Use SmallSet instead of std::set to save allocations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54810 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/LiveVariables.cpp b/lib/CodeGen/LiveVariables.cpp
index dbe650c..00a5869 100644
--- a/lib/CodeGen/LiveVariables.cpp
+++ b/lib/CodeGen/LiveVariables.cpp
@@ -221,7 +221,7 @@
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 @@
// 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 @@
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))