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| author | Manman Ren <mren@apple.com> | 2012-12-12 01:13:50 +0000 |
|---|---|---|
| committer | Manman Ren <mren@apple.com> | 2012-12-12 01:13:50 +0000 |
| commit | 981b96376a99dacced70cc9b1e870968f426331a (patch) | |
| tree | 6011dae8be083f85a26ea8b257e1ca124321a25d /lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 5da804150d418b8b4956b84013f8f67df553c543 (diff) | |
| download | llvm-981b96376a99dacced70cc9b1e870968f426331a.tar.gz llvm-981b96376a99dacced70cc9b1e870968f426331a.tar.bz2 llvm-981b96376a99dacced70cc9b1e870968f426331a.tar.xz | |
DAGCombine: clamp hi bit in APInt::getBitsSet to avoid assertion
rdar://12838504
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169951 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 1c28d6dcaf..893cf2036a 100644 --- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -7433,7 +7433,8 @@ SDValue DAGCombiner::ReduceLoadOpStoreWidth(SDNode *N) { // start at the previous one. if (ShAmt % NewBW) ShAmt = (((ShAmt + NewBW - 1) / NewBW) * NewBW) - NewBW; - APInt Mask = APInt::getBitsSet(BitWidth, ShAmt, ShAmt + NewBW); + APInt Mask = APInt::getBitsSet(BitWidth, ShAmt, + std::min(BitWidth, ShAmt + NewBW)); if ((Imm & Mask) == Imm) { APInt NewImm = (Imm & Mask).lshr(ShAmt).trunc(NewBW); if (Opc == ISD::AND) |