Added MachineInstr::isRegTiedToDefOperand to check for two-addressness.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@67335 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocLocal.cpp b/lib/CodeGen/RegAllocLocal.cpp
index a8c6900..b965dc9 100644
--- a/lib/CodeGen/RegAllocLocal.cpp
+++ b/lib/CodeGen/RegAllocLocal.cpp
@@ -695,7 +695,7 @@
     if (isPhysReg || !usedOutsideBlock) {
       if (MO.isUse()) {
         // Don't mark uses that are tied to defs as kills.
-        if (MI->getDesc().getOperandConstraint(idx, TOI::TIED_TO) == -1)
+        if (!MI->isRegTiedToDefOperand(idx))
           MO.setIsKill(true);
       } else
         MO.setIsDead(true);