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cmd/compile: remove stale register use array

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The reg[] array in .../gc is where truth lies.  The copy in .../ARCH
is incorrect as it is mostly not updated to reflect regalloc decisions.

This bug was introduced in the rewrite
https://go-review.googlesource.com/#/c/7853/.  The new reg[] array was
introduced in .../gc but not all of the uses were removed in the
.../ARCH directories.

Fixes #12133

Change-Id: I6364fc403cdab92d802d17f2913ba1607734037c
Reviewed-on: https://go-review.googlesource.com/13630
Reviewed-by: Russ Cox <rsc@golang.org>
This commit is contained in:
Keith Randall 2015-08-13 12:25:19 -07:00 • committed by Russ Cox
parent cda1fc0071
commit e97ab0a0ac
8 changed files with 42 additions and 15 deletions
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7
src/cmd/compile/internal/gc/gsubr.go
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@ -602,6 +602,13 @@ func unpatch(p *obj.Prog) *obj.Prog {
var reg [100]int // count of references to reg
var regstk [100][]byte // allocation sites, when -v is given
func GetReg(r int) int {
return reg[r-Thearch.REGMIN]
}
func SetReg(r, v int) {
reg[r-Thearch.REGMIN] = v
}
func ginit() {
for r := range reg {
reg[r] = 1