commit ae0218c914331510e2d7e3cda4d33d0457e2552d
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 7e64f92e3915048036569bd87e1ac8acf8149eb3
parent e85dc49e13265af1b41a14e6359537e14d8f9ecb

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



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55147 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 3b3e2a1..5d8cb1c 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/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,