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Commit Graph

10369 Commits

Author SHA1 Message Date
Ivan Krasin
5287175ad9 runtime: add vdso support for linux/amd64. Fixes issue 1933.
R=iant, imkrasin, krasin, iant, minux.ma, rsc, nigeltao, r, fullung
CC=golang-dev
https://golang.org/cl/6454046
2012-08-31 18:07:04 -04:00
Rémy Oudompheng
ba97d52b85 cmd/gc: fix escape analysis bug with variable capture in loops.
Fixes #3975.

R=rsc, lvd
CC=golang-dev, remy
https://golang.org/cl/6475061
2012-08-31 22:23:37 +02:00
Alexandru Moșoi
3efc482190 net/rpc/jsonrpc: handles missing "params" in jsonrpc.
A crash happens in the first request in a connection
if "params" field is missing because c.req.Params is Nil.

Fixes #3848.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6446051
2012-08-31 15:52:27 -04:00
Russ Cox
020c6558d9 runtime/pprof: restore articles in type doc comments
Reverts part of CL 6460082.

If a doc comment describes a type by explaining the
meaning of one instance of the type, a leading article
is fine and makes the text less awkward.

Compare:
// A dog is a kind of animal.
// Dog is a kind of animal.

R=golang-dev, dsymonds, dvyukov, r
CC=golang-dev
https://golang.org/cl/6494066
2012-08-31 13:49:57 -04:00
Akshat Kumar
a72bebf6e1 src: Add support for 64-bit version of Plan 9
This set of changes extends the Plan 9 support
to include the AMD64 architecture and should
work on all versions of Plan 9.

R=golang-dev, rminnich, noah.evans, rsc, minux.ma, npe
CC=akskuma, golang-dev, jfflore, noah.evans
https://golang.org/cl/6479052
2012-08-31 13:21:13 -04:00
Daniel Morsing
85ce3c7241 cmd/gc: mark broken type declarations as broken.
This fixes a spurious 'invalid recursive type' error, and stops the compiler from emitting errors on uses of the invalid type.

Fixes #3766.

R=golang-dev, dave, minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6443100
2012-08-31 13:02:29 -04:00
Russ Cox
e29659b3c3 net/http: add (*ServeMux).Handler method
The Handler method makes the ServeMux dispatch logic
available to wrappers that enforce additional constraints
on requests.

R=golang-dev, bradfitz, dsymonds
CC=golang-dev
https://golang.org/cl/6450165
2012-08-31 12:16:31 -04:00
Christian Himpel
db7dbe32aa net/http: fix inserting of implicit redirects in serve mux
In serve mux, if pattern contains a host name, pass only the path to
the redirect handler.

Add tests for serve mux redirections.

R=rsc
CC=bradfitz, gobot, golang-dev
https://golang.org/cl/6329045
2012-08-31 12:00:01 -04:00
Nigel Tao
13cf2473b8 exp/html: change a node's children from a slice to a linked list.
Also rename Node.{Add,Remove} to Node.{AppendChild,RemoveChild} to
be consistent with the DOM.

benchmark                      old ns/op    new ns/op    delta
BenchmarkParser                  4042040      3749618   -7.23%

benchmark                       old MB/s     new MB/s  speedup
BenchmarkParser                    19.34        20.85    1.08x

BenchmarkParser mallocs per iteration is also:
10495 before / 7992 after

R=andybalholm, r, adg
CC=golang-dev
https://golang.org/cl/6495061
2012-08-31 10:00:12 +10:00
Robert Griesemer
d6c69dc602 go/scanner: don't print garbage if there's no error
R=r
CC=golang-dev
https://golang.org/cl/6489059
2012-08-30 16:10:33 -07:00
Rob Pike
363ec80dec cmd/gc: string conversion for surrogates
This is required by the spec to produce the replacement char.
The fix lies in lib9's rune code.

R=golang-dev, nigeltao, rsc
CC=golang-dev
https://golang.org/cl/6443109
2012-08-30 11:16:55 -07:00
Rob Pike
b7627d3d1f path: improve documentation for Dir
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6495059
2012-08-30 11:16:41 -07:00
Dmitriy Vyukov
e61c047c3e net/rpc: protect serviceMap with RWMutex
R=r, r
CC=golang-dev
https://golang.org/cl/6494044
2012-08-30 20:32:32 +04:00
Rob Pike
de13e8dccd text/template: make spaces significant
Other than catching an error case that was missed before, this
CL introduces no changes to the template language or API.

For simplicity, templates use spaces as argument separators.
This means that spaces are significant: .x .y is not the same as .x.y.
In the existing code, these cases are discriminated by the lexer,
but that means for instance that (a b).x cannot be distinguished
from (a b) .x, which is lousy. Although that syntax is not
supported yet, we want to support it and this CL is a necessary
step.

This CL emits a "space" token (actually a run of spaces) from
the lexer so the parser can discriminate these cases. It therefore
fixes a couple of undisclosed bugs ("hi".x is now an error) but
doesn't otherwise change the language. Later CLs will amend
the grammar to make .X a proper operator.

There is one unpleasantness: With space a token, three-token
lookahead is now required when parsing variable declarations
to discriminate them from plain variable references. Otherwise
the change isn't bad.

The CL also moves the debugging print code out of the lexer
into the test, which is the only place it's needed or useful.

Step towards resolving issue 3999.
It still remains to move field chaining out of the lexer
and into the parser and make field access an operator.

R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6492054
2012-08-29 21:42:53 -07:00
Andrew Balholm
bdf6a43e23 cmd/yacc/units.txt: fix exchange rates
In the example "units" program for goyacc, the exchange rates were
        reciprocals of the correct amounts. Turn them right-side-up
        and update them to current figures.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6495053
2012-08-29 10:06:37 -07:00
Shenghou Ma
e607380ff6 cmd/ld: handle a special case of scattered relocation 2/1 on Darwin/386
Fixes #1635.

R=golang-dev, dave, r
CC=golang-dev
https://golang.org/cl/6496043
2012-08-29 23:42:05 +08:00
Shenghou Ma
f78ead3ca4 syscall: extract an ExampleLoadLibrary from comment
while we are at it, fix some out-of-date comments.

R=golang-dev, dave, r
CC=golang-dev
https://golang.org/cl/6498054
2012-08-29 21:44:46 +08:00
Dave Cheney
f8d4bb884f net/http/httputil: fix race in DumpRequestOut
Fixes #3892.

Swapping the order of the writers inside the MultiWriter ensures
the request will be written to buf before http.ReadRequest completes.

The fencedBuffer is not required to make the test pass on
any machine that I have access too, but as the buf is shared
across goroutines, I think it is necessary for correctness.

R=bradfitz, fullung, franciscossouza
CC=golang-dev
https://golang.org/cl/6483061
2012-08-29 09:05:30 +10:00
Mikio Hara
ddbc85ce48 net: delete unused socket-level option helpers
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6499043
2012-08-29 06:54:00 +09:00
Christopher Swenson
baf426f10f math/big: Replace RCLQ + ANDQ with SETCS in unrolled arithmetic assembly.
benchmark             old ns/op    new ns/op    delta
BenchmarkAddVW_1              8            8   +0.60%
BenchmarkAddVW_2             10            9   -8.64%
BenchmarkAddVW_3             10           10   -4.63%
BenchmarkAddVW_4             10           11   +3.67%
BenchmarkAddVW_5             11           12   +5.98%
BenchmarkAddVW_1e1           18           20   +6.38%
BenchmarkAddVW_1e2          129          115  -10.85%
BenchmarkAddVW_1e3         1270         1089  -14.25%
BenchmarkAddVW_1e4        13376        12145   -9.20%
BenchmarkAddVW_1e5       130392       125260   -3.94%

benchmark              old MB/s     new MB/s  speedup
BenchmarkAddVW_1        7709.10      7661.92    0.99x
BenchmarkAddVW_2       12451.10     13604.00    1.09x
BenchmarkAddVW_3       17727.81     18721.54    1.06x
BenchmarkAddVW_4       23552.64     22708.81    0.96x
BenchmarkAddVW_5       27411.40     25816.22    0.94x
BenchmarkAddVW_1e1     34063.19     32023.06    0.94x
BenchmarkAddVW_1e2     49529.97     55360.55    1.12x
BenchmarkAddVW_1e3     50380.44     58764.18    1.17x
BenchmarkAddVW_1e4     47843.59     52696.10    1.10x
BenchmarkAddVW_1e5     49082.60     51093.66    1.04x

R=gri, rsc, r
CC=golang-dev
https://golang.org/cl/6480063
2012-08-28 09:29:45 -07:00
Shenghou Ma
f653dfeb49 cmd/api: recognize version "devel" as dev. branch and apply -next
R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6476066
2012-08-28 04:03:27 +08:00
Brad Fitzpatrick
49f29c9c22 net/http: send an explicit zero Content-Length when Handler never Writes
Fixes #4004

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6472055
2012-08-26 11:17:55 -07:00
Joel Sing
79473d6b1c runtime: use netbsd signal ABI v2
Use version 2 of the NetBSD signal ABI - both version 2 and version 3
are supported by the kernel, with near identical behaviour. However,
the netbsd32 compat code does not allow version 3 to be used, which
prevents Go netbsd/386 binaries from running in compat mode on a
NetBSD amd64 kernel. Switch to version 2 of the ABI, which is the
same version currently used by NetBSD's libc.

R=minux.ma
CC=golang-dev
https://golang.org/cl/6476068
2012-08-26 20:57:47 +10:00
Robert Griesemer
74c6325142 math/big: fix broken comment
R=iant, iant
CC=golang-dev
https://golang.org/cl/6485064
2012-08-24 13:50:09 -07:00
Rob Pike
8b23066239 text/template: catch (A).X as a parse error
This shouldn't be an error (see issue 3999), but until it's handled
correctly, treat it as one to avoid confusion. Without this CL,
(A).X parses as two arguments.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6473059
2012-08-24 13:00:24 -07:00
Rob Pike
cc842c738e text/template: allow grouping of pipelines using parentheses
Based on work by Russ Cox. From his CL:

        This is generally useful but especially helpful when trying
        to use the built-in boolean operators.  It lets you write:

        {{if not (f 1)}} foo {{end}}
        {{if and (f 1) (g 2)}} bar {{end}}
        {{if or (f 1) (g 2)}} quux {{end}}

        instead of

        {{if f 1 | not}} foo {{end}}
        {{if f 1}}{{if g 2}} bar {{end}}{{end}}
        {{$do := 0}}{{if f 1}}{{$do := 1}}{{else if g 2}}{{$do := 1}}{{end}}{{if $do}} quux {{end}}

The result can be a bit LISPy but the benefit in expressiveness and readability
for such a small change justifies it.

I believe no changes are required to html/template.

Fixes #3276.

R=golang-dev, adg, rogpeppe, minux.ma
CC=golang-dev
https://golang.org/cl/6482056
2012-08-24 12:37:23 -07:00
Robert Griesemer
3bd8684fac math/big: minor tweaks to assembly code (slightly better performance)
Benchmarks run on 2.8GHz Quad-Code Intel Xeon,
4GB 800MHz DDR2 FB-DIMM ("PowerMac").

benchmark             old ns/op    new ns/op    delta
BenchmarkAddVV_1              7            7   -0.82%
BenchmarkAddVV_2              8            8   -3.46%
BenchmarkAddVV_3             10            9   -4.81%
BenchmarkAddVV_4              9            9   -1.89%
BenchmarkAddVV_5             11           10   -5.22%
BenchmarkAddVV_1e1           17           18   +4.05%
BenchmarkAddVV_1e2          117          115   -1.71%
BenchmarkAddVV_1e3         1095         1090   -0.46%
BenchmarkAddVV_1e4        13149        12679   -3.57%
BenchmarkAddVV_1e5       135133       129482   -4.18%
BenchmarkAddVW_1              6            6   -1.14%
BenchmarkAddVW_2              7            7   +3.78%
BenchmarkAddVW_3              8            8   +0.12%
BenchmarkAddVW_4              8            8   -6.52%
BenchmarkAddVW_5              9            8   -3.70%
BenchmarkAddVW_1e1           14           13   -4.29%
BenchmarkAddVW_1e2           97           96   -1.33%
BenchmarkAddVW_1e3          953          940   -1.36%
BenchmarkAddVW_1e4         9776         9527   -2.55%
BenchmarkAddVW_1e5       102396        97738   -4.55%

benchmark              old MB/s     new MB/s  speedup
BenchmarkAddVV_1        8702.84      8774.56    1.01x
BenchmarkAddVV_2       14739.60     15277.82    1.04x
BenchmarkAddVV_3       18375.37     19398.16    1.06x
BenchmarkAddVV_4       26935.44     27464.68    1.02x
BenchmarkAddVV_5       27754.04     29423.30    1.06x
BenchmarkAddVV_1e1     37050.89     35629.72    0.96x
BenchmarkAddVV_1e2     54289.15     55533.24    1.02x
BenchmarkAddVV_1e3     58428.83     58682.53    1.00x
BenchmarkAddVV_1e4     48670.55     50475.99    1.04x
BenchmarkAddVV_1e5     47360.54     49427.66    1.04x
BenchmarkAddVW_1       10397.27     10502.23    1.01x
BenchmarkAddVW_2       17279.03     16654.13    0.96x
BenchmarkAddVW_3       23858.39     23825.89    1.00x
BenchmarkAddVW_4       29799.42     31895.06    1.07x
BenchmarkAddVW_5       34781.83     36105.11    1.04x
BenchmarkAddVW_1e1     45629.88     47597.42    1.04x
BenchmarkAddVW_1e2     65341.93     66240.04    1.01x
BenchmarkAddVW_1e3     67153.67     68069.83    1.01x
BenchmarkAddVW_1e4     65464.60     67173.83    1.03x
BenchmarkAddVW_1e5     62501.88     65480.66    1.05x

R=iant
CC=golang-dev
https://golang.org/cl/6484056
2012-08-24 10:51:39 -07:00
Robert Griesemer
35422bc11f math/big: faster (add|sub)V(V|W) routines
Benchmarks run on 3.06GHz Intel Core 2 Duo,
4GB 800MHz DDR2 SDRAM ("iMac").

benchmark             old ns/op    new ns/op    delta
BenchmarkAddVV_1              6            6   +2.75%
BenchmarkAddVV_2              9            7  -19.71%
BenchmarkAddVV_3              9            9   +2.25%
BenchmarkAddVV_4             10            8  -20.46%
BenchmarkAddVV_5             12           10  -19.53%
BenchmarkAddVV_1e1           23           15  -32.48%
BenchmarkAddVV_1e2          213          107  -49.77%
BenchmarkAddVV_1e3         2088          993  -52.44%
BenchmarkAddVV_1e4        20874        12027  -42.38%
BenchmarkAddVV_1e5       209858       121480  -42.11%
BenchmarkAddVW_1              5            5   +0.90%
BenchmarkAddVW_2             11           11   -3.51%
BenchmarkAddVW_3              7            7   -0.27%
BenchmarkAddVW_4              8            7   -6.32%
BenchmarkAddVW_5              9            8  -10.89%
BenchmarkAddVW_1e1           17           12  -26.01%
BenchmarkAddVW_1e2          155           89  -42.32%
BenchmarkAddVW_1e3         1479          873  -40.97%
BenchmarkAddVW_1e4        13838         8764  -36.67%
BenchmarkAddVW_1e5       147353        89560  -39.22%

benchmark              old MB/s     new MB/s  speedup
BenchmarkAddVV_1        9765.57      9508.55    0.97x
BenchmarkAddVV_2       13077.63     16284.97    1.25x
BenchmarkAddVV_3       20599.58     20156.67    0.98x
BenchmarkAddVV_4       23591.58     29516.02    1.25x
BenchmarkAddVV_5       24920.95     31194.10    1.25x
BenchmarkAddVV_1e1     27393.76     40621.71    1.48x
BenchmarkAddVV_1e2     29911.96     59592.99    1.99x
BenchmarkAddVV_1e3     30650.73     64429.84    2.10x
BenchmarkAddVV_1e4     30660.09     53213.08    1.74x
BenchmarkAddVV_1e5     30496.74     52683.46    1.73x
BenchmarkAddVW_1       11503.39     11405.98    0.99x
BenchmarkAddVW_2       11203.56     11586.92    1.03x
BenchmarkAddVW_3       26173.45     26224.75    1.00x
BenchmarkAddVW_4       30560.30     32621.94    1.07x
BenchmarkAddVW_5       33183.81     37269.94    1.12x
BenchmarkAddVW_1e1     36991.75     50098.53    1.35x
BenchmarkAddVW_1e2     41087.14     71549.93    1.74x
BenchmarkAddVW_1e3     43266.42     73279.83    1.69x
BenchmarkAddVW_1e4     46246.74     73021.97    1.58x
BenchmarkAddVW_1e5     43433.00     71459.96    1.65x

Benchmarks run on 2.8GHz Quad-Code Intel Xeon,
4GB 800MHz DDR2 FB-DIMM ("PowerMac").

benchmark             old ns/op    new ns/op    delta
BenchmarkAddVV_1              7            7   +2.51%
BenchmarkAddVV_2              8            8   +3.70%
BenchmarkAddVV_3             10           10   +4.00%
BenchmarkAddVV_4             11            9  -19.49%
BenchmarkAddVV_5             14           11  -18.44%
BenchmarkAddVV_1e1           23           17  -27.00%
BenchmarkAddVV_1e2          234          117  -50.00%
BenchmarkAddVV_1e3         2284         1095  -52.06%
BenchmarkAddVV_1e4        22906        13149  -42.60%
BenchmarkAddVV_1e5       229860       135133  -41.21%
BenchmarkAddVW_1              6            6   +1.15%
BenchmarkAddVW_2              7            7   +1.37%
BenchmarkAddVW_3              7            8   +1.00%
BenchmarkAddVW_4              9            8   -6.93%
BenchmarkAddVW_5             10            9  -13.21%
BenchmarkAddVW_1e1           18           14  -24.32%
BenchmarkAddVW_1e2          170           97  -42.41%
BenchmarkAddVW_1e3         1619          953  -41.14%
BenchmarkAddVW_1e4        15142         9776  -35.44%
BenchmarkAddVW_1e5       160835       102396  -36.33%

benchmark              old MB/s     new MB/s  speedup
BenchmarkAddVV_1        8928.95      8702.84    0.97x
BenchmarkAddVV_2       15298.84     14739.60    0.96x
BenchmarkAddVV_3       19116.52     18375.37    0.96x
BenchmarkAddVV_4       21644.30     26935.44    1.24x
BenchmarkAddVV_5       22771.64     27754.04    1.22x
BenchmarkAddVV_1e1     27017.62     37050.89    1.37x
BenchmarkAddVV_1e2     27326.09     54289.15    1.99x
BenchmarkAddVV_1e3     28016.84     58428.83    2.09x
BenchmarkAddVV_1e4     27939.38     48670.55    1.74x
BenchmarkAddVV_1e5     27843.00     47360.54    1.70x
BenchmarkAddVW_1       10510.97     10397.27    0.99x
BenchmarkAddVW_2       17499.71     17279.03    0.99x
BenchmarkAddVW_3       24093.93     23858.39    0.99x
BenchmarkAddVW_4       27733.08     29799.42    1.07x
BenchmarkAddVW_5       30267.17     34781.83    1.15x
BenchmarkAddVW_1e1     34566.78     45629.88    1.32x
BenchmarkAddVW_1e2     37521.89     65341.93    1.74x
BenchmarkAddVW_1e3     39513.18     67153.67    1.70x
BenchmarkAddVW_1e4     42263.80     65464.60    1.55x
BenchmarkAddVW_1e5     39792.21     62501.88    1.57x

R=iant, remyoudompheng, nightlyone, minux.ma
CC=golang-dev
https://golang.org/cl/6482062
2012-08-24 09:20:44 -07:00
Marcel van Lohuizen
c61a185f35 exp/locale/collate: add code to ignore tests with (unpaired) surrogates.
In the regtest data, surrogates are assigned primary weights based on
the surrogate code point value.  Go now converts surrogates to FFFD, however,
meaning that the primary weight is based on this code point instead.
This change drops tests with surrogates and lets the tests pass.

R=r
CC=golang-dev
https://golang.org/cl/6461100
2012-08-24 15:56:07 +02:00
Dmitriy Vyukov
75af013229 net/http: add parallel client/server benchmark
R=bradfitz@golang.org

R=bradfitz
CC=bradfitz, dave, dsymonds, gobot, golang-dev
https://golang.org/cl/6441134
2012-08-24 14:19:49 +04:00
Nigel Tao
8eb05b3843 exp/html: remove unused forTag function.
R=adg
CC=golang-dev
https://golang.org/cl/6480051
2012-08-24 14:15:55 +10:00
Julien Schmidt
37b40dab51 database/sql: stop reuse of bad connections
The second parameter for sql.putConn() (err) is always nil. As a result bad
connections are reused, even if the driver returns an driver.ErrBadConn.
Unsing a pointer to err instead achievs the desired behavior.
See http://code.google.com/p/go/issues/detail?id=3777 for more details.
Fixes #3777.

R=golang-dev, dave, bradfitz, jameshuachow, BlakeSGentry
CC=golang-dev
https://golang.org/cl/6348069
2012-08-23 19:29:47 -07:00
Robert Griesemer
77e98fb8f2 go/scanner: don't drop identifiers starting with non-ASCII letter...
Bug introduced with CL 6454150.

Fixes #4000.

R=r
CC=golang-dev
https://golang.org/cl/6474061
2012-08-23 17:03:33 -07:00
Robert Griesemer
053b448d61 math/big: added benchmarks to establish baseline for core functions
BenchmarkAddVV_1          500000000        7.24 ns/op     8844.11 MB/s
BenchmarkAddVV_2          100000000       10.4 ns/op     12290.41 MB/s
BenchmarkAddVV_3          100000000       10.7 ns/op     17966.58 MB/s
BenchmarkAddVV_4          100000000       12.3 ns/op     20848.67 MB/s
BenchmarkAddVV_5          100000000       14.5 ns/op     21993.82 MB/s
BenchmarkAddVV_1e1        100000000       24.0 ns/op     26720.65 MB/s
BenchmarkAddVV_1e2         10000000      246 ns/op       26014.58 MB/s
BenchmarkAddVV_1e3          1000000     2416 ns/op       26485.06 MB/s
BenchmarkAddVV_1e4           100000    23874 ns/op       26806.36 MB/s
BenchmarkAddVV_1e5            10000   241155 ns/op       26538.87 MB/s
BenchmarkAddVW_1          500000000        6.12 ns/op    10461.91 MB/s
BenchmarkAddVW_2          200000000       11.0 ns/op     11596.63 MB/s
BenchmarkAddVW_3          200000000        8.97 ns/op    21409.82 MB/s
BenchmarkAddVW_4          100000000       10.8 ns/op     23696.72 MB/s
BenchmarkAddVW_5          100000000       12.5 ns/op     25524.88 MB/s
BenchmarkAddVW_1e1        100000000       21.5 ns/op     29786.32 MB/s
BenchmarkAddVW_1e2         10000000      168 ns/op       37925.36 MB/s
BenchmarkAddVW_1e3          1000000     1658 ns/op       38579.15 MB/s
BenchmarkAddVW_1e4           100000    16492 ns/op       38805.85 MB/s
BenchmarkAddVW_1e5            10000   172155 ns/op       37175.69 MB/s
BenchmarkAddMulVVW_1      100000000       12.9 ns/op      4968.49 MB/s
BenchmarkAddMulVVW_2      100000000       15.5 ns/op      8279.42 MB/s
BenchmarkAddMulVVW_3      100000000       13.4 ns/op     14340.53 MB/s
BenchmarkAddMulVVW_4      100000000       15.8 ns/op     16194.94 MB/s
BenchmarkAddMulVVW_5      100000000       18.9 ns/op     16906.61 MB/s
BenchmarkAddMulVVW_1e1     50000000       32.3 ns/op     19838.35 MB/s
BenchmarkAddMulVVW_1e2     10000000      285 ns/op       22427.28 MB/s
BenchmarkAddMulVVW_1e3      1000000     2777 ns/op       23040.42 MB/s
BenchmarkAddMulVVW_1e4       100000    27901 ns/op       22938.01 MB/s
BenchmarkAddMulVVW_1e5        10000   281087 ns/op       22768.73 MB/s

R=r
CC=golang-dev
https://golang.org/cl/6478055
2012-08-23 15:56:14 -07:00
Adam Langley
0a115d72c1 crypto/tls: return better error message in the case of an SSLv2 handshake.
Update #3930
Return a better error message in this situation.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6474055
2012-08-23 16:44:44 -04:00
Mikio Hara
6cf77f2af4 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
2012-08-23 20:54:00 +09:00
Shenghou Ma
e80f6a4de1 cmd/6g: fix float32/64->uint64 conversion
CVTSS2SQ's rounding mode is controlled by the RC field of MXCSR;
as we specifically need truncate semantic, we should use CVTTSS2SQ.

    Fixes #3804.

R=rsc, r
CC=golang-dev
https://golang.org/cl/6352079
2012-08-23 14:35:26 +08:00
Shenghou Ma
1cf27acfed cmd/ld: set ELF header flags for our Linux/ARM binary
To make it more compliant.
This won't affect the behavior of running on OABI-only kernels.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6475044
2012-08-23 14:33:41 +08:00
Nigel Tao
251199c430 cmd/8g: roll back the small integer constant optimizations introduced
in 13416:67c0b8c8fb29 "faster code, mainly for rotate" [1]. The codegen
can run out of registers if there are too many small-int arithmetic ops.

An alternative approach is to copy 6g's sbop/abop codegen to 8g, but
this change is less risky.

Fixes #3835.

[1] http://code.google.com/p/go/source/diff?spec=svn67c0b8c8fb29b1b7b6221977af6b89cae787b941&name=67c0b8c8fb29&r=67c0b8c8fb29b1b7b6221977af6b89cae787b941&format=side&path=/src/cmd/8g/cgen.c

R=rsc, remyoudompheng, r
CC=golang-dev
https://golang.org/cl/6450163
2012-08-23 16:17:22 +10:00
Rob Pike
6fd2febaef time: fix spacing in comment.
No semantic change.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6475050
2012-08-22 21:30:18 -07:00
Carlos Castillo
7802080962 time: add YearDay method for time.Time structs
YearDay provides the day in the year represented by a given time.Time
object. This value is normally computed as part of other date calculations,
but not exported.

Fixes #3932.

R=golang-dev, r, remyoudompheng
CC=golang-dev, rsc
https://golang.org/cl/6460069
2012-08-22 20:49:16 -07:00
Rob Pike
84a5a9b558 time: avoid data race in abs
Fixes #3967.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6460115
2012-08-22 14:36:23 -07:00
Dave Borowitz
2eb6a16e16 net/http: Set TLSClientConfig.ServerName on every HTTP request.
This makes SNI "just work" for callers using the standard http.Client.

Since we now have a test that depends on the httptest.Server cert, change
the cert to be a CA (keeping all other fields the same).

R=bradfitz
CC=agl, dsymonds, gobot, golang-dev
https://golang.org/cl/6448154
2012-08-22 09:15:41 -07:00
Joel Sing
2281c3294b cmd/go: fix cgo linking on netbsd
NetBSD's built-in linker script for 'ld -r' does not provide a
SEARCH_DIR. As a result libgcc.a is not found when -lgcc is used.

Work around this by determining the path to libgcc (by invoking
gcc with the -print-libgcc-file-name option) and explicitly
referencing the resulting library.

R=golang-dev, iant, aram, lucio.dere, minux.ma
CC=golang-dev
https://golang.org/cl/6470044
2012-08-22 22:23:56 +10:00
Joakim Sernbrant
2e6d0968e3 archive/zip: zip64 support
R=golang-dev, r, adg
CC=golang-dev
https://golang.org/cl/6463050
2012-08-22 11:05:24 +10:00
Nigel Tao
fa0e9cd279 exp/html: refactor the parser.read method.
R=andybalholm
CC=golang-dev
https://golang.org/cl/6463070
2012-08-21 20:59:02 +10:00
Dave Cheney
46c9346d74 net/http: fix misplaced defer and example
Moves the defer (again).

Also, correct the example documentation to match.

R=r, robert.hencke, iant, dsymonds, bradfitz
CC=golang-dev
https://golang.org/cl/6458158
2012-08-21 11:46:07 +10:00
Dave Cheney
2bdc60f8e7 net/http: fix send on close channel error
Fixes #3793.

Tested using GOMAXPROCS=81 which was able to trigger a panic
in TestStressSurpriseServerCloses continually on a Core i5.

R=fullung, bradfitz
CC=golang-dev
https://golang.org/cl/6445069
2012-08-21 11:18:16 +10:00
Dave Cheney
122a558f47 os: fix data race on Process.done
Fixes #3969.

R=dvyukov, r, alex.brainman, minux.ma
CC=golang-dev
https://golang.org/cl/6462081
2012-08-21 10:41:31 +10:00
Dmitriy Vyukov
922056d410 net: add TCP benchmarks
Current results on linux_amd64, 8 HT cores @2.4GHz:
BenchmarkTCPOneShot	   10000	    194037 ns/op
BenchmarkTCPOneShot-2	   20000	     93641 ns/op
BenchmarkTCPOneShot-4	   20000	     94039 ns/op
BenchmarkTCPOneShot-8	   20000	     94667 ns/op
BenchmarkTCPOneShot-16	   10000	    301924 ns/op
BenchmarkTCPOneShotTimeout	   10000	    193264 ns/op
BenchmarkTCPOneShotTimeout-2	   20000	     98247 ns/op
BenchmarkTCPOneShotTimeout-4	   20000	     94442 ns/op
BenchmarkTCPOneShotTimeout-8	   20000	     95297 ns/op
BenchmarkTCPOneShotTimeout-16	   10000	    307970 ns/op
BenchmarkTCPPersistent	   50000	     52050 ns/op
BenchmarkTCPPersistent-2	  100000	     29452 ns/op
BenchmarkTCPPersistent-4	  100000	     28823 ns/op
BenchmarkTCPPersistent-8	   50000	     30473 ns/op
BenchmarkTCPPersistent-16	   10000	    311777 ns/op
BenchmarkTCPPersistentTimeout	   50000	     32574 ns/op
BenchmarkTCPPersistentTimeout-2	   50000	     29723 ns/op
BenchmarkTCPPersistentTimeout-4	  100000	     28592 ns/op
BenchmarkTCPPersistentTimeout-8	  100000	     28997 ns/op
BenchmarkTCPPersistentTimeout-16	   10000	    314354 ns/op

R=golang-dev, alex.brainman, dave, mikioh.mikioh, r, iant, bradfitz, iant
CC=golang-dev
https://golang.org/cl/6458128
2012-08-20 21:27:52 +04:00
Shenghou Ma
b1532344ef cmd/ld: skip R_*_NONE relocations, fix Linux/386 build again
The last fix was wrong w.r.t C's operator precedence,
and it also failed to really skip the NONE relocation.

The offending R_386_NONE relocation is a absolute
relocation in section .eh_frame.

TBR=golang-dev
CC=golang-dev
https://golang.org/cl/6463058
2012-08-21 00:34:06 +08:00
Volker Dobler
db645a024d strconv: consistent parameter names for ParseUint
If ParseUint is like ParseInt it should have the same parameter
names, thus rename b to to base as in ParseInt's documentation.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6453152
2012-08-20 22:30:04 +10:00
Dmitriy Vyukov
20f6a8fdaf net/http: reduce mutex contention
benchmark                           old ns/op    new ns/op    delta
BenchmarkClientServerParallel          155909       154454   -0.93%
BenchmarkClientServerParallel-2         86012        82986   -3.52%
BenchmarkClientServerParallel-4         70211        55168  -21.43%
BenchmarkClientServerParallel-8         80755        47862  -40.73%
BenchmarkClientServerParallel-12        77753        51478  -33.79%
BenchmarkClientServerParallel-16        77920        50278  -35.47%
The benchmark is https://golang.org/cl/6441134
The machine is 2 x 4 HT cores (16 HW threads total).
Fixes #3946.
Now contention moves to net.pollServer.AddFD().

R=bradfitz
CC=bradfitz, dave, dsymonds, gobot, golang-dev, remyoudompheng
https://golang.org/cl/6454142
2012-08-20 13:28:27 +04:00
Marcel van Lohuizen
a8357f0160 exp/locale/collate/build: fixed bug that was exposed by experimenting
with table changes.
NOTE: there is no test for this, but 1) the code has now the same
control flow as scan in exp/locale/collate/contract.go, which is
tested and 2) Builder verifies the generated table so bugs in this
code are quickly and easily found (which is how this bug was discovered).

R=r
CC=golang-dev
https://golang.org/cl/6461082
2012-08-20 10:56:41 +02:00
Marcel van Lohuizen
98883c811a exp/locale/collate: let regtest generate its own collation table.
The main table will need to get a slightly different collation table as the one
used by regtest, as the regtest is based on the standard UCA DUCET, while
the locale-specific tables are all based on a CLDR root table.
This change allows changing the table without affecting the regression test.

R=r
CC=golang-dev
https://golang.org/cl/6453089
2012-08-20 10:56:19 +02:00
Marcel van Lohuizen
2845e5881f exp/locale/collate: changed default AlternateHandling to non-ignorable, the same
default as ICU.

R=r
CC=golang-dev
https://golang.org/cl/6445080
2012-08-20 10:56:06 +02:00
Marcel van Lohuizen
6918357031 exp/locale/collate: Added test flag to maketables tool for comparing newly
against previously generated tables.

R=r
CC=golang-dev
https://golang.org/cl/6441098
2012-08-20 10:55:40 +02:00
Nigel Tao
2b14a48d54 exp/html: make the parser manipulate the tokenizer via exported methods
instead of touching the tokenizer's internal state.

R=andybalholm
CC=golang-dev
https://golang.org/cl/6446153
2012-08-20 11:04:36 +10:00
Mikkel Krautz
67924c1b60 crypto/tls: explicitly require ExtKeyUsageClientAuth for client certs
If we aren't explicit about the KeyUsages, the verifier
will treat the certificate as a server certificate and require
it to have a ExtKeyUsageServerAuth key usage.

R=golang-dev
CC=golang-dev
https://golang.org/cl/6453148
2012-08-18 15:50:33 -07:00
Alex Brainman
58064a7cab pprof: make it work on windows again
- pprof is a perl script, so go command should invoke
  perl instead of trying to run pprof directly;
- pprof should use "go tool nm" unconditionally on windows,
  no one else can extract symbols from Go program;
- pprof should use "go tool nm" instead of "6nm".

Fixes #3879.

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6445082
2012-08-18 17:03:32 +10:00
Rob Pike
3ba0f6daf5 fmt: honor integer radix formats (%d etc.) for pointers
Before, pointers always appeared as 0x1234ABCD. This CL
keeps that as the default for %p and %v, but lets explicit
numeric verbs override the default.
Fixes #3936.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6441152
2012-08-17 16:12:25 -07:00
Rob Pike
deb53889c2 all: move defers to after error check to avoid nil indirection
Only affects some tests and none seem likely to be problematic, but let's fix them.
Fixes #3971.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6463060
2012-08-17 11:55:11 -07:00
Joel Sing
1b6557a0cf runtime: fix netbsd/386 stack pointer handling
When manipulating the stack pointer use the UESP register instead
of the ESP register, since the UESP register is the one that gets
restored from the machine context. Fixes broken tests on netbsd/386.

R=golang-dev, minux.ma, r, bsiegert
CC=golang-dev
https://golang.org/cl/6465054
2012-08-17 21:53:02 +10:00
Alex Brainman
2a642c34e5 misc/cgo/test: disable test on windows (attempt to fix windows build)
see issus 3358 for similar problem

R=golang-dev
CC=golang-dev, minux.ma
https://golang.org/cl/6464072
2012-08-17 14:15:01 +10:00
Shenghou Ma
93fac8859c cmd/ld: explicitly ignore R_*_NONE relocation to fix build
I don't know why this relocation is used.

R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6464070
2012-08-17 09:11:58 +08:00
Shenghou Ma
551d8b9ff5 cmd/go: new cgo build procedure
This CL adds a step to the build procedure for cgo programs. It uses 'ld -r'
to combine all gcc compiled object file and generate a relocatable object file
for our ld. Additionally, this linking step will combine some static linking
gcc library into the relocatable object file, so that we can use libgcc,
libmingwex and libmingw32 without problem.

   Fixes #3261.
   Fixes #1741.
   Added a testcase for linking in libgcc.

TODO:
1. still need to fix the INDIRECT_SYMBOL_LOCAL problem on Darwin/386.
2. still need to enable the libgcc test on Linux/ARM, because 5l can't deal
with thumb libgcc.

Tested on Darwin/amd64, Darwin/386, FreeBSD/amd64, FreeBSD/386, Linux/amd64,
Linux/386, Linux/ARM, Windows/amd64, Windows/386

R=iant, rsc, bradfitz, coldredlemur
CC=golang-dev
https://golang.org/cl/5822049
2012-08-17 03:42:34 +08:00
Daniel Morsing
b04c890a89 cmd/gc: Don't claim type assertion would help when it wont.
Fixes #3465.

R=golang-dev, rsc, remyoudompheng, iant
CC=golang-dev
https://golang.org/cl/6448097
2012-08-15 16:53:06 -07:00
Andrew Balholm
d624f0c922 exp/html: simplify testing code
Now that the parser passes all tests in the test suite,
it is no longer necessary to keep track of which tests
pass and which don't. So remove the testlogs directory
and the code that uses it.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6453124
2012-08-16 09:31:22 +10:00
Robert Griesemer
ace14d01bd text/scanner: report illegal hexadecimal numbers (bug fix)
R=r
CC=golang-dev
https://golang.org/cl/6450136
2012-08-15 11:09:34 -07:00
Joel Sing
2ab18f69a6 os/exec: disable additional file descriptor test on netbsd
This currently fails on NetBSD due to the cloned file descriptors
that result from opening /dev/urandom. Disable the additional checking
until this is investigated and properly fixed.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6443129
2012-08-16 02:06:21 +10:00
Joel Sing
b60d45f5b8 runtime: disable crash handler test on netbsd
Disable the crash handler test on NetBSD until I can figure out why
it triggers failures in later tests.

R=golang-dev, minux.ma
CC=golang-dev
https://golang.org/cl/6460090
2012-08-16 02:02:00 +10:00
Joel Sing
858bd05e2d net: implement netbsd sockoptip
Provide sockoptip for NetBSD, based on sockoptip for OpenBSD.

R=golang-dev, rsc, mikioh.mikioh, minux.ma
CC=golang-dev
https://golang.org/cl/6308053
2012-08-16 00:44:20 +10:00
Francisco Souza
34976b985a cmd/go: skipping relative paths on go test -i ./...
Fixes #3896.

R=rsc, rogpeppe, r
CC=golang-dev
https://golang.org/cl/6457075
2012-08-15 07:32:49 -07:00
Andrew Balholm
27cb1cbb2e exp/html: skip render and reparse on more tests that build badly-formed parse trees
All of the remaining tests that had as status of PARSE rather than PASS had
good reasons for not passing the render-and-reparse step: the correct parse tree is
badly formed, so when it is rendered out as HTML, the result doesn't parse into the
same tree. So add them to the list of tests where that step is skipped.

Also, I discovered that it is possible to end up with HTML elements (not just text)
inside a raw text element through reparenting. So change the rendering routines to
handle that situation as sensibly as possible (which still isn't very sensible, but
this is HTML5).

R=nigeltao
CC=golang-dev
https://golang.org/cl/6446137
2012-08-15 11:44:25 +10:00
Robert Hencke
16a82828a2 5l: trivial whitespace cleanup
R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/6446131
2012-08-15 10:32:44 +10:00
Robert Griesemer
3df0545a8b go/scanner: faster scanning
Optimize some common cases.

benchmark            old ns/op    new ns/op    delta
BenchmarkScanFile       718907       667960   -7.09%

benchmark             old MB/s     new MB/s  speedup
BenchmarkScanFile        23.03        25.51    1.11x

R=r
CC=golang-dev
https://golang.org/cl/6454150
2012-08-14 11:26:30 -07:00
Adam Langley
7fa3b9f7ea exp/proxy: remove package.
This package has moved to go.net.

R=golang-dev, minux.ma, r, dave
CC=golang-dev
https://golang.org/cl/6461056
2012-08-14 13:04:14 -04:00
Andrew Balholm
3ba25e76a7 exp/html: generate replacement for <isindex> correctly
When generating replacement elements for an <isindex> tag, the old
addSyntheticElement method was producing the wrong nesting. Replace
it with parseImpliedToken.

Pass the one remaining test in the test suite.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6453114
2012-08-14 09:53:10 +10:00
Dmitriy Vyukov
6d5eb61ae7 net: remove unused fields
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6454145
2012-08-14 01:57:24 +04:00
Dmitriy Vyukov
058149f153 runtime/pprof: fix comments
R=golang-dev, iant
CC=golang-dev
https://golang.org/cl/6460082
2012-08-14 01:51:42 +04:00
Andrew Balholm
aa9a81b1b0 exp/html: discard tags that are terminated by EOF instead of by '>'
If a tag doesn't have a closing '>', it isn't considered a tag;
it is just ignored and EOF is returned instead.

Pass one additional test in the test suite.

Change tokenizer tests to match correct behavior.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6454131
2012-08-13 12:07:44 +10:00
Robert Griesemer
a9d0ff6ead go/parser: exit early if source file does not contain text
Partial fix for issue 3943.

R=r
CC=golang-dev
https://golang.org/cl/6458115
2012-08-11 21:06:40 -07:00
Rob Pike
2253f67157 text/template/parse: fix bug handling /*/
Incorrect syntax for comment was erroneously accepted.
Fixes #3919.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6453105
2012-08-09 19:24:46 -07:00
Shenghou Ma
4f308edc86 runtime: use sched_getaffinity for runtime.NumCPU() on Linux
Fixes #3921.

R=iant
CC=golang-dev
https://golang.org/cl/6448132
2012-08-10 10:05:26 +08:00
Andrew Balholm
c5038c8593 exp/html: ignore self-closing flag except in SVG and MathML
In HTML content, having a self-closing tag is a parse error unless
the tag would be self-closing anyway (like <img>). The only place a
self-closing tag actually makes a difference is in XML-based foreign
content.

Pass 1 additional test.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6450109
2012-08-10 09:34:10 +10:00
Robert Griesemer
f597fa67c1 godoc: report error for directories with multiple packages
Fixes #3922.

R=rsc, adg
CC=golang-dev
https://golang.org/cl/6453094
2012-08-09 16:10:46 -07:00
Rémy Oudompheng
f087764abc go/build: correct shouldBuild bug reading whole contents of file.
It was caused by bytes.TrimSpace being able to return a nil
slice.

Fixes #3914.

R=golang-dev, r
CC=golang-dev, remy
https://golang.org/cl/6458091
2012-08-09 23:22:51 +02:00
Robert Griesemer
0f2529317f exp/types: add more import tests
Also simplified parsing of interface
types since they can only contain
methods (and no embedded interfaces)
in the export data.

R=rsc
CC=golang-dev
https://golang.org/cl/6446084
2012-08-09 11:55:00 -07:00
Shenghou Ma
20bf1a94e1 testing: add Verbose() to expose whether -test.v is set
Fixes #3350.

R=golang-dev, adg, r, fullung
CC=golang-dev
https://golang.org/cl/6445092
2012-08-09 23:41:09 +08:00
Rob Pike
18c378c259 text/template: add 'nil' as a keyword in the language
The keyword reprents an untyped nil and is useful for
passing nil values to methods and functions. The
nil will be promoted to the appropriate type when
used; if a type cannot be assigned, an error results.

R=rsc, dsymonds
CC=golang-dev
https://golang.org/cl/6459056
2012-08-08 20:02:19 -07:00
Shenghou Ma
af92b29fe6 cmd/5l: add PT_PAX_FLAGS ELF header
Although I don't use PAX enabled ARM kernels, PAX
does have support for ARM, so we're better off add
PT_PAX_FLAGS now in case people use PAX kernels.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6453092
2012-08-09 08:47:43 +08:00
Andrew Balholm
22e918f5d6 exp/html: ignore </html> in afterBodyIM when parsing a fragment
Pass 1 additional test.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6454124
2012-08-09 10:19:25 +10:00
Andrew Balholm
e4a50195c3 exp/html: when ignoring <textarea> tag, switch tokenizer out of raw text mode
Pass 1 additional test.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6459060
2012-08-09 09:43:10 +10:00
Charles L. Dorian
a5c4e0fa2a math: update definition of NaN in assembly language files
R=rsc, minux.ma, golang-dev, nigeltao
CC=golang-dev
https://golang.org/cl/6461047
2012-08-09 09:40:05 +10:00
Rob Pike
c48b77b1b5 all: make Unicode surrogate halves illegal as UTF-8
Surrogate halves are part of UTF-16 and should never appear in UTF-8.
(The rune that two combined halves represent in UTF-16 should
be encoded directly.)

Encoding: encode as RuneError.
Decoding: convert to RuneError, consume one byte.

This requires changing:
        package unicode/utf8
        runtime for range over string
Also added utf8.ValidRune and fixed bug in utf.RuneLen.

Fixes #3927.

R=golang-dev, rsc, bsiegert
CC=golang-dev
https://golang.org/cl/6458099
2012-08-08 14:01:23 -07:00
Andrew Gerrand
4939b7b065 io: amend ReaderFrom doc as per r's comment
R=r
CC=golang-dev
https://golang.org/cl/6458097
2012-08-08 15:41:47 +10:00
Yves Junqueira
4230dd4c6c crypto/rand: Example for Read.
R=adg, remyoudompheng, rsc, r
CC=golang-dev
https://golang.org/cl/6457085
2012-08-08 12:04:54 +10:00
Andrew Balholm
fca45719a4 exp/html: foster-parent text correctly
If a table contained whitespace, text nodes would not get foster parented
correctly.

Pass 1 additional test.

R=nigeltao
CC=golang-dev
https://golang.org/cl/6459054
2012-08-08 10:00:57 +10:00
Nigel Tao
5f7bec693d image/jpeg: send a correct Start Of Scan (SOS) header.
Section B.2.3 of http://www.w3.org/Graphics/JPEG/itu-t81.pdf discusses
the End of spectral selection (Se) byte.

Apparently many JPEG decoders ignore the Se byte (or let it through
with a warning), but some configurations reject them. For example,
http://download.blender.org/source/chest/blender_2.03_tree/jpeg/jcmaster.c
has these lines:

if (Ss != 0 || Se != DCTSIZE2-1 || Ah != 0 || Al != 0)
  ERREXIT1(cinfo, JERR_BAD_PROG_SCRIPT, scanno);

Fixes #3916.

R=r
CC=golang-dev
https://golang.org/cl/6459052
2012-08-08 09:57:09 +10:00
Shenghou Ma
0157c72d13 runtime: inline several float64 routines to speed up complex128 division
Depends on CL 6197045.

Result obtained on Core i7 620M, Darwin/amd64:
benchmark                       old ns/op    new ns/op    delta
BenchmarkComplex128DivNormal           57           28  -50.78%
BenchmarkComplex128DivNisNaN           49           15  -68.90%
BenchmarkComplex128DivDisNaN           49           15  -67.88%
BenchmarkComplex128DivNisInf           40           12  -68.50%
BenchmarkComplex128DivDisInf           33           13  -61.06%

Result obtained on Core i7 620M, Darwin/386:
benchmark                       old ns/op    new ns/op    delta
BenchmarkComplex128DivNormal           89           50  -44.05%
BenchmarkComplex128DivNisNaN          307          802  +161.24%
BenchmarkComplex128DivDisNaN          309          788  +155.02%
BenchmarkComplex128DivNisInf          278          237  -14.75%
BenchmarkComplex128DivDisInf           46           22  -52.46%

Result obtained on 700MHz OMAP4460, Linux/ARM:
benchmark                       old ns/op    new ns/op    delta
BenchmarkComplex128DivNormal         1557          465  -70.13%
BenchmarkComplex128DivNisNaN         1443          220  -84.75%
BenchmarkComplex128DivDisNaN         1481          218  -85.28%
BenchmarkComplex128DivNisInf          952          216  -77.31%
BenchmarkComplex128DivDisInf          861          231  -73.17%

The 386 version has a performance regression, but as we have
decided to use SSE2 instead of x87 FPU for 386 too (issue 3912),
I won't address this issue.

R=dsymonds, mchaten, iant, dave, mtj, rsc, r
CC=golang-dev
https://golang.org/cl/6024045
2012-08-07 23:45:50 +08:00