diff options
Diffstat (limited to 'contrib/llvm/lib/Target/Mips/MipsSEISelLowering.cpp')
| -rw-r--r-- | contrib/llvm/lib/Target/Mips/MipsSEISelLowering.cpp | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/contrib/llvm/lib/Target/Mips/MipsSEISelLowering.cpp b/contrib/llvm/lib/Target/Mips/MipsSEISelLowering.cpp index 3f865af..2c033ce 100644 --- a/contrib/llvm/lib/Target/Mips/MipsSEISelLowering.cpp +++ b/contrib/llvm/lib/Target/Mips/MipsSEISelLowering.cpp @@ -2883,10 +2883,21 @@ emitCOPY_FW(MachineInstr *MI, MachineBasicBlock *BB) const{ unsigned Ws = MI->getOperand(1).getReg(); unsigned Lane = MI->getOperand(2).getImm(); - if (Lane == 0) - BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Ws, 0, Mips::sub_lo); - else { - unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass); + if (Lane == 0) { + unsigned Wt = Ws; + if (!Subtarget.useOddSPReg()) { + // We must copy to an even-numbered MSA register so that the + // single-precision sub-register is also guaranteed to be even-numbered. + Wt = RegInfo.createVirtualRegister(&Mips::MSA128WEvensRegClass); + + BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Wt).addReg(Ws); + } + + BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_lo); + } else { + unsigned Wt = RegInfo.createVirtualRegister( + Subtarget.useOddSPReg() ? &Mips::MSA128WRegClass : + &Mips::MSA128WEvensRegClass); BuildMI(*BB, MI, DL, TII->get(Mips::SPLATI_W), Wt).addReg(Ws).addImm(Lane); BuildMI(*BB, MI, DL, TII->get(Mips::COPY), Fd).addReg(Wt, 0, Mips::sub_lo); @@ -2948,7 +2959,9 @@ MipsSETargetLowering::emitINSERT_FW(MachineInstr *MI, unsigned Wd_in = MI->getOperand(1).getReg(); unsigned Lane = MI->getOperand(2).getImm(); unsigned Fs = MI->getOperand(3).getReg(); - unsigned Wt = RegInfo.createVirtualRegister(&Mips::MSA128WRegClass); + unsigned Wt = RegInfo.createVirtualRegister( + Subtarget.useOddSPReg() ? &Mips::MSA128WRegClass : + &Mips::MSA128WEvensRegClass); BuildMI(*BB, MI, DL, TII->get(Mips::SUBREG_TO_REG), Wt) .addImm(0) |
