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Simplify logic now that r182490 is in place. No functional change intended. 

llvm-svn: 182526
This commit is contained in:
Chad Rosier 2013-05-22 22:26:05 +00:00
parent 5f3601016c
commit c7505ef8ba
1 changed files with 14 additions and 15 deletions
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29
llvm/lib/CodeGen/LiveVariables.cpp
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@ -217,8 +217,8 @@ MachineInstr *LiveVariables::FindLastPartialDef(unsigned Reg,
continue;
unsigned DefReg = MO.getReg();
if (TRI->isSubRegister(Reg, DefReg)) {
PartDefRegs.insert(DefReg);
for (MCSubRegIterator SubRegs(DefReg, TRI); SubRegs.isValid(); ++SubRegs)
for (MCSubRegIterator SubRegs(DefReg, TRI, /*IncludeSelf=*/true);
SubRegs.isValid(); ++SubRegs)
PartDefRegs.insert(*SubRegs);
}
}
@ -271,8 +271,8 @@ void LiveVariables::HandlePhysRegUse(unsigned Reg, MachineInstr *MI) {
true/*IsImp*/));
// Remember this use.
PhysRegUse[Reg] = MI;
for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs)
for (MCSubRegIterator SubRegs(Reg, TRI, /*IncludeSelf=*/true);
SubRegs.isValid(); ++SubRegs)
PhysRegUse[*SubRegs] = MI;
}
@ -350,8 +350,8 @@ bool LiveVariables::HandlePhysRegKill(unsigned Reg, MachineInstr *MI) {
continue;
}
if (MachineInstr *Use = PhysRegUse[SubReg]) {
PartUses.insert(SubReg);
for (MCSubRegIterator SS(SubReg, TRI); SS.isValid(); ++SS)
for (MCSubRegIterator SS(SubReg, TRI, /*IncludeSelf=*/true); SS.isValid();
++SS)
PartUses.insert(*SS);
unsigned Dist = DistanceMap[Use];
if (Dist > LastRefOrPartRefDist) {
@ -387,8 +387,8 @@ bool LiveVariables::HandlePhysRegKill(unsigned Reg, MachineInstr *MI) {
LastSubRef->addRegisterKilled(SubReg, TRI, true);
else {
LastRefOrPartRef->addRegisterKilled(SubReg, TRI, true);
PhysRegUse[SubReg] = LastRefOrPartRef;
for (MCSubRegIterator SS(SubReg, TRI); SS.isValid(); ++SS)
for (MCSubRegIterator SS(SubReg, TRI, /*IncludeSelf=*/true);
SS.isValid(); ++SS)
PhysRegUse[*SS] = LastRefOrPartRef;
}
for (MCSubRegIterator SS(SubReg, TRI); SS.isValid(); ++SS)
@ -445,8 +445,8 @@ void LiveVariables::HandlePhysRegDef(unsigned Reg, MachineInstr *MI,
// What parts of the register are previously defined?
SmallSet<unsigned, 32> Live;
if (PhysRegDef[Reg] || PhysRegUse[Reg]) {
Live.insert(Reg);
for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs)
for (MCSubRegIterator SubRegs(Reg, TRI, /*IncludeSelf=*/true);
SubRegs.isValid(); ++SubRegs)
Live.insert(*SubRegs);
} else {
for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs) {
@ -460,8 +460,8 @@ void LiveVariables::HandlePhysRegDef(unsigned Reg, MachineInstr *MI,
if (Live.count(SubReg))
continue;
if (PhysRegDef[SubReg] || PhysRegUse[SubReg]) {
Live.insert(SubReg);
for (MCSubRegIterator SS(SubReg, TRI); SS.isValid(); ++SS)
for (MCSubRegIterator SS(SubReg, TRI, /*IncludeSelf=*/true);
SS.isValid(); ++SS)
Live.insert(*SS);
}
}
@ -488,9 +488,8 @@ void LiveVariables::UpdatePhysRegDefs(MachineInstr *MI,
while (!Defs.empty()) {
unsigned Reg = Defs.back();
Defs.pop_back();
PhysRegDef[Reg] = MI;
PhysRegUse[Reg] = NULL;
for (MCSubRegIterator SubRegs(Reg, TRI); SubRegs.isValid(); ++SubRegs) {
for (MCSubRegIterator SubRegs(Reg, TRI, /*IncludeSelf=*/true);
SubRegs.isValid(); ++SubRegs) {
unsigned SubReg = *SubRegs;
PhysRegDef[SubReg] = MI;
PhysRegUse[SubReg] = NULL;