diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64InstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstrInfo.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp index d5117da..457e540 100644 --- a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp +++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp @@ -5151,7 +5151,15 @@ void AArch64InstrInfo::copyPhysReg(MachineBasicBlock &MBB, // GPR32 zeroing if (AArch64::GPR32spRegClass.contains(DestReg) && SrcReg == AArch64::WZR) { - if (Subtarget.hasZeroCycleZeroingGPR32()) { + if (Subtarget.hasZeroCycleZeroingGPR64() && + !Subtarget.hasZeroCycleZeroingGPR32()) { + MCRegister DestRegX = RI.getMatchingSuperReg(DestReg, AArch64::sub_32, + &AArch64::GPR64spRegClass); + assert(DestRegX.isValid() && "Destination super-reg not valid"); + BuildMI(MBB, I, DL, get(AArch64::MOVZXi), DestRegX) + .addImm(0) + .addImm(AArch64_AM::getShifterImm(AArch64_AM::LSL, 0)); + } else if (Subtarget.hasZeroCycleZeroingGPR32()) { BuildMI(MBB, I, DL, get(AArch64::MOVZWi), DestReg) .addImm(0) .addImm(AArch64_AM::getShifterImm(AArch64_AM::LSL, 0)); |