diff options
Diffstat (limited to 'llvm/lib/Target/AArch64/AArch64InstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/AArch64/AArch64InstrInfo.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp index 1e089ffdec5..a9f54a1bc9e 100644 --- a/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp +++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.cpp @@ -2484,6 +2484,16 @@ void AArch64InstrInfo::copyPhysReg(MachineBasicBlock &MBB, return; } + // Copy a Z register by ORRing with itself. + if (AArch64::ZPRRegClass.contains(DestReg) && + AArch64::ZPRRegClass.contains(SrcReg)) { + assert(Subtarget.hasSVE() && "Unexpected SVE register."); + BuildMI(MBB, I, DL, get(AArch64::ORR_ZZZ), DestReg) + .addReg(SrcReg) + .addReg(SrcReg, getKillRegState(KillSrc)); + return; + } + if (AArch64::GPR64spRegClass.contains(DestReg) && (AArch64::GPR64spRegClass.contains(SrcReg) || SrcReg == AArch64::XZR)) { if (DestReg == AArch64::SP || SrcReg == AArch64::SP) { |
