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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-05-21 08:51:09 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-05-21 08:51:09 +0000 |
| commit | 8aaf1979901efcb3b4de27ccb9cce4a57eaa3779 (patch) | |
| tree | eaaa5f242f9ac11dad86e95b0b3f247c5ba9cdd3 /llvm/lib/CodeGen/SelectionDAG | |
| parent | 3b105a063fe68d4e6f6b278b69761cefb7e63bef (diff) | |
| download | bcm5719-llvm-8aaf1979901efcb3b4de27ccb9cce4a57eaa3779.tar.gz bcm5719-llvm-8aaf1979901efcb3b4de27ccb9cce4a57eaa3779.zip | |
DAGCombine: Avoid an edge case where it tried to create an i0 type for (x & 0) == 0.
Fixes PR16083.
llvm-svn: 182357
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp index 36add035159..e8b6c04a48f 100644 --- a/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/TargetLowering.cpp @@ -1162,7 +1162,8 @@ TargetLowering::SimplifySetCC(EVT VT, SDValue N0, SDValue N1, } // Make sure we're not losing bits from the constant. - if (MinBits < C1.getBitWidth() && MinBits >= C1.getActiveBits()) { + if (MinBits > 0 && + MinBits < C1.getBitWidth() && MinBits >= C1.getActiveBits()) { EVT MinVT = EVT::getIntegerVT(*DAG.getContext(), MinBits); if (isTypeDesirableForOp(ISD::SETCC, MinVT)) { // Will get folded away. |
