[llvm-commits] [llvm] r156266 - /llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

[Craig Topper]

Author: ctopper
Date: Sun May  6 13:54:26 2012
New Revision: 156266

URL: http://llvm.org/viewvc/llvm-project?rev=156266&view=rev
Log:
Add VPERMQ/VPERMPD to the list of target specific shuffles that can be looked through for DAG combine purposes.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=156266&r1=156265&r2=156266&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Sun May  6 13:54:26 2012
@@ -2914,6 +2914,7 @@
   case X86ISD::UNPCKH:
   case X86ISD::VPERMILP:
   case X86ISD::VPERM2X128:
+  case X86ISD::VPERMI:
     return true;
   }
 }
@@ -4455,6 +4456,11 @@
     DecodePSHUFLWMask(VT, cast<ConstantSDNode>(ImmN)->getZExtValue(), Mask);
     IsUnary = true;
     break;
+  case X86ISD::VPERMI:
+    ImmN = N->getOperand(N->getNumOperands()-1);
+    DecodeVPERMMask(cast<ConstantSDNode>(ImmN)->getZExtValue(), Mask);
+    IsUnary = true;
+    break;
   case X86ISD::MOVSS:
   case X86ISD::MOVSD: {
     // The index 0 always comes from the first element of the second source,