Unbreak the build. Only form shld / shrd after legalization.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102488 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index c38b678..3d87ffb 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -9597,7 +9597,7 @@
 static SDValue PerformOrCombine(SDNode *N, SelectionDAG &DAG,
                                 TargetLowering::DAGCombinerInfo &DCI,
                                 const X86Subtarget *Subtarget) {
-  if (!DCI.isBeforeLegalize())
+  if (DCI.isBeforeLegalizeOps())
     return SDValue();
 
   EVT VT = N->getValueType(0);