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10025 Commits

Author SHA1 Message Date
Nigel Tao
8f84328fdc cmd/gc: inline convT2E when T is uintptr-shaped. 
GOARCH=amd64 benchmarks

src/pkg/runtime
benchmark                  old ns/op    new ns/op    delta
BenchmarkConvT2ESmall             10           10   +1.00%
BenchmarkConvT2EUintptr            9            0  -92.07%
BenchmarkConvT2EBig               74           74   -0.27%
BenchmarkConvT2I                  27           26   -3.62%
BenchmarkConvI2E                   4            4   -7.05%
BenchmarkConvI2I                  20           19   -2.99%

test/bench/go1
benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17    5930908000   5937260000   +0.11%
BenchmarkFannkuch11      3927057000   3933556000   +0.17%
BenchmarkGobDecode         21998090     21870620   -0.58%
BenchmarkGobEncode         12725310     12734480   +0.07%
BenchmarkGzip             567617600    567892800   +0.05%
BenchmarkGunzip           178284100    178706900   +0.24%
BenchmarkJSONEncode        87693550     86794300   -1.03%
BenchmarkJSONDecode       314212600    324115000   +3.15%
BenchmarkMandelbrot200      7016640      7073766   +0.81%
BenchmarkParse              7852100      7892085   +0.51%
BenchmarkRevcomp         1285663000   1286147000   +0.04%
BenchmarkTemplate         566823800    567606200   +0.14%

I'm not entirely sure why the JSON* numbers have changed, but
eyeballing the profile suggests that it could be spending less
and more time in runtime.{new,old}stack, so it could simply be
stack-split boundary noise.

R=rsc, dave, bsiegert, dsymonds
CC=golang-dev
https://golang.org/cl/6280049
 2012-06-14 10:43:20 +10:00
Rob Pike
733ee91786 encoding/gob: don't cache broken encoding engines. 
Fixes a situation where a nested bad type would still
permit the outer type to install a working engine, leading
to inconsistent behavior.

Fixes #3273.

R=bsiegert, rsc
CC=golang-dev
https://golang.org/cl/6294067
 2012-06-13 15:55:43 -07:00
Brad Fitzpatrick
45969825b5 net/http: use index.html modtime (not directory) for If-Modified-Since 
Thanks to Håvid Falch for finding the problem.

Fixes #3414

R=r, rsc
CC=golang-dev
https://golang.org/cl/6300081
 2012-06-13 14:53:05 -07:00
Rémy Oudompheng
5468d16467 strconv: extend fast parsing algorithm to ParseFloat(s, 32) 
benchmark                  old ns/op    new ns/op    delta
BenchmarkAtof32Decimal           215           73  -65.72%
BenchmarkAtof32Float             233           83  -64.21%
BenchmarkAtof32FloatExp         3351          209  -93.76%
BenchmarkAtof32Random           1939          260  -86.59%

R=rsc
CC=golang-dev, remy
https://golang.org/cl/6294071
 2012-06-13 23:52:00 +02:00
Robert Griesemer
10b88888f6 math/big: correctly test for positive inputs in Int.GCD 
Also: better GCD tests.

R=rsc
CC=golang-dev
https://golang.org/cl/6295076
 2012-06-13 13:54:36 -07:00
Russ Cox
1c4e20744a syscall: fix windows copyFindData 
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6301076
 2012-06-13 16:44:19 -04:00
Robert Griesemer
8140cd9149 godoc: show comments in various filtered views 
Fixes #3454.

R=rsc
CC=golang-dev
https://golang.org/cl/6305069
 2012-06-13 13:32:59 -07:00
Robert Griesemer
f5f23e075e go/ast: comment map implementation 
A comment map associates comments with AST nodes
and permits correct updating of the AST's comment
list when the AST is manipulated.

R=rsc
CC=golang-dev
https://golang.org/cl/6281044
 2012-06-13 13:32:29 -07:00
Russ Cox
503aa6505e go/build: fix boolean negation 
!(linux&cgo | darwin&cgo)
= (!linux|!cgo) & (!darwin|!cgo)
= (!linux&!darwin) | !cgo  // new comment
≠ !linux | !darwin | !cgo  // old comment

Fixes #3726.

R=golang-dev, bsiegert
CC=golang-dev
https://golang.org/cl/6306076
 2012-06-13 16:24:56 -04:00
Jan Ziak
51fe5444fa runtime: improved continuity in hash computation 
Fixes #3695.

R=r, dave, rsc
CC=golang-dev
https://golang.org/cl/6304062
 2012-06-13 15:52:32 -04:00
Robert Griesemer
f4240666be math/big: fix binaryGCD 
R=rsc
CC=golang-dev
https://golang.org/cl/6297085
 2012-06-13 10:29:06 -07:00
Robert Griesemer
b7c5e23df0 math/big: various cleanups 
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6295072
 2012-06-13 09:37:47 -07:00
Christopher Swenson
38735b957c math/big: Implemented binary GCD algorithm 
benchmark                    old ns/op    new ns/op    delta
BenchmarkGCD10x10                 4383         2126  -51.49%
BenchmarkGCD10x100                5612         2124  -62.15%
BenchmarkGCD10x1000               8843         2622  -70.35%
BenchmarkGCD10x10000             17025         6576  -61.37%
BenchmarkGCD10x100000           118985        48130  -59.55%
BenchmarkGCD100x100              45328        11683  -74.23%
BenchmarkGCD100x1000             50141        12678  -74.72%
BenchmarkGCD100x10000           110314        26719  -75.78%
BenchmarkGCD100x100000          630000       156041  -75.23%
BenchmarkGCD1000x1000           654809       137973  -78.93%
BenchmarkGCD1000x10000          985683       159951  -83.77%
BenchmarkGCD1000x100000        4920792       366399  -92.55%
BenchmarkGCD10000x10000       16848950      3732062  -77.85%
BenchmarkGCD10000x100000      55401500      4675876  -91.56%
BenchmarkGCD100000x100000   1126775000    258951800  -77.02%

R=gri, rsc, bradfitz, remyoudompheng, mtj
CC=golang-dev
https://golang.org/cl/6305065
 2012-06-13 09:31:20 -07:00
Nigel Tao
66429dcf75 exp/html: simplify some of the parser's internal methods. 
benchmark          old ns/op    new ns/op    delta
BenchmarkParser      4006888      3950604   -1.40%

R=r, andybalholm
CC=golang-dev
https://golang.org/cl/6301070
 2012-06-13 10:13:05 +10:00
Robert Griesemer
008c62b2cd math/big: optimize common case of Int.Bit(0) 
R=golang-dev, dsymonds, rsc
CC=golang-dev
https://golang.org/cl/6306069
 2012-06-12 09:36:35 -07:00
Rob Pike
ea3c3bb3a8 encoding/gob: better handling of nil pointers 
- better message for top-level nil
- nil inside interface yields error, not panic

Fixes #3704.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6304064
 2012-06-12 00:36:39 -04:00
Rob Pike
2a0fdf6ea0 fmt.Fscanf: don't read past newline 
Makes interactive uses work line-by-line.
Fixes #3481.

R=golang-dev, bradfitz, r
CC=golang-dev
https://golang.org/cl/6297075
 2012-06-11 17:52:09 -04:00
Robert Griesemer
49d6e49087 exp/types: testing resolution of qualified identifiers 
Also: fix a bug with exp/types/GcImport.

R=rsc, r
CC=golang-dev
https://golang.org/cl/6302060
 2012-06-11 11:06:27 -07:00
Brad Fitzpatrick
1d609f9b9f encoding/gob: fix doc typo 
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6300078
 2012-06-09 18:30:44 -07:00
Dave Cheney
0b09425b5c runtime: use uintptr where possible in malloc stats 
linux/arm OMAP4 pandaboard

benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17   68723297000  37026214000  -46.12%
BenchmarkFannkuch11     34962402000  35958435000   +2.85%
BenchmarkGobDecode        137298600    124182150   -9.55%
BenchmarkGobEncode         60717160     60006700   -1.17%
BenchmarkGzip            5647156000   5550873000   -1.70%
BenchmarkGunzip          1196350000   1198670000   +0.19%
BenchmarkJSONEncode       863012800    782898000   -9.28%
BenchmarkJSONDecode      3312989000   2781800000  -16.03%
BenchmarkMandelbrot200     45727540     45703120   -0.05%
BenchmarkParse             74781800     59990840  -19.78%
BenchmarkRevcomp          140043650    139462300   -0.42%
BenchmarkTemplate        6467682000   5832153000   -9.83%

benchmark                  old MB/s     new MB/s  speedup
BenchmarkGobDecode             5.59         6.18    1.11x
BenchmarkGobEncode            12.64        12.79    1.01x
BenchmarkGzip                  3.44         3.50    1.02x
BenchmarkGunzip               16.22        16.19    1.00x
BenchmarkJSONEncode            2.25         2.48    1.10x
BenchmarkJSONDecode            0.59         0.70    1.19x
BenchmarkParse                 0.77         0.97    1.26x
BenchmarkRevcomp              18.15        18.23    1.00x
BenchmarkTemplate              0.30         0.33    1.10x

darwin/386 core duo

benchmark                 old ns/op    new ns/op    delta
BenchmarkBinaryTree17   10591616577   9678245733   -8.62%
BenchmarkFannkuch11     10758473315  10749303846   -0.09%
BenchmarkGobDecode         34379785     34121250   -0.75%
BenchmarkGobEncode         23523721     23475750   -0.20%
BenchmarkGzip            2486191492   2446539568   -1.59%
BenchmarkGunzip           444179328    444250293   +0.02%
BenchmarkJSONEncode       221138507    219757826   -0.62%
BenchmarkJSONDecode      1056034428   1048975133   -0.67%
BenchmarkMandelbrot200     19862516     19868346   +0.03%
BenchmarkRevcomp         3742610872   3724821662   -0.48%
BenchmarkTemplate         960283112    944791517   -1.61%

benchmark                  old MB/s     new MB/s  speedup
BenchmarkGobDecode            22.33        22.49    1.01x
BenchmarkGobEncode            32.63        32.69    1.00x
BenchmarkGzip                  7.80         7.93    1.02x
BenchmarkGunzip               43.69        43.68    1.00x
BenchmarkJSONEncode            8.77         8.83    1.01x
BenchmarkJSONDecode            1.84         1.85    1.01x
BenchmarkRevcomp              67.91        68.24    1.00x
BenchmarkTemplate              2.02         2.05    1.01x

R=rsc, 0xe2.0x9a.0x9b, mirtchovski
CC=golang-dev, minux.ma
https://golang.org/cl/6297047
 2012-06-08 17:35:14 -04:00
Robert Griesemer
014d036d84 math/big: added nat.trailingZeroBits, simplified some code 
Will simplify implementation of binaryGCD.

R=rsc, cswenson
CC=golang-dev
https://golang.org/cl/6299064
 2012-06-08 13:00:49 -07:00
Russ Cox
7762a9dc1f syscall: unexport GetCurrentProcessId on Windows 
This slipped in with the implementation of Getpid in CL 5909043.
I'd exclude that CL entirely but it is tangled up in the Win32finddata changes.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6297065
 2012-06-08 14:28:29 -04:00
Russ Cox
56f5e6d845 syscall: fix windows build 
TBR=bradfitz
CC=golang-dev
https://golang.org/cl/6303061
 2012-06-08 14:04:44 -04:00
Russ Cox
7ad37673e1 syscall: revert API changes in Windows Win32finddata fix. 
Preserve old API by using correct struct in system call
and then copying the results, as we did for SetsockoptLinger.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6307065
 2012-06-08 13:54:48 -04:00
Russ Cox
0c2f0cca7c cmd/api: handle empty API file, ignore -next in release 
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6298063
 2012-06-08 13:44:13 -04:00
Russ Cox
50452720ba regexp/syntax: unexport ErrUnexpectedParen 
This new error is the only API change in the current draft of
Go 1.0.2 CLs. I'd like to include the CL that introduced it,
because it replaces a mysterious 'internal error' with a
useful error message, but I don't want any API changes,
so unexport the error constant for now. It can be
re-exported for Go 1.1.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6294055
 2012-06-08 13:05:01 -04:00
Nigel Tao
6c204982e0 exp/html: check the context node for consistency when parsing fragments. 
R=rsc
CC=golang-dev
https://golang.org/cl/6303053
 2012-06-08 13:55:15 +10:00
Dave Cheney
072e36d5ef cmd/5c, cmd/5g, cmd/5l: fix cross compilation failure on darwin 
Fixes #3708.

The fix to allow 5{c,g,l} to compile under clang 3.1 broke cross
compilation on darwin using the Apple default compiler on 10.7.3.

This failure was introduced in 9b455eb64690.

This has been tested by cross compiling on darwin/amd64 to linux/arm using

* gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00)
* clang version 3.1 (branches/release_31)

As well as on linux/arm using

* gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)
* Ubuntu clang version 3.0-6ubuntu3 (tags/RELEASE_30/final) (based on LLVM 3.0)
* Debian clang version 3.1-4 (branches/release_31) (based on LLVM 3.1)

R=consalus, rsc
CC=golang-dev
https://golang.org/cl/6307058
 2012-06-08 13:13:02 +10:00
Shenghou Ma
a0084b3494 cmd/5a, cmd/5l: add MULW{T,B} and MULAW{T,B} support for ARM 
Supported in ARMv5TE and above.
        Also corrected MULA disassembly listing.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6265045
 2012-06-08 02:42:28 +08:00
Russ Cox
f51390b23c cmd/cgo: make Go code order deterministic 
The type declarations were being generated using
a range over a map, which meant that successive
runs produced different orders. This will make sure
successive runs produce the same files.

Fixes #3707.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6300062
 2012-06-07 12:37:50 -04:00
Russ Cox
b185de82a4 cmd/gc: limit data disassembly to -SS 
This makes -S useful again.

R=ken2
CC=golang-dev
https://golang.org/cl/6302054
 2012-06-07 12:05:34 -04:00
Russ Cox
2a9410c19c cmd/gc: fix LEAQ $0, SI bug 
Cannot take effective address of constant.

Fixes #3670.

R=ken2
CC=golang-dev
https://golang.org/cl/6299055
 2012-06-07 11:59:18 -04:00
Russ Cox
9fe424737b cmd/gc: run escape analysis in call graph dependency order 
If there are mutually recursive functions, there is a cycle in
the dependency graph, so the order is actually dependency order
among the strongly connected components: mutually recursive
functions get put into the same batch and analyzed together.
(Until now the entire package was put in one batch.)

The non-recursive case (single function, maybe with some
closures inside) will be able to be more precise about inputs
that escape only back to outputs, but that is not implemented yet.

R=ken2
CC=golang-dev, lvd
https://golang.org/cl/6304050
 2012-06-07 03:15:09 -04:00
Russ Cox
6363fc5aa6 cmd/gc: fix type checking loop 
CL 4313064 fixed its test case but did not address a
general enough problem:

type T1 struct { F *T2 }
type T2 T1
type T3 T2

could still end up copying the definition of T1 for T2
before T1 was done being evaluated, or T3 before T2
was done.

In order to propagate the updates correctly,
record a copy of an incomplete type for re-execution
once the type is completed. Roll back CL 4313064.

Fixes #3709.

R=ken2
CC=golang-dev, lstoakes
https://golang.org/cl/6301059
 2012-06-07 03:06:40 -04:00
Russ Cox
f18ced3fc9 cmd/gc: delete dead code 
R=ken2
CC=golang-dev
https://golang.org/cl/6307050
 2012-06-07 02:15:23 -04:00
Russ Cox
744b23fe48 cmd/gc: do not crash on struct with _ field 
Fixes #3607.

R=ken2
CC=golang-dev
https://golang.org/cl/6296052
 2012-06-07 02:05:08 -04:00
Russ Cox
ee5f59ab4f cmd/gc: preserve side effects during inlining of function with _ argument 
Fixes #3593.

R=ken2
CC=golang-dev, lvd
https://golang.org/cl/6305061
 2012-06-07 01:54:07 -04:00
Russ Cox
09b736a2ab encoding/json: fix panic unmarshaling into non-nil interface value 
Fixes #3614.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/6306051
 2012-06-07 01:48:55 -04:00
Russ Cox
8022a1a588 cmd/gc: mark output of typename as type-checked 
R=ken2
CC=golang-dev
https://golang.org/cl/6302051
 2012-06-07 00:51:11 -04:00
Nigel Tao
c8fac7b967 exp/html: when parsing, compare atoms (ints) instead of strings. 
This is the mechanical part of the 2-part change that started with
https://golang.org/cl/6305053/

R=rsc
CC=andybalholm, golang-dev, r
https://golang.org/cl/6295055
 2012-06-07 13:46:57 +10:00
Nigel Tao
cd21eff705 exp/html: make the tokenizer return atoms for tag tokens. 
This is part 1 of a 2 part changelist. Part 2 contains the mechanical
change to parse.go to compare atoms (ints) instead of strings.

The overall effect of the two changes are:
benchmark                      old ns/op    new ns/op    delta
BenchmarkParser                  4462274      4058254   -9.05%
BenchmarkRawLevelTokenizer        913202       912917   -0.03%
BenchmarkLowLevelTokenizer       1268626      1267836   -0.06%
BenchmarkHighLevelTokenizer      1947305      1968944   +1.11%

R=rsc
CC=andybalholm, golang-dev, r
https://golang.org/cl/6305053
 2012-06-07 13:05:35 +10:00
Alex Brainman
f54d61061c runtime: include "typekind.h" to fix windows build 
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6305059
 2012-06-07 09:37:05 +10:00
Nigel Tao
90fa13d2b7 exp/html/atom: add more atoms. 
This completely covers the tags used by exp/html's parser.

Before:
295 atoms; 1406 string bytes + 2048 tables = 3454 total data
BenchmarkLookup    50000         59841 ns/op

After:
322 atoms; 1508 string bytes + 2048 tables = 3556 total data
BenchmarkLookup    50000         60159 ns/op

R=r
CC=golang-dev
https://golang.org/cl/6296045
 2012-06-07 09:35:35 +10:00
Fazlul Shahriar
42a76efc92 net: pass tests on Plan 9 again 
R=golang-dev
CC=golang-dev
https://golang.org/cl/6280045
 2012-06-06 18:38:56 -04:00
Jan Ziak
ede6718cd7 runtime: move type kinds into a separate file 
R=rsc
CC=golang-dev
https://golang.org/cl/6285047
 2012-06-06 17:20:02 -04:00
Daniel Morsing
c8cbbd31f0 fmt: fix doc typo 
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6308046
 2012-06-06 16:54:02 -04:00
Markus Sonderegger
3476c23124 crypto/rand: enable rand.Reader on plan9 
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6297044
 2012-06-06 16:05:47 -04:00
Russ Cox
ee3c272611 fmt: fix inadvertent change to %#v 
The reordering speedup in CL 6245068 changed the semantics
of %#v by delaying the clearing of some flags.  Restore the old
semantics and add a test.

Fixes #3706.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6302048
 2012-06-06 15:08:00 -04:00
Shenghou Ma
58993e514e net: fix cgoAddrInfoFlags() on FreeBSD 
CL 6250075 removed AI_MASK mask on all BSD variants,
        however FreeBSD's AI_MASK does not include AI_V4MAPPED
        and AI_ALL, and its libc is strict about the ai_flags.

        This will fix the FreeBSD builder.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6305054
 2012-06-06 22:03:31 +08:00
Shenghou Ma
81368d9bb9 build: restore PATH before "dist banner" 
Fixes #3699.

R=golang-dev, r, rsc
CC=golang-dev
https://golang.org/cl/6272048
 2012-06-06 20:19:16 +08:00