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* Wrap some comments to 80 cols

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* Add const_iterator stuff
* Add a print method, which means that I can now call dump() from the
  debugger.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16612 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-09-30 15:59:17 +00:00
parent d7bf501cc7
commit 70ca358b7d
3 changed files with 44 additions and 32 deletions
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7
include/llvm/CodeGen/LiveIntervalAnalysis.h
View File

@ -81,8 +81,10 @@ namespace llvm {
return getBaseIndex(index) + InstrSlots::STORE;
}
// FIXME: this should really be a const_iterator
typedef Reg2IntervalMap::iterator iterator;
typedef Reg2IntervalMap::const_iterator const_iterator;
const_iterator begin() const { return r2iMap_.begin(); }
const_iterator end() const { return r2iMap_.end(); }
iterator begin() { return r2iMap_.begin(); }
iterator end() { return r2iMap_.end(); }
unsigned getNumIntervals() const { return r2iMap_.size(); }
@ -125,6 +127,9 @@ namespace llvm {
/// runOnMachineFunction - pass entry point
virtual bool runOnMachineFunction(MachineFunction&);
/// print - Implement the dump method.
virtual void print(std::ostream &O) const;
private:
/// computeIntervals - compute live intervals
void computeIntervals();

62
lib/CodeGen/LiveIntervalAnalysis.cpp
View File

@ -164,29 +164,31 @@ 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");
DEBUG(std::cerr << "********** MACHINEINSTRS **********\n");
DEBUG(
for (MachineFunction::iterator mbbi = mf_->begin(), mbbe = mf_->end();
mbbi != mbbe; ++mbbi) {
std::cerr << ((Value*)mbbi->getBasicBlock())->getName() << ":\n";
for (MachineBasicBlock::iterator mii = mbbi->begin(),
mie = mbbi->end(); mii != mie; ++mii) {
std::cerr << getInstructionIndex(mii) << '\t';
mii->print(std::cerr, tm_);
}
});
DEBUG(dump());
return true;
}
std::vector<LiveInterval*> LiveIntervals::addIntervalsForSpills(
const LiveInterval& li,
VirtRegMap& vrm,
int slot)
{
/// print - Implement the dump method.
void LiveIntervals::print(std::ostream &O) const {
O << "********** INTERVALS **********\n";
for (const_iterator I = begin(), E = end(); I != E; ++I)
O << I->second << "\n";
O << "********** MACHINEINSTRS **********\n";
for (MachineFunction::iterator mbbi = mf_->begin(), mbbe = mf_->end();
mbbi != mbbe; ++mbbi) {
O << ((Value*)mbbi->getBasicBlock())->getName() << ":\n";
for (MachineBasicBlock::iterator mii = mbbi->begin(),
mie = mbbi->end(); mii != mie; ++mii) {
O << getInstructionIndex(mii) << '\t';
mii->print(O, tm_);
}
}
}
std::vector<LiveInterval*> LiveIntervals::
addIntervalsForSpills(const LiveInterval &li, VirtRegMap &vrm, int slot) {
// since this is called after the analysis is done we don't know if
// LiveVariables is available
lv_ = getAnalysisToUpdate<LiveVariables>();
@ -230,20 +232,18 @@ std::vector<LiveInterval*> LiveIntervals::addIntervalsForSpills(
goto for_operand;
}
else {
// This is tricky. We need to add information in
// the interval about the spill code so we have to
// use our extra load/store slots.
// This is tricky. We need to add information in the interval about
// the spill code so we have to use our extra load/store slots.
//
// If we have a use we are going to have a load so
// we start the interval from the load slot
// onwards. Otherwise we start from the def slot.
// If we have a use we are going to have a load so we start the
// interval from the load slot onwards. Otherwise we start from the
// def slot.
unsigned start = (mop.isUse() ?
getLoadIndex(index) :
getDefIndex(index));
// If we have a def we are going to have a store
// right after it so we end the interval after the
// use of the next instruction. Otherwise we end
// after the use of this instruction.
// If we have a def we are going to have a store right after it so
// we end the interval after the use of the next
// instruction. Otherwise we end after the use of this instruction.
unsigned end = 1 + (mop.isDef() ?
getStoreIndex(index) :
getUseIndex(index));
@ -255,6 +255,7 @@ std::vector<LiveInterval*> LiveIntervals::addIntervalsForSpills(
vrm.assignVirt2StackSlot(nReg, slot);
LiveInterval& nI = getOrCreateInterval(nReg);
assert(nI.empty());
// the spill weight is now infinity as it
// cannot be spilled again
nI.weight = HUGE_VAL;
@ -262,6 +263,7 @@ std::vector<LiveInterval*> LiveIntervals::addIntervalsForSpills(
DEBUG(std::cerr << " +" << LR);
nI.addRange(LR);
added.push_back(&nI);
// update live variables if it is available
if (lv_)
lv_->addVirtualRegisterKilled(nReg, mi);

7
lib/CodeGen/LiveIntervalAnalysis.h
View File

@ -81,8 +81,10 @@ namespace llvm {
return getBaseIndex(index) + InstrSlots::STORE;
}
// FIXME: this should really be a const_iterator
typedef Reg2IntervalMap::iterator iterator;
typedef Reg2IntervalMap::const_iterator const_iterator;
const_iterator begin() const { return r2iMap_.begin(); }
const_iterator end() const { return r2iMap_.end(); }
iterator begin() { return r2iMap_.begin(); }
iterator end() { return r2iMap_.end(); }
unsigned getNumIntervals() const { return r2iMap_.size(); }
@ -125,6 +127,9 @@ namespace llvm {
/// runOnMachineFunction - pass entry point
virtual bool runOnMachineFunction(MachineFunction&);
/// print - Implement the dump method.
virtual void print(std::ostream &O) const;
private:
/// computeIntervals - compute live intervals
void computeIntervals();