diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86InstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86InstrInfo.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86InstrInfo.cpp b/llvm/lib/Target/X86/X86InstrInfo.cpp index 4ec80d90d9a..20d3cf0d927 100644 --- a/llvm/lib/Target/X86/X86InstrInfo.cpp +++ b/llvm/lib/Target/X86/X86InstrInfo.cpp @@ -3932,6 +3932,12 @@ bool X86InstrInfo::expandPostRAPseudo(MachineInstr &MI) const { MIB.addReg(SrcReg, RegState::ImplicitDefine); return true; } + if (MI.getOpcode() == X86::AVX512_256_SET0) { + // No VLX so we must reference a zmm. + unsigned ZReg = + TRI->getMatchingSuperReg(SrcReg, X86::sub_ymm, &X86::VR512RegClass); + MIB->getOperand(0).setReg(ZReg); + } return Expand2AddrUndef(MIB, get(X86::VPXORDZrr)); } case X86::V_SETALLONES: |
