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AMDGPU/SI: The SIShrinkInstructions pass should only fold immediates with one use

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This is convered by existing testcases and will be exposed by a future
commit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@241817 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Tom Stellard 2015-07-09 16:30:36 +00:00
parent e05910e677
commit 2b2d86178c
1 changed files with 1 additions and 1 deletions
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2
lib/Target/AMDGPU/SIShrinkInstructions.cpp
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@ -149,7 +149,7 @@ static void foldImmediates(MachineInstr &MI, const SIInstrInfo *TII,
return;
// Try to fold Src0
if (Src0.isReg()) {
if (Src0.isReg() && MRI.hasOneUse(Src0.getReg())) {
unsigned Reg = Src0.getReg();
MachineInstr *Def = MRI.getUniqueVRegDef(Reg);
if (Def && Def->isMoveImmediate()) {