diff options
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index e381d0cace0..10d96131c81 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -837,13 +837,16 @@ X86TargetLowering::X86TargetLowering(const X86TargetMachine &TM, setOperationAction(ISD::SADDSAT, MVT::v8i16, Legal); setOperationAction(ISD::USUBSAT, MVT::v8i16, Legal); setOperationAction(ISD::SSUBSAT, MVT::v8i16, Legal); - // Use widening instead of promotion. - for (auto VT : { MVT::v8i8, MVT::v4i8, MVT::v2i8, - MVT::v4i16, MVT::v2i16 }) { - setOperationAction(ISD::UADDSAT, VT, Custom); - setOperationAction(ISD::SADDSAT, VT, Custom); - setOperationAction(ISD::USUBSAT, VT, Custom); - setOperationAction(ISD::SSUBSAT, VT, Custom); + + if (!ExperimentalVectorWideningLegalization) { + // Use widening instead of promotion. + for (auto VT : { MVT::v8i8, MVT::v4i8, MVT::v2i8, + MVT::v4i16, MVT::v2i16 }) { + setOperationAction(ISD::UADDSAT, VT, Custom); + setOperationAction(ISD::SADDSAT, VT, Custom); + setOperationAction(ISD::USUBSAT, VT, Custom); + setOperationAction(ISD::SSUBSAT, VT, Custom); + } } setOperationAction(ISD::INSERT_VECTOR_ELT, MVT::v8i16, Custom); |
