Emit target specific nodes for isPSHUFHWMask and isPSHUFLWMask

llvm-svn: 113050

Author: bcardosolopes

llvm/lib/Target/X86/X86ISelLowering.cpp

@@ -5471,11 +5471,19 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
   // FIXME: pshufb, blends, shifts.
   if (VT.getVectorNumElements() == 2 ||
       ShuffleVectorSDNode::isSplatMask(&M[0], VT) ||
-      isPSHUFHWMask(M, VT) ||
-      isPSHUFLWMask(M, VT) ||
       isPALIGNRMask(M, VT, Subtarget->hasSSSE3()))
     return Op;
 
+  if (isPSHUFHWMask(M, VT))
+    return getTargetShuffleNode(X86ISD::PSHUFHW, dl, VT, V1,
+                                X86::getShufflePSHUFHWImmediate(SVOp),
+                                DAG);
+
+  if (isPSHUFLWMask(M, VT))
+    return getTargetShuffleNode(X86ISD::PSHUFLW, dl, VT, V1,
+                                X86::getShufflePSHUFLWImmediate(SVOp),
+                                DAG);
+
   if (isSHUFPMask(M, VT)) {
     unsigned TargetMask = X86::getShuffleSHUFImmediate(SVOp);
     if (VT == MVT::v4f32 || VT == MVT::v4i32)