1 files changed, 2 insertions, 7 deletions
diff --git a/lib/CodeGen/RegAllocSimple.cpp b/lib/CodeGen/RegAllocSimple.cpp
index e632e3599a..576d2b421c 100644
--- a/lib/CodeGen/RegAllocSimple.cpp
+++ b/lib/CodeGen/RegAllocSimple.cpp
@@ -41,7 +41,6 @@ namespace {
     MachineFunction *MF;
     const TargetMachine *TM;
     const MRegisterInfo *RegInfo;
-    bool *PhysRegsEverUsed;
 
     // StackSlotForVirtReg - Maps SSA Regs => frame index on the stack where
     // these values are spilled
@@ -126,7 +125,7 @@ unsigned RegAllocSimple::getFreeReg(unsigned virtualReg) {
     unsigned PhysReg = *(RI+regIdx);
 
     if (!RegsUsed[PhysReg]) {
-      PhysRegsEverUsed[PhysReg] = true;
+      MF->setPhysRegUsed(PhysReg);
       return PhysReg;
     }
   }
@@ -178,7 +177,7 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
     if (Desc.ImplicitDefs) {
       for (Regs = Desc.ImplicitDefs; *Regs; ++Regs) {
         RegsUsed[*Regs] = true;
-        PhysRegsEverUsed[*Regs] = true;
+        MF->setPhysRegUsed(*Regs);
       }
     }
 
@@ -236,10 +235,6 @@ bool RegAllocSimple::runOnMachineFunction(MachineFunction &Fn) {
   TM = &MF->getTarget();
   RegInfo = TM->getRegisterInfo();
 
-  PhysRegsEverUsed = new bool[RegInfo->getNumRegs()];
-  std::fill(PhysRegsEverUsed, PhysRegsEverUsed+RegInfo->getNumRegs(), false);
-  Fn.setUsedPhysRegs(PhysRegsEverUsed);
-
   // Loop over all of the basic blocks, eliminating virtual register references
   for (MachineFunction::iterator MBB = Fn.begin(), MBBe = Fn.end();
        MBB != MBBe; ++MBB)