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runtime: use unaligned loads on ppc64

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benchmark                      old ns/op     new ns/op     delta
BenchmarkAlignedLoad-160       8.67          7.42          -14.42%
BenchmarkUnalignedLoad-160     8.63          7.37          -14.60%

Change-Id: Id4609d7b4038c4d2ec332efc4fe6f1adfb61b82b
Reviewed-on: https://go-review.googlesource.com/20812
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Keith Randall 2016-03-17 13:28:04 -07:00
parent 982322769c
commit 15ea61146e
4 changed files with 27 additions and 2 deletions
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3
src/runtime/export_test.go
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@ -193,3 +193,6 @@ func SetTracebackEnv(level string) {
setTraceback(level)
traceback_env = traceback_cache
}
var ReadUnaligned32 = readUnaligned32
var ReadUnaligned64 = readUnaligned64