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| author | Bill Wendling <isanbard@gmail.com> | 2008-08-21 22:36:36 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2008-08-21 22:36:36 +0000 |
| commit | ae0218c914331510e2d7e3cda4d33d0457e2552d (patch) | |
| tree | 7e64f92e3915048036569bd87e1ac8acf8149eb3 | |
| parent | e85dc49e13265af1b41a14e6359537e14d8f9ecb (diff) | |
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
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 3b3e2a1ae3..5d8cb1cd29 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -3479,6 +3479,8 @@ SDValue LowerVECTOR_SHUFFLEv8i16(SDValue V1, SDValue V2, 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, |