Nick Craig-Wood 107d18299c crypto/sha1: Optimise FUNC1 with alternate formulation ... According to Wikipedia: http://en.wikipedia.org/wiki/SHA-1 there is an alternate formulation for the FUNC1 transform, namely f1 = d xor (b and (c xor d)) instead of f1 = (b and c) or ((not b) and d) This reduces the instruction count of FUNC1 from 6 to 4 and makes about 5% speed improvement on amd64 and suprisingly 17% on 386. amd64 Intel(R) Core(TM) i7 CPU Q 820 @ 1.73GHz: benchmark old ns/op new ns/op delta BenchmarkHash8Bytes 506 499 -1.38% BenchmarkHash1K 3099 2961 -4.45% BenchmarkHash8K 22292 21243 -4.71% benchmark old MB/s new MB/s speedup BenchmarkHash8Bytes 15.80 16.00 1.01x BenchmarkHash1K 330.40 345.82 1.05x BenchmarkHash8K 367.48 385.63 1.05x i386 Intel(R) Core(TM) i7 CPU Q 820 @ 1.73GHz: benchmark old ns/op new ns/op delta BenchmarkHash8Bytes 647 615 -4.95% BenchmarkHash1K 3673 3161 -13.94% BenchmarkHash8K 26141 22374 -14.41% benchmark old MB/s new MB/s speedup BenchmarkHash8Bytes 12.35 13.01 1.05x BenchmarkHash1K 278.74 323.94 1.16x BenchmarkHash8K 313.37 366.13 1.17x The improvements on an Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz were almost identical. R=golang-dev, r, hanwen CC=golang-dev, rsc https://golang.org/cl/19910043		2013-12-12 11:26:36 -08:00
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cmd	cmd/5a, cmd/6a, cmd/8a: fix .y files to match y.tab.[ch]	2013-12-11 12:11:37 -05:00
lib9	all: compiler/bootstrap for dragonfly/amd64	2013-08-24 01:18:04 +10:00
libbio	build: do not use the host's libbio on Plan 9	2013-12-09 18:39:58 -05:00
liblink	liblink: fix extern register accesses on Plan 9 (386)	2013-12-09 18:48:44 -05:00
libmach	libmach: accept OS X binary generated by external linker	2013-09-10 11:50:34 -07:00
pkg	crypto/sha1: Optimise FUNC1 with alternate formulation	2013-12-12 11:26:36 -08:00
all.bash
all.bat
all.rc
clean.bash
clean.bat
clean.rc
make.bash	cmd/dist, build: support building statically linked toolchain	2013-10-01 23:44:20 -04:00
make.bat	cmd/dist: fix windows build.	2013-08-02 14:29:04 -07:00
Make.dist
make.rc	build: fix make.rc on Plan 9	2013-05-24 13:55:19 -07:00
race.bash	race.bash, race.bat: build a race enabled cmd/cgo before trying to use it	2013-09-29 10:34:41 +10:00
race.bat	race.bash, race.bat: build a race enabled cmd/cgo before trying to use it	2013-09-29 10:34:41 +10:00
run.bash	cgo: enable cgo on dragonfly	2013-09-04 15:19:21 -07:00
run.bat	runtime/race: add end-to-end test on windows	2013-08-15 12:13:00 +10:00
run.rc	build: remove builder from test suite (fix build)	2013-08-01 13:49:00 +10:00
sudo.bash	cmd/cov: delete	2013-05-24 11:06:06 -07:00