diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index 017d897def7..d87a0800262 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -1443,6 +1443,11 @@ Constant *ConstantFoldScalarCall(StringRef Name, unsigned IntrinsicID, Type *Ty, ArrayRef<Constant *> Operands, const TargetLibraryInfo *TLI) { if (Operands.size() == 1) { + if (isa<UndefValue>(Operands[0])) { + // cosine(arg) is between -1 and 1. cosine(invalid arg) is NaN + if (IntrinsicID == Intrinsic::cos) + return Constant::getNullValue(Ty); + } if (ConstantFP *Op = dyn_cast<ConstantFP>(Operands[0])) { if (IntrinsicID == Intrinsic::convert_to_fp16) { APFloat Val(Op->getValueAPF()); |
