commit aace0f295b0e2467a38424aa7ead34de09b3f37d
author Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Sat Sep 04 02:36:07 2010 +0000
committer Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Sat Sep 04 02:36:07 2010 +0000
tree 30783dc3653e851c31d4eb146bab648e5787c13f
parent c800c0d25f70e445ff4f17bf720ae5d2f942e695

Emit target specific nodes to handle palignr. Do not touch it for MMX versions yet.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113056 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/X86/X86ISelLowering.cpp

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index f7b8100..45052da 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -2592,6 +2592,7 @@
   case X86ISD::PSHUFHW:
   case X86ISD::PSHUFLW:
   case X86ISD::SHUFPD:
+  case X86ISD::PALIGN:
   case X86ISD::SHUFPS:
   case X86ISD::MOVLHPS:
   case X86ISD::MOVLHPD:
@@ -2648,6 +2649,7 @@
                SDValue V1, SDValue V2, unsigned TargetMask, SelectionDAG &DAG) {
   switch(Opc) {
   default: llvm_unreachable("Unknown x86 shuffle node");
+  case X86ISD::PALIGN:
   case X86ISD::SHUFPD:
   case X86ISD::SHUFPS:
     return DAG.getNode(Opc, dl, VT, V1, V2,
@@ -5262,6 +5264,7 @@
   bool V2IsSplat = false;
   bool HasSSE2 = Subtarget->hasSSE2() || Subtarget->hasAVX();
   bool HasSSE3 = Subtarget->hasSSE3() || Subtarget->hasAVX();
+  bool HasSSSE3 = Subtarget->hasSSSE3() || Subtarget->hasAVX();
   MachineFunction &MF = DAG.getMachineFunction();
   bool OptForSize = MF.getFunction()->hasFnAttr(Attribute::OptimizeForSize);
 
@@ -5469,10 +5472,14 @@
     return isPALIGNRMask(M, VT, Subtarget->hasSSSE3()) ? Op : SDValue();
 
   // FIXME: pshufb, blends, shifts.
-  if (VT.getVectorNumElements() == 2 ||
-      isPALIGNRMask(M, VT, Subtarget->hasSSSE3()))
+  if (VT.getVectorNumElements() == 2)
     return Op;
 
+  if (isPALIGNRMask(M, VT, HasSSSE3))
+    return getTargetShuffleNode(X86ISD::PALIGN, dl, VT, V1, V2,
+                                X86::getShufflePALIGNRImmediate(SVOp),
+                                DAG);
+
   if (ShuffleVectorSDNode::isSplatMask(&M[0], VT) &&
       SVOp->getSplatIndex() == 0 && V2IsUndef) {
     if (VT == MVT::v2f64)
@@ -10780,6 +10787,7 @@
   case ISD::ZERO_EXTEND:    return PerformZExtCombine(N, DAG);
   case X86ISD::SHUFPS:      // Handle all target specific shuffles
   case X86ISD::SHUFPD:
+  case X86ISD::PALIGN:
   case X86ISD::PUNPCKHBW:
   case X86ISD::PUNPCKHWD:
   case X86ISD::PUNPCKHDQ: