Minor cleanup, no functionality change for current targets


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25173 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 593bbdb..d5160cd 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -585,7 +585,8 @@
     handleVirtualRegisterDef(MBB, MI, getOrCreateInterval(reg));
   else if (allocatableRegs_[reg]) {
     unsigned SrcReg = 0, DestReg = 0;
-    bool IsMove = tii_->isMoveInstr(*MI, SrcReg, DestReg);
+    if (!tii_->isMoveInstr(*MI, SrcReg, DestReg))
+      SrcReg = DestReg = 0;
 
     handlePhysicalRegisterDef(MBB, MI, getOrCreateInterval(reg),
                               SrcReg, DestReg);