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| author | Scott Linder <scott@scottlinder.com> | 2018-10-31 19:57:36 +0000 |
|---|---|---|
| committer | Scott Linder <scott@scottlinder.com> | 2018-10-31 19:57:36 +0000 |
| commit | 92bb783cfe11785ef5d4de5d7fc261387feb327d (patch) | |
| tree | e0a29c8d8ef73501c22a7234092da6ab0a029f22 /llvm/lib/CodeGen/SelectionDAG | |
| parent | 03d603be9d1b4e4ca536dc7beb318f3f515847ad (diff) | |
| download | bcm5719-llvm-92bb783cfe11785ef5d4de5d7fc261387feb327d.tar.gz bcm5719-llvm-92bb783cfe11785ef5d4de5d7fc261387feb327d.zip | |
[SelectionDAG] Handle constant range [0,1) in lowerRangeToAssertZExt
lowerRangeToAssertZExt currently relies on something like EarlyCSE having
eliminated the constant range [0,1). At -O0 this leads to an assert.
Differential Revision: https://reviews.llvm.org/D53888
llvm-svn: 345770
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp index 5ecb2abbcbf..dac99eddec3 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp @@ -7993,7 +7993,8 @@ SDValue SelectionDAGBuilder::lowerRangeToAssertZExt(SelectionDAG &DAG, return Op; APInt Hi = CR.getUnsignedMax(); - unsigned Bits = Hi.getActiveBits(); + unsigned Bits = std::max(Hi.getActiveBits(), + static_cast<unsigned>(IntegerType::MIN_INT_BITS)); EVT SmallVT = EVT::getIntegerVT(*DAG.getContext(), Bits); |
