diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp b/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp index 0bccf15c6ac..0ff852cf15a 100644 --- a/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp +++ b/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp @@ -689,19 +689,15 @@ void PPCRegisterInfo::lowerCRSpilling(MachineBasicBlock::iterator II, const TargetRegisterClass *GPRC = &PPC::GPRCRegClass; const TargetRegisterClass *RC = Subtarget.isPPC64() ? G8RC : GPRC; unsigned Reg = findScratchRegister(II, RS, RC, SPAdj); + unsigned SrcReg = MI.getOperand(0).getReg(); // We need to store the CR in the low 4-bits of the saved value. First, issue - // an MFCR to save all of the CRBits. Add an implicit kill of the CR. - if (!MI.getOperand(0).isKill()) - BuildMI(MBB, II, dl, TII.get(PPC::MFCR), Reg); - else - // Implicitly kill the CR register. - BuildMI(MBB, II, dl, TII.get(PPC::MFCR), Reg) - .addReg(MI.getOperand(0).getReg(), RegState::ImplicitKill); + // an MFCRpsued to save all of the CRBits and, if needed, kill the SrcReg. + BuildMI(MBB, II, dl, TII.get(PPC::MFCRpseud), Reg) + .addReg(SrcReg, getKillRegState(MI.getOperand(0).isKill())); // If the saved register wasn't CR0, shift the bits left so that they are in // CR0's slot. - unsigned SrcReg = MI.getOperand(0).getReg(); if (SrcReg != PPC::CR0) // rlwinm rA, rA, ShiftBits, 0, 31. BuildMI(MBB, II, dl, TII.get(PPC::RLWINM), Reg) |
