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Fixed a bug concering LR spilling. Earlier, added spilled code was not inserted

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into the instruction stream correctly.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1294 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ruchira Sasanka 2001-11-13 23:09:30 +00:00
parent 5f98aca57c
commit f221a2e0a8
2 changed files with 86 additions and 54 deletions
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70
lib/CodeGen/RegAlloc/PhyRegAlloc.cpp
View File

@ -42,7 +42,7 @@ PhyRegAlloc::PhyRegAlloc(Method *M,
MRI( tm.getRegInfo() ),
NumOfRegClasses(MRI.getNumOfRegClasses()),
AddedInstrMap()
/*, PhiInstList()*/
{
// **TODO: use an actual reserved color list
ReservedColorListType *RCL = new ReservedColorListType();
@ -365,29 +365,6 @@ void PhyRegAlloc::updateMachineCode()
if( (TM.getInstrInfo()).isCall( MInst->getOpCode()) )
MRI.insertCallerSavingCode(MInst, *BBI, *this );
// If there are instructions to be added, *before* this machine
// instruction, add them now.
if( AddedInstrMap[ MInst ] ) {
deque<MachineInstr *> &IBef = (AddedInstrMap[MInst])->InstrnsBefore;
if( ! IBef.empty() ) {
deque<MachineInstr *>::iterator AdIt;
for( AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt ) {
if( DEBUG_RA )
cerr << " PREPENDed instr: " << **AdIt << endl;
MInstIterator = MIVec.insert( MInstIterator, *AdIt );
++MInstIterator;
}
}
}
// reset the stack offset for temporary variables since we may
// need that to spill
@ -395,6 +372,9 @@ void PhyRegAlloc::updateMachineCode()
//for(MachineInstr::val_op_const_iterator OpI(MInst);!OpI.done();++OpI) {
// Now replace set the registers for operands in the machine instruction
for(unsigned OpNum=0; OpNum < MInst->getNumOperands(); ++OpNum) {
MachineOperand& Op = MInst->getOperand(OpNum);
@ -451,6 +431,32 @@ void PhyRegAlloc::updateMachineCode()
} // for each operand
// If there are instructions to be added, *before* this machine
// instruction, add them now.
if( AddedInstrMap[ MInst ] ) {
deque<MachineInstr *> &IBef = (AddedInstrMap[MInst])->InstrnsBefore;
if( ! IBef.empty() ) {
deque<MachineInstr *>::iterator AdIt;
for( AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt ) {
if( DEBUG_RA) {
cerr << "For inst " << *MInst;
cerr << " PREPENDed instr: " << **AdIt << endl;
}
MInstIterator = MIVec.insert( MInstIterator, *AdIt );
++MInstIterator;
}
}
}
// If there are instructions to be added *after* this machine
// instruction, add them now
@ -485,9 +491,11 @@ void PhyRegAlloc::updateMachineCode()
for( AdIt = IAft.begin(); AdIt != IAft.end() ; ++AdIt ) {
if(DEBUG_RA)
if(DEBUG_RA) {
cerr << "For inst " << *MInst;
cerr << " APPENDed instr: " << **AdIt << endl;
}
MInstIterator = MIVec.insert( MInstIterator, *AdIt );
++MInstIterator;
}
@ -578,7 +586,7 @@ void PhyRegAlloc::insertCode4SpilledLR(const LiveRange *LR,
if( MIBef )
(AI->InstrnsBefore).push_back(MIBef);
(AI->InstrnsBefore).push_back(AdIMid);
(AI->InstrnsAfter).push_front(AdIMid);
if( MIAft)
(AI->InstrnsAfter).push_front(MIAft);
@ -1055,6 +1063,10 @@ void PhyRegAlloc::allocateRegisters()
// before we call constructLiveRanges (now done in the constructor of
// PhyRegAlloc class).
cout << "\n\n ******** AFTER SCHEDULING **********";
MachineCodeForMethod::get(Meth).dump();
constructLiveRanges(); // create LR info
if( DEBUG_RA )
@ -1115,6 +1127,10 @@ void PhyRegAlloc::allocateRegisters()
MachineCodeForMethod::get(Meth).dump();
printMachineCode(); // only for DEBUGGING
}
// char ch;
//cin >> ch;
}

70
lib/Target/SparcV9/RegAlloc/PhyRegAlloc.cpp
View File

@ -42,7 +42,7 @@ PhyRegAlloc::PhyRegAlloc(Method *M,
MRI( tm.getRegInfo() ),
NumOfRegClasses(MRI.getNumOfRegClasses()),
AddedInstrMap()
/*, PhiInstList()*/
{
// **TODO: use an actual reserved color list
ReservedColorListType *RCL = new ReservedColorListType();
@ -365,29 +365,6 @@ void PhyRegAlloc::updateMachineCode()
if( (TM.getInstrInfo()).isCall( MInst->getOpCode()) )
MRI.insertCallerSavingCode(MInst, *BBI, *this );
// If there are instructions to be added, *before* this machine
// instruction, add them now.
if( AddedInstrMap[ MInst ] ) {
deque<MachineInstr *> &IBef = (AddedInstrMap[MInst])->InstrnsBefore;
if( ! IBef.empty() ) {
deque<MachineInstr *>::iterator AdIt;
for( AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt ) {
if( DEBUG_RA )
cerr << " PREPENDed instr: " << **AdIt << endl;
MInstIterator = MIVec.insert( MInstIterator, *AdIt );
++MInstIterator;
}
}
}
// reset the stack offset for temporary variables since we may
// need that to spill
@ -395,6 +372,9 @@ void PhyRegAlloc::updateMachineCode()
//for(MachineInstr::val_op_const_iterator OpI(MInst);!OpI.done();++OpI) {
// Now replace set the registers for operands in the machine instruction
for(unsigned OpNum=0; OpNum < MInst->getNumOperands(); ++OpNum) {
MachineOperand& Op = MInst->getOperand(OpNum);
@ -451,6 +431,32 @@ void PhyRegAlloc::updateMachineCode()
} // for each operand
// If there are instructions to be added, *before* this machine
// instruction, add them now.
if( AddedInstrMap[ MInst ] ) {
deque<MachineInstr *> &IBef = (AddedInstrMap[MInst])->InstrnsBefore;
if( ! IBef.empty() ) {
deque<MachineInstr *>::iterator AdIt;
for( AdIt = IBef.begin(); AdIt != IBef.end() ; ++AdIt ) {
if( DEBUG_RA) {
cerr << "For inst " << *MInst;
cerr << " PREPENDed instr: " << **AdIt << endl;
}
MInstIterator = MIVec.insert( MInstIterator, *AdIt );
++MInstIterator;
}
}
}
// If there are instructions to be added *after* this machine
// instruction, add them now
@ -485,9 +491,11 @@ void PhyRegAlloc::updateMachineCode()
for( AdIt = IAft.begin(); AdIt != IAft.end() ; ++AdIt ) {
if(DEBUG_RA)
if(DEBUG_RA) {
cerr << "For inst " << *MInst;
cerr << " APPENDed instr: " << **AdIt << endl;
}
MInstIterator = MIVec.insert( MInstIterator, *AdIt );
++MInstIterator;
}
@ -578,7 +586,7 @@ void PhyRegAlloc::insertCode4SpilledLR(const LiveRange *LR,
if( MIBef )
(AI->InstrnsBefore).push_back(MIBef);
(AI->InstrnsBefore).push_back(AdIMid);
(AI->InstrnsAfter).push_front(AdIMid);
if( MIAft)
(AI->InstrnsAfter).push_front(MIAft);
@ -1055,6 +1063,10 @@ void PhyRegAlloc::allocateRegisters()
// before we call constructLiveRanges (now done in the constructor of
// PhyRegAlloc class).
cout << "\n\n ******** AFTER SCHEDULING **********";
MachineCodeForMethod::get(Meth).dump();
constructLiveRanges(); // create LR info
if( DEBUG_RA )
@ -1115,6 +1127,10 @@ void PhyRegAlloc::allocateRegisters()
MachineCodeForMethod::get(Meth).dump();
printMachineCode(); // only for DEBUGGING
}
// char ch;
//cin >> ch;
}