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Remove allocatable registers vector. It is already provided by 

LiveVariables.

llvm-svn: 10830
This commit is contained in:
Alkis Evlogimenos 2004-01-13 22:10:43 +00:00
parent c0e7e5341e
commit 1a01c80f1b
2 changed files with 2 additions and 23 deletions
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2
llvm/include/llvm/CodeGen/LiveIntervals.h
View File

@ -94,8 +94,6 @@ namespace llvm {
MachineBasicBlock::iterator currentInstr_;
LiveVariables* lv_;
std::vector<bool> allocatableRegisters_;
typedef std::map<unsigned, MachineBasicBlock*> MbbIndex2MbbMap;
MbbIndex2MbbMap mbbi2mbbMap_;

23
llvm/lib/CodeGen/LiveIntervals.cpp
View File

@ -65,27 +65,12 @@ bool LiveIntervals::runOnMachineFunction(MachineFunction &fn) {
tm_ = &fn.getTarget();
mri_ = tm_->getRegisterInfo();
lv_ = &getAnalysis<LiveVariables>();
allocatableRegisters_.clear();
mbbi2mbbMap_.clear();
mi2iMap_.clear();
r2iMap_.clear();
r2iMap_.clear();
intervals_.clear();
// mark allocatable registers
allocatableRegisters_.resize(MRegisterInfo::FirstVirtualRegister);
// Loop over all of the register classes...
for (MRegisterInfo::regclass_iterator
rci = mri_->regclass_begin(), rce = mri_->regclass_end();
rci != rce; ++rci) {
// Loop over all of the allocatable registers in the function...
for (TargetRegisterClass::iterator
i = (*rci)->allocation_order_begin(*mf_),
e = (*rci)->allocation_order_end(*mf_); i != e; ++i) {
allocatableRegisters_[*i] = true; // The reg is allocatable!
}
}
// number MachineInstrs
unsigned miIndex = 0;
for (MachineFunction::iterator mbb = mf_->begin(), mbbEnd = mf_->end();
@ -206,11 +191,7 @@ void LiveIntervals::handlePhysicalRegisterDef(MachineBasicBlock* mbb,
MachineBasicBlock::iterator mi,
unsigned reg)
{
DEBUG(std::cerr << "\t\tregister: ";printRegName(reg); std::cerr << '\n');
if (!lv_->getAllocatablePhysicalRegisters()[reg]) {
DEBUG(std::cerr << "\t\t\tnon allocatable register: ignoring\n");
return;
}
DEBUG(std::cerr << "\t\tregister: "; printRegName(reg));
unsigned start = getInstructionIndex(*mi);
unsigned end = start;
@ -259,7 +240,7 @@ void LiveIntervals::handleRegisterDef(MachineBasicBlock* mbb,
unsigned reg)
{
if (reg < MRegisterInfo::FirstVirtualRegister) {
if (allocatableRegisters_[reg]) {
if (lv_->getAllocatablePhysicalRegisters()[reg]) {
handlePhysicalRegisterDef(mbb, mi, reg);
for (const unsigned* as = mri_->getAliasSet(reg); *as; ++as)
handlePhysicalRegisterDef(mbb, mi, *as);