[llvm] r175603 - Move the computation of the IsEarlyClobber flag into its own loop, since the

[Cameron Zwarich]

Author: zwarich
Date: Wed Feb 20 00:46:46 2013
New Revision: 175603

URL: http://llvm.org/viewvc/llvm-project?rev=175603&view=rev
Log:
Move the computation of the IsEarlyClobber flag into its own loop, since the
correct value is needed in every iteration of the loop for updating
LiveIntervals.

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

Modified: llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp?rev=175603&r1=175602&r2=175603&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp (original)
+++ llvm/trunk/lib/CodeGen/TwoAddressInstructionPass.cpp Wed Feb 20 00:46:46 2013
@@ -1215,6 +1215,11 @@ TwoAddressInstructionPass::processTiedPa
                                             TiedPairList &TiedPairs,
                                             unsigned &Dist) {
   bool IsEarlyClobber = false;
+  for (unsigned tpi = 0, tpe = TiedPairs.size(); tpi != tpe; ++tpi) {
+    const MachineOperand &DstMO = MI->getOperand(TiedPairs[tpi].second);
+    IsEarlyClobber |= DstMO.isEarlyClobber();
+  }
+
   bool RemovedKillFlag = false;
   bool AllUsesCopied = true;
   unsigned LastCopiedReg = 0;
@@ -1225,7 +1230,6 @@ TwoAddressInstructionPass::processTiedPa
 
     const MachineOperand &DstMO = MI->getOperand(DstIdx);
     unsigned RegA = DstMO.getReg();
-    IsEarlyClobber |= DstMO.isEarlyClobber();
 
     // Grab RegB from the instruction because it may have changed if the
     // instruction was commuted.