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runtime: faster string equality.

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benchmark                                old ns/op    new ns/op    delta
BenchmarkCompareStringEqual                     51           35  -30.20%
BenchmarkCompareStringIdentical                 51            7  -85.71%
BenchmarkCompareStringSameLength                25           18  -28.29%
BenchmarkCompareStringDifferentLength            2            2   +1.46%

R=golang-dev, rsc
CC=golang-dev, remy
https://golang.org/cl/6450092
This commit is contained in:
Rémy Oudompheng 2012-08-05 21:35:41 +02:00
parent ab058b3540
commit 77f3e189d2
6 changed files with 89 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

4
src/pkg/runtime/alg.c
View file

@ -324,6 +324,10 @@ runtime·strequal(bool *eq, uintptr s, void *a, void *b)
*eq = false;
return;
}
if(((String*)a)->str == ((String*)b)->str) {
*eq = true;
return;
}
runtime·memequal(eq, alen, ((String*)a)->str, ((String*)b)->str);
}