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[dev.ssa] cmd/compile: MOVBconst might also clobber flags

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It gets rewritten to an xor by the linker also.

Change-Id: Iae35130325d41bd1a09b7e971190cae6f4e17fac
Reviewed-on: https://go-review.googlesource.com/20058
Reviewed-by: David Chase <drchase@google.com>
Run-TryBot: Keith Randall <khr@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Keith Randall 2016-02-29 11:10:08 -08:00
parent 5c5fa3628c
commit f1f366c1e7
1 changed files with 1 additions and 1 deletions
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2
src/cmd/compile/internal/gc/ssa.go
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@ -4649,7 +4649,7 @@ func (s *genState) markMoves(b *ssa.Block) {
}
for i := len(b.Values) - 1; i >= 0; i-- {
v := b.Values[i]
if flive && (v.Op == ssa.OpAMD64MOVWconst || v.Op == ssa.OpAMD64MOVLconst || v.Op == ssa.OpAMD64MOVQconst) {
if flive && (v.Op == ssa.OpAMD64MOVBconst || v.Op == ssa.OpAMD64MOVWconst || v.Op == ssa.OpAMD64MOVLconst || v.Op == ssa.OpAMD64MOVQconst) {
// The "mark" is any non-nil Aux value.
v.Aux = v
}