Move findTiedToSrcOperand to TargetInstrDescriptor.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32366 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAllocSimple.cpp b/lib/CodeGen/RegAllocSimple.cpp
index 3437b00..0150404 100644
--- a/lib/CodeGen/RegAllocSimple.cpp
+++ b/lib/CodeGen/RegAllocSimple.cpp
@@ -198,8 +198,7 @@
         unsigned physReg = Virt2PhysRegMap[virtualReg];
         if (physReg == 0) {
           if (op.isDef()) {
-            int TiedOp = TM->getInstrInfo()->
-              findTiedToSrcOperand(MI->getInstrDescriptor(), i);
+            int TiedOp = MI->getInstrDescriptor()->findTiedToSrcOperand(i);
             if (TiedOp == -1) {
               physReg = getFreeReg(virtualReg);
             } else {