diff options
Diffstat (limited to 'llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp index eaa694bee5e..4533f4fdf21 100644 --- a/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp +++ b/llvm/lib/Target/SystemZ/SystemZInstrInfo.cpp @@ -869,6 +869,37 @@ void SystemZInstrInfo::copyPhysReg(MachineBasicBlock &MBB, return; } + // Move 128-bit floating-point values between VR128 and FP128. + if (SystemZ::VR128BitRegClass.contains(DestReg) && + SystemZ::FP128BitRegClass.contains(SrcReg)) { + unsigned SrcRegHi = + RI.getMatchingSuperReg(RI.getSubReg(SrcReg, SystemZ::subreg_h64), + SystemZ::subreg_r64, &SystemZ::VR128BitRegClass); + unsigned SrcRegLo = + RI.getMatchingSuperReg(RI.getSubReg(SrcReg, SystemZ::subreg_l64), + SystemZ::subreg_r64, &SystemZ::VR128BitRegClass); + + BuildMI(MBB, MBBI, DL, get(SystemZ::VMRHG), DestReg) + .addReg(SrcRegHi, getKillRegState(KillSrc)) + .addReg(SrcRegLo, getKillRegState(KillSrc)); + return; + } + if (SystemZ::FP128BitRegClass.contains(DestReg) && + SystemZ::VR128BitRegClass.contains(SrcReg)) { + unsigned DestRegHi = + RI.getMatchingSuperReg(RI.getSubReg(DestReg, SystemZ::subreg_h64), + SystemZ::subreg_r64, &SystemZ::VR128BitRegClass); + unsigned DestRegLo = + RI.getMatchingSuperReg(RI.getSubReg(DestReg, SystemZ::subreg_l64), + SystemZ::subreg_r64, &SystemZ::VR128BitRegClass); + + if (DestRegHi != SrcReg) + copyPhysReg(MBB, MBBI, DL, DestRegHi, SrcReg, false); + BuildMI(MBB, MBBI, DL, get(SystemZ::VREPG), DestRegLo) + .addReg(SrcReg, getKillRegState(KillSrc)).addImm(1); + return; + } + // Everything else needs only one instruction. unsigned Opcode; if (SystemZ::GR64BitRegClass.contains(DestReg, SrcReg)) |
