Use CloneMachineInstr to make a new MI in commuteInstruction to make the code toleran...

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163000 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/TargetInstrInfoImpl.cpp b/lib/CodeGen/TargetInstrInfoImpl.cpp
index 59d62bba54039571d17bc0ef8760885fa437b884..7e7f835040b6fa5f12aa050804708fcaa012cd2a 100644 (file)
--- a/lib/CodeGen/TargetInstrInfoImpl.cpp
+++ b/lib/CodeGen/TargetInstrInfoImpl.cpp
@@ -99,17 +99,8 @@ MachineInstr *TargetInstrInfoImpl::commuteInstruction(MachineInstr *MI,
 
   if (NewMI) {
     // Create a new instruction.
-    bool Reg0IsDead = HasDef ? MI->getOperand(0).isDead() : false;
     MachineFunction &MF = *MI->getParent()->getParent();
-    if (HasDef)
-      return BuildMI(MF, MI->getDebugLoc(), MI->getDesc())
-        .addReg(Reg0, RegState::Define | getDeadRegState(Reg0IsDead), SubReg0)
-        .addReg(Reg2, getKillRegState(Reg2IsKill), SubReg2)
-        .addReg(Reg1, getKillRegState(Reg1IsKill), SubReg1);
-    else
-      return BuildMI(MF, MI->getDebugLoc(), MI->getDesc())
-        .addReg(Reg2, getKillRegState(Reg2IsKill), SubReg2)
-        .addReg(Reg1, getKillRegState(Reg1IsKill), SubReg1);
+    MI = MF.CloneMachineInstr(MI);
   }
 
   if (HasDef) {