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Use longer and more explicit names for instance vars (particularly important

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data structures).  Fix the print method to send to the right ostream, not
always cerr.  Delete typedefs that are only used once.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16606 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2004-09-30 02:15:18 +00:00
parent 510a3ea646
commit 7f690e6258
2 changed files with 46 additions and 50 deletions
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62
lib/CodeGen/VirtRegMap.cpp
View File

@ -52,64 +52,62 @@ namespace {
//===----------------------------------------------------------------------===//
void VirtRegMap::grow() {
v2pMap_.grow(mf_->getSSARegMap()->getLastVirtReg());
v2ssMap_.grow(mf_->getSSARegMap()->getLastVirtReg());
Virt2PhysMap.grow(MF.getSSARegMap()->getLastVirtReg());
Virt2StackSlotMap.grow(MF.getSSARegMap()->getLastVirtReg());
}
int VirtRegMap::assignVirt2StackSlot(unsigned virtReg) {
assert(MRegisterInfo::isVirtualRegister(virtReg));
assert(v2ssMap_[virtReg] == NO_STACK_SLOT &&
assert(Virt2StackSlotMap[virtReg] == NO_STACK_SLOT &&
"attempt to assign stack slot to already spilled register");
const TargetRegisterClass* RC = mf_->getSSARegMap()->getRegClass(virtReg);
int frameIndex = mf_->getFrameInfo()->CreateStackObject(RC->getSize(),
RC->getAlignment());
v2ssMap_[virtReg] = frameIndex;
const TargetRegisterClass* RC = MF.getSSARegMap()->getRegClass(virtReg);
int frameIndex = MF.getFrameInfo()->CreateStackObject(RC->getSize(),
RC->getAlignment());
Virt2StackSlotMap[virtReg] = frameIndex;
++NumSpills;
return frameIndex;
}
void VirtRegMap::assignVirt2StackSlot(unsigned virtReg, int frameIndex) {
assert(MRegisterInfo::isVirtualRegister(virtReg));
assert(v2ssMap_[virtReg] == NO_STACK_SLOT &&
assert(Virt2StackSlotMap[virtReg] == NO_STACK_SLOT &&
"attempt to assign stack slot to already spilled register");
v2ssMap_[virtReg] = frameIndex;
Virt2StackSlotMap[virtReg] = frameIndex;
}
void VirtRegMap::virtFolded(unsigned virtReg,
MachineInstr* oldMI,
MachineInstr* newMI) {
// move previous memory references folded to new instruction
MI2VirtMap::iterator i, e;
std::vector<MI2VirtMap::mapped_type> regs;
for (tie(i, e) = mi2vMap_.equal_range(oldMI); i != e; ) {
MI2VirtMapTy::iterator i, e;
std::vector<MI2VirtMapTy::mapped_type> regs;
for (tie(i, e) = MI2VirtMap.equal_range(oldMI); i != e; ) {
regs.push_back(i->second);
mi2vMap_.erase(i++);
MI2VirtMap.erase(i++);
}
for (unsigned i = 0, e = regs.size(); i != e; ++i)
mi2vMap_.insert(std::make_pair(newMI, i));
MI2VirtMap.insert(std::make_pair(newMI, i));
// add new memory reference
mi2vMap_.insert(std::make_pair(newMI, virtReg));
MI2VirtMap.insert(std::make_pair(newMI, virtReg));
}
void VirtRegMap::print(std::ostream& os) const {
const MRegisterInfo* mri = mf_->getTarget().getRegisterInfo();
void VirtRegMap::print(std::ostream &OS) const {
const MRegisterInfo* MRI = MF.getTarget().getRegisterInfo();
std::cerr << "********** REGISTER MAP **********\n";
OS << "********** REGISTER MAP **********\n";
for (unsigned i = MRegisterInfo::FirstVirtualRegister,
e = mf_->getSSARegMap()->getLastVirtReg(); i <= e; ++i) {
if (v2pMap_[i] != (unsigned)VirtRegMap::NO_PHYS_REG)
std::cerr << "[reg" << i << " -> "
<< mri->getName(v2pMap_[i]) << "]\n";
e = MF.getSSARegMap()->getLastVirtReg(); i <= e; ++i) {
if (Virt2PhysMap[i] != (unsigned)VirtRegMap::NO_PHYS_REG)
OS << "[reg" << i << " -> " << MRI->getName(Virt2PhysMap[i]) << "]\n";
}
for (unsigned i = MRegisterInfo::FirstVirtualRegister,
e = mf_->getSSARegMap()->getLastVirtReg(); i <= e; ++i) {
if (v2ssMap_[i] != VirtRegMap::NO_STACK_SLOT)
std::cerr << "[reg" << i << " -> fi#"
<< v2ssMap_[i] << "]\n";
}
std::cerr << '\n';
e = MF.getSSARegMap()->getLastVirtReg(); i <= e; ++i)
if (Virt2StackSlotMap[i] != VirtRegMap::NO_STACK_SLOT)
OS << "[reg" << i << " -> fi#" << Virt2StackSlotMap[i] << "]\n";
OS << '\n';
}
void VirtRegMap::dump() const { print(std::cerr); }
@ -133,7 +131,7 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction& MF,
DEBUG(std::cerr << "********** Function: "
<< MF.getFunction()->getName() << '\n');
const TargetMachine& TM = MF.getTarget();
const MRegisterInfo& mri = *TM.getRegisterInfo();
const MRegisterInfo& MRI = *TM.getRegisterInfo();
DenseMap<bool, VirtReg2IndexFunctor> Loaded;
@ -151,7 +149,7 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction& MF,
unsigned physReg = VRM.getPhys(virtReg);
if (mop.isUse() && VRM.hasStackSlot(mop.getReg()) &&
!Loaded[virtReg]) {
mri.loadRegFromStackSlot(*mbbi, mii, physReg,
MRI.loadRegFromStackSlot(*mbbi, mii, physReg,
VRM.getStackSlot(virtReg));
Loaded[virtReg] = true;
DEBUG(std::cerr << '\t';
@ -160,7 +158,7 @@ bool SimpleSpiller::runOnMachineFunction(MachineFunction& MF,
}
if (mop.isDef() && VRM.hasStackSlot(mop.getReg())) {
mri.storeRegToStackSlot(*mbbi, next(mii), physReg,
MRI.storeRegToStackSlot(*mbbi, next(mii), physReg,
VRM.getStackSlot(virtReg));
++NumStores;
}
@ -304,7 +302,7 @@ void LocalSpiller::eliminateVirtRegsInMbb(MachineBasicBlock &MBB) {
// if we have references to memory operands make sure
// we clear all physical registers that may contain
// the value of the spilled virtual register
VirtRegMap::MI2VirtMap::const_iterator i, e;
VirtRegMap::MI2VirtMapTy::const_iterator i, e;
for (tie(i, e) = VRM->getFoldedVirts(MI); i != e; ++i) {
if (VRM->hasPhys(i->second))
vacateJustPhysReg(MBB, MI, VRM->getPhys(i->second));

34
lib/CodeGen/VirtRegMap.h
View File

@ -26,15 +26,13 @@ namespace llvm {
class VirtRegMap {
public:
typedef DenseMap<unsigned, VirtReg2IndexFunctor> Virt2PhysMap;
typedef DenseMap<int, VirtReg2IndexFunctor> Virt2StackSlotMap;
typedef std::multimap<MachineInstr*, unsigned> MI2VirtMap;
typedef std::multimap<MachineInstr*, unsigned> MI2VirtMapTy;
private:
MachineFunction* mf_;
Virt2PhysMap v2pMap_;
Virt2StackSlotMap v2ssMap_;
MI2VirtMap mi2vMap_;
MachineFunction &MF;
DenseMap<unsigned, VirtReg2IndexFunctor> Virt2PhysMap;
DenseMap<int, VirtReg2IndexFunctor> Virt2StackSlotMap;
MI2VirtMapTy MI2VirtMap;
VirtRegMap(const VirtRegMap&); // DO NOT IMPLEMENT
void operator=(const VirtRegMap&); // DO NOT IMPLEMENT
@ -45,8 +43,8 @@ namespace llvm {
};
public:
VirtRegMap(MachineFunction& mf)
: mf_(&mf), v2pMap_(NO_PHYS_REG), v2ssMap_(NO_STACK_SLOT) {
VirtRegMap(MachineFunction &mf)
: MF(mf), Virt2PhysMap(NO_PHYS_REG), Virt2StackSlotMap(NO_STACK_SLOT) {
grow();
}
@ -58,27 +56,27 @@ namespace llvm {
unsigned getPhys(unsigned virtReg) const {
assert(MRegisterInfo::isVirtualRegister(virtReg));
return v2pMap_[virtReg];
return Virt2PhysMap[virtReg];
}
void assignVirt2Phys(unsigned virtReg, unsigned physReg) {
assert(MRegisterInfo::isVirtualRegister(virtReg) &&
MRegisterInfo::isPhysicalRegister(physReg));
assert(v2pMap_[virtReg] == NO_PHYS_REG &&
assert(Virt2PhysMap[virtReg] == NO_PHYS_REG &&
"attempt to assign physical register to already mapped "
"virtual register");
v2pMap_[virtReg] = physReg;
Virt2PhysMap[virtReg] = physReg;
}
void clearVirt(unsigned virtReg) {
assert(MRegisterInfo::isVirtualRegister(virtReg));
assert(v2pMap_[virtReg] != NO_PHYS_REG &&
assert(Virt2PhysMap[virtReg] != NO_PHYS_REG &&
"attempt to clear a not assigned virtual register");
v2pMap_[virtReg] = NO_PHYS_REG;
Virt2PhysMap[virtReg] = NO_PHYS_REG;
}
void clearAllVirt() {
v2pMap_.clear();
Virt2PhysMap.clear();
grow();
}
@ -88,7 +86,7 @@ namespace llvm {
int getStackSlot(unsigned virtReg) const {
assert(MRegisterInfo::isVirtualRegister(virtReg));
return v2ssMap_[virtReg];
return Virt2StackSlotMap[virtReg];
}
int assignVirt2StackSlot(unsigned virtReg);
@ -97,9 +95,9 @@ namespace llvm {
void virtFolded(unsigned virtReg, MachineInstr* oldMI,
MachineInstr* newMI);
std::pair<MI2VirtMap::const_iterator, MI2VirtMap::const_iterator>
std::pair<MI2VirtMapTy::const_iterator, MI2VirtMapTy::const_iterator>
getFoldedVirts(MachineInstr* MI) const {
return mi2vMap_.equal_range(MI);
return MI2VirtMap.equal_range(MI);
}
void print(std::ostream &OS) const;