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Store live intervals in an IndexedMap.

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It is both smaller and faster than DenseMap.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159029 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-06-22 20:37:52 +00:00
parent df42d41cd6
commit 7fa6784296
2 changed files with 34 additions and 42 deletions
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22
lib/CodeGen/LiveIntervalAnalysis.cpp
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@@ -76,11 +76,9 @@ LiveIntervals::~LiveIntervals() {
void LiveIntervals::releaseMemory() {
// Free the live intervals themselves.
for (DenseMap<unsigned, LiveInterval*>::iterator I = R2IMap.begin(),
E = R2IMap.end(); I != E; ++I)
delete I->second;
R2IMap.clear();
for (unsigned i = 0, e = VirtRegIntervals.size(); i != e; ++i)
delete VirtRegIntervals[TargetRegisterInfo::index2VirtReg(i)];
VirtRegIntervals.clear();
RegMaskSlots.clear();
RegMaskBits.clear();
RegMaskBlocks.clear();
@@ -124,21 +122,17 @@ bool LiveIntervals::runOnMachineFunction(MachineFunction &fn) {
void LiveIntervals::print(raw_ostream &OS, const Module* ) const {
OS << "********** INTERVALS **********\n";
// Dump the physregs.
for (unsigned Reg = 1, RegE = TRI->getNumRegs(); Reg != RegE; ++Reg)
if (const LiveInterval *LI = R2IMap.lookup(Reg))
OS << PrintReg(Reg, TRI) << '\t' << *LI << '\n';
// Dump the regunits.
for (unsigned i = 0, e = RegUnitIntervals.size(); i != e; ++i)
if (LiveInterval *LI = RegUnitIntervals[i])
OS << PrintRegUnit(i, TRI) << " = " << *LI << '\n';
// Dump the virtregs.
for (unsigned Reg = 0, RegE = MRI->getNumVirtRegs(); Reg != RegE; ++Reg)
if (const LiveInterval *LI =
R2IMap.lookup(TargetRegisterInfo::index2VirtReg(Reg)))
OS << PrintReg(LI->reg) << '\t' << *LI << '\n';
for (unsigned i = 0, e = MRI->getNumVirtRegs(); i != e; ++i) {
unsigned Reg = TargetRegisterInfo::index2VirtReg(i);
if (hasInterval(Reg))
OS << PrintReg(Reg) << " = " << getInterval(Reg) << '\n';
}
printInstrs(OS);
}