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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 | 730b45694bd910efe0c5c38897854222f74c92bb (patch) | |
| tree | 3260171066ab16d4dd1686fa32708fd43f628406 /lib/Target | |
| parent | 6e94af75de7f21b667046063dde49181c233b973 (diff) | |
| download | external_llvm-730b45694bd910efe0c5c38897854222f74c92bb.zip external_llvm-730b45694bd910efe0c5c38897854222f74c92bb.tar.gz external_llvm-730b45694bd910efe0c5c38897854222f74c92bb.tar.bz2 | |
Fix a crash when faced with a shuffle vector that has an undef in its mask.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27726 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target')
| -rw-r--r-- | lib/Target/PowerPC/PPCISelLowering.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp index 8fa5f84..826ff4e 100644 --- a/lib/Target/PowerPC/PPCISelLowering.cpp +++ b/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, |