diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 28a30d7824a..afd8a498445 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -18028,8 +18028,13 @@ static SDValue LowerSIGN_EXTEND_AVX512(SDValue Op, return SDValue(); MVT ExtVT = VT; - if (!VT.is512BitVector() && !Subtarget.hasVLX()) + if (!VT.is512BitVector() && !Subtarget.hasVLX()) { ExtVT = MVT::getVectorVT(MVT::getIntegerVT(512/NumElts), NumElts); + } else if (VTElt == MVT::i16 || VTElt == MVT::i8) { + // If we don't have BWI support we need to extend 8/16-bit to 32-bit. + // Otherwise we end up with vselects we can't handle. + ExtVT = MVT::getVectorVT(MVT::i32, NumElts); + } SDValue V; if (Subtarget.hasDQI()) { |
