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| author | Eli Friedman <eli.friedman@gmail.com> | 2008-06-19 06:09:51 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2008-06-19 06:09:51 +0000 |
| commit | 12ca3fe5fa63ecd64f7a09c05fc33961e507cdc9 (patch) | |
| tree | c3da22e58f81480e3ded450d2ed84c89d73ba1af /lib | |
| parent | 03d96b966db9f1039c6695482157f864e1e670b0 (diff) | |
| download | external_llvm-12ca3fe5fa63ecd64f7a09c05fc33961e507cdc9.zip external_llvm-12ca3fe5fa63ecd64f7a09c05fc33961e507cdc9.tar.gz external_llvm-12ca3fe5fa63ecd64f7a09c05fc33961e507cdc9.tar.bz2 | |
Fix a bug with <8 x i16> shuffle lowering on X86 where parts of the
shuffle could be skipped. The check is invalid because the loop index i
doesn't correspond to the element actually inserted. The correct check is
already done a few lines earlier, for whether the element is already in
the right spot, so this shouldn't have any effect on the codegen for
code that was already correct.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52486 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 4211508..7962924 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -3445,8 +3445,6 @@ SDOperand LowerVECTOR_SHUFFLEv8i16(SDOperand V1, SDOperand V2, continue; SDOperand Elt = MaskElts[i]; unsigned EltIdx = cast<ConstantSDNode>(Elt)->getValue(); - if (EltIdx == i) - continue; SDOperand ExtOp = (EltIdx < 8) ? DAG.getNode(ISD::EXTRACT_VECTOR_ELT, MVT::i16, V1, DAG.getConstant(EltIdx, PtrVT)) |