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Commit Graph

14022 Commits

Author SHA1 Message Date
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
Jonathan Feinberg
452f40f8e0 doc: add important info for would-be go contributors.
Link to the "installing from source" docs instead of the "installing" docs.

Remind would-be hacker to switch to the default branch from the release branch.

R=rsc
CC=golang-dev
https://golang.org/cl/6559043
2012-09-26 14:39:31 -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
Shivakumar GN
b7331f9b3a codereview: use subprocess.call() instead of os.spawnvp() for portability
Fixes #4121.

R=golang-dev, minux.ma, dave, r
CC=golang-dev
https://golang.org/cl/6555049
2012-09-27 01:50:59 +08:00
Robert Griesemer
60a6ae8c3c spec: permit trailing comma in conversions
Also: Adjust prose in Conversions section
to be consistent.

This is a backward-compatible syntax change.
For a discussion see issue 2568.

Fixes #2568.
Fixes #4123.

R=golang-dev, r, iant, rsc
CC=golang-dev
https://golang.org/cl/6572049
2012-09-26 10:31:57 -07:00
Francisco Souza
3c9eb5b48e doc/go1.1: fix metadata json format
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6570054
2012-09-26 08:49:36 -07:00
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
Rob Pike
4391abfb1d test/bench/shootout: new data after 64-bit ints for amd64
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6564046
2012-09-25 14:14:26 +10:00
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
0a006b4923 misc/cgo: prepare for 64-bit ints
In a few places, the existing cgo tests assume that a
Go int is the same as a C int. Making int 64 bits wide
on 64-bit platforms violates this assumption.
Change that code to assume that Go int32 and C int
are the same instead. That's still not great, but it's better,
and I am unaware of any systems we run on where it is not true.

Update #2188.

R=iant, r
CC=golang-dev
https://golang.org/cl/6552064
2012-09-24 14:58:45 -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
afa233a893 CONTRIBUTORS: add Jonathan Feinberg (Google CLA)
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6553067
2012-09-24 14:36:07 -04:00
Andrew Gerrand
d18cc29f55 tag go1.0.3
R=rsc
CC=golang-dev
https://golang.org/cl/6543069
2012-09-24 13:15:33 -05:00
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
Brad Fitzpatrick
93cf366d50 A+C: Add Shivakumar GN (Individual CLA)
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6541062
2012-09-24 09:49:31 -07:00
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