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Switch a number of loops in lib/CodeGen over to range-based for-loops, now that

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the MachineRegisterInfo iterators are compatible with it.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204075 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson
2014-03-17 19:36:09 +00:00
parent 7ad87e4d3b
commit 92fca73d52
17 changed files with 88 additions and 143 deletions
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16
lib/CodeGen/TwoAddressInstructionPass.cpp
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@ -315,9 +315,7 @@ bool TwoAddressInstructionPass::noUseAfterLastDef(unsigned Reg, unsigned Dist,
unsigned &LastDef) {
LastDef = 0;
unsigned LastUse = Dist;
for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(Reg),
E = MRI->reg_end(); I != E; ++I) {
MachineOperand &MO = *I;
for (MachineOperand &MO : MRI->reg_operands(Reg)) {
MachineInstr *MI = MO.getParent();
if (MI->getParent() != MBB || MI->isDebugValue())
continue;
@ -914,19 +912,17 @@ rescheduleMIBelowKill(MachineBasicBlock::iterator &mi,
/// instruction too close to the defs of its register dependencies.
bool TwoAddressInstructionPass::isDefTooClose(unsigned Reg, unsigned Dist,
MachineInstr *MI) {
for (MachineRegisterInfo::def_instr_iterator DI = MRI->def_instr_begin(Reg),
DE = MRI->def_instr_end(); DI != DE; ++DI) {
MachineInstr *DefMI = &*DI;
if (DefMI->getParent() != MBB || DefMI->isCopy() || DefMI->isCopyLike())
for (MachineInstr &DefMI : MRI->def_instructions(Reg)) {
if (DefMI.getParent() != MBB || DefMI.isCopy() || DefMI.isCopyLike())
continue;
if (DefMI == MI)
if (&DefMI == MI)
return true; // MI is defining something KillMI uses
DenseMap<MachineInstr*, unsigned>::iterator DDI = DistanceMap.find(DefMI);
DenseMap<MachineInstr*, unsigned>::iterator DDI = DistanceMap.find(&DefMI);
if (DDI == DistanceMap.end())
return true; // Below MI
unsigned DefDist = DDI->second;
assert(Dist > DefDist && "Visited def already?");
if (TII->getInstrLatency(InstrItins, DefMI) > (Dist - DefDist))
if (TII->getInstrLatency(InstrItins, &DefMI) > (Dist - DefDist))
return true;
}
return false;