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Code clean up; no functionality change.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@121172 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2010-12-07 19:59:34 +00:00
parent a6399ae089
commit 9801b5c822
1 changed files with 8 additions and 11 deletions
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19
lib/Target/ARM/ARMFrameInfo.cpp
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@ -508,11 +508,7 @@ void ARMFrameInfo::emitPushInst(MachineBasicBlock &MBB,
DebugLoc DL;
if (MI != MBB.end()) DL = MI->getDebugLoc();
MachineInstrBuilder MIB = BuildMI(MF, DL, TII.get(Opc));
MIB.addReg(ARM::SP, getDefRegState(true));
MIB.addReg(ARM::SP);
AddDefaultPred(MIB);
bool NumRegs = false;
SmallVector<std::pair<unsigned,bool>, 4> Regs;
for (unsigned i = CSI.size(); i != 0; --i) {
unsigned Reg = CSI[i-1].getReg();
if (!(Func)(Reg, STI.isTargetDarwin())) continue;
@ -530,15 +526,16 @@ void ARMFrameInfo::emitPushInst(MachineBasicBlock &MBB,
if (isKill)
MBB.addLiveIn(Reg);
NumRegs = true;
MIB.addReg(Reg, getKillRegState(isKill));
Regs.push_back(std::make_pair(Reg, isKill));
}
// It's illegal to emit push instruction without operands.
if (NumRegs)
MBB.insert(MI, &*MIB);
else
MF.DeleteMachineInstr(MIB);
if (!Regs.empty()) {
MachineInstrBuilder MIB = AddDefaultPred(BuildMI(MBB, MI, DL, TII.get(Opc),
ARM::SP).addReg(ARM::SP));
for (unsigned i = 0, e = Regs.size(); i < e; ++i)
MIB.addReg(Regs[i].first, getKillRegState(Regs[i].second));
}
}
bool ARMFrameInfo::spillCalleeSavedRegisters(MachineBasicBlock &MBB,