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cmd/internal/gc, cmd/internal/ld, cmd/internal/obj: teach compiler about local symbols

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This lets us avoid loading string constants via the GOT and (together with
http://golang.org/cl/9102) results in the fannkuch benchmark having very similar
register usage with -dynlink as without.

Change-Id: Ic3892b399074982b76773c3e547cfbba5dabb6f9
Reviewed-on: https://go-review.googlesource.com/9103
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Michael Hudson-Doyle 2015-04-18 08:14:08 +12:00 • committed by Ian Lance Taylor
parent 0e6a6c510f
commit 029c7bbdfe
11 changed files with 55 additions and 37 deletions
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3
src/cmd/internal/obj/textflag.go
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@ -30,4 +30,7 @@ const (
// This function uses its incoming context register.
NEEDCTXT = 64
// When passed to ggloblsym, causes Local to be set to true on the LSym it creates.
LOCAL = 128
)