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Update these register allocators to set the PhysRegUsed info in MachineFunction.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@19791 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2005-01-23 22:45:13 +00:00
parent ce9c41e77a
commit b0f31bf19b
3 changed files with 35 additions and 11 deletions
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10
lib/CodeGen/RegAllocIterativeScan.cpp
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@ -51,6 +51,7 @@ namespace {
const TargetMachine* tm_;
const MRegisterInfo* mri_;
LiveIntervals* li_;
bool *PhysRegsUsed;
typedef std::vector<LiveInterval*> IntervalPtrs;
IntervalPtrs unhandled_, fixed_, active_, inactive_, handled_, spilled_;
@ -145,6 +146,11 @@ bool RA::runOnMachineFunction(MachineFunction &fn) {
tm_ = &fn.getTarget();
mri_ = tm_->getRegisterInfo();
li_ = &getAnalysis<LiveIntervals>();
PhysRegsUsed = new bool[mri_->getNumRegs()];
std::fill(PhysRegsUsed, PhysRegsUsed+mri_->getNumRegs(), false);
fn.setUsedPhysRegs(PhysRegsUsed);
if (!prt_.get()) prt_.reset(new PhysRegTracker(*mri_));
vrm_.reset(new VirtRegMap(*mf_));
if (!spiller_.get()) spiller_.reset(createSpiller());
@ -256,8 +262,10 @@ void RA::initIntervalSets() {
for (LiveIntervals::iterator i = li_->begin(), e = li_->end(); i != e; ++i){
unhandled_.push_back(&i->second);
if (MRegisterInfo::isPhysicalRegister(i->second.reg))
if (MRegisterInfo::isPhysicalRegister(i->second.reg)) {
PhysRegsUsed[i->second.reg] = true;
fixed_.push_back(&i->second);
}
}
}