Commits · 4f12cc08132f3e5d2ba4b756c91d88c2e58a73b1 · go / golang

11 Apr, 2016 10 commits

cmd/link: symbol generation optimizations · 4f12cc08

Shahar Kohanim authored Apr 07, 2016

After making dwarf generation backed by LSyms there was a performance regression
of about 10%. These changes make on the fly symbol generation faster and
are meant to help mitigate that.

name       old secs    new secs    delta
LinkCmdGo   0.55 ± 9%   0.53 ± 8%  -4.42%   (p=0.000 n=100+99)

name       old MaxRSS  new MaxRSS  delta
LinkCmdGo   152k ± 6%   149k ± 3%  -1.99%    (p=0.000 n=99+97)

Change-Id: Iacca3ec924ce401aa83126bc0b10fe89bedf0ba6
Reviewed-on: https://go-review.googlesource.com/21733
Run-TryBot: Shahar Kohanim <skohanim@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: David Crawshaw <crawshaw@golang.org>

4f12cc08

net/http/pprof: accept fractional seconds in trace handler · b0eeb8b0

Russ Cox authored Apr 03, 2016

For heavily loaded servers, even 1 second of trace is too large
to process with the trace viewer; using a float64 here allows
fetching /debug/pprof/trace?seconds=0.1.

Change-Id: I286c07abf04f9c1fe594b0e26799bf37f5c734db
Reviewed-on: https://go-review.googlesource.com/21455Reviewed-by: Austin Clements <austin@google.com>

b0eeb8b0

runtime: merge lfstack_amd64.go into lfstack_64bit.go · 720c4c01

Dave Cheney authored Apr 08, 2016

Merge the amd64 lfstack implementation into the general 64 bit
implementation.

Change-Id: Id9ed61b90d2e3bc3b0246294c03eb2c92803b6ca
Reviewed-on: https://go-review.googlesource.com/21707
Run-TryBot: Dave Cheney <dave@cheney.net>
Reviewed-by: Minux Ma <minux@golang.org>

720c4c01

cmd/go: document that -run=^$ skips all tests · 20375f64

Andrew Gerrand authored Apr 11, 2016

Change-Id: I7bbdd9600e0d9a647aeea16f1ae9e42a4e0cf44d
Reviewed-on: https://go-review.googlesource.com/21823Reviewed-by: Rob Pike <r@golang.org>

20375f64

cmd/compile/internal/gc: refactor cgen_div · 2a415820

Michael Munday authored Apr 11, 2016

This commit adds two new functions to cgen.go: hasHMUL64 and
hasRROTC64. These are used to determine whether or not an
architecture supports the instructions needed to perform an
optimization in cgen_div.

This commit should not affect existing architectures (although it
does add s390x to the new functions). However, since most
architectures support HMUL the hasHMUL64 function could be
modified to enable most of the optimizations in cgen_div on those
platforms.

Change-Id: I33bf329ddeb6cf2954bd17b7c161012de352fb62
Reviewed-on: https://go-review.googlesource.com/21775Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

2a415820

doc: document Go 1.6.1 and Go 1.5.4 · a00ad5f4

Andrew Gerrand authored Apr 11, 2016

Change-Id: Icb9e947a43fb87fbfe0655b09e0d7e8f61825aeb
Reviewed-on: https://go-review.googlesource.com/21825Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

a00ad5f4

runtime: remove remaining references to TheChar · ba09d06e

Jeremy Jackins authored Apr 07, 2016

After mdempsky's recent changes, these are the only references to
"TheChar" left in the Go tree. Without the context, and without
knowing the history, this is confusing.

Also rename sys.TheGoos and sys.TheGoarch to sys.GOOS
and sys.GOARCH.

Also change the heap dump format to include sys.GOARCH
rather than TheChar, which is no longer a concept.

Updates #15169 (changes heapdump format)

Change-Id: I3e99eeeae00ed55d7d01e6ed503d958c6e931dca
Reviewed-on: https://go-review.googlesource.com/21647Reviewed-by: Matthew Dempsky <mdempsky@google.com>

ba09d06e

net/http: set the Request context for incoming server requests · 1faa8869

Brad Fitzpatrick authored Apr 06, 2016

Updates #13021
Updates #15224

Change-Id: Ia3cd608bb887fcfd8d81b035fa57bd5eb8edf09b
Reviewed-on: https://go-review.googlesource.com/21810Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

1faa8869

context: document that WithValue's key must be comparable · bd724976

Brad Fitzpatrick authored Apr 10, 2016

Also, check it and explode earlier, rather than cryptic failures later.

Change-Id: I319a425f60e2bc9d005a187fbdbd153faa96411c
Reviewed-on: https://go-review.googlesource.com/21799Reviewed-by: Andrew Gerrand <adg@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Minux Ma <minux@golang.org>

bd724976

cmd/vet: refresh command for updating whitelist data. · e6a8dace

David Symonds authored Apr 11, 2016

This excludes internal and testdata packages, as well as func types.

No new whitelist entries were found.

Change-Id: Ie7d42ce0a235394e4bcabf09e155726a35cd2d3d
Reviewed-on: https://go-review.googlesource.com/21822Reviewed-by: Rob Pike <r@golang.org>

e6a8dace

10 Apr, 2016 14 commits

runtime: speed up makeslice by avoiding divisions · ad7448fe

Martin Möhrmann authored Apr 10, 2016

Only compute the number of maximum allowed elements per slice once.

name         old time/op  new time/op  delta
MakeSlice-2  55.5ns ± 1%  45.6ns ± 2%  -17.88%  (p=0.000 n=99+100)

Change-Id: I951feffda5d11910a75e55d7e978d306d14da2c5
Reviewed-on: https://go-review.googlesource.com/21801
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

ad7448fe

cmd/go: remove special case that puts godoc in $GOROOT/bin · 5b3e5766

Andrew Gerrand authored Apr 08, 2016

Updates golang/go#15106

Change-Id: I4214b841d63bb7e9c3c5ede2abe21a8a68f06c41
Reviewed-on: https://go-review.googlesource.com/21701Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

5b3e5766

text/template: emit field error over nil pointer error where appropriate · 0fd270ab

Andrew Gerrand authored Apr 08, 2016

When evaluating "{{.MissingField}}" on a nil *T, Exec returns
"can't evaluate field MissingField in type *T" instead of
"nil pointer evaluating *T.MissingField".

Fixes golang/go#15125

Change-Id: I6e73f61b8a72c694179c1f8cdc808766c90b6f57
Reviewed-on: https://go-review.googlesource.com/21705Reviewed-by: Rob Pike <r@golang.org>

0fd270ab

cmd/compile: regalloc enforces 2-address instructions · 0004f34c

Keith Randall authored Apr 10, 2016

Instead of being a hint, resultInArg0 is now enforced by regalloc.
This allows us to delete all the code from amd64/ssa.go which
deals with converting from a semantically three-address instruction
into some copies plus a two-address instruction.

Change-Id: Id4f39a80be4b678718bfd42a229f9094ab6ecd7c
Reviewed-on: https://go-review.googlesource.com/21816Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>

0004f34c

cmd/compile: avoid a spill in append fast path · 6b33b0e9

Josh Bleecher Snyder authored Apr 10, 2016

Instead of spilling newlen, recalculate it.
This removes a spill from the fast path,
at the cost of a cheap recalculation
on the (rare) growth path.
This uses 8 bytes less of stack space.
It generates two more bytes of code,
but that is due to suboptimal register allocation;
see far below.

Runtime append microbenchmarks are all over the map,
presumably due to incidental code movement.

Sample code:

func s(b []byte) []byte {
	b = append(b, 1, 2, 3)
	return b
}

Before:

"".s t=1 size=160 args=0x30 locals=0x48
	0x0000 00000 (append.go:8)	TEXT	"".s(SB), $72-48
	0x0000 00000 (append.go:8)	MOVQ	(TLS), CX
	0x0009 00009 (append.go:8)	CMPQ	SP, 16(CX)
	0x000d 00013 (append.go:8)	JLS	149
	0x0013 00019 (append.go:8)	SUBQ	$72, SP
	0x0017 00023 (append.go:8)	FUNCDATA	$0, gclocals·6432f8c6a0d23fa7bee6c5d96f21a92a(SB)
	0x0017 00023 (append.go:8)	FUNCDATA	$1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
	0x0017 00023 (append.go:9)	MOVQ	"".b+88(FP), CX
	0x001c 00028 (append.go:9)	LEAQ	3(CX), DX
	0x0020 00032 (append.go:9)	MOVQ	DX, "".autotmp_0+64(SP)
	0x0025 00037 (append.go:9)	MOVQ	"".b+96(FP), BX
	0x002a 00042 (append.go:9)	CMPQ	DX, BX
	0x002d 00045 (append.go:9)	JGT	$0, 86
	0x002f 00047 (append.go:8)	MOVQ	"".b+80(FP), AX
	0x0034 00052 (append.go:9)	MOVB	$1, (AX)(CX*1)
	0x0038 00056 (append.go:9)	MOVB	$2, 1(AX)(CX*1)
	0x003d 00061 (append.go:9)	MOVB	$3, 2(AX)(CX*1)
	0x0042 00066 (append.go:10)	MOVQ	AX, "".~r1+104(FP)
	0x0047 00071 (append.go:10)	MOVQ	DX, "".~r1+112(FP)
	0x004c 00076 (append.go:10)	MOVQ	BX, "".~r1+120(FP)
	0x0051 00081 (append.go:10)	ADDQ	$72, SP
	0x0055 00085 (append.go:10)	RET
	0x0056 00086 (append.go:9)	LEAQ	type.[]uint8(SB), AX
	0x005d 00093 (append.go:9)	MOVQ	AX, (SP)
	0x0061 00097 (append.go:9)	MOVQ	"".b+80(FP), BP
	0x0066 00102 (append.go:9)	MOVQ	BP, 8(SP)
	0x006b 00107 (append.go:9)	MOVQ	CX, 16(SP)
	0x0070 00112 (append.go:9)	MOVQ	BX, 24(SP)
	0x0075 00117 (append.go:9)	MOVQ	DX, 32(SP)
	0x007a 00122 (append.go:9)	PCDATA	$0, $0
	0x007a 00122 (append.go:9)	CALL	runtime.growslice(SB)
	0x007f 00127 (append.go:9)	MOVQ	40(SP), AX
	0x0084 00132 (append.go:9)	MOVQ	56(SP), BX
	0x0089 00137 (append.go:8)	MOVQ	"".b+88(FP), CX
	0x008e 00142 (append.go:9)	MOVQ	"".autotmp_0+64(SP), DX
	0x0093 00147 (append.go:9)	JMP	52
	0x0095 00149 (append.go:9)	NOP
	0x0095 00149 (append.go:8)	CALL	runtime.morestack_noctxt(SB)
	0x009a 00154 (append.go:8)	JMP	0

After:

"".s t=1 size=176 args=0x30 locals=0x40
	0x0000 00000 (append.go:8)	TEXT	"".s(SB), $64-48
	0x0000 00000 (append.go:8)	MOVQ	(TLS), CX
	0x0009 00009 (append.go:8)	CMPQ	SP, 16(CX)
	0x000d 00013 (append.go:8)	JLS	151
	0x0013 00019 (append.go:8)	SUBQ	$64, SP
	0x0017 00023 (append.go:8)	FUNCDATA	$0, gclocals·6432f8c6a0d23fa7bee6c5d96f21a92a(SB)
	0x0017 00023 (append.go:8)	FUNCDATA	$1, gclocals·33cdeccccebe80329f1fdbee7f5874cb(SB)
	0x0017 00023 (append.go:9)	MOVQ	"".b+80(FP), CX
	0x001c 00028 (append.go:9)	LEAQ	3(CX), DX
	0x0020 00032 (append.go:9)	MOVQ	"".b+88(FP), BX
	0x0025 00037 (append.go:9)	CMPQ	DX, BX
	0x0028 00040 (append.go:9)	JGT	$0, 81
	0x002a 00042 (append.go:8)	MOVQ	"".b+72(FP), AX
	0x002f 00047 (append.go:9)	MOVB	$1, (AX)(CX*1)
	0x0033 00051 (append.go:9)	MOVB	$2, 1(AX)(CX*1)
	0x0038 00056 (append.go:9)	MOVB	$3, 2(AX)(CX*1)
	0x003d 00061 (append.go:10)	MOVQ	AX, "".~r1+96(FP)
	0x0042 00066 (append.go:10)	MOVQ	DX, "".~r1+104(FP)
	0x0047 00071 (append.go:10)	MOVQ	BX, "".~r1+112(FP)
	0x004c 00076 (append.go:10)	ADDQ	$64, SP
	0x0050 00080 (append.go:10)	RET
	0x0051 00081 (append.go:9)	LEAQ	type.[]uint8(SB), AX
	0x0058 00088 (append.go:9)	MOVQ	AX, (SP)
	0x005c 00092 (append.go:9)	MOVQ	"".b+72(FP), BP
	0x0061 00097 (append.go:9)	MOVQ	BP, 8(SP)
	0x0066 00102 (append.go:9)	MOVQ	CX, 16(SP)
	0x006b 00107 (append.go:9)	MOVQ	BX, 24(SP)
	0x0070 00112 (append.go:9)	MOVQ	DX, 32(SP)
	0x0075 00117 (append.go:9)	PCDATA	$0, $0
	0x0075 00117 (append.go:9)	CALL	runtime.growslice(SB)
	0x007a 00122 (append.go:9)	MOVQ	40(SP), AX
	0x007f 00127 (append.go:9)	MOVQ	48(SP), CX
	0x0084 00132 (append.go:9)	MOVQ	56(SP), BX
	0x0089 00137 (append.go:9)	ADDQ	$3, CX
	0x008d 00141 (append.go:9)	MOVQ	CX, DX
	0x0090 00144 (append.go:8)	MOVQ	"".b+80(FP), CX
	0x0095 00149 (append.go:9)	JMP	47
	0x0097 00151 (append.go:9)	NOP
	0x0097 00151 (append.go:8)	CALL	runtime.morestack_noctxt(SB)
	0x009c 00156 (append.go:8)	JMP	0

Observe that in the following sequence,
we should use DX directly instead of using
CX as a temporary register, which would make
the new code a strict improvement on the old:

	0x007f 00127 (append.go:9)	MOVQ	48(SP), CX
	0x0084 00132 (append.go:9)	MOVQ	56(SP), BX
	0x0089 00137 (append.go:9)	ADDQ	$3, CX
	0x008d 00141 (append.go:9)	MOVQ	CX, DX
	0x0090 00144 (append.go:8)	MOVQ	"".b+80(FP), CX

Change-Id: I4ee50b18fa53865901d2d7f86c2cbb54c6fa6924
Reviewed-on: https://go-review.googlesource.com/21812
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>

6b33b0e9

runtime: avoid unnecessary map iteration write barrier · 974c201f

Josh Bleecher Snyder authored Apr 10, 2016

Update #14921

Change-Id: I5c5816d0193757bf7465b1e09c27ca06897df4bf
Reviewed-on: https://go-review.googlesource.com/21814
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>

974c201f

html: fix typo in UnescapeString string docs · a44c4256

Brad Fitzpatrick authored Apr 10, 2016

Fixes #15221

Change-Id: I9e927a2f604213338b4572f1a32d0247c58bdc60
Reviewed-on: https://go-review.googlesource.com/21798Reviewed-by: Ian Lance Taylor <iant@golang.org>

a44c4256

compress/flate: improve short writer error test · a56f5a03

Klaus Post authored Apr 10, 2016

This improves the short version of the writer test.

First of all, it has a much quicker setup. Previously that
could take up towards 0.5 second.

Secondly, it will test all compression levels in short mode as well.

Execution time is 1.7s/0.03s for normal/short mode.

Change-Id: I275a21f712daff6f7125cc6a493415e86439cb19
Reviewed-on: https://go-review.googlesource.com/21800Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

a56f5a03

compress/flate: eliminate most common bounds checks · f20b1809

Klaus Post authored Apr 10, 2016

This uses the SSA compiler to eliminate various unneeded bounds
checks in loops and various lookups.

This fixes the low hanging fruit, without any major code changes.

name old time/op new time/op delta
EncodeDigitsHuffman1e4-8 49.9µs ± 1% 48.1µs ± 1% -3.74% (p=0.000 n=10+9)
EncodeDigitsHuffman1e5-8 476µs ± 1% 458µs ± 1% -3.58% (p=0.000 n=10+10)
EncodeDigitsHuffman1e6-8 4.80ms ± 2% 4.56ms ± 1% -5.07% (p=0.000 n=10+9)
EncodeDigitsSpeed1e4-8 305µs ± 3% 290µs ± 2% -5.03% (p=0.000 n=10+9)
EncodeDigitsSpeed1e5-8 3.67ms ± 2% 3.49ms ± 2% -4.78% (p=0.000 n=9+10)
EncodeDigitsSpeed1e6-8 38.3ms ± 2% 35.8ms ± 1% -6.58% (p=0.000 n=9+10)
EncodeDigitsDefault1e4-8 361µs ± 2% 346µs ± 3% -4.12% (p=0.000 n=10+9)
EncodeDigitsDefault1e5-8 5.24ms ± 2% 4.96ms ± 3% -5.38% (p=0.000 n=10+10)
EncodeDigitsDefault1e6-8 56.5ms ± 3% 52.2ms ± 2% -7.68% (p=0.000 n=10+10)
EncodeDigitsCompress1e4-8 362µs ± 2% 343µs ± 1% -5.20% (p=0.000 n=10+9)
EncodeDigitsCompress1e5-8 5.26ms ± 3% 4.98ms ± 2% -5.48% (p=0.000 n=10+10)
EncodeDigitsCompress1e6-8 56.0ms ± 4% 52.1ms ± 1% -7.01% (p=0.000 n=10+10)
EncodeTwainHuffman1e4-8 70.9µs ± 3% 64.7µs ± 1% -8.68% (p=0.000 n=10+9)
EncodeTwainHuffman1e5-8 556µs ± 2% 524µs ± 2% -5.84% (p=0.000 n=10+10)
EncodeTwainHuffman1e6-8 5.54ms ± 3% 5.22ms ± 2% -5.70% (p=0.000 n=10+10)
EncodeTwainSpeed1e4-8 294µs ± 3% 284µs ± 1% -3.71% (p=0.000 n=10+10)
EncodeTwainSpeed1e5-8 2.59ms ± 2% 2.48ms ± 1% -4.14% (p=0.000 n=10+9)
EncodeTwainSpeed1e6-8 25.6ms ± 1% 24.3ms ± 1% -5.28% (p=0.000 n=9+10)
EncodeTwainDefault1e4-8 419µs ± 2% 396µs ± 1% -5.59% (p=0.000 n=10+9)
EncodeTwainDefault1e5-8 6.23ms ± 4% 5.75ms ± 1% -7.83% (p=0.000 n=10+9)
EncodeTwainDefault1e6-8 66.2ms ± 2% 61.4ms ± 1% -7.22% (p=0.000 n=10+10)
EncodeTwainCompress1e4-8 426µs ± 1% 405µs ± 1% -4.97% (p=0.000 n=9+10)
EncodeTwainCompress1e5-8 6.80ms ± 1% 6.32ms ± 1% -6.97% (p=0.000 n=9+10)
EncodeTwainCompress1e6-8 74.6ms ± 3% 68.7ms ± 1% -7.90% (p=0.000 n=10+9)

name old speed new speed delta
EncodeDigitsHuffman1e4-8 200MB/s ± 1% 208MB/s ± 1% +3.88% (p=0.000 n=10+9)
EncodeDigitsHuffman1e5-8 210MB/s ± 1% 218MB/s ± 1% +3.71% (p=0.000 n=10+10)
EncodeDigitsHuffman1e6-8 208MB/s ± 2% 219MB/s ± 1% +5.32% (p=0.000 n=10+9)
EncodeDigitsSpeed1e4-8 32.8MB/s ± 3% 34.5MB/s ± 2% +5.29% (p=0.000 n=10+9)
EncodeDigitsSpeed1e5-8 27.2MB/s ± 2% 28.6MB/s ± 2% +5.29% (p=0.000 n=10+10)
EncodeDigitsSpeed1e6-8 26.1MB/s ± 2% 27.9MB/s ± 1% +7.02% (p=0.000 n=9+10)
EncodeDigitsDefault1e4-8 27.7MB/s ± 2% 28.9MB/s ± 3% +4.30% (p=0.000 n=10+9)
EncodeDigitsDefault1e5-8 19.1MB/s ± 2% 20.2MB/s ± 3% +5.69% (p=0.000 n=10+10)
EncodeDigitsDefault1e6-8 17.7MB/s ± 3% 19.2MB/s ± 2% +8.31% (p=0.000 n=10+10)
EncodeDigitsCompress1e4-8 27.6MB/s ± 2% 29.1MB/s ± 1% +5.47% (p=0.000 n=10+9)
EncodeDigitsCompress1e5-8 19.0MB/s ± 3% 20.1MB/s ± 2% +5.78% (p=0.000 n=10+10)
EncodeDigitsCompress1e6-8 17.9MB/s ± 4% 19.2MB/s ± 1% +7.50% (p=0.000 n=10+10)
EncodeTwainHuffman1e4-8 141MB/s ± 3% 154MB/s ± 1% +9.46% (p=0.000 n=10+9)
EncodeTwainHuffman1e5-8 180MB/s ± 2% 191MB/s ± 2% +6.19% (p=0.000 n=10+10)
EncodeTwainHuffman1e6-8 181MB/s ± 3% 192MB/s ± 2% +6.02% (p=0.000 n=10+10)
EncodeTwainSpeed1e4-8 34.0MB/s ± 3% 35.3MB/s ± 1% +3.84% (p=0.000 n=10+10)
EncodeTwainSpeed1e5-8 38.7MB/s ± 2% 40.3MB/s ± 1% +4.30% (p=0.000 n=10+9)
EncodeTwainSpeed1e6-8 39.1MB/s ± 1% 41.2MB/s ± 1% +5.57% (p=0.000 n=9+10)
EncodeTwainDefault1e4-8 23.9MB/s ± 2% 25.3MB/s ± 1% +5.91% (p=0.000 n=10+9)
EncodeTwainDefault1e5-8 16.0MB/s ± 4% 17.4MB/s ± 1% +8.47% (p=0.000 n=10+9)
EncodeTwainDefault1e6-8 15.1MB/s ± 2% 16.3MB/s ± 1% +7.76% (p=0.000 n=10+10)
EncodeTwainCompress1e4-8 23.5MB/s ± 1% 24.7MB/s ± 1% +5.24% (p=0.000 n=9+10)
EncodeTwainCompress1e5-8 14.7MB/s ± 1% 15.8MB/s ± 1% +7.50% (p=0.000 n=9+10)
EncodeTwainCompress1e6-8 13.4MB/s ± 3% 14.6MB/s ± 1% +8.57% (p=0.000 n=10+9)

Change-Id: I5c7e84c2f9ea4d38a2115995705eebb93387e22f
Reviewed-on: https://go-review.googlesource.com/21759Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

f20b1809

all: replace magic 0x80 with named constant utf8.RuneSelf · 012557b3

Martin Möhrmann authored Apr 10, 2016

Change-Id: Id1c2e8e9d60588de866e8b6ca59cc83dd28f848f
Reviewed-on: https://go-review.googlesource.com/21756Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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012557b3

internal/trace: fix a typo in error message · 527ffebb

Dmitry Vyukov authored Apr 10, 2016

Change-Id: Id79eaa6d49dae80c334c7243b0a5bbcdcb9397d3
Reviewed-on: https://go-review.googlesource.com/21758Reviewed-by: Mikio Hara <mikioh.mikioh@gmail.com>

527ffebb

cmd: remove bio.Bread · de7ee57c

Marvin Stenger authored Apr 08, 2016

Replace calls to bio.Bread with calls to io.ReadFull.

Change-Id: I2ee8739d01e04a4da9c20b6ce7d1d5b89914b8ad
Reviewed-on: https://go-review.googlesource.com/21750Reviewed-by: Dave Cheney <dave@cheney.net>

de7ee57c

runtime: make execution error panic values implement the Error interface · e4f1d9cf

Emmanuel Odeke authored Mar 28, 2016

Make execution panics implement Error as
mandated by https://golang.org/ref/spec#Run_time_panics,
instead of panics with strings.

Fixes #14965

Change-Id: I7827f898b9b9c08af541db922cc24fa0800ff18a
Reviewed-on: https://go-review.googlesource.com/21214Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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e4f1d9cf

cmd/go: fix typo in findInternal documentation · 824d8c10

Wisdom Omuya authored Apr 09, 2016

Fixes #15217

Change-Id: Ib8f7af714197fd209e743f61f28a5b07c04a7f5c
Reviewed-on: https://go-review.googlesource.com/21793Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

824d8c10

09 Apr, 2016 8 commits

net/http/httputil: DumpRequest dumps Content-Length if set in header · 3598d4b8

Emmanuel Odeke authored Apr 09, 2016

Fixes #7215

Change-Id: I108171ef18cac66d0dc11ce3553c26fc49529807
Reviewed-on: https://go-review.googlesource.com/21790Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>

3598d4b8

cmd/go: fix typo in comment · c31fdd4e

Brad Fitzpatrick authored Apr 09, 2016

Thanks to deafgoat.

Fixes #15215

Change-Id: I9fababc7ecd201ce86020a438e4faee95e7623a8
Reviewed-on: https://go-review.googlesource.com/21792Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

c31fdd4e

runtime: revert "do not call timeBeginPeriod on windows" · 0435e88a

Dmitry Vyukov authored Mar 18, 2016

This reverts commit ab4c9298.

Sysmon critically depends on system timer resolution for retaking
of Ps blocked in system calls. See #14790 for an example
of a program where execution time goes from 2ms to 30ms if
timeBeginPeriod(1) is not used.

We can remove timeBeginPeriod(1) when we support UMS (#7876).

Update #14790

Change-Id: I362b56154359b2c52d47f9f2468fe012b481cf6d
Reviewed-on: https://go-review.googlesource.com/20834Reviewed-by: Austin Clements <austin@google.com>
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Reviewed-by: Alex Brainman <alex.brainman@gmail.com>

0435e88a

cmd/internal/bio: move Bgetc to link/internal/ld · 9d4efdfd

Dave Cheney authored Apr 08, 2016

Also, remove bio.Brdline.

Change-Id: I3e0caed27a373fd71737cf6892de5e8fc208b776
Reviewed-on: https://go-review.googlesource.com/21783Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Dave Cheney <dave@cheney.net>

9d4efdfd

cmd: remove unused code · bce9747e

Dave Cheney authored Apr 09, 2016

Generated with honnef.co/go/unused

There is a large amount of unused code in cmd/internal/obj/s390x but
that can wait til the s390x port is merged.

There is some unused code in
cmd/internal/unvendor/golang.org/x/arch/arm/armasm but that should be
addressed upstream and a new revision imported.

Change-Id: I252c0f9ea8c5bb1a0b530a374ef13a0a20ea56aa
Reviewed-on: https://go-review.googlesource.com/21782Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Dave Cheney <dave@cheney.net>

bce9747e

cmd/internal/bio: embed bufio.{Reader,Writer} in bio.{Reader,Writer} · 93368be6

Dave Cheney authored Apr 08, 2016

Change-Id: Ie95b0b0d4f724f4769cf2d4f8063cb5019fa9bc9
Reviewed-on: https://go-review.googlesource.com/21781Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

93368be6

cmd: remove bio.BufReader and bio.BufWriter · ca397bb6

Dave Cheney authored Apr 08, 2016

bio.BufReader was never used.

bio.BufWriter was used to wrap an existing io.Writer, but the
bio.Writer returned would not be seekable, so replace all occurences
with bufio.Reader instead.

Change-Id: I9c6779e35c63178aa4e104c17bb5bb8b52de0359
Reviewed-on: https://go-review.googlesource.com/21722Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Dave Cheney <dave@cheney.net>
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ca397bb6

cmd/link/internal: make ld.Bso a *bio.Writer · 6fee4aa5

Dave Cheney authored Apr 09, 2016

This is a pre requesite of CL 21722 and removes a lot of unidiomatic
boilerplate in the linker.

Change-Id: If7491b88212b2be7b0c8c588e9c196839131f8ad
Reviewed-on: https://go-review.googlesource.com/21780
Run-TryBot: Dave Cheney <dave@cheney.net>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>

6fee4aa5

08 Apr, 2016 8 commits

cmd/cgo: fix cgo with gccgo · 092ef8a2

Michael Hudson-Doyle authored Apr 08, 2016

Change-Id: I1780899255e22c16d7f8e9947609a1c284d7c42e
Reviewed-on: https://go-review.googlesource.com/21690Reviewed-by: David Crawshaw <crawshaw@golang.org>
Run-TryBot: Michael Hudson-Doyle <michael.hudson@canonical.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

092ef8a2

cmd/compile: insert instrumentation more carefully in racewalk · c3b3e7b4

David Chase authored Apr 08, 2016

Be more careful about inserting instrumentation in racewalk.
If the node being instrumented is an OAS, and it has a non-
empty Ninit, then append instrumentation to the Ninit list
rather than letting it be inserted before the OAS (and the
compilation of its init list).  This deals with the case that
the Ninit list defines a variable used in the RHS of the OAS.

Fixes #15091.

Change-Id: Iac91696d9104d07f0bf1bd3499bbf56b2e1ef073
Reviewed-on: https://go-review.googlesource.com/21771Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: David Chase <drchase@google.com>

c3b3e7b4

runtime: emit file:line info into traces · 0fb7b4cc

Dmitry Vyukov authored Apr 08, 2016

This makes traces self-contained and simplifies trace workflow
in modern cloud environments where it is simpler to reach
a service via HTTP than to obtain the binary.

Change-Id: I6ff3ca694dc698270f1e29da37d5efaf4e843a0d
Reviewed-on: https://go-review.googlesource.com/21732
Run-TryBot: Dmitry Vyukov <dvyukov@google.com>
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Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>

0fb7b4cc

cmd/cgo: increase s390x int type size to 8 bytes · 9ada88ae

Michael Munday authored Apr 08, 2016

The size of the int type in Go on s390x is 8 bytes, not 4.

Change-Id: I1a71ce8c9925f3499abb61c1aa4f6fa2d2ec0d7e
Reviewed-on: https://go-review.googlesource.com/21760Reviewed-by: Bill O'Farrell <billotosyr@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

9ada88ae

bytes: add ContainsRune · 59af53d6

Emmanuel Odeke authored Apr 08, 2016

Make package bytes consistent with strings
by adding missing function ContainsRune.

Fixes #15189

Change-Id: Ie09080b389e55bbe070c57aa3bd134053a805423
Reviewed-on: https://go-review.googlesource.com/21710
Run-TryBot: Rob Pike <r@golang.org>
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Reviewed-by: Rob Pike <r@golang.org>

59af53d6

syscall: add assembly for Linux on s390x · 6c5352f1

Michael Munday authored Apr 08, 2016

Change-Id: I42ade65a91f3effc03dd663ee449410baa9f8ca8
Reviewed-on: https://go-review.googlesource.com/21740Reviewed-by: Bill O'Farrell <billotosyr@gmail.com>
Reviewed-by: Minux Ma <minux@golang.org>
Run-TryBot: Minux Ma <minux@golang.org>
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6c5352f1

context: disable more flaky tests on openbsd · 59d18683

Brad Fitzpatrick authored Apr 08, 2016

Updates #15158

Change-Id: Icb3788152a7a5a9b0d56ea38da46d770ffdce413
Reviewed-on: https://go-review.googlesource.com/21763
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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Reviewed-by: Matthew Dempsky <mdempsky@google.com>

59d18683

test: skip nilptr3 test on s390x · dae98d5c

Michael Munday authored Mar 20, 2016

Fails for the same reason as ppc64 and mips64 (incomplete
optimization).

Change-Id: Ieb4d997fc27d4f2b756e63dd7f588abe10c0213a
Reviewed-on: https://go-review.googlesource.com/20963Reviewed-by: Bill O'Farrell <billotosyr@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

dae98d5c