diff options
Diffstat (limited to 'llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp b/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp index eca7f129953..9745235525e 100644 --- a/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp +++ b/llvm/lib/Target/PowerPC/PPCRegisterInfo.cpp @@ -222,45 +222,6 @@ PPCRegisterInfo::avoidWriteAfterWrite(const TargetRegisterClass *RC) const { // Stack Frame Processing methods //===----------------------------------------------------------------------===// -void PPCRegisterInfo:: -eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, - MachineBasicBlock::iterator I) const { - if (MF.getTarget().Options.GuaranteedTailCallOpt && - I->getOpcode() == PPC::ADJCALLSTACKUP) { - // Add (actually subtract) back the amount the callee popped on return. - if (int CalleeAmt = I->getOperand(1).getImm()) { - bool is64Bit = Subtarget.isPPC64(); - CalleeAmt *= -1; - unsigned StackReg = is64Bit ? PPC::X1 : PPC::R1; - unsigned TmpReg = is64Bit ? PPC::X0 : PPC::R0; - unsigned ADDIInstr = is64Bit ? PPC::ADDI8 : PPC::ADDI; - unsigned ADDInstr = is64Bit ? PPC::ADD8 : PPC::ADD4; - unsigned LISInstr = is64Bit ? PPC::LIS8 : PPC::LIS; - unsigned ORIInstr = is64Bit ? PPC::ORI8 : PPC::ORI; - MachineInstr *MI = I; - DebugLoc dl = MI->getDebugLoc(); - - if (isInt<16>(CalleeAmt)) { - BuildMI(MBB, I, dl, TII.get(ADDIInstr), StackReg) - .addReg(StackReg, RegState::Kill) - .addImm(CalleeAmt); - } else { - MachineBasicBlock::iterator MBBI = I; - BuildMI(MBB, MBBI, dl, TII.get(LISInstr), TmpReg) - .addImm(CalleeAmt >> 16); - BuildMI(MBB, MBBI, dl, TII.get(ORIInstr), TmpReg) - .addReg(TmpReg, RegState::Kill) - .addImm(CalleeAmt & 0xFFFF); - BuildMI(MBB, MBBI, dl, TII.get(ADDInstr), StackReg) - .addReg(StackReg, RegState::Kill) - .addReg(TmpReg); - } - } - } - // Simply discard ADJCALLSTACKDOWN, ADJCALLSTACKUP instructions. - MBB.erase(I); -} - /// findScratchRegister - Find a 'free' PPC register. Try for a call-clobbered /// register first and then a spilled callee-saved register if that fails. static |
