when no virtual registers have been allocated.
It was only used to resize IndexedMaps, so provide an IndexedMap::resize()
method such that
Map.grow(MRI.getLastVirtReg());
can be replaced with the simpler
Map.resize(MRI.getNumVirtRegs());
This works correctly when no virtuals are allocated, and it bypasses the to/from
index conversions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@123130
91177308-0d34-0410-b5e6-
96231b3b80d8
storage_.reserve(s);
}
+ void resize(typename StorageT::size_type s) {
+ storage_.resize(s, nullVal_);
+ }
+
void clear() {
storage_.clear();
}
void grow(IndexT n) {
unsigned NewSize = toIndex_(n) + 1;
if (NewSize > storage_.size())
- storage_.resize(NewSize, nullVal_);
+ resize(NewSize);
}
bool inBounds(IndexT n) const {
///
unsigned getNumVirtRegs() const { return VRegInfo.size(); }
- /// getLastVirtReg - Return the highest currently assigned virtual register.
- ///
- unsigned getLastVirtReg() const {
- return TargetRegisterInfo::index2VirtReg(getNumVirtRegs() - 1);
- }
-
/// getRegClassVirtRegs - Return the list of virtual registers of the given
/// target register class.
const std::vector<unsigned> &
// initialize the virtual->physical register map to have a 'null'
// mapping for all virtual registers
- unsigned LastVirtReg = MRI->getLastVirtReg();
- StackSlotForVirtReg.grow(LastVirtReg);
+ StackSlotForVirtReg.resize(MRI->getNumVirtRegs());
// Loop over all of the basic blocks, eliminating virtual register references
for (MachineFunction::iterator MBBi = Fn.begin(), MBBe = Fn.end();
}
void VirtRegMap::grow() {
- unsigned LastVirtReg = MF->getRegInfo().getLastVirtReg();
- Virt2PhysMap.grow(LastVirtReg);
- Virt2StackSlotMap.grow(LastVirtReg);
- Virt2ReMatIdMap.grow(LastVirtReg);
- Virt2SplitMap.grow(LastVirtReg);
- Virt2SplitKillMap.grow(LastVirtReg);
- ReMatMap.grow(LastVirtReg);
- ImplicitDefed.resize(MF->getRegInfo().getNumVirtRegs());
+ unsigned NumRegs = MF->getRegInfo().getNumVirtRegs();
+ Virt2PhysMap.resize(NumRegs);
+ Virt2StackSlotMap.resize(NumRegs);
+ Virt2ReMatIdMap.resize(NumRegs);
+ Virt2SplitMap.resize(NumRegs);
+ Virt2SplitKillMap.resize(NumRegs);
+ ReMatMap.resize(NumRegs);
+ ImplicitDefed.resize(NumRegs);
}
unsigned VirtRegMap::createSpillSlot(const TargetRegisterClass *RC) {