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Use SmallSet instead of std::set to save allocations.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54810 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Owen Anderson 2008-08-14 23:41:38 +00:00
parent 0d9deac485
commit bbf5583283
1 changed files with 3 additions and 3 deletions
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6
lib/CodeGen/LiveVariables.cpp
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@ -221,7 +221,7 @@ void LiveVariables::HandlePhysRegUse(unsigned Reg, MachineInstr *MI) {
LastPartialDef->addOperand(MachineOperand::CreateReg(Reg, true/*IsDef*/,
true/*IsImp*/));
PhysRegDef[Reg] = LastPartialDef;
std::set<unsigned> Processed;
SmallSet<unsigned, 8> Processed;
for (const unsigned *SubRegs = TRI->getSubRegisters(Reg);
unsigned SubReg = *SubRegs; ++SubRegs) {
if (Processed.count(SubReg))
@ -351,7 +351,7 @@ bool LiveVariables::HandlePhysRegKill(unsigned Reg) {
// AX<dead> = AL<imp-def>
// = AL<kill>
// AX =
std::set<unsigned> PartUses;
SmallSet<unsigned, 8> PartUses;
for (const unsigned *SubRegs = TRI->getSubRegisters(Reg);
unsigned SubReg = *SubRegs; ++SubRegs) {
if (MachineInstr *Use = PhysRegUse[SubReg]) {
@ -437,7 +437,7 @@ void LiveVariables::HandlePhysRegDef(unsigned Reg, MachineInstr *MI) {
if (MI) {
// Does this extend the live range of a super-register?
std::set<unsigned> Processed;
SmallSet<unsigned, 8> Processed;
for (const unsigned *SuperRegs = TRI->getSuperRegisters(Reg);
unsigned SuperReg = *SuperRegs; ++SuperRegs) {
if (Processed.count(SuperReg))