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Set SetStore to false, to allow this pass to delete

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dead loads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56529 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2008-09-24 00:07:08 +00:00
parent 3e4fb70c6a
commit 035268eaf7
1 changed files with 2 additions and 1 deletions
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3
lib/CodeGen/DeadMachineInstructionElim.cpp
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@ -46,7 +46,7 @@ bool DeadMachineInstructionElim::runOnMachineFunction(MachineFunction &MF) {
const MachineRegisterInfo &MRI = MF.getRegInfo(); const MachineRegisterInfo &MRI = MF.getRegInfo();
const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo(); const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo();
BitVector LivePhysRegs; BitVector LivePhysRegs;
bool SawStore = true; bool SawStore;
// Compute a bitvector to represent all non-allocatable physregs. // Compute a bitvector to represent all non-allocatable physregs.
BitVector NonAllocatableRegs = TRI.getAllocatableSet(MF); BitVector NonAllocatableRegs = TRI.getAllocatableSet(MF);
@ -79,6 +79,7 @@ bool DeadMachineInstructionElim::runOnMachineFunction(MachineFunction &MF) {
MachineInstr *MI = &*MII; MachineInstr *MI = &*MII;
// Don't delete instructions with side effects. // Don't delete instructions with side effects.
SawStore = false;
if (MI->isSafeToMove(&TII, SawStore)) { if (MI->isSafeToMove(&TII, SawStore)) {
// Examine each operand. // Examine each operand.
bool AllDefsDead = true; bool AllDefsDead = true;