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Change std::map<unsigned, LiveInterval*> into a std::map<unsigned,

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LiveInterval>. This saves some space and removes the pointer
indirection caused by following the pointer.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15167 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alkis Evlogimenos
2004-07-24 11:44:15 +00:00
parent 7d91e49ff7
commit a1613db62f
8 changed files with 85 additions and 52 deletions
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15
lib/CodeGen/LiveIntervalAnalysis.cpp
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@@ -76,11 +76,7 @@ void LiveIntervals::releaseMemory()
{
mi2iMap_.clear();
i2miMap_.clear();
for (std::map<unsigned, LiveInterval*>::iterator I = r2iMap_.begin(),
E = r2iMap_.end(); I != E; ++I)
delete I->second; // free all intervals.
r2iMap_.clear();
r2rMap_.clear();
}
@@ -112,7 +108,7 @@ bool LiveIntervals::runOnMachineFunction(MachineFunction &fn) {
#if 1
DEBUG(std::cerr << "********** INTERVALS **********\n");
DEBUG(for (iterator I = begin(), E = end(); I != E; ++I)
std::cerr << *I->second << "\n");
std::cerr << I->second << "\n");
#endif
// join intervals if requested
@@ -169,7 +165,7 @@ bool LiveIntervals::runOnMachineFunction(MachineFunction &fn) {
DEBUG(std::cerr << "********** INTERVALS **********\n");
DEBUG (for (iterator I = begin(), E = end(); I != E; ++I)
std::cerr << *I->second << "\n");
std::cerr << I->second << "\n");
DEBUG(std::cerr << "********** MACHINEINSTRS **********\n");
DEBUG(
for (MachineFunction::iterator mbbi = mf_->begin(), mbbe = mf_->end();
@@ -561,7 +557,6 @@ void LiveIntervals::joinIntervalsInMachineBB(MachineBasicBlock *MBB) {
if ((TriviallyJoinable || !IntB.joinable(IntA, MIDefIdx)) &&
!overlapsAliases(&IntA, &IntB)) {
IntB.join(IntA, MIDefIdx);
delete r2iMap_[regA]; // Delete the dead interval
if (!MRegisterInfo::isPhysicalRegister(regA)) {
r2iMap_.erase(regA);
@@ -571,7 +566,7 @@ void LiveIntervals::joinIntervalsInMachineBB(MachineBasicBlock *MBB) {
// the physreg information.
r2rMap_[regB] = regA;
IntB.reg = regA;
r2iMap_[regA] = r2iMap_[regB];
IntA.swap(IntB);
r2iMap_.erase(regB);
}
DEBUG(std::cerr << "Joined. Result = " << IntB << "\n");
@@ -661,8 +656,8 @@ bool LiveIntervals::overlapsAliases(const LiveInterval *LHS,
return false;
}
LiveInterval *LiveIntervals::createInterval(unsigned reg) const {
LiveInterval LiveIntervals::createInterval(unsigned reg) {
float Weight = MRegisterInfo::isPhysicalRegister(reg) ? HUGE_VAL :0.0F;
return new LiveInterval(reg, Weight);
return LiveInterval(reg, Weight);
}