Commits · 80790ab740eb8aa11d07624c2e9cf1eab834992f · go / golang

07 May, 2012 3 commits

C: Jeremy Ellington (Google CLA) · 80790ab7
Sameer Ajmani authored May 07, 2012
```
R=golang-dev, rsc
CC=golang-dev, jme
https://golang.org/cl/6197058
```
80790ab7

exp/locale/collate: from the regression test we derive that the spec · 56a76c88

Marcel van Lohuizen authored May 07, 2012

dictates a CJK rune is only part of a certain specified range if it
is explicitly defined in the Unicode Codepoint Database.
Fixed the code and some of the tests accordingly.

R=r
CC=golang-dev
https://golang.org/cl/6160044

56a76c88

exp/norm: It is important that the unicode versions of the various packages align. · 18aded7a
Marcel van Lohuizen authored May 07, 2012
```
Replace hard-coded version strings with unicode.Version.

R=r, r
CC=golang-dev
https://golang.org/cl/6163045
```
18aded7a

04 May, 2012 15 commits

test: add bug438, a valid test case that gccgo used to fail to compile · 6c8447d4
Ian Lance Taylor authored May 04, 2012
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6196047
```
6c8447d4

sync/atomic: fix 64-bit atomic cas for Linux/ARM · 4d724f4c

Shenghou Ma authored May 04, 2012

    This is a follow-up to CL 5978051.
    Use kernel cas64 helper if we can, fallback to LDREXD/STREXD if
    we are on ARMv6 or higher, and to lock-emulated cas64 if on ARMv5.
    A future CL will fix {Add,Load,Store}{Int,Uint}64 and issue 3331.

R=bradfitz, rsc
CC=golang-dev
https://golang.org/cl/6034048

4d724f4c

runtime: get per-process random number from auxv for hash table · a642ca49

Shenghou Ma authored May 04, 2012

Decode AT_RANDOM, AT_HWCAP, and AT_PLATFORM.
This CL only make use of AT_RANDOM, but future CLs will make use of the others.

R=dave, rsc
CC=golang-dev
https://golang.org/cl/5978051

a642ca49

cmd/cgo, cmd/cc, cmd/ld: detect dynamic linker automatically · dac4c3ee

Shenghou Ma authored May 04, 2012

Some newer Linux distributions (Ubuntu ARM at least) use a new multiarch
directory organization, where dynamic linker is no longer in the hardcoded
path in our linker.
For example, Ubuntu 12.04 ARM hardfloat places its dynamic linker at
/lib/arm-linux-gnueabihf/ld-linux.so.3

Ref: http://lackof.org/taggart/hacking/multiarch/

Also, to support Debian GNU/kFreeBSD as a FreeBSD variant, we need this capability, so it's part of issue 3533.

This CL add a new pragma (#pragma dynlinker "path") to cc.

R=iant, rsc
CC=golang-dev
https://golang.org/cl/6086043

dac4c3ee

runtime: fix c compiler warning · a29304bf
Shenghou Ma authored May 04, 2012
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6185047
```
a29304bf

runtime, misc/cgo/test: fix build for Linux/ARM · 018bcc35

Shenghou Ma authored May 04, 2012

1. In CL 5989057, I made a mistake in the last minute change.
"MOVW.W R4, -4(SP)" should really be "MOVW.W R4, -4(R13)",
as 5l will rewrite offset for SP.
2. misc/cgo/test/issue1560.go tests for parallel sleep of 1s,
but on ARM, the deadline is frequently missed, so change sleep
time to 2s on ARM.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6202043

018bcc35

math/big: fix superpolynomial complexity in Karatsuba algorithm. · 018c60bd

Rémy Oudompheng authored May 04, 2012

benchmark                     old ns/op    new ns/op    delta
BenchmarkExp3Power0x10              732          734   +0.27%
BenchmarkExp3Power0x40              834          836   +0.24%
BenchmarkExp3Power0x100            1600         1579   -1.31%
BenchmarkExp3Power0x400            3478         3417   -1.75%
BenchmarkExp3Power0x1000          19388        19229   -0.82%
BenchmarkExp3Power0x4000         160274       156881   -2.12%
BenchmarkExp3Power0x10000       1552050      1372058  -11.60%
BenchmarkExp3Power0x40000      27328710     15216920  -44.32%
BenchmarkExp3Power0x100000    612349000    131407100  -78.54%
BenchmarkExp3Power0x400000  44073524000   1122195000  -97.45%

R=golang-dev, mtj, gri, rsc
CC=golang-dev, remy
https://golang.org/cl/6176043

018c60bd

pkg/runtime: Plan 9 signal handling in Go · ccdca2cd

Akshat Kumar authored May 04, 2012

This adds proper note handling for Plan 9,
and fixes the issue of properly killing go procs.
Without this change, the first go proc that dies
(using runtime·exit()) would kill all the running
go procs. Proper signal handling is needed.

R=golang-dev, ality, rminnich, rsc
CC=golang-dev, john, mirtchovski
https://golang.org/cl/5617048

ccdca2cd

syscall: remove the Signal type on Plan 9 · fe5005f7

Anthony Martin authored May 04, 2012

Instead use a new type, "Note", whose underlying
type is just a string.  This change allows us to
remove the exported os.Plan9Note type.

R=bradfitz, seed, rsc
CC=golang-dev
https://golang.org/cl/6015046

fe5005f7

go/build: cgo is supported on Linux/ARM · 2bed8a7e

Shenghou Ma authored May 04, 2012

        Last Part of CL 5601044 (cgo: Linux/ARM support)
        Fixes #1880.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5988057

2bed8a7e

cmd/go: cgo for Linux/ARM · e7a0a759

Shenghou Ma authored May 04, 2012

        Part 4 of CL 5601044 (cgo: Linux/ARM support)

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5989058

e7a0a759

cmd/cgo: support Linux/ARM · 9602dd5e

Shenghou Ma authored May 04, 2012

        Part 3 of CL 5601044 (cgo: Linux/ARM support)

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5991066

9602dd5e

runtime: cgo support for Linux/ARM · 5cffce61

Shenghou Ma authored May 04, 2012

        Part 2 of CL 5601044 (cgo: Linux/ARM support)

R=dave, rsc
CC=golang-dev
https://golang.org/cl/5989057

5cffce61

cmd/5l, cmd/ld: dynamic linking library support · 452a9e45

Shenghou Ma authored May 04, 2012

        Part 1 of CL 5601044 (cgo: Linux/ARM support)
        Limitation: doesn't support thumb library yet.

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/5991065

452a9e45

misc/dashboard/codereview: remove transitional code. · c44a22cc

David Symonds authored May 04, 2012

All current CLs have subject lines, so we don't need to check any more.

R=golang-dev, bradfitz
CC=golang-dev
https://golang.org/cl/6196044

c44a22cc

03 May, 2012 7 commits
- encoding/json: Fix panic when trying to unmarshal the empty string into an integer · 3fab2a97
  Michael Chaten authored May 03, 2012
```
Fixes #3450.

R=rsc, bradfitz
CC=golang-dev
https://golang.org/cl/6035050
```
  3fab2a97
- syscall: add Termios support on darwin · 61060acd
  Francisco Souza authored May 03, 2012
```
Update #3316.

R=dave, kevlar, devon.odell, rsc, minux.ma
CC=golang-dev
https://golang.org/cl/6063053
```
  61060acd
- test: add bug437, a test that used to fail with gccgo at link time · 890be5ce
  Ian Lance Taylor authored May 03, 2012
```
Updates #3391.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6177045
```
  890be5ce
- crypto/x509: fix panic when using unavailable hash function. · c8e1946f
  Adam Langley authored May 03, 2012
```
crypto.Hash.New() changed to panicking when the hash function isn't
linked in, but crypto/x509 still expects it to return nil.

R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6175047
```
  c8e1946f
- cmd/5c, cmd/5a, cmd/5l: ARM support for PREFETCH built-in · 278d4a58
  Shenghou Ma authored May 03, 2012
```
R=rsc
CC=golang-dev
https://golang.org/cl/6174049
```
  278d4a58
- test: add bug436, valid code that crashed gccgo · df644489
  Ian Lance Taylor authored May 03, 2012
```
R=golang-dev, bsiegert, rsc
CC=golang-dev
https://golang.org/cl/6158046
```
  df644489
- cmd/dist: remove stray src/pkg/runtime/z* when cleaning · 52ec4aa2
  Shenghou Ma authored May 03, 2012
```
R=golang-dev, bradfitz, dave, rsc, lstoakes, rsc
CC=golang-dev
https://golang.org/cl/6180044
```
  52ec4aa2
02 May, 2012 10 commits

misc/dashboard/codereview: add copyright notices to Go files · 7a77645a
Andrew Gerrand authored May 02, 2012
```
R=golang-dev, dsymonds
CC=golang-dev
https://golang.org/cl/6177043
```
7a77645a

cmd/cc: add PREFETCH built-in (like SET, USED) · d42495aa

Russ Cox authored May 02, 2012

This makes it possible to inline the prefetch of upcoming
memory addresses during garbage collection, instead of
needing to flush registers, make a function call, and
reload registers.  On garbage collection-heavy workloads,
this results in a 5% speedup.

Fixes #3493.

R=dvyukov, ken, r, dave
CC=golang-dev
https://golang.org/cl/5990066

d42495aa

exp/locale/collate: fixed two bugs uncovered by regression tests. · 10838165

Marcel van Lohuizen authored May 02, 2012

The first bug was that tertiary ignorables had the same colElem as
implicit colElems, yielding unexpected results. The current encoding
ensures that a non-implicit colElem is never 0.  This fix uncovered
another bug of the trie that indexed incorrectly into the null block.
This was caused by an unfinished optimization that would avoid the
need to max out the most-significant bits of continuation bytes.
This bug was also present in the trie used in exp/norm and has been
fixed there as well. The appearence of the bug was rare, as the lower
blocks happened to be nearly nil.

R=r
CC=golang-dev
https://golang.org/cl/6127070

10838165

cmd/gc: test for issue 3552 · 81d96215
Luuk van Dijk authored May 02, 2012
```
R=rsc
CC=golang-dev
https://golang.org/cl/6128051
```
81d96215
runtime: avoid unnecessary zeroization of huge memory blocks · c1c851bb
Dmitriy Vyukov authored May 02, 2012
```
+move zeroization out of the heap mutex

R=golang-dev, iant, rsc
CC=golang-dev
https://golang.org/cl/6094050
```
c1c851bb
os/signal: run windows TestCtrlBreak during build · 0d55d983
Alex Brainman authored May 02, 2012
```
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/6136054
```
0d55d983
os: conform to Go 1 API on Plan 9 · 90626864
Anthony Martin authored May 02, 2012
```
R=golang-dev, r, bradfitz, r
CC=golang-dev
https://golang.org/cl/6117062
```
90626864
build: dist-based build for Plan 9 · 38590329
Anthony Martin authored May 02, 2012
```
R=rsc, iant, iant, seed
CC=golang-dev
https://golang.org/cl/5608059
```
38590329
misc/dashboard/codereview: LGTM favicon · ce30769c
Rob Pike authored May 02, 2012
```
R=dsymonds
CC=golang-dev
https://golang.org/cl/6158043
```
ce30769c

bytes: add assembly version of Equal for ARM · d472d3fa

Dave Cheney authored May 02, 2012

BenchmarkEqual32                       662          159  -75.98%
BenchmarkEqual4K                     76545        13719  -82.08%
BenchmarkEqual4M                  90136700     23588870  -73.83%
BenchmarkEqual64M               2147483647   1419616000  -42.63%

BenchmarkEqual32                     48.32       201.15    4.16x
BenchmarkEqual4K                     53.51       298.56    5.58x
BenchmarkEqual4M                     46.53       177.81    3.82x
BenchmarkEqual64M                    27.12        47.27    1.74x

R=golang-dev, qyzhai, minux.ma, rsc, iant, nigeltao
CC=golang-dev
https://golang.org/cl/6118049

d472d3fa

01 May, 2012 5 commits
- cgo: rename C names for Go types to avoid conflicting with package · 82e30c68
  Ian Lance Taylor authored May 01, 2012
```
Fixes #3371.

R=rsc, bsiegert, r, mtj, iant
CC=golang-dev
https://golang.org/cl/6131060
```
  82e30c68
- misc/dashboard/codereview: preserve CL ordering. · cc9a5c3b
  David Symonds authored May 01, 2012
```
R=r
CC=golang-dev
https://golang.org/cl/6136056
```
  cc9a5c3b
- compress/flate: add a copy overrun test. · 86a91539
  Nigel Tao authored May 01, 2012
```
R=rsc, r
CC=golang-dev
https://golang.org/cl/6143043
```
  86a91539
- misc/dashboard/codereview: de-dup LGTMs. · 83aa040c
  David Symonds authored May 01, 2012
```
R=golang-dev, r
CC=golang-dev
https://golang.org/cl/6127066
```
  83aa040c
- encoding/json: don't match field name if a JSON struct tag is present. · c3c8e35a
  David Symonds authored May 01, 2012
```
Fixes #3566.

R=rsc
CC=golang-dev
https://golang.org/cl/6139048
```
  c3c8e35a