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| author | Chris Lattner <sabre@nondot.org> | 2006-04-15 23:48:05 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2006-04-15 23:48:05 +0000 |
| commit | 24acbe46c0c63c2b91ceebc7c24165a268287a1f (patch) | |
| tree | f17bf918d4d57f435cc429af923412ab7f9bebfe /llvm/lib/Target/PowerPC/PPCISelLowering.cpp | |
| parent | 873202fabd28355e52bf273a63d4ea0cfbeef972 (diff) | |
| download | bcm5719-llvm-24acbe46c0c63c2b91ceebc7c24165a268287a1f.tar.gz bcm5719-llvm-24acbe46c0c63c2b91ceebc7c24165a268287a1f.zip | |
Fix a crash when faced with a shuffle vector that has an undef in its mask.
llvm-svn: 27726
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCISelLowering.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp index 8fa5f84db53..826ff4ea819 100644 --- a/llvm/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/llvm/lib/Target/PowerPC/PPCISelLowering.cpp @@ -1116,7 +1116,11 @@ static SDOperand LowerVECTOR_SHUFFLE(SDOperand Op, SelectionDAG &DAG) { std::vector<SDOperand> ResultMask; for (unsigned i = 0, e = PermMask.getNumOperands(); i != e; ++i) { - unsigned SrcElt =cast<ConstantSDNode>(PermMask.getOperand(i))->getValue(); + unsigned SrcElt; + if (PermMask.getOperand(i).getOpcode() == ISD::UNDEF) + SrcElt = 0; + else + SrcElt = cast<ConstantSDNode>(PermMask.getOperand(i))->getValue(); for (unsigned j = 0; j != BytesPerElement; ++j) ResultMask.push_back(DAG.getConstant(SrcElt*BytesPerElement+j, |
