. Will remove an expensive copy if the range variable is an array.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6564052
2012-09-26 21:10:29 +02:00
David du Colombier
cca48f1a57 crypto/x509: add Plan 9 root certificate location
R=golang-dev
CC=golang-dev, rsc
https://golang.org/cl/6571056
2012-09-26 14:47:47 -04:00
Shenghou Ma
948db4e091 crypto/aes: speed up using AES-NI on amd64
This CL requires CL 5970055.

benchmark           old ns/op    new ns/op    delta
BenchmarkEncrypt          161           23  -85.71%
BenchmarkDecrypt          158           24  -84.24%
BenchmarkExpand           526           62  -88.21%

benchmark            old MB/s     new MB/s  speedup
BenchmarkEncrypt        99.32       696.19    7.01x
BenchmarkDecrypt       100.93       641.56    6.36x

R=golang-dev, bradfitz, dave, rsc
CC=golang-dev
https://golang.org/cl/6549055
2012-09-27 01:54:10 +08:00
Shenghou Ma
e039c405c8 cmd/6a, cmd/6l: add support for AES-NI instrutions and PSHUFD
This CL adds support for the these 7 new instructions to 6a/6l in
preparation of the upcoming CL for AES-NI accelerated crypto/aes:
AESENC, AESENCLAST, AESDEC, AESDECLAST, AESIMC, AESKEYGENASSIST,
and PSHUFD.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5970055
2012-09-27 01:53:08 +08:00
Shenghou Ma
5490814c30 cmd/go, cmd/ld: fix libgcc order and add __image_base__ symbol for windows
Fixes #4063.

R=alex.brainman, rsc
CC=golang-dev
https://golang.org/cl/6543066
2012-09-26 22:34:25 +08:00
Joel Sing
e80fccb441 cmd/go: assume that code in $GOROOT is up to date
Do not check compiler/linker timestamps for packages that are in the
$GOROOT. Avoids trying to rebuild non-writable standard packages when
timestamps have not been retained on the Go binaries.

Fixes #4106.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6533053
2012-09-27 00:00:50 +10:00
Rob Pike
ded94b7222 reflect.DeepEqual: rewrite clarification about nil and empty slice.
The previous version was created by an idiot. This time, Rog Peppe
wrote the text. Thanks, Rog.
(== doesn't work on slices in general, so it makes no sense to
talk about in the context of DeepEqual.)

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6566054
2012-09-26 20:46:49 +10:00
Mikio Hara
d6665bc338 net: fix plan 9 build
R=golang-dev, lucio.dere, fshahriar
CC=golang-dev
https://golang.org/cl/6562046
2012-09-26 16:11:49 +09:00
Rob Pike
74a7cc9bf2 reflect.DeepEqual: document that empty and nil are unequal for slices
Update #4133.
Added a sentence of documentation to call out the behavior.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6572051
2012-09-26 15:21:07 +10:00
Robert Griesemer
1785bfca6b exp/types/staging: updated gcimporter
Mostly minor changes to match the new
definitions in types.go and const.go.

R=rsc, r
CC=golang-dev
https://golang.org/cl/6506101
2012-09-25 17:39:02 -07:00
Robert Griesemer
ebf56e086d exp/types/staging: support for typechecking (most) builtins
This code relies on some functions that are not yet in staging,
but it get's harder to keep all this in sync in a piece-meal
fashion.

R=rsc
CC=golang-dev
https://golang.org/cl/6492124
2012-09-25 17:38:43 -07:00
Robert Griesemer
f5483fb801 exp/types/staging: operands, constants, and error handling
More pieces of the typechecker code:

- Operands are temporary objects representing an expressions's
type and value (for constants). An operand is the equivalent of
an "attribute" in attribute grammars except that it's not stored
but only passed around during type checking.

- Constant operations are implemented in const.go. Constants are
represented as bool (booleans), int64 and *big.Int (integers),
*big.Rat (floats), complex (complex numbers), and string (strings).

- Error reporting is consolidated in errors.go. Only the first
dozen of lines is new code, the rest of the file contains the
exprString and typeString functions formerly in two separate
files (which have been removed).

This is a replacement CL for 6492101 (which was created without
proper use of hg).

R=rsc, r
CC=golang-dev
https://golang.org/cl/6500114
2012-09-25 17:38:22 -07:00
Christian Himpel
1b6d4b5c0a net/http: use tls host instead of proxy, when checking against a certificate
Fixes #4152.

R=bradfitz
CC=golang-dev
https://golang.org/cl/6570045
2012-09-25 09:22:13 -07:00
Alex Brainman
0e6f927108 syscall: do not use int to test network syscall results (on windows)
Fixes #4147.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6569050
2012-09-25 17:06:39 +10:00
Shenghou Ma
f2fadfefaf cmd/5c: fix dataflag annotation
file        old_size     new_size    base@c1ce95068533
bin/go      14717392     6287824     5918236

this huge size difference is due to GC data for runtime.mheap
(NOPTR dataflag is not obeyed).

R=rsc, dave
CC=golang-dev
https://golang.org/cl/6547051
2012-09-25 14:42:44 +08:00
Russ Cox
5c4e2570c1 cmd/dist: new version for string for development branch
Remove VERSION, which was forcing version to 'devel'.

Old:
$ go version
go version devel

New:
$ go version
go version devel +0a3866d6cc6b Mon Sep 24 20:08:05 2012 -0400

The date and time (and time zone) is that of the most recent commit,
not the time of the build itself. With some effort we could normalize
the zone, but I don't think it's worth the effort (more C coding,
since Mercurial is unhelpful).

R=r, dsymonds
CC=golang-dev
https://golang.org/cl/6569049
2012-09-24 21:35:20 -04:00
Russ Cox
10ea6519e4 build: make int 64 bits on amd64
The assembly offsets were converted mechanically using
code.google.com/p/rsc/cmd/asmlint. The instruction
changes were done by hand.

Fixes #2188.

R=iant, r, bradfitz, remyoudompheng
CC=golang-dev
https://golang.org/cl/6550058
2012-09-24 20:57:01 -04:00
Jan Ziak
f8c58373e5 runtime: add types to MSpan
R=rsc
CC=golang-dev
https://golang.org/cl/6554060
2012-09-24 20:08:05 -04:00
Russ Cox
ba4625c66f reflect: add MakeFunc (API CHANGE)
Fixes #1765.

R=iant, r, daniel.morsing, minux.ma, bradfitz, rogpeppe, remyoudompheng
CC=golang-dev
https://golang.org/cl/6554067
2012-09-24 20:06:32 -04:00
Mikio Hara
4b9e8415de net: add read, write message methods to IPConn, UDPConn
Both methods allow to access the IP ancillary data through
socket control messages.

This CL is required for CL 6482044; go.net/ipv4: new package.

R=rsc, r, dave
CC=golang-dev
https://golang.org/cl/6426047
2012-09-25 06:57:32 +09:00
Rémy Oudompheng
33cceb09e2 cmd/{5g,6g,8g,6c}: remove unused macro, use %E to print etype.
R=golang-dev, rsc, dave
CC=golang-dev
https://golang.org/cl/6569044
2012-09-24 23:44:00 +02:00
Rémy Oudompheng
f4e76d5e02 cmd/6g, cmd/8g: add OINDREG, ODOT, ODOTPTR cases to igen.
Apart from reducing the number of LEAL/LEAQ instructions by about
30%, it gives 8g easier registerization in several cases,
for example in strconv. Performance with 6g is not affected.

Before (386):
src/pkg/strconv/decimal.go:22   TEXT  (*decimal).String+0(SB),$240-12
src/pkg/strconv/extfloat.go:540 TEXT  (*extFloat).ShortestDecimal+0(SB),$584-20

After (386):
src/pkg/strconv/decimal.go:22   TEXT  (*decimal).String+0(SB),$196-12
src/pkg/strconv/extfloat.go:540 TEXT  (*extFloat).ShortestDecimal+0(SB),$420-20

Benchmarks with GOARCH=386 (on a Core 2).

benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    7110191000   7079644000   -0.43%
BenchmarkFannkuch11      7769274000   7766514000   -0.04%
BenchmarkGobDecode         33454820     34755400   +3.89%
BenchmarkGobEncode         11675710     11007050   -5.73%
BenchmarkGzip            2013519000   1593855000  -20.84%
BenchmarkGunzip           253368200    242667600   -4.22%
BenchmarkJSONEncode       152443900    120763400  -20.78%
BenchmarkJSONDecode       304112800    247461800  -18.63%
BenchmarkMandelbrot200     29245520     29240490   -0.02%
BenchmarkParse              8484105      8088660   -4.66%
BenchmarkRevcomp         2695688000   2841263000   +5.40%
BenchmarkTemplate         363759800    277271200  -23.78%

benchmark                       old ns/op    new ns/op    delta
BenchmarkAtof64Decimal                127          129   +1.57%
BenchmarkAtof64Float                  166          164   -1.20%
BenchmarkAtof64FloatExp               308          300   -2.60%
BenchmarkAtof64Big                    584          571   -2.23%
BenchmarkAppendFloatDecimal           440          430   -2.27%
BenchmarkAppendFloat                  995          776  -22.01%
BenchmarkAppendFloatExp               897          746  -16.83%
BenchmarkAppendFloatNegExp            900          752  -16.44%
BenchmarkAppendFloatBig              1528         1228  -19.63%
BenchmarkAppendFloat32Integer         443          453   +2.26%
BenchmarkAppendFloat32ExactFraction   812          661  -18.60%
BenchmarkAppendFloat32Point          1002          773  -22.85%
BenchmarkAppendFloat32Exp             858          725  -15.50%
BenchmarkAppendFloat32NegExp          848          728  -14.15%
BenchmarkAppendFloat64Fixed1          447          431   -3.58%
BenchmarkAppendFloat64Fixed2          480          462   -3.75%
BenchmarkAppendFloat64Fixed3          461          457   -0.87%
BenchmarkAppendFloat64Fixed4          509          484   -4.91%

Update #1914.

R=rsc, nigeltao
CC=golang-dev, remy
https://golang.org/cl/6494107
2012-09-24 23:07:44 +02:00
Adam Langley
65c7dc4ace crypto/tls: support session ticket resumption.
Session resumption saves a round trip and removes the need to perform
the public-key operations of a TLS handshake when both the client and
server support it (which is true of Firefox and Chrome, at least).

R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6555051
2012-09-24 16:52:43 -04:00
Francesc Campoy
b7cbfe6ace testing: document -test.bench flag
Fixes #4080.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/6553068
2012-09-24 13:05:47 -07:00
Russ Cox
54af752865 cmd/gc: fix escape analysis bug
Was not handling &x.y[0] and &x.y.z correctly where
y is an array or struct-valued field (not a pointer).

R=ken2
CC=golang-dev
https://golang.org/cl/6551059
2012-09-24 15:53:12 -04:00
Russ Cox
c7e0b8baa6 regexp/syntax: define accepted syntax
Update #3953.

R=bradfitz, campoy
CC=golang-dev
https://golang.org/cl/6543068
2012-09-24 15:33:53 -04:00
Rémy Oudompheng
14f3276c9d cmd/8g: don't create redundant temporaries in bgen.
Comparisons used to create temporaries for arguments
even if they were already variables or addressable.
Removing the extra ones reduces pressure on regopt.

benchmark                 old ns/op    new ns/op    delta
BenchmarkGobDecode         50787620     49908980   -1.73%
BenchmarkGobEncode         19870190     19473030   -2.00%
BenchmarkGzip            3214321000   3067929000   -4.55%
BenchmarkGunzip           496792800    465828600   -6.23%
BenchmarkJSONEncode       232524800    263864400  +13.48%
BenchmarkJSONDecode       622038400    506600600  -18.56%
BenchmarkMandelbrot200     23937310     45913060  +91.81%
BenchmarkParse             14364450     13997010   -2.56%
BenchmarkRevcomp         6919028000   6480009000   -6.35%
BenchmarkTemplate         594458800    539528200   -9.24%

benchmark                  old MB/s     new MB/s  speedup
BenchmarkGobDecode            15.11        15.38    1.02x
BenchmarkGobEncode            38.63        39.42    1.02x
BenchmarkGzip                  6.04         6.33    1.05x
BenchmarkGunzip               39.06        41.66    1.07x
BenchmarkJSONEncode            8.35         7.35    0.88x
BenchmarkJSONDecode            3.12         3.83    1.23x
BenchmarkParse                 4.03         4.14    1.03x
BenchmarkRevcomp              36.73        39.22    1.07x
BenchmarkTemplate              3.26         3.60    1.10x

R=mtj, daniel.morsing, rsc
CC=golang-dev
https://golang.org/cl/6547064
2012-09-24 21:29:24 +02:00
Eric Roshan-Eisner
74a1a8ae5f testing: add memory allocation stats to benchmark
R=rsc, nigeltao, dave, bradfitz, r, rogpeppe
CC=golang-dev
https://golang.org/cl/6497084
2012-09-24 15:03:16 -04:00
Russ Cox
650160e36a cmd/gc: prepare for 64-bit ints
This CL makes the compiler understand that the type of
the len or cap of a map, slice, or string is 'int', not 'int32'.
It does not change the meaning of int, but it should make
the eventual change of the meaning of int in 6g a bit smoother.

Update #2188.

R=ken, dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6542059
2012-09-24 14:59:44 -04:00
Russ Cox
0bf46d0cf3 cmd/ld: prepare for 64-bit ints
Use explicit IntSize constant instead of 4.

This CL does not change the meaning of int, but it should make
the eventual change of the meaning of int on amd64 a bit
smoother.

Update #2188.

R=ken, dave
CC=golang-dev
https://golang.org/cl/6554076
2012-09-24 14:59:09 -04:00
Russ Cox
5501a097a9 cmd/cgo: prepare for 64-bit ints
This CL makes the size of an int controlled by a variable
in cgo instead of hard-coding 4 (or 32 bits) in various places.

Update #2188.

R=iant, r, dave
CC=golang-dev
https://golang.org/cl/6548061
2012-09-24 14:58:57 -04:00
Russ Cox
0b08c9483f runtime: prepare for 64-bit ints
This CL makes the runtime understand that the type of
the len or cap of a map, slice, or string is 'int', not 'int32',
and it is also careful to distinguish between function arguments
and results of type 'int' vs type 'int32'.

In the runtime, the new typedefs 'intgo' and 'uintgo' refer
to Go int and uint. The C types int and uint continue to be
unavailable (cause intentional compile errors).

This CL does not change the meaning of int, but it should make
the eventual change of the meaning of int on amd64 a bit
smoother.

Update #2188.

R=iant, r, dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6551067
2012-09-24 14:58:34 -04:00
Rémy Oudompheng
5e3fb887a3 cmd/[568]g: explain the purpose of various Reg fields.
R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/6554062
2012-09-24 20:55:11 +02:00
Russ Cox
44336459c8 lib9/fmt: do not put a main symbol into lib9.a
Fixes #4143.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6541064
2012-09-24 12:57:05 -04:00
Russ Cox
031b389ac1 cmd/gc: fix comment for caninl
Was describing an old implementation.

R=ken2
CC=golang-dev
https://golang.org/cl/6553066
2012-09-24 12:30:32 -04:00
Akshat Kumar
e42788628a cmd/dist, pkg/runtime: Plan 9, 64-bit: Get PID from TLS; remove use of `_tos'.
Using offsets from Tos is cumbersome and we've had problems
in the past. Since it's only being used to grab the PID, we'll just
get that from the default TLS instead.

R=rsc, rminnich, npe
CC=golang-dev
https://golang.org/cl/6543049
2012-09-24 12:24:45 -04:00
Russ Cox
8696b08446 reflect: fix mistake in error message
Pointed out by James Chalfant after submit of CL 6500065.

TBR=golang-dev
CC=golang-dev
https://golang.org/cl/6543067
2012-09-24 11:47:27 -04:00
Russ Cox
2f06615588 encoding/asn1: prepare for 64-bit ints
The code was assuming that int = 32 bits. Don't.

Update #2188.

R=agl
CC=golang-dev
https://golang.org/cl/6543063
2012-09-24 10:30:37 -04:00
Nigel Tao
6efa648853 compress/flate: move the history buffer out of the decompressor struct.
I'm not exactly sure why there's a performance gain, but it seems like
an easy win. Maybe it's a cache line thing. Maybe it's that
unsafe.Sizeof(decompressor{}) drops to below unmappedzero, so that
checkref/checkoffset don't need to insert TESTB instructions. Maybe
it's less noise for the conservative garbage collector. Maybe it's
something else.

compress/flate benchmarks:
BenchmarkDecodeDigitsSpeed1e4          378628       349906   -7.59%
BenchmarkDecodeDigitsSpeed1e5         3481976      3204898   -7.96%
BenchmarkDecodeDigitsSpeed1e6        34419500     31750660   -7.75%
BenchmarkDecodeDigitsDefault1e4        362317       335562   -7.38%
BenchmarkDecodeDigitsDefault1e5       3290032      3107624   -5.54%
BenchmarkDecodeDigitsDefault1e6      30542540     28937480   -5.26%
BenchmarkDecodeDigitsCompress1e4       362803       335158   -7.62%
BenchmarkDecodeDigitsCompress1e5      3294512      3114526   -5.46%
BenchmarkDecodeDigitsCompress1e6     30514940     28927090   -5.20%
BenchmarkDecodeTwainSpeed1e4           412818       389521   -5.64%
BenchmarkDecodeTwainSpeed1e5          3475780      3288908   -5.38%
BenchmarkDecodeTwainSpeed1e6         33629640     31931420   -5.05%
BenchmarkDecodeTwainDefault1e4         369736       348850   -5.65%
BenchmarkDecodeTwainDefault1e5        2861050      2721383   -4.88%
BenchmarkDecodeTwainDefault1e6       27120120     25862050   -4.64%
BenchmarkDecodeTwainCompress1e4        372057       350822   -5.71%
BenchmarkDecodeTwainCompress1e5       2855109      2718664   -4.78%
BenchmarkDecodeTwainCompress1e6      26987010     26336030   -2.41%

image/png benchmarks:
BenchmarkDecodeGray               1841839      1802251   -2.15%
BenchmarkDecodeNRGBAGradient      7115318      6933280   -2.56%
BenchmarkDecodeNRGBAOpaque        6135892      6013284   -2.00%
BenchmarkDecodePaletted           1153313      1114302   -3.38%
BenchmarkDecodeRGB                5619404      5511190   -1.93%

R=rsc, r
CC=golang-dev
https://golang.org/cl/6533048
2012-09-24 17:58:08 +10:00
Marcel van Lohuizen
5e47b77990 exp/locale/collate/tools/colcmp: implementation of colcmp tool used for comparing
various implementation of collation.  The tool provides commands for soring,
regressing one implementation against another, and benchmarking.
Currently it includes collation implementations for the Go collator, ICU,
and one using Darwin's CoreFoundation framework.
To avoid building this tool in the default build, the colcmp tag has been
added to all files. This allows other tools/colcmp in this directory (e.g. it may make
sense to move maketables here) to be put in this directory as well.

R=r, rsc, mpvl
CC=golang-dev
https://golang.org/cl/6496118
2012-09-24 13:22:03 +09:00
Russ Cox
3d5ddffa30 syscall: prepare for 64-bit ints
This CL fixes code that incorrectly assumes that int is 32 bits wide.
Specifically, the socketpair system call expects a pointer to a pair
of int32s, not a pair of ints. Fix this inside the wrappers without
changing the APIs.

Update #2188.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6552063
2012-09-24 00:06:22 -04:00
Rob Pike
9050550c12 text/template: allow .Field access to parenthesized expressions
Change the grammar so that field access is a proper operator.
This introduces a new node, ChainNode, into the public (but
actually internal) API of text/template/parse. For
compatibility, we only use the new node type for the specific
construct, which was not parseable before. Therefore this
should be backward-compatible.

Before, .X.Y was a token in the lexer; this CL breaks it out
into .Y applied to .X. But for compatibility we mush them
back together before delivering. One day we might remove
that hack; it's the simple TODO in parse.go/operand.

This change also provides grammatical distinction between
        f
and
        (f)
which might permit function values later, but not now.

Fixes #3999.

R=golang-dev, dsymonds, gri, rsc, mikesamuel
CC=golang-dev
https://golang.org/cl/6494119
2012-09-24 13:23:15 +10:00
Russ Cox
edce634963 time: prepare for 64-bit ints
The code was trying to interpret a uint32 n as a signed quantity
and then store it in an int. For this, int(n) currently works, but when
int becomes 64 bits one must write int(int32(n)) instead, to get
the 32-bit sign extension.

Update #2188.

R=golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/6551068
2012-09-23 23:04:28 -04:00
Alex Brainman
5d50dbc55a net/http: use r.Body.Close to close connection during TestServeFileFromCWD
Fixes #3917.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6553061
2012-09-24 12:48:19 +10:00
Akshat Kumar
659d1df1bc pkg/go/ast: Avoid doing zero-length writes to the fd.
After each line, ast.Print would do a zero-length write,
which would hit the boundary condition on Plan 9 when
reading over pipes (since message boundaries are
preserved). This change makes sure we only do positive-
length writes.

R=rsc, rminnich, dave, r
CC=golang-dev
https://golang.org/cl/6558046
2012-09-24 08:30:28 +10:00
Rémy Oudompheng
36df358a30 cmd/6g: fix internal error with SSE registers.
Revision 63f7abcae015 introduced a bug caused by
code assuming registers started at X5, not X0.

Fixes #4138.

R=rsc
CC=golang-dev, remy
https://golang.org/cl/6558043
2012-09-23 18:22:03 +02:00
Shenghou Ma
ca5e9bfabc cmd/5g: fix build
R=rsc, r
CC=golang-dev
https://golang.org/cl/6552061
2012-09-23 15:05:44 +08:00
Russ Cox
05ac300830 cmd/gc: fix use of nil interface, slice
Fixes #3670.

R=ken2
CC=golang-dev
https://golang.org/cl/6542058
2012-09-22 20:42:11 -04:00
Russ Cox
658482d70f cmd/5g: fix register opt bug
The width was not being set on the address, which meant
that the optimizer could not find variables that overlapped
with it and mark them as having had their address taken.
This let to the compiler believing variables had been set
but never used and then optimizing away the set.

Fixes #4129.

R=ken2
CC=golang-dev
https://golang.org/cl/6552059
2012-09-22 10:01:35 -04:00
Russ Cox
46f379cc2c reflect: add Type.ConvertibleTo, Value.Convert (API CHANGE)
Fixes #4047.

R=iant, r
CC=golang-dev
https://golang.org/cl/6500065
2012-09-22 08:52:27 -04:00
Joel Sing
49aa74ef7f cmd/cgo: use debug data for enums on windows
Use the debug data for enums on windows.

Fixes #4120.

R=alex.brainman
CC=golang-dev
https://golang.org/cl/6545047
2012-09-22 17:57:54 +10:00
Joel Sing
5373e8a8d7 debug/pe: add symbol support
Add support for processing the COFF symbol table.

R=alex.brainman
CC=golang-dev
https://golang.org/cl/6551045
2012-09-22 17:56:49 +10:00
Russ Cox
c29f4e00a1 cmd/gc: fix a spurious -u compile error
Fixes #4082.

R=dsymonds
CC=golang-dev
https://golang.org/cl/6545055
2012-09-21 21:12:41 -04:00
Rob Pike
f934bb8eba cgo: set alignment to 1 for unions and classes; avoids crash from divide-by-zero
Fixes #4114.

R=golang-dev, iant, rsc, iant, devon.odell
CC=golang-dev
https://golang.org/cl/6553050
2012-09-22 07:25:41 +10:00
Rémy Oudompheng
413fbed341 cmd/6g: cosmetic improvements to regopt debugging.
R=rsc, golang-dev
CC=golang-dev
https://golang.org/cl/6528044
2012-09-21 20:20:26 +02:00
Russ Cox
57ad05db15 cmd/6g: use all 16 float registers, optimize float moves
Fixes #2446.

R=ken2
CC=golang-dev
https://golang.org/cl/6557044
2012-09-21 13:39:09 -04:00
Jan Ziak
b16c41bed7 runtime: fix typos in comments
R=rsc
CC=golang-dev
https://golang.org/cl/6554043
2012-09-21 12:25:55 -04:00
Shenghou Ma
b151af1f36 runtime: fix mmap comments
We only pass lower 32 bits of file offset to asm routine.

R=r, dave, rsc
CC=golang-dev
https://golang.org/cl/6499118
2012-09-21 13:50:02 +08:00
Russ Cox
8572950383 all: match asm variable names to Go func declarations
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6548046
2012-09-21 00:35:56 -04:00
Russ Cox
4591cd631d unicode: performance improvements (API change)
*** There is an API change here: the introduction of the
LatinOffset int in the RangeTable struct. ***

* Avoid checking Latin range multiple times for non-Latin runes.
* Use linear search when it is faster than binary search.

go test -calibrate runs the calibration for where the linear/binary
crossover should be.

benchmark                       old MB/s     new MB/s  speedup
BenchmarkFields            36.27        41.43    1.14x
BenchmarkFieldsFunc        36.23        41.38    1.14x

The speedup here is evenly split between the linear scans
and the LatinOffset change. Both are about 1.07x.

R=r
CC=bradfitz, gobot, golang-dev
https://golang.org/cl/6526048
2012-09-21 00:35:25 -04:00
Joel Sing
31758b2c1a cmd/{ld,5l,6l,8l}: add support for OpenBSD ELF signatures
OpenBSD now requires ELF binaries to have a PT_NOTE that identifies
it as an OpenBSD binary. Refactor the existing NetBSD ELF signature
code and implement support for OpenBSD ELF signatures.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6489131
2012-09-21 12:51:39 +10:00
Mikio Hara
9773ac1d08 net: fix comment
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6546044
2012-09-21 07:13:36 +09:00
Dmitriy Vyukov
801f6e6367 sync: add Once test with panic
Tests behavior of Once when initialization function panics.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6554047
2012-09-20 23:29:29 +04:00
Lucio De Re
091388d8e9 cmd/ld: remove unused assignment
The calculation of datsize is redundant.

R=golang-dev, seed, rsc
CC=golang-dev
https://golang.org/cl/6503122
2012-09-20 14:58:33 -04:00
Dmitriy Vyukov
d151fb9e20 runtime: reset parfor stats
Otherwise they sum up between GCs.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6535048
2012-09-20 22:46:24 +04:00
Andrew Harding
c993ac11bc crypto/x509: Use ExtKeyUsage and UnknownExtKeyUsage fields from template in CreateCertificate
R=golang-dev, agl
CC=golang-dev
https://golang.org/cl/6535057
2012-09-20 12:36:37 -04:00
Adam Langley
be11889ab1 crypto/x509: ignore non-critical email constraints
Previously we tried to parse email constraints as the maximum base
distance (which is unused and must be omitted according to RFC 5280)
because they share the same tag number. Rather than complicate the
code further, this CL just ignores the unused values.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6552044
2012-09-20 12:30:56 -04:00
Joel Sing
9536480edc cgo: process DWARF info even when debug data is used for value
Always process the DWARF info, even when the const value is determined
using the debug data block. This ensures that the injected enum is
removed and future loads of the same constant do not trigger
inconsistent definitions.

Add tests for issues 2470 and 4054.
Fixes #4054.

R=golang-dev, fullung, dave, rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6501101
2012-09-20 13:20:33 +10:00
David Symonds
5a93fea08e vet: fix rangeloop.
In a range loop, the presence of a value implies the presence of a key.
However, the presence of a value as an *ast.Ident does not imply that
the key is also an *ast.Ident, thus leading to a panic any time the
two argument form is used where the key is not an identifier.

R=golang-dev, adg, r
CC=golang-dev
https://golang.org/cl/6540045
2012-09-20 08:12:47 +10:00
Robert Griesemer
83601807af gofmt: added testcase for files containing \r\n line endings
(see also issue 3961).

hexdump -c testdata/crlf.input
0000000   /   *  \r  \n  \t   S   o   u   r   c   e       c   o   n   t
0000010   a   i   n   i   n   g       C   R   /   L   F       l   i   n
0000020   e       e   n   d   i   n   g   s   .  \r  \n  \t   T   h   e
0000030       g   o   f   m   t   '   e   d       o   u   t   p   u   t
0000040       m   u   s   t       o   n   l   y       h   a   v   e
0000050   L   F  \r  \n  \t   l   i   n   e       e   n   d   i   n   g
0000060   s   .  \r  \n   *   /  \r  \n   p   a   c   k   a   g   e
0000070   m   a   i   n  \r  \n  \r  \n   f   u   n   c       m   a   i
0000080   n   (   )       {  \r  \n  \t   /   /       l   i   n   e
0000090   c   o   m   m   e   n   t  \r  \n  \t   p   r   i   n   t   l
00000a0   n   (   "   h   e   l   l   o   ,       w   o   r   l   d   !
00000b0   "   )       /   /       a   n   o   t   h   e   r       l   i
00000c0   n   e       c   o   m   m   e   n   t  \r  \n  \t   p   r   i
00000d0   n   t   l   n   (   )  \r  \n   }  \r  \n
00000db

hexdump -c testdata/crlf.golden
0000000   /   *  \n  \t   S   o   u   r   c   e       c   o   n   t   a
0000010   i   n   i   n   g       C   R   /   L   F       l   i   n   e
0000020       e   n   d   i   n   g   s   .  \n  \t   T   h   e       g
0000030   o   f   m   t   '   e   d       o   u   t   p   u   t       m
0000040   u   s   t       o   n   l   y       h   a   v   e       L   F
0000050  \n  \t   l   i   n   e       e   n   d   i   n   g   s   .  \n
0000060   *   /  \n   p   a   c   k   a   g   e       m   a   i   n  \n
0000070  \n   f   u   n   c       m   a   i   n   (   )       {  \n  \t
0000080   /   /       l   i   n   e       c   o   m   m   e   n   t  \n
0000090  \t   p   r   i   n   t   l   n   (   "   h   e   l   l   o   ,
00000a0       w   o   r   l   d   !   "   )       /   /       a   n   o
00000b0   t   h   e   r       l   i   n   e       c   o   m   m   e   n
00000c0   t  \n  \t   p   r   i   n   t   l   n   (   )  \n   }  \n
00000cf

R=rsc
CC=golang-dev
https://golang.org/cl/6526052
2012-09-19 14:14:21 -07:00
Robert Griesemer
93195e1f31 encoding/gob: fix comment
Fixes #4100.

R=adg, r, dave
CC=golang-dev
https://golang.org/cl/6535055
2012-09-19 10:11:24 -07:00
Shenghou Ma
2e7aaeddc4 src/all.bat: fix banner
we need to restore %PATH% before calling "dist banner", so that
it could suggest the user to add %GOROOT%/bin to %PATH% if necessary.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6525049
2012-09-20 00:58:34 +08:00
Shenghou Ma
674bbafce6 misc/cgo/stdio: make it work on Windows and also test it
use a function to get stdout and stderr, instead of depending
on a specific libc implementation.
also make test/run.go replace \r\n by \n before comparing
output.

        Fixes #2121.
        Part of issue 1741.

R=alex.brainman, rsc, r, remyoudompheng
CC=golang-dev
https://golang.org/cl/5847068
2012-09-20 00:27:23 +08:00
Shenghou Ma
4d7c81bc67 cmd/ld: consistent binary for cgo programs
We use pkg path instead of file name (which contains $WORK) in section symbols names.

R=golang-dev, fullung, rsc, iant
CC=golang-dev
https://golang.org/cl/6445085
2012-09-20 00:18:41 +08:00
Alex Brainman
28cb9fd509 os: use small writes during console io
Fixes #3767

R=golang-dev, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6523043
2012-09-19 16:55:21 +10:00
Alex Brainman
8627e5c0a1 misc/cgo/test and test/bench/go1: enable these tests on windows
R=golang-dev, r, bradfitz
CC=golang-dev
https://golang.org/cl/6488127
2012-09-19 12:07:25 +10:00
Mikio Hara
1ad5f87635 cmd/api: fix signatures like func(x, y, z int)
Fixes writing of function parameter, result lists which
consist of multiple named or unnamed items with same type.

Fixes #4011.

R=golang-dev, bsiegert, bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6475062
2012-09-19 07:04:12 +09:00
Andrew Gerrand
51e85612f9 vet: add range variable misuse detection
R=fullung, r, remyoudompheng, minux.ma, gri, rsc
CC=golang-dev
https://golang.org/cl/6494075
2012-09-18 14:19:31 -07:00
Andrew Gerrand
7e525928d3 go/doc: synthesize "package main" for examples
R=gri
CC=golang-dev
https://golang.org/cl/6525046
2012-09-18 14:13:34 -07:00
Dmitriy Vyukov
cc8cfefd8a race: linker changes
This is the second part of a bigger change that adds data race detection feature:
https://golang.org/cl/6456044
This change makes the linker emit dependency on runtime/race package when supplied with -b flag.

R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6488074
2012-09-19 01:05:25 +04:00
Russ Cox
a29f3136b4 cmd/api: allow extension of interfaces with unexported methods
Fixes #4061.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6525047
2012-09-18 15:57:03 -04:00
Dmitriy Vyukov
8ed026e783 race: build system changes
This is the first part of a bigger change that adds data race detection feature:
https://golang.org/cl/6456044
Adds -race flag to go command.
API change:
+pkg go/build, type Context struct, InstallTag string

R=rsc
CC=golang-dev
https://golang.org/cl/6488075
2012-09-18 23:47:15 +04:00
Dmitriy Vyukov
99b6e9f73b race: cmd/cgo changes
This is a part of a bigger change that adds data race detection feature:
https://golang.org/cl/6456044
This change breaks circular dependency between runtime/race and syscall packages.

R=rsc
CC=golang-dev
https://golang.org/cl/6498079
2012-09-18 23:42:18 +04:00
Russ Cox
0e60019a42 bytes, strings: add Fields benchmarks
The performance changes will be a few different CLs.
Start with benchmarks as a baseline.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6537043
2012-09-18 15:02:08 -04:00
Jan Ziak
35724c1aa5 runtime: hide the semaphore table from garbage collector
R=rsc, dvyukov, dave
CC=golang-dev
https://golang.org/cl/6528043
2012-09-18 14:30:01 -04:00
Jan Ziak
384af66984 reflect: use []unsafe.Pointer instead of []*int
R=rsc
CC=golang-dev
https://golang.org/cl/6527043
2012-09-18 14:23:11 -04:00
Russ Cox
ccf2b8843e encoding/json: do not read beyond array literal
Fixes #3942.

R=golang-dev, mike.rosset, r
CC=golang-dev
https://golang.org/cl/6524043
2012-09-18 14:22:55 -04:00
Russ Cox
370ae05545 reflect: add Select
R=r, iant, rogpeppe, bradfitz
CC=golang-dev
https://golang.org/cl/6498078
2012-09-18 14:22:41 -04:00
Anthony Eufemio
e8de8b58ca builtin: Changed documentation for rune type.
Fixes #4093.

R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/6536047
2012-09-18 11:01:10 -07:00
Dmitriy Vyukov
f20fd87384 runtime: refactor goroutine blocking
The change is a preparation for the new scheduler.
It introduces runtime.park() function,
that will atomically unlock the mutex and park the goroutine.
It will allow to remove the racy readyonstop flag
that is difficult to implement w/o the global scheduler mutex.

R=rsc, remyoudompheng, dave
CC=golang-dev
https://golang.org/cl/6501077
2012-09-18 21:15:46 +04:00
Mikio Hara
e4389c008a undo CL 6395055 / 2518eee18c4f
Broke TCP selfConnect

««« original CL description
net: avoid nil pointer dereference when RemoteAddr.String method chain is called

Fixes #3721.

R=dave, rsc
CC=golang-dev
https://golang.org/cl/6395055
»»»

R=rsc
CC=golang-dev
https://golang.org/cl/6533043
2012-09-19 01:33:03 +09:00
Daniel Morsing
804a43ca76 cmd/gc: fix double evaluation in interface comparison
During interface compare, the operands will be evaluated twice. The operands might include function calls for conversion, so make them cheap before comparing them.

R=rsc
CC=golang-dev
https://golang.org/cl/6498133
2012-09-18 17:40:53 +02:00
Nigel Tao
648c9eb0b5 image/jpeg: ignore an incorrect but harmless trailing restart marker.
Fixes #4084.

R=r
CC=golang-dev
https://golang.org/cl/6526043
2012-09-18 21:57:33 +10:00
Alex Brainman
6e4d24999f syscall: attempt to find error message in "local" language before resorting to error number on windows
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6499121
2012-09-18 13:02:37 +10:00
Dave Cheney
55ca5ab0be runtime: arm: abort if VFPv3 support missing
Fixes #3456.

This proposal is a reformulation of CL 5987063. This CL resets
the default GOARM value to 6 and allows the use of the VFPv3
optimisation if GOARM=7. Binaries built with this CL in place
will abort if GOARM=7 was used and the target host does not
support VFPv3.

R=minux.ma, rsc, ajstarks
CC=golang-dev
https://golang.org/cl/6501099
2012-09-18 09:55:07 +10:00
Lucio De Re
b29ed23ab5 build: fix various 'set and not used' for Plan 9
R=dave, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6501134
2012-09-17 17:25:26 -04:00
Jan Ziak
54193689cc cmd/ld: fix compilation when GOARCH != GOHOSTARCH
R=rsc, dave, minux.ma
CC=golang-dev
https://golang.org/cl/6493123
2012-09-17 17:18:21 -04:00
Charles L. Dorian
0f8f5d2140 math: Faster Tanh
From 159 to 47.6 ns/op; slightly more accurate.

R=rsc, golang-dev, mtj, dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6500121
2012-09-17 17:18:16 -04:00
Francisco Souza
916ccbf165 cmd/go: reject relative values for GOPATH
Fixes #4062.

R=rsc, dave, r
CC=golang-dev, nicksaika
https://golang.org/cl/6488129
2012-09-17 13:44:55 -07:00
Daniel Morsing
551e263823 cmd/gc: add missing conversion from bool to interface in switches.
In switches without an expression, the compiler would not convert the implicit true to an interface, causing codegen errors.

Fixes #3980.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6497147
2012-09-17 21:29:10 +02:00
Sanjay Menakuru
da1ce83732 unicode/utf8: add Examples
R=golang-dev, r
CC=adg, golang-dev
https://golang.org/cl/6493124
2012-09-17 11:06:42 -07:00
Eric Eisner
0aad3cdc59 strings: implement a faster generic Replacer
This also fixes the semantics of some corner cases with the empty
match. TODOs for genericReplacer in the tests are fixed.

benchmark                  old ns/op    new ns/op    delta
BenchmarkGenericNoMatch        71395         3132  -95.61%
BenchmarkGenericMatch1         75610        20280  -73.18%
BenchmarkGenericMatch2        837995        86725  -89.65%

R=nigeltao, rsc
CC=golang-dev
https://golang.org/cl/6492076
2012-09-17 11:50:15 +10:00
Shenghou Ma
a1a414e6f1 run.bash: fix a typo (fix build)
R=golang-dev
CC=golang-dev
https://golang.org/cl/6506121
2012-09-17 01:26:57 +08:00
Shenghou Ma
329b27a566 run.bash: set appropriate ulimits
mainly for NetBSD/OpenBSD.

R=bradfitz, r, rsc
CC=golang-dev
https://golang.org/cl/6453154
2012-09-17 01:11:28 +08:00
Shenghou Ma
ecb2a0a9e5 runtime: fix SI_USER for FreeBSD
Ref: http://svnweb.freebsd.org/base/head/sys/sys/signal.h?revision=HEAD&view=markup

R=golang-dev, devon.odell, r
CC=golang-dev
https://golang.org/cl/6490118
2012-09-17 01:08:41 +08:00
Rob Pike
7b7a7a5737 text/template: towards better errors
Give the right name for errors, and add a test to check we're
getting the errors we expect.
Also fix an ordering bug (calling add after stopParse) that
caused a nil indirection rather than a helpful error.
Fixes #3280.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6520043
2012-09-14 15:25:37 -07:00
Brad Fitzpatrick
5c5c2c8112 os/exec: don't crash when out of fds
Command.Start could crash before if no fds were available
because a nil *os.File of /dev/null was added to the cleanup
list, which crashed before returning the proper error.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6514043
2012-09-14 13:40:22 -07:00
Russ Cox
ab224094d0 go/build: use custom file readers to avoid I/O
When reading Go files, read through import block.
When reading non-Go files, read only leading comments.

R=nigeltao, adg, r
CC=golang-dev
https://golang.org/cl/6493068
2012-09-14 12:22:45 -04:00
Russ Cox
ae42beafd3 cmd/go: fix build
TBR=r

TBR=r
CC=golang-dev
https://golang.org/cl/6496124
2012-09-14 12:21:57 -04:00
Russ Cox
ca75fdf972 cmd/go: treat all commands in exp/ as tools
Nothing in exp should get installed directly in bin,
at least not by default.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6497138
2012-09-14 12:06:21 -04:00
Marcel van Lohuizen
a4d08ed5df exp/locale/collate: changed API to allow access to different locales through New(),
instead of variables. Several reasons:
- Encourage users of the API to minimize the number of creations and reuse Collate objects.
- Don't rule out the possibility of using initialization code for collators. For some locales
  it will be possible to have very compact representations that can be quickly expanded
  into a proper table on demand.
Other changes:
- Change name of root* vars to main*, as the tables are shared between locales.
- Added Locales() method to get a list of supported locales.

R=r
CC=golang-dev
https://golang.org/cl/6498107
2012-09-14 19:10:02 +09:00
Rob Pike
f269f9a3c7 cmd/yacc: allow utf-8 token values
Also clean up the code and allow \U.
Fixes #3007.

R=golang-dev, rsc, 0xjnml
CC=golang-dev
https://golang.org/cl/6492105
2012-09-13 13:59:00 -07:00
Jan Ziak
032e5bfb30 ld: add .gcdata and .gcbss sections
R=rsc
CC=golang-dev
https://golang.org/cl/6281048
2012-09-13 15:59:34 -04:00
Brad Fitzpatrick
9a82324fb7 build: print go banner before restoring windows PATH
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6492117
2012-09-13 12:39:25 -07:00
Daniel Morsing
d06dcd4595 cmd/gc: Specify which package import caused an redeclaration error.
Fixes #4012.

R=dave, remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6490082
2012-09-13 18:40:50 +02:00
Adam Langley
ecc04b8927 crypto/tls: allow certificates and key to be in either order.
X509KeyPair wasn't really supposed to allow the certificate and
key to be in the same file, but it did work if you put the key
first. Since some HTTPS servers support loading keys and certs
like this, this change makes it work in either order.

Fixes #3986.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6499103
2012-09-13 11:00:16 -04:00
Russ Cox
37721cc1ce html/template: fix URL doc
This is the easy part of issue 3528.
(What to do about "noescape" is the hard part, left open.)

Update #3528.

R=mikesamuel, r, dsymonds
CC=golang-dev
https://golang.org/cl/6493113
2012-09-13 10:53:00 -04:00
Russ Cox
ef87c0edae crypto/rsa: reject PublicKey.E if it won't fit in a 32-bit int
Right now we only have 32-bit ints so that's a no-op.
Took the opportunity to check for some other invalid values too.
Suggestions for additions or modifications welcome.

R=agl
CC=golang-dev
https://golang.org/cl/6493112
2012-09-13 10:47:01 -04:00
Russ Cox
6ee91ced92 cmd/pack: rename __.SYMDEF to __.GOSYMDEF
This fixes a problem with ELF tools thinking they know the
format of the symbol table, as we do not use any of the
standard formats for that table.

This change will probably annoy the Plan 9 users, but I
believe there are other incompatibilities already that mean
they have to use a Go-specific nm.

Fixes #3473.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6500117
2012-09-13 10:26:21 -04:00
Francisco Souza
ec9967ff11 go/build: reject empty strings in Import
Fixes #3889.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/6499102
2012-09-13 10:25:35 -04:00
Nigel Tao
237ee39269 image/png: optimize encoding image.Gray and image.NRGBA images.
benchmark                    old ns/op    new ns/op    delta
BenchmarkEncodeGray           23616080      5624558  -76.18%
BenchmarkEncodeNRGBOpaque     34181260     17144380  -49.84%
BenchmarkEncodeNRGBA          41235820     20345990  -50.66%
BenchmarkEncodePaletted        5594652      5620362   +0.46%
BenchmarkEncodeRGBOpaque      17242210     17168820   -0.43%
BenchmarkEncodeRGBA           66515720     67243560   +1.09%

R=r
CC=golang-dev
https://golang.org/cl/6490099
2012-09-13 15:47:12 +10:00
Russ Cox
66331532cd net/rpc/jsonrpc: fix test error message
Fixes #4041.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6495121
2012-09-12 17:37:39 -04:00
Jan Ziak
d09afc2efb gc: generate garbage collection info for types
R=rsc, nigeltao, minux.ma
CC=golang-dev
https://golang.org/cl/6290043
2012-09-12 12:08:27 -04:00
Russ Cox
792518c656 cmd/dist: emit \r in env -w output
go tool dist env -w is supposed to print a Windows batch file.
Normally Windows will execute batch files without \r before \n,
but issue 3060 reports that if the file ends up containing paths
written in Chinese, Windows 7 cannot execute it without the \r.
So add the \r.

Fixes #3060.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6498120
2012-09-12 12:05:34 -04:00
Andreas Jellinghaus
452d6b46a3 syscall: add linux specific Getsockopt for Ucred struct
SO_PEERCRED on unix domain socket will fill a Ucred struct,
thus linux needs a custom Getsockopt variant.
Fixes #3836.

R=golang-dev, rsc, iant
CC=golang-dev
https://golang.org/cl/6445104
2012-09-12 06:38:21 -07:00
Nigel Tao
a9a675ec35 cmd/6g, cmd/8g: clean up unnecessary switch code in componentgen.
Code higher up in the function already catches these cases.

R=remyoudompheng, rsc
CC=golang-dev
https://golang.org/cl/6496106
2012-09-12 21:47:05 +10:00
Alex Brainman
18601f88fd os: detect and handle console in File.Write on windows
Fixes #3376.

R=golang-dev, bsiegert, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6488044
2012-09-12 12:04:45 +10:00
Nigel Tao
6910356ea8 strings: fix NewReplacer(old0, new0, old1, new1, ...) to be consistent
when oldi == oldj.

Benchmark numbers show no substantial change.

R=eric.d.eisner, rogpeppe
CC=golang-dev
https://golang.org/cl/6496104
2012-09-12 10:40:39 +10:00
Nigel Tao
e39072d65f sync/atomic: add package doc for AddT, LoadT and StoreT.
Rename the first argument of CompareAndSwapT and AddT s/val/addr/
for consistency with LoadT and StoreT.

R=rsc, r, dvyukov
CC=golang-dev
https://golang.org/cl/6494112
2012-09-12 10:36:22 +10:00
Daniel Morsing
8fd65b0e1d cmd/gc: Inline pointer sized T2I interface conversions
This CL also adds support for marking the likelyness of IF nodes in the AST being true. This feature is being used here to mark the slow path as unlikely.

src/pkg/runtime:
benchmark                  old ns/op    new ns/op    delta
BenchmarkConvT2IUintptr           16            1  -91.63%

test/bench/go1:
benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    5416917000   5461355000   +0.82%
BenchmarkFannkuch11      3810355000   3842609000   +0.85%
BenchmarkGobDecode         19950950     19855420   -0.48%
BenchmarkGobEncode         11301220     11308530   +0.06%
BenchmarkGzip             548119600    546869200   -0.23%
BenchmarkGunzip           176145400    180208300   +2.31%
BenchmarkJSONEncode        93117400     70163100  -24.65%
BenchmarkJSONDecode       406626800    409999200   +0.83%
BenchmarkMandelbrot200      6300992      6317866   +0.27%
BenchmarkParse              7664396      7451625   -2.78%
BenchmarkRevcomp         1189424000   1412332000  +18.74%
BenchmarkTemplate         491308400    458654200   -6.65%

benchmark                  old MB/s     new MB/s  speedup
BenchmarkGobDecode            38.47        38.66    1.00x
BenchmarkGobEncode            67.92        67.87    1.00x
BenchmarkGzip                 35.40        35.48    1.00x
BenchmarkGunzip              110.16       107.68    0.98x
BenchmarkJSONEncode           20.84        27.66    1.33x
BenchmarkJSONDecode            4.77         4.73    0.99x
BenchmarkParse                 7.56         7.77    1.03x
BenchmarkRevcomp             213.69       179.96    0.84x
BenchmarkTemplate              3.95         4.23    1.07x

R=rsc, dave, nigeltao
CC=golang-dev
https://golang.org/cl/6351090
2012-09-11 21:42:30 +02:00
Nigel Tao
0184081eb9 cmd/gc: recognize small TPTR64 values as small integer constants.
Given the following Go program:

func sum(s []int) int {
        ret := 0
        for _, x := range s {
                ret += x
        }
        return ret
}

6g would previously generate:

--- prog list "sum" ---
0000 (main.go:3) TEXT    sum+0(SB),$0-24
0001 (main.go:5) MOVQ    s+0(FP),CX
0002 (main.go:5) MOVL    s+8(FP),DI
0003 (main.go:5) MOVL    s+12(FP),BX
0004 (main.go:4) MOVL    $0,SI
0005 (main.go:5) MOVL    $0,AX
0006 (main.go:5) JMP     ,8
0007 (main.go:5) INCL    ,AX
0008 (main.go:5) CMPL    AX,DI
0009 (main.go:5) JGE     $0,16
0010 (main.go:5) MOVL    (CX),DX
0011 (main.go:5) MOVQ    $4,BX
0012 (main.go:5) ADDQ    CX,BX
0013 (main.go:5) MOVQ    BX,CX
0014 (main.go:6) ADDL    DX,SI
0015 (main.go:5) JMP     ,7
0016 (main.go:8) MOVL    SI,.noname+16(FP)
0017 (main.go:8) RET     ,

and now generates:

--- prog list "sum" ---
0000 (main.go:3) TEXT    sum+0(SB),$0-24
0001 (main.go:5) MOVQ    s+0(FP),CX
0002 (main.go:5) MOVL    s+8(FP),DI
0003 (main.go:5) MOVL    s+12(FP),BX
0004 (main.go:4) MOVL    $0,SI
0005 (main.go:5) MOVL    $0,AX
0006 (main.go:5) JMP     ,8
0007 (main.go:5) INCL    ,AX
0008 (main.go:5) CMPL    AX,DI
0009 (main.go:5) JGE     $0,14
0010 (main.go:5) MOVL    (CX),BP
0011 (main.go:5) ADDQ    $4,CX
0012 (main.go:6) ADDL    BP,SI
0013 (main.go:5) JMP     ,7
0014 (main.go:8) MOVL    SI,.noname+16(FP)
0015 (main.go:8) RET     ,

The key difference is that
0011 (main.go:5) MOVQ    $4,BX
0012 (main.go:5) ADDQ    CX,BX
0013 (main.go:5) MOVQ    BX,CX
has changed to
0011 (main.go:5) ADDQ    $4,CX

R=rsc, dave, remyoudompheng
CC=golang-dev
https://golang.org/cl/6506089
2012-09-11 19:45:28 +10:00
Rémy Oudompheng
b45b6fd1c7 cmd/6g, cmd/8g: do not LEA[LQ] interfaces when calling methods.
It is enough to load directly the data word and the itab word
from memory, so we save a LEA instruction for each method call,
and allow elimination of some extra temporaries.

Update #1914.

R=daniel.morsing, rsc
CC=golang-dev, remy
https://golang.org/cl/6501110
2012-09-11 08:45:23 +02:00
Rémy Oudompheng
ff642e290f cmd/6g, cmd/8g: eliminate extra agen for nil comparisons.
Removes an extra LEAL/LEAQ instructions there and usually saves
a useless temporary in the idiom
    if err := foo(); err != nil {...}

Generated code is also less involved:
    MOVQ err+n(SP), AX
    CMPQ AX, $0
(potentially CMPQ n(SP), $0) instead of
    LEAQ err+n(SP), AX
    CMPQ (AX), $0

Update #1914.

R=daniel.morsing, nigeltao, rsc
CC=golang-dev, remy
https://golang.org/cl/6493099
2012-09-11 08:08:40 +02:00
Nigel Tao
b19c32acce strings: more thorough Replacer tests.
This verifies existing behavior. Some replacements are arguably wrong
(these are marked with TODO) but changing behavior is left for a
follow-up CL.

Also fix that BenchmarkGenericMatch wasn't actually matching anything.

R=rsc, eric.d.eisner
CC=bradfitz, golang-dev
https://golang.org/cl/6488110
2012-09-11 14:40:08 +10:00
Alex Brainman
4c60f974b1 misc/cgo/life: disable it temporarily on windows, because go builder fails
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6506096
2012-09-11 14:06:34 +10:00
Russ Cox
f97bfb93f4 encoding/json: handle anonymous fields
Fixes #3069.

R=golang-dev, n13m3y3r
CC=golang-dev
https://golang.org/cl/6460044
2012-09-10 23:31:40 -04:00
Mikio Hara
d5a8c58170 net: delete unused IP-level socket option helpers
R=rsc, dave
CC=bradfitz, gobot, golang-dev
https://golang.org/cl/6497044
2012-09-11 08:56:28 +09:00
Mikio Hara
6c4645cffe net: rename files to clarify platform dependency
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6489056
2012-09-11 07:37:43 +09:00
Robert Griesemer
b29d641b3a exp/types/staging: typechecker API
First set of type checker files for review.
The primary concern here is the typechecker
API (types.go).

R=rsc, adonovan, r, rogpeppe
CC=golang-dev
https://golang.org/cl/6490089
2012-09-10 14:54:52 -07:00
Rob Pike
6ce4930365 gc: initial BOM is legal.
Fixes #4040.

R=rsc
CC=golang-dev
https://golang.org/cl/6497098
2012-09-10 13:03:07 -07:00
Adam Langley
2c5b53866c undo CL 6498092 / 4ff71bc1a199
Broke tests on 386.

««« original CL description
6l/8l: emit correct opcodes to F(SUB|DIV)R?D.

When the destination was not F0, 6l and 8l swapped FSUBD/FSUBRD and
FDIVD/FDIVRD.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6498092
»»»

R=golang-dev
CC=golang-dev
https://golang.org/cl/6492100
2012-09-10 15:52:36 -04:00
Adam Langley
72fa142fc5 6l/8l: emit correct opcodes to F(SUB|DIV)R?D.
When the destination was not F0, 6l and 8l swapped FSUBD/FSUBRD and
FDIVD/FDIVRD.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6498092
2012-09-10 15:35:39 -04:00
Brad Fitzpatrick
a7743d7ad2 net/http: add If-None-Match and If-Range support to ServeContent
Also, clear Content-Type and Content-Length on Not Modified
responses before server.go strips them and spams the logs with
warnings.

R=rsc
CC=golang-dev
https://golang.org/cl/6503090
2012-09-10 10:16:09 -07:00
Nigel Tao
5d7ece6f44 6g: delete unnecessary OXXX initialization.
No longer necessary after https://golang.org/cl/6497073/
removed the `if(n5.op != OXXX) { regfree(&n5); }`.

R=remy, r
CC=golang-dev, rsc
https://golang.org/cl/6498101
2012-09-10 11:24:34 +10:00
Adam Langley
122d2873a8 crypto/rand: typo fix from a69e30463bf4
R=golang-dev
CC=golang-dev
https://golang.org/cl/6497106
2012-09-09 20:11:58 -04:00
Adam Langley
b752ab2e90 crypto/rand: zero length reads shouldn't crash on Windows.
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6496099
2012-09-09 20:07:09 -04:00
Rémy Oudompheng
ae0862c1ec cmd/8g: import componentgen from 6g.
This makes the compilers code more similar and improves
code generation a lot.

The number of LEAL instructions generated for cmd/go drops
by 60%.

% GOARCH=386 go build -gcflags -S -a cmd/go | grep LEAL | wc -l
Before:       89774
After:        47548

benchmark                              old ns/op    new ns/op    delta
BenchmarkAppendFloatDecimal                  540          444  -17.78%
BenchmarkAppendFloat                        1160         1035  -10.78%
BenchmarkAppendFloatExp                     1060          922  -13.02%
BenchmarkAppendFloatNegExp                  1053          920  -12.63%
BenchmarkAppendFloatBig                     1773         1558  -12.13%
BenchmarkFormatInt                         13065        12481   -4.47%
BenchmarkAppendInt                         10981         9900   -9.84%
BenchmarkFormatUint                         3804         3650   -4.05%
BenchmarkAppendUint                         3506         3303   -5.79%
BenchmarkUnquoteEasy                         714          683   -4.34%
BenchmarkUnquoteHard                        5117         2915  -43.03%

Update #1914.

R=nigeltao, rsc, golang-dev
CC=golang-dev, remy
https://golang.org/cl/6489067
2012-09-09 20:30:08 +02:00
Mikio Hara
b737644266 net: change cname lookup test target to iana.org
It might be meaningful, and stable than others.

R=golang-dev, agl
CC=golang-dev
https://golang.org/cl/6499091
2012-09-09 23:53:48 +09:00
Marcel van Lohuizen
ef48dfa310 exp/locale/collate: added indices to builder for reusing blocks between locales.
Refactored build + buildTrie into build + buildOrdering.
Note that since the tailoring code is not checked in yet, all tailorings are identical
to root.  The table therefore should not and does not grow at this point.

R=r
CC=golang-dev
https://golang.org/cl/6500087
2012-09-08 10:46:55 +09:00
Marcel van Lohuizen
21d94a22fe exp/locale/collate: switch from DUCET to CLDR for the default root table.
R=r
CC=golang-dev
https://golang.org/cl/6499079
2012-09-08 10:38:11 +09:00
Robert Griesemer
d4cdfcf3d9 text/scanner: skip first character if it's a BOM
R=r
CC=golang-dev
https://golang.org/cl/6493097
2012-09-07 17:15:42 -07:00
Robert Griesemer
2a391f467d go/scanner: add missing BOM test
R=r
CC=golang-dev
https://golang.org/cl/6498106
2012-09-07 16:28:15 -07:00
Robert Griesemer
d5ab44e2fe go/scanner: skip first character if it's a BOM
R=r
CC=golang-dev
https://golang.org/cl/6490095
2012-09-07 13:56:31 -07:00
Albert Strasheim
412c60f1fa syscall: Test SCM credentials on Linux.
This test was previously removed in 087c6e15702e.

R=bradfitz, rsc, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/6506061
2012-09-07 10:31:17 -07:00
Lucio De Re
7e414a5b01 net,mime: Minor corrections to documentation comments.
R=r
CC=dsymonds, gobot, golang-dev
https://golang.org/cl/6495085
2012-09-07 10:24:55 -07:00
Rob Pike
cbc9ab75cb cmd/yacc: allow leading underscore in token name
Fixes #4037.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6488093
2012-09-07 09:31:51 -07:00
Rémy Oudompheng
acbe6c94d7 cmd/6g: avoid taking the address of slices unnecessarily.
The main case where it happens is when evaluating &s[i] without
bounds checking, which usually happens during range loops (i=0).

This allows registerization of the corresponding variables,
saving 16 bytes of stack frame for each such range loop and a
LEAQ instruction.

R=golang-dev, rsc, dave
CC=golang-dev, remy
https://golang.org/cl/6497073
2012-09-07 06:54:42 +02:00
Dave Cheney
212ce41d00 runtime: arm: abort if hardware floating point missing
Fixes #3911.

Requires CL 6449127.

dfc@qnap:~$ ./runtime.test
runtime: this CPU has no floating point hardware, so it cannot run
this GOARM=7 binary. Recompile using GOARM=5.

R=rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6442109
2012-09-07 14:26:42 +10:00
Joel Sing
4cfcb4a04b cgo: use debug data section for ELF
When generating enums use the debug data section instead of the
DWARF debug info, if it is available in the ELF file. This allows
mkerrors.sh to work correctly on OpenBSD/386 and NetBSD/386.

Fixes #2470.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6495090
2012-09-07 13:32:40 +10:00
Rob Pike
a225eaf9b7 cmd/yacc: always import fmt, safely
The parser depends on it but the client might not import it, so make sure it's there.
Fixes #4038.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6497094
2012-09-06 14:58:37 -07:00
Joel Sing
256cd7e78e syscall: regenerate/update netbsd z-files
Regenerate/update netbsd z-files on NetBSD 6.0 RC1.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6506062
2012-09-07 02:13:14 +10:00
Dave Cheney
67ee9a7db1 crypto/tls: fix data race on conn.err
Fixes #3862.

There were many areas where conn.err was being accessed
outside the mutex. This proposal moves the err value to
an embedded struct to make it more obvious when the error
value is being accessed.

As there are no Benchmark tests in this package I cannot
feel confident of the impact of this additional locking,
although most will be uncontended.

R=dvyukov, agl
CC=golang-dev
https://golang.org/cl/6497070
2012-09-06 17:50:26 +10:00
Marcel van Lohuizen
f0a31b5fc2 exp/locale/collate/build: moved some of the code to the appropriate file, as
promised in CL 13985.

R=r
CC=golang-dev
https://golang.org/cl/6503071
2012-09-06 13:16:02 +09:00
Nigel Tao
4bd8a38641 image/jpeg: fix quantization tables to be in zig-zag order, not natural
order.

JPEG images generated prior to this CL are still valid JPEGs, as the
quantization tables used are encoded in the wire format. Such JPEGs just
don't use the recommended quantization tables.

R=r, dsymonds, raph, adg
CC=golang-dev, tuom.larsen
https://golang.org/cl/6497083
2012-09-06 11:10:47 +10:00
Nigel Tao
481e5c6ad0 cmd/gc: re-order some OFOO constants. Rename ORRC to ORROTC to be
consistent with OLROT. Delete unused OBAD, OLRC.

R=rsc, dave
CC=golang-dev
https://golang.org/cl/6489082
2012-09-06 10:47:25 +10:00
Russ Cox
5e3224ce79 reflect: faster FieldByName, FieldByNameFunc
The old code was a depth first graph traversal that could, under the
right conditions, end up re-exploring the same subgraphs multiple
times, once for each way to arrive at that subgraph at a given depth.

The new code uses a breadth first search to make sure that it only
visits each reachable embedded struct once.

Also add fast path for the trivial case.

benchmark                old ns/op    new ns/op    delta
BenchmarkFieldByName1         1321          187  -85.84%
BenchmarkFieldByName2         6118         5186  -15.23%
BenchmarkFieldByName3      8218553        42112  -99.49%

R=gri, r
CC=golang-dev
https://golang.org/cl/6458090
2012-09-05 09:35:53 -04:00
Nigel Tao
1c675ac89d cmd/gc: add commentary to the OXXX constants.
R=rsc, daniel.morsing
CC=golang-dev
https://golang.org/cl/6495074
2012-09-05 09:34:52 +10:00
Alan Donovan
ee911c4265 runtime: fix typo in openbsd-only symbol name.
R=golang-dev, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6490076
2012-09-04 16:35:05 -04:00
Sébastien Paolacci
2836c63459 net: fix {FileConn, FileListener, FilePacketConn} fd leak to child process.
All of them call `newFileFD' which must properly restore close-on-exec on
duplicated fds.

R=golang-dev, bradfitz, mikioh.mikioh
CC=golang-dev
https://golang.org/cl/6445081
2012-09-04 12:37:23 -07:00