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go/src/pkg/runtime/arch_386.h
Russ Cox d42495aa80 cmd/cc: add PREFETCH built-in (like SET, USED)
This makes it possible to inline the prefetch of upcoming
memory addresses during garbage collection, instead of
needing to flush registers, make a function call, and
reload registers.  On garbage collection-heavy workloads,
this results in a 5% speedup.

Fixes #3493.

R=dvyukov, ken, r, dave
CC=golang-dev
https://golang.org/cl/5990066
2012-05-02 16:22:56 -04:00

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enum {
thechar = '8',
CacheLineSize = 64
};