[llvm-commits] [llvm] r45631 - /llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

[Nate Begeman]

Author: sampo
Date: Sat Jan  5 14:51:30 2008
New Revision: 45631

URL: http://llvm.org/viewvc/llvm-project?rev=45631&view=rev
Log:
Remove an incorrect optimization that is performed correctly by
the target independent legalizer.

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=45631&r1=45630&r2=45631&view=diff

==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Sat Jan  5 14:51:30 2008
@@ -3608,17 +3608,7 @@
       N2 = DAG.getConstant(cast<ConstantSDNode>(N2)->getValue(),getPointerTy());
     return DAG.getNode(X86ISD::PINSRW, VT, N0, N1, N2);
   }
-
-  N1 = DAG.getNode(ISD::SCALAR_TO_VECTOR, VT, N1);
-  unsigned Idx = cast<ConstantSDNode>(N2)->getValue();
-  MVT::ValueType MaskVT = MVT::getIntVectorWithNumElements(4);
-  MVT::ValueType MaskEVT = MVT::getVectorElementType(MaskVT);
-  SmallVector<SDOperand, 4> MaskVec;
-  for (unsigned i = 0; i < 4; ++i)
-    MaskVec.push_back(DAG.getConstant((i == Idx) ? i+4 : i, MaskEVT));
-  return DAG.getNode(ISD::VECTOR_SHUFFLE, VT, N0, N1,
-                     DAG.getNode(ISD::BUILD_VECTOR, MaskVT,
-                                 &MaskVec[0], MaskVec.size()));
+  return SDOperand();
 }
 
 SDOperand