- Remove calls to copyKillDeadInfo which is an N^2 function. Instead, propagate kill / dead markers as new instructions are constructed in foldMemoryOperand, convertToThressAddress, etc.

- Also remove LiveVariables::instructionChanged, etc. Replace all calls with cheaper calls which update VarInfo kill list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53097 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 8 insertions, 6 deletions

diff --git a/lib/Target/CellSPU/SPUInstrInfo.cpp b/lib/Target/CellSPU/SPUInstrInfo.cpp
index 3e991a9..aef3611 100644
--- a/lib/Target/CellSPU/SPUInstrInfo.cpp
+++ b/lib/Target/CellSPU/SPUInstrInfo.cpp
@@ -412,20 +412,22 @@ SPUInstrInfo::foldMemoryOperand(MachineFunction &MF,
        && MI->getOperand(1).getReg() == MI->getOperand(2).getReg()) {
     if (OpNum == 0) {  // move -> store
       unsigned InReg = MI->getOperand(1).getReg();
+      bool isKill = MI->getOperand(1).isKill();
       if (FrameIndex < SPUFrameInfo::maxFrameOffset()) {
-        NewMI = addFrameReference(BuildMI(TII.get(SPU::STQDr32)).addReg(InReg),
+        NewMI = addFrameReference(BuildMI(TII.get(SPU::STQDr32))
+                                  .addReg(InReg, false, false, isKill),
                                   FrameIndex);
       }
     } else {           // move -> load
       unsigned OutReg = MI->getOperand(0).getReg();
-      Opc = (FrameIndex < SPUFrameInfo::maxFrameOffset()) ? SPU::STQDr32 : SPU::STQXr32;
-      NewMI = addFrameReference(BuildMI(TII.get(Opc), OutReg), FrameIndex);
+      bool isDead = MI->getOperand(0).isDead();
+      Opc = (FrameIndex < SPUFrameInfo::maxFrameOffset())
+        ? SPU::STQDr32 : SPU::STQXr32;
+      NewMI = addFrameReference(BuildMI(TII.get(Opc))
+                       .addReg(OutReg, true, false, false, isDead), FrameIndex);
     }
   }
 
-  if (NewMI)
-    NewMI->copyKillDeadInfo(MI);
-
   return NewMI;
 #else
   return 0;