commit 2fd7dbaf1d17adf193b3c42208789a203fe25a53
author Bill Wendling <isanbard@gmail.com> Thu Aug 21 22:36:36 2008 +0000
committer Bill Wendling <isanbard@gmail.com> Thu Aug 21 22:36:36 2008 +0000
tree 5a36e627b06987af8d1f1bc262e2bb3f947acf77
parent 765d3e0013d65c8c563753a012cc531187b6b829

If part of the mask is "undef", then ignore it as we don't care what goes into it.

llvm-svn: 55147

llvm/lib/Target/X86/X86ISelLowering.cpp

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 3b3e2a1..5d8cb1c 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -3479,6 +3479,8 @@
       if (InOrder[i])
         continue;
       SDValue Elt = MaskElts[i];
+      if (Elt.getOpcode() == ISD::UNDEF)
+        continue;
       unsigned EltIdx = cast<ConstantSDNode>(Elt)->getValue();
       SDValue ExtOp = (EltIdx < 8)
         ? DAG.getNode(ISD::EXTRACT_VECTOR_ELT, MVT::i16, V1,