diff options
Diffstat (limited to 'llvm')
| -rw-r--r-- | llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp index f211244..7e71683 100644 --- a/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp +++ b/llvm/lib/Transforms/Scalar/LoopStrengthReduce.cpp @@ -704,8 +704,9 @@ static bool isHighCostExpansion(const SCEV *S, Value *UVal = U->getValue(); for (Value::use_iterator UI = UVal->use_begin(), UE = UVal->use_end(); UI != UE; ++UI) { - Instruction *User = cast<Instruction>(*UI); - if (User->getOpcode() == Instruction::Mul + // If U is a constant, it may be used by a ConstantExpr. + Instruction *User = dyn_cast<Instruction>(*UI); + if (User && User->getOpcode() == Instruction::Mul && SE.isSCEVable(User->getType())) { return SE.getSCEV(User) == Mul; } |