diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 27983a11e51..c383d9252b3 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -19776,9 +19776,13 @@ SDValue X86TargetLowering::LowerFP_TO_INT(SDValue Op, SelectionDAG &DAG) const { Opc = IsSigned ? ISD::STRICT_FP_TO_SINT : ISD::STRICT_FP_TO_UINT; else Opc = IsSigned ? ISD::FP_TO_SINT : ISD::FP_TO_UINT; - Src = DAG.getNode(ISD::INSERT_SUBVECTOR, dl, MVT::v8f64, - DAG.getUNDEF(MVT::v8f64), - Src, DAG.getIntPtrConstant(0, dl)); + // Need to concat with zero vector for strict fp to avoid spurious + // exceptions. + // TODO: Should we just do this for non-strict as well? + SDValue Tmp = IsStrict ? DAG.getConstantFP(0.0, dl, MVT::v8f64) + : DAG.getUNDEF(MVT::v8f64); + Src = DAG.getNode(ISD::INSERT_SUBVECTOR, dl, MVT::v8f64, Tmp, Src, + DAG.getIntPtrConstant(0, dl)); } SDValue Res, Chain; if (IsStrict) { |
