commit 013bb3dee9d3cb4f2d83e00c3718eb40e2b4d149
author Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Tue Aug 31 22:35:05 2010 +0000
committer Bruno Cardoso Lopes <bruno.cardoso@gmail.com> Tue Aug 31 22:35:05 2010 +0000
tree 4725a747e1a943490f596c01474748bcc4a690cc
parent 0b48eade42022c929fcf0f2afcffdf849c5bd05a

Use x86 specific MOVSLDUP node, add more patterns to match it and remove useless load nodes

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112661 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 d9207d9..9d4fb6d 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -2587,6 +2587,7 @@
   case X86ISD::MOVLHPS:
   case X86ISD::MOVHLPS:
   case X86ISD::MOVSHDUP:
+  case X86ISD::MOVSLDUP:
   case X86ISD::MOVSS:
   case X86ISD::MOVSD:
   case X86ISD::PUNPCKLDQ:
@@ -2600,6 +2601,7 @@
   switch(Opc) {
   default: llvm_unreachable("Unknown x86 shuffle node");
   case X86ISD::MOVSHDUP:
+  case X86ISD::MOVSLDUP:
     return DAG.getNode(Opc, dl, VT, V1);
   }
 
@@ -5168,9 +5170,10 @@
     if (X86::isMOVSHDUPMask(SVOp) && HasSSE3 && V2IsUndef && NumElems == 4)
       return getTargetShuffleNode(X86ISD::MOVSHDUP, dl, VT, V1, DAG);
 
-    if (X86::isMOVSLDUPMask(SVOp) ||
-        X86::isMOVHLPSMask(SVOp) ||
-        X86::isMOVLPMask(SVOp))
+    if (X86::isMOVSLDUPMask(SVOp) && HasSSE3 && V2IsUndef && NumElems == 4)
+      return getTargetShuffleNode(X86ISD::MOVSLDUP, dl, VT, V1, DAG);
+
+    if (X86::isMOVLPMask(SVOp))
       return Op;
   }