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Delete dead function. 

llvm-svn: 161242
This commit is contained in:
Jakob Stoklund Olesen 2012-08-03 15:21:21 +00:00
parent 47ac20d4d6
commit 19c4596629
1 changed files with 0 additions and 28 deletions
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28
llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
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@ -93,9 +93,6 @@ namespace {
bool NoUseAfterLastDef(unsigned Reg, MachineBasicBlock *MBB, unsigned Dist,
unsigned &LastDef);
MachineInstr *FindLastUseInMBB(unsigned Reg, MachineBasicBlock *MBB,
unsigned Dist);
bool isProfitableToCommute(unsigned regA, unsigned regB, unsigned regC,
MachineInstr *MI, MachineBasicBlock *MBB,
unsigned Dist);
@ -314,31 +311,6 @@ bool TwoAddressInstructionPass::NoUseAfterLastDef(unsigned Reg,
return !(LastUse > LastDef && LastUse < Dist);
}
MachineInstr *TwoAddressInstructionPass::FindLastUseInMBB(unsigned Reg,
MachineBasicBlock *MBB,
unsigned Dist) {
unsigned LastUseDist = 0;
MachineInstr *LastUse = 0;
for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(Reg),
E = MRI->reg_end(); I != E; ++I) {
MachineOperand &MO = I.getOperand();
MachineInstr *MI = MO.getParent();
if (MI->getParent() != MBB || MI->isDebugValue())
continue;
DenseMap<MachineInstr*, unsigned>::iterator DI = DistanceMap.find(MI);
if (DI == DistanceMap.end())
continue;
if (DI->second >= Dist)
continue;
if (MO.isUse() && DI->second > LastUseDist) {
LastUse = DI->first;
LastUseDist = DI->second;
}
}
return LastUse;
}
/// isCopyToReg - Return true if the specified MI is a copy instruction or
/// a extract_subreg instruction. It also returns the source and destination
/// registers and whether they are physical registers by reference.