Austin Clements a5c3bbe0b4 runtime: eliminate write barrier from adjustpointers ... Currently adjustpointers invokes a write barrier for every stack slot it updates. This is safe---the write barrier always does nothing because the new value is never a heap pointer---but it's unnecessary overhead in performance and complexity. Fix this by rewriting adjustpointers to work with *uintptrs instead of *unsafe.Pointers. As an added bonus, this makes the code cleaner. name old mean new mean delta BinaryTree17 3.35s × (0.98,1.01) 3.33s × (0.99,1.02) ~ (p=0.095 n=20+19) Fannkuch11 2.49s × (1.00,1.01) 2.52s × (0.99,1.01) +1.23% (p=0.000 n=19+20) FmtFprintfEmpty 52.2ns × (0.99,1.02) 52.2ns × (0.99,1.02) ~ (p=0.766 n=19+19) FmtFprintfString 181ns × (0.99,1.02) 179ns × (0.99,1.01) -1.06% (p=0.000 n=20+19) FmtFprintfInt 177ns × (0.99,1.01) 173ns × (0.99,1.02) -2.26% (p=0.000 n=17+20) FmtFprintfIntInt 300ns × (0.99,1.01) 302ns × (0.99,1.01) +0.76% (p=0.000 n=19+20) FmtFprintfPrefixedInt 253ns × (0.99,1.02) 256ns × (0.99,1.01) +0.96% (p=0.000 n=20+19) FmtFprintfFloat 334ns × (0.99,1.02) 334ns × (1.00,1.01) ~ (p=0.243 n=20+19) FmtManyArgs 1.16µs × (0.99,1.01) 1.17µs × (0.99,1.02) +0.88% (p=0.000 n=20+20) GobDecode 9.16ms × (0.99,1.02) 9.18ms × (1.00,1.00) +0.21% (p=0.048 n=20+17) GobEncode 7.03ms × (0.99,1.01) 7.05ms × (0.99,1.01) ~ (p=0.091 n=19+19) Gzip 374ms × (0.99,1.01) 372ms × (0.99,1.02) -0.50% (p=0.008 n=18+20) Gunzip 92.9ms × (0.99,1.01) 92.5ms × (1.00,1.01) -0.47% (p=0.002 n=19+19) HTTPClientServer 53.1µs × (0.98,1.01) 52.5µs × (0.99,1.01) -0.98% (p=0.000 n=20+19) JSONEncode 17.4ms × (0.99,1.02) 17.5ms × (0.99,1.01) ~ (p=0.061 n=19+20) JSONDecode 66.0ms × (0.99,1.02) 64.7ms × (0.99,1.01) -1.87% (p=0.000 n=20+20) Mandelbrot200 3.94ms × (1.00,1.01) 3.95ms × (1.00,1.01) ~ (p=0.799 n=18+19) GoParse 3.89ms × (0.99,1.02) 3.86ms × (0.99,1.01) -0.70% (p=0.016 n=20+19) RegexpMatchEasy0_32 102ns × (0.99,1.02) 102ns × (1.00,1.01) ~ (p=0.557 n=20+18) RegexpMatchEasy0_1K 353ns × (0.99,1.02) 341ns × (0.99,1.01) -3.38% (p=0.000 n=20+20) RegexpMatchEasy1_32 85.0ns × (0.99,1.02) 85.0ns × (0.99,1.01) ~ (p=0.851 n=19+20) RegexpMatchEasy1_1K 521ns × (0.99,1.02) 506ns × (1.00,1.01) -2.85% (p=0.000 n=20+18) RegexpMatchMedium_32 142ns × (0.99,1.02) 141ns × (1.00,1.01) -1.17% (p=0.000 n=20+19) RegexpMatchMedium_1K 42.8µs × (0.99,1.01) 42.3µs × (0.99,1.01) -1.07% (p=0.000 n=20+19) RegexpMatchHard_32 2.17µs × (0.99,1.01) 2.16µs × (1.00,1.01) -0.51% (p=0.042 n=20+18) RegexpMatchHard_1K 65.6µs × (0.99,1.01) 64.8µs × (1.00,1.00) -1.21% (p=0.000 n=20+17) Revcomp 581ms × (0.99,1.04) 536ms × (1.00,1.01) -7.71% (p=0.000 n=20+18) Template 77.2ms × (0.99,1.01) 76.8ms × (0.99,1.01) ~ (p=0.426 n=20+18) TimeParse 369ns × (0.99,1.02) 371ns × (1.00,1.01) ~ (p=0.117 n=20+19) TimeFormat 371ns × (0.99,1.02) 391ns × (0.99,1.01) +5.33% (p=0.000 n=20+19) Change-Id: I5b952ba577ac4365c8c87db837c5804a1e30b7be Reviewed-on: https://go-review.googlesource.com/10293 Reviewed-by: Russ Cox <rsc@golang.org>		2015-05-21 18:35:49 +00:00
..
archive	archive/tar: fix error message	2015-05-04 21:27:45 +00:00
bufio
builtin
bytes
cmd	cmd/internal/obj: remove F3t field from Prog	2015-05-21 18:28:50 +00:00
compress
container
crypto
database/sql
debug	all: build and use go tool compile, go tool link	2015-05-21 17:32:03 +00:00
encoding	encoding/gob: fix docs	2015-05-20 22:34:08 +00:00
errors
expvar
flag	flag: Fix up a package comment a bit.	2015-05-19 02:18:40 +00:00
fmt	fmt: allow for space and plus flags when computing widths	2015-05-11 18:34:19 +00:00
go	all: retire architecture letter in file names, public API	2015-05-21 17:32:17 +00:00
hash	hash/crc32: move reverse representation docs to an example	2015-05-04 00:19:22 +00:00
html	html/template: fix string iteration in replacement operations	2015-05-19 22:45:50 +00:00
image	image/gif: allow encoding a single-frame image whose top-left corner	2015-05-06 01:00:58 +00:00
index/suffixarray
internal	internal/syscall/windows/registry: fix read overrun in GetStringsValue	2015-05-15 03:25:41 +00:00
io
log
math	math/big, cmd/internal/gc/big: fix vet detected printf problem	2015-05-14 05:34:40 +00:00
mime	mime: Export RFC 2047 code	2015-05-11 18:50:32 +00:00
net	net: document that ListenMulticastUDP is for simple applications	2015-05-20 22:30:52 +00:00
os	os: eradicate smallpox after test	2015-05-06 17:38:57 +00:00
path
reflect	reflect: make PtrTo(FuncOf(...)) not crash	2015-05-16 00:51:05 +00:00
regexp
runtime	runtime: eliminate write barrier from adjustpointers	2015-05-21 18:35:49 +00:00
sort
strconv
strings
sync
syscall	syscall: don't run fcntl child process test on iOS	2015-05-15 16:41:12 +00:00
testing	testing: fix typo	2015-05-12 23:39:00 +00:00
text	text/template: fix race condition on function maps	2015-05-16 00:32:21 +00:00
time	time: document that not all Unix time can be represented	2015-05-19 06:19:33 +00:00
unicode
unsafe
all.bash
all.bat
all.rc
androidtest.bash
bootstrap.bash
buildall.bash	buildall.bash: exit 1 when make.bash fails	2015-05-17 01:40:33 +00:00
clean.bash
clean.bat
clean.rc
iostest.bash
make.bash
make.bat
Make.dist
make.rc
nacltest.bash	nacltest.bash: remove syscall/fstest_nacl.go after test	2015-05-02 02:48:32 +00:00
race.bash
race.bat
run.bash	build: correct quoting of args in run.bash	2015-05-09 04:23:47 +00:00
run.bat
run.rc