Revision 1.83 causes PR1037.
Reverted.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32305 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/VirtRegMap.cpp b/lib/CodeGen/VirtRegMap.cpp
index 79d3b64..8184075 100644
--- a/lib/CodeGen/VirtRegMap.cpp
+++ b/lib/CodeGen/VirtRegMap.cpp
@@ -97,8 +97,7 @@
   }
 
   ModRef MRInfo;
-  if (OldMI->getInstrDescriptor()->
-      getOperandConstraint(OpNo, TOI::TIED_TO) != -1) {
+  if (TII.getOperandConstraint(OldMI->getOpcode(), OpNo, TOI::TIED_TO)) {
     // Folded a two-address operand.
     MRInfo = isModRef;
   } else if (OldMI->getOperand(OpNo).isDef()) {