diff options
| 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 | f19b8b018be4b0478f741bf35287db3488fda8d6 (patch) | |
| tree | badb6014825a9a7bd8bc2e9dcaf7a4aa37ce5972 /lib/CodeGen/SelectionDAG/TargetLowering.cpp | |
| parent | 275428fe4abd4bd690456d29c7c54143d653cb4f (diff) | |
| download | llvm-f19b8b018be4b0478f741bf35287db3488fda8d6.tar.gz llvm-f19b8b018be4b0478f741bf35287db3488fda8d6.tar.bz2 llvm-f19b8b018be4b0478f741bf35287db3488fda8d6.tar.xz | |
DAGCombine: Avoid an edge case where it tried to create an i0 type for (x & 0) == 0.
Fixes PR16083.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@182357 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/TargetLowering.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/TargetLowering.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/TargetLowering.cpp b/lib/CodeGen/SelectionDAG/TargetLowering.cpp index 36add03515..e8b6c04a48 100644 --- a/lib/CodeGen/SelectionDAG/TargetLowering.cpp +++ b/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. |