[llvm-commits] [llvm] r56529 - /llvm/trunk/lib/CodeGen/DeadMachineInstructionElim.cpp

[Dan Gohman]

Author: djg
Date: Tue Sep 23 19:07:08 2008
New Revision: 56529

URL: http://llvm.org/viewvc/llvm-project?rev=56529&view=rev
Log:
Set SetStore to false, to allow this pass to delete
dead loads.

Modified:
    llvm/trunk/lib/CodeGen/DeadMachineInstructionElim.cpp

Modified: llvm/trunk/lib/CodeGen/DeadMachineInstructionElim.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/DeadMachineInstructionElim.cpp?rev=56529&r1=56528&r2=56529&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/DeadMachineInstructionElim.cpp (original)
+++ llvm/trunk/lib/CodeGen/DeadMachineInstructionElim.cpp Tue Sep 23 19:07:08 2008
@@ -46,7 +46,7 @@
   const MachineRegisterInfo &MRI = MF.getRegInfo();
   const TargetInstrInfo &TII = *MF.getTarget().getInstrInfo();
   BitVector LivePhysRegs;
-  bool SawStore = true;
+  bool SawStore;
 
   // Compute a bitvector to represent all non-allocatable physregs.
   BitVector NonAllocatableRegs = TRI.getAllocatableSet(MF);
@@ -79,6 +79,7 @@
       MachineInstr *MI = &*MII;
 
       // Don't delete instructions with side effects.
+      SawStore = false;
       if (MI->isSafeToMove(&TII, SawStore)) {
         // Examine each operand.
         bool AllDefsDead = true;