Silence unused variable warning in -asserts build

[oota-llvm.git] / lib / CodeGen / StrongPHIElimination.cpp

diff --git a/lib/CodeGen/StrongPHIElimination.cpp b/lib/CodeGen/StrongPHIElimination.cpp
index 8c6e44bb2183e37a227102779ac260deb7524621..5b061950464788bd50caf9934c1431525ba4e13c 100644 (file)
--- a/lib/CodeGen/StrongPHIElimination.cpp
+++ b/lib/CodeGen/StrongPHIElimination.cpp
@@ -228,7 +228,6 @@ static MachineOperand *findLastUse(MachineBasicBlock *MBB, unsigned Reg) {
         return &MO;
     }
   }
-  return NULL;
 }
 
 bool StrongPHIElimination::runOnMachineFunction(MachineFunction &MF) {
@@ -394,8 +393,6 @@ bool StrongPHIElimination::runOnMachineFunction(MachineFunction &MF) {
     LastUse->setIsKill(true);
   }
 
-  LI->renumber();
-
   Allocator.Reset();
   RegNodeMap.clear();
   PHISrcDefs.clear();
@@ -675,8 +672,8 @@ void StrongPHIElimination::InsertCopiesForPHI(MachineInstr *PHI,
       LiveInterval &SrcInterval = LI->getInterval(SrcReg);
       SlotIndex PredIndex = LI->getMBBEndIdx(PredBB);
       VNInfo *SrcVNI = SrcInterval.getVNInfoBefore(PredIndex);
+      (void)SrcVNI;
       assert(SrcVNI);
-      SrcVNI->setHasPHIKill(true);
       continue;
     }
 
@@ -747,7 +744,6 @@ void StrongPHIElimination::InsertCopiesForPHI(MachineInstr *PHI,
     SlotIndex PHIIndex = LI->getInstructionIndex(PHI);
     VNInfo *DestVNI = DestLI.getVNInfoAt(PHIIndex.getRegSlot());
     assert(DestVNI);
-    DestVNI->setIsPHIDef(true);
   
     // Prior to PHI elimination, the live ranges of PHIs begin at their defining
     // instruction. After PHI elimination, PHI instructions are replaced by VNs
@@ -779,9 +775,7 @@ void StrongPHIElimination::InsertCopiesForPHI(MachineInstr *PHI,
   SlotIndex MBBStartIndex = LI->getMBBStartIdx(MBB);
   SlotIndex DestCopyIndex = LI->getInstructionIndex(CopyInstr);
   VNInfo *CopyVNI = CopyLI.getNextValue(MBBStartIndex,
-                                        CopyInstr,
                                         LI->getVNInfoAllocator());
-  CopyVNI->setIsPHIDef(true);
   CopyLI.addRange(LiveRange(MBBStartIndex,
                             DestCopyIndex.getRegSlot(),
                             CopyVNI));