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Added special register class containing (for now) %fsr.

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Fixed spilling of %fcc[0-3] which are part of %fsr.
Moved some machine-independent reg-class code to class TargetRegInfo
from SparcReg{Class,}Info.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6339 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vikram S. Adve 2003-05-27 00:02:22 +00:00
parent bd4ecf769d
commit 78a4f23a8e
5 changed files with 111 additions and 158 deletions
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26
lib/Target/SparcV9/SparcV9AsmPrinter.cpp
View File

@ -302,7 +302,7 @@ private :
void emitMachineInst(const MachineInstr *MI);
unsigned int printOperands(const MachineInstr *MI, unsigned int opNum);
void printOneOperand(const MachineOperand &Op);
void printOneOperand(const MachineOperand &Op, MachineOpCode opCode);
bool OpIsBranchTargetLabel(const MachineInstr *MI, unsigned int opNum);
bool OpIsMemoryAddressBase(const MachineInstr *MI, unsigned int opNum);
@ -341,10 +341,10 @@ SparcFunctionAsmPrinter::OpIsMemoryAddressBase(const MachineInstr *MI,
}
#define PrintOp1PlusOp2(mop1, mop2) \
printOneOperand(mop1); \
#define PrintOp1PlusOp2(mop1, mop2, opCode) \
printOneOperand(mop1, opCode); \
toAsm << "+"; \
printOneOperand(mop2);
printOneOperand(mop2, opCode);
unsigned int
SparcFunctionAsmPrinter::printOperands(const MachineInstr *MI,
@ -354,26 +354,26 @@ SparcFunctionAsmPrinter::printOperands(const MachineInstr *MI,
if (OpIsBranchTargetLabel(MI, opNum))
{
PrintOp1PlusOp2(mop, MI->getOperand(opNum+1));
PrintOp1PlusOp2(mop, MI->getOperand(opNum+1), MI->getOpCode());
return 2;
}
else if (OpIsMemoryAddressBase(MI, opNum))
{
toAsm << "[";
PrintOp1PlusOp2(mop, MI->getOperand(opNum+1));
PrintOp1PlusOp2(mop, MI->getOperand(opNum+1), MI->getOpCode());
toAsm << "]";
return 2;
}
else
{
printOneOperand(mop);
printOneOperand(mop, MI->getOpCode());
return 1;
}
}
void
SparcFunctionAsmPrinter::printOneOperand(const MachineOperand &mop)
SparcFunctionAsmPrinter::printOneOperand(const MachineOperand &mop,
MachineOpCode opCode)
{
bool needBitsFlag = true;
@ -394,13 +394,13 @@ SparcFunctionAsmPrinter::printOneOperand(const MachineOperand &mop)
case MachineOperand::MO_CCRegister:
case MachineOperand::MO_MachineRegister:
{
int RegNum = (int)mop.getAllocatedRegNum();
int regNum = (int)mop.getAllocatedRegNum();
// better to print code with NULL registers than to die
if (RegNum == Target.getRegInfo().getInvalidRegNum()) {
if (regNum == Target.getRegInfo().getInvalidRegNum()) {
// better to print code with NULL registers than to die
toAsm << "<NULL VALUE>";
} else {
toAsm << "%" << Target.getRegInfo().getUnifiedRegName(RegNum);
toAsm << "%" << Target.getRegInfo().getUnifiedRegName(regNum);
}
break;
}

4
lib/Target/SparcV9/SparcV9InstrSelection.cpp
View File

@ -1318,8 +1318,8 @@ ForwardOperand(InstructionNode* treeNode,
for (unsigned i=0,numOps=minstr->getNumImplicitRefs(); i<numOps; ++i)
if (minstr->getImplicitRef(i) == unusedOp)
minstr->setImplicitRef(i, fwdOp,
minstr->implicitRefIsDefined(i),
minstr->implicitRefIsDefinedAndUsed(i));
minstr->getImplicitOp(i).opIsDefOnly(),
minstr->getImplicitOp(i).opIsDefAndUse());
}
}
}

60
lib/Target/SparcV9/SparcV9Internals.h
View File

@ -255,7 +255,8 @@ class UltraSparcRegInfo : public TargetRegInfo {
IntRegClassID, // Integer
FloatRegClassID, // Float (both single/double)
IntCCRegClassID, // Int Condition Code
FloatCCRegClassID // Float Condition code
FloatCCRegClassID, // Float Condition code
SpecialRegClassID // Special (unallocated) registers
};
@ -268,7 +269,8 @@ class UltraSparcRegInfo : public TargetRegInfo {
FPSingleRegType,
FPDoubleRegType,
IntCCRegType,
FloatCCRegType
FloatCCRegType,
SpecialRegType
};
// **** WARNING: If the above enum order is changed, also modify
@ -308,6 +310,9 @@ class UltraSparcRegInfo : public TargetRegInfo {
std::vector<MachineInstr *>& AddedInstrnsBefore)
const;
// Get the register type for a register identified different ways.
// The first function is a helper used by the all the hoter functions.
int getRegTypeForClassAndType(unsigned regClassID, const Type* type) const;
int getRegType(const Type* type) const;
int getRegType(const LiveRange *LR) const;
int getRegType(int unifiedRegNum) const;
@ -352,7 +357,6 @@ public:
// To find the register class to which a specified register belongs
//
unsigned getRegClassIDOfReg(int unifiedRegNum) const;
unsigned getRegClassIDOfRegType(int regType) const;
// getZeroRegNum - returns the register that contains always zero this is the
@ -403,56 +407,8 @@ public:
// method used for printing a register for debugging purposes
//
static void printReg(const LiveRange *LR);
// Each register class has a seperate space for register IDs. To convert
// a regId in a register class to a common Id, or vice versa,
// we use the folloing methods.
//
// This method provides a unique number for each register
inline int getUnifiedRegNum(unsigned regClassID, int reg) const {
if (regClassID == IntRegClassID) {
assert(reg < 32 && "Invalid reg. number");
return reg;
}
else if (regClassID == FloatRegClassID) {
assert(reg < 64 && "Invalid reg. number");
return reg + 32; // we have 32 int regs
}
else if (regClassID == FloatCCRegClassID) {
assert(reg < 4 && "Invalid reg. number");
return reg + 32 + 64; // 32 int, 64 float
}
else if (regClassID == IntCCRegClassID ) {
assert(reg == 0 && "Invalid reg. number");
return reg + 4+ 32 + 64; // only one int CC reg
}
else if (reg==InvalidRegNum) {
return InvalidRegNum;
}
else
assert(0 && "Invalid register class");
return 0;
}
void printReg(const LiveRange *LR) const;
// This method converts the unified number to the number in its class,
// and returns the class ID in regClassID.
inline int getClassRegNum(int ureg, unsigned& regClassID) const {
if (ureg < 32) { regClassID = IntRegClassID; return ureg; }
else if (ureg < 32+64) { regClassID = FloatRegClassID; return ureg-32; }
else if (ureg < 4 +96) { regClassID = FloatCCRegClassID; return ureg-96; }
else if (ureg < 1 +100) { regClassID = IntCCRegClassID; return ureg-100;}
else if (ureg == InvalidRegNum) { return InvalidRegNum; }
else { assert(0 && "Invalid unified register number"); }
return 0;
}
// Returns the assembly-language name of the specified machine register.
//
virtual const char * const getUnifiedRegName(int reg) const;
// returns the # of bytes of stack space allocated for each register
// type. For Sparc, currently we allocate 8 bytes on stack for all
// register types. We can optimize this later if necessary to save stack

37
lib/Target/SparcV9/SparcV9RegClassInfo.h
View File

@ -63,7 +63,7 @@ struct SparcIntRegClass : public TargetRegClassInfo {
StartOfAllRegs = o0,
};
static const char * const getRegName(unsigned reg);
const char * const getRegName(unsigned reg) const;
};
@ -104,7 +104,7 @@ public:
StartOfAllRegs = f0,
};
static const char * const getRegName(unsigned reg);
const char * const getRegName(unsigned reg) const;
};
@ -138,7 +138,7 @@ struct SparcIntCCRegClass : public TargetRegClassInfo {
xcc, ccr // only one is available - see the note above
};
static const char * const getRegName(unsigned reg);
const char * const getRegName(unsigned reg) const;
};
@ -146,12 +146,12 @@ struct SparcIntCCRegClass : public TargetRegClassInfo {
//-----------------------------------------------------------------------------
// Float CC Register Class
// Only 4 Float CC registers are available
// Only 4 Float CC registers are available for allocation.
//-----------------------------------------------------------------------------
struct SparcFloatCCRegClass : public TargetRegClassInfo {
SparcFloatCCRegClass(unsigned ID)
: TargetRegClassInfo(ID, 4, 4) { }
: TargetRegClassInfo(ID, 4, 5) { }
void colorIGNode(IGNode *Node, std::vector<bool> &IsColorUsedArr) const {
for(unsigned c = 0; c != 4; ++c)
@ -168,10 +168,33 @@ struct SparcFloatCCRegClass : public TargetRegClassInfo {
inline bool isRegVolatile(int Reg) const { return true; }
enum {
fcc0, fcc1, fcc2, fcc3
fcc0, fcc1, fcc2, fcc3, fsr // fsr is not used in allocation
}; // but has a name in getRegName()
const char * const getRegName(unsigned reg) const;
};
//-----------------------------------------------------------------------------
// Sparc special register class. These registers are not used for allocation
// but are used as arguments of some instructions.
//-----------------------------------------------------------------------------
struct SparcSpecialRegClass : public TargetRegClassInfo {
SparcSpecialRegClass(unsigned ID)
: TargetRegClassInfo(ID, 0, 1) { }
void colorIGNode(IGNode *Node, std::vector<bool> &IsColorUsedArr) const {
assert(0 && "SparcSpecialRegClass should never be used for allocation");
}
// all currently included special regs are volatile
inline bool isRegVolatile(int Reg) const { return true; }
enum {
fsr // floating point state register
};
static const char * const getRegName(unsigned reg);
const char * const getRegName(unsigned reg) const;
};
#endif

142
lib/Target/SparcV9/SparcV9RegInfo.cpp
View File

@ -32,6 +32,7 @@ UltraSparcRegInfo::UltraSparcRegInfo(const UltraSparc &tgt)
MachineRegClassArr.push_back(new SparcFloatRegClass(FloatRegClassID));
MachineRegClassArr.push_back(new SparcIntCCRegClass(IntCCRegClassID));
MachineRegClassArr.push_back(new SparcFloatCCRegClass(FloatCCRegClassID));
MachineRegClassArr.push_back(new SparcSpecialRegClass(SpecialRegClassID));
assert(SparcFloatRegClass::StartOfNonVolatileRegs == 32 &&
"32 Float regs are used for float arg passing");
@ -75,7 +76,7 @@ static const char * const IntRegNames[] = {
"o6"
};
const char * const SparcIntRegClass::getRegName(unsigned reg) {
const char * const SparcIntRegClass::getRegName(unsigned reg) const {
assert(reg < NumOfAllRegs);
return IntRegNames[reg];
}
@ -90,7 +91,7 @@ static const char * const FloatRegNames[] = {
"f60", "f61", "f62", "f63"
};
const char * const SparcFloatRegClass::getRegName(unsigned reg) {
const char * const SparcFloatRegClass::getRegName(unsigned reg) const {
assert (reg < NumOfAllRegs);
return FloatRegNames[reg];
}
@ -100,7 +101,7 @@ static const char * const IntCCRegNames[] = {
"xcc", "ccr"
};
const char * const SparcIntCCRegClass::getRegName(unsigned reg) {
const char * const SparcIntCCRegClass::getRegName(unsigned reg) const {
assert(reg < 2);
return IntCCRegNames[reg];
}
@ -109,28 +110,18 @@ static const char * const FloatCCRegNames[] = {
"fcc0", "fcc1", "fcc2", "fcc3"
};
const char * const SparcFloatCCRegClass::getRegName(unsigned reg) {
assert (reg < 4);
const char * const SparcFloatCCRegClass::getRegName(unsigned reg) const {
assert (reg < 5);
return FloatCCRegNames[reg];
}
// given the unified register number, this gives the name
// for generating assembly code or debugging.
//
const char * const UltraSparcRegInfo::getUnifiedRegName(int reg) const {
if( reg < 32 )
return SparcIntRegClass::getRegName(reg);
else if ( reg < (64 + 32) )
return SparcFloatRegClass::getRegName( reg - 32);
else if( reg < (64+32+4) )
return SparcFloatCCRegClass::getRegName( reg -32 - 64);
else if( reg < (64+32+4+2) ) // two names: %xcc and %ccr
return SparcIntCCRegClass::getRegName( reg -32 - 64 - 4);
else if (reg== InvalidRegNum) //****** TODO: Remove */
return "<*NoReg*>";
else
assert(0 && "Invalid register number");
return "";
static const char * const SpecialRegNames[] = {
"fsr"
};
const char * const SparcSpecialRegClass::getRegName(unsigned reg) const {
assert (reg < 1);
return SpecialRegNames[reg];
}
// Get unified reg number for frame pointer
@ -230,43 +221,34 @@ UltraSparcRegInfo::regNumForFPArg(unsigned regType,
// The following 4 methods are used to find the RegType (SparcInternals.h)
// of a LiveRange, a Value, and for a given register unified reg number.
//
int UltraSparcRegInfo::getRegType(const Type* type) const {
unsigned regClassID = getRegClassIDOfType(type);
int UltraSparcRegInfo::getRegTypeForClassAndType(unsigned regClassID,
const Type* type) const
{
switch (regClassID) {
case IntRegClassID: return IntRegType;
case FloatRegClassID: {
if (type == Type::FloatTy)
return FPSingleRegType;
else if (type == Type::DoubleTy)
return FPDoubleRegType;
assert(0 && "Unknown type in FloatRegClass");
}
case IntCCRegClassID: return IntCCRegType;
case FloatCCRegClassID: return FloatCCRegType;
case IntRegClassID: return IntRegType;
case FloatRegClassID:
if (type == Type::FloatTy) return FPSingleRegType;
else if (type == Type::DoubleTy) return FPDoubleRegType;
assert(0 && "Unknown type in FloatRegClass"); return 0;
case IntCCRegClassID: return IntCCRegType;
case FloatCCRegClassID: return FloatCCRegType;
case SpecialRegClassID: return SpecialRegType;
default: assert( 0 && "Unknown reg class ID"); return 0;
}
}
int UltraSparcRegInfo::getRegType(const LiveRange *LR) const {
const Type* type = LR->getType();
unsigned regClassID = LR->getRegClassID();
switch (regClassID) {
default: assert( 0 && "Unknown reg class ID");
case IntRegClassID: return IntRegType;
case FloatRegClassID:
if (type == Type::FloatTy)
return FPSingleRegType;
else if (type == Type::DoubleTy)
return FPDoubleRegType;
assert(0 && "Unknown type in FloatRegClass");
case IntCCRegClassID: return IntCCRegType;
case FloatCCRegClassID: return FloatCCRegType;
}
int UltraSparcRegInfo::getRegType(const Type* type) const
{
return getRegTypeForClassAndType(getRegClassIDOfType(type), type);
}
int UltraSparcRegInfo::getRegType(const LiveRange *LR) const
{
return getRegTypeForClassAndType(LR->getRegClassID(), LR->getType());
}
int UltraSparcRegInfo::getRegType(int unifiedRegNum) const {
int UltraSparcRegInfo::getRegType(int unifiedRegNum) const
{
if (unifiedRegNum < 32)
return IntRegType;
else if (unifiedRegNum < (32 + 32))
@ -308,14 +290,6 @@ unsigned UltraSparcRegInfo::getRegClassIDOfType(const Type *type,
return res;
}
// To find the register class to which a specified register belongs
//
unsigned UltraSparcRegInfo::getRegClassIDOfReg(int unifiedRegNum) const {
unsigned classId = 0;
(void) getClassRegNum(unifiedRegNum, classId);
return classId;
}
unsigned UltraSparcRegInfo::getRegClassIDOfRegType(int regType) const {
switch(regType) {
case IntRegType: return IntRegClassID;
@ -1183,13 +1157,14 @@ UltraSparcRegInfo::cpReg2MemMI(std::vector<MachineInstr*>& mvec,
cpReg2MemMI(mvec, scratchReg, DestPtrReg, Offset, IntRegType);
return;
case FloatCCRegType:
assert(0 && "Tell Vikram if this assertion fails: we may have to mask out the other bits here");
case FloatCCRegType: {
assert(target.getInstrInfo().constantFitsInImmedField(V9::STXFSR, Offset));
MI = BuildMI(V9::STXFSR, 3).addMReg(SrcReg).addMReg(DestPtrReg)
.addSImm(Offset);
unsigned fsrRegNum = getUnifiedRegNum(UltraSparcRegInfo::SpecialRegClassID,
SparcSpecialRegClass::fsr);
MI = BuildMI(V9::STXFSR, 3)
.addMReg(fsrRegNum).addMReg(DestPtrReg).addSImm(Offset);
break;
}
default:
assert(0 && "Unknown RegType in cpReg2MemMI");
}
@ -1239,14 +1214,14 @@ UltraSparcRegInfo::cpMem2RegMI(std::vector<MachineInstr*>& mvec,
MI = BuildMI(V9::WRCCR, 2).addMReg(scratchReg).addMReg(DestReg+1,MOTy::Def);
break;
case FloatCCRegType:
assert(0 && "Tell Vikram if this assertion fails: we may have to mask "
"out the other bits here");
case FloatCCRegType: {
assert(target.getInstrInfo().constantFitsInImmedField(V9::LDXFSR, Offset));
unsigned fsrRegNum = getUnifiedRegNum(UltraSparcRegInfo::SpecialRegClassID,
SparcSpecialRegClass::fsr);
MI = BuildMI(V9::LDXFSR, 3).addMReg(SrcPtrReg).addSImm(Offset)
.addMReg(DestReg, MOTy::Def);
.addMReg(fsrRegNum, MOTy::UseAndDef);
break;
}
default:
assert(0 && "Unknown RegType in cpMem2RegMI");
}
@ -1462,7 +1437,7 @@ UltraSparcRegInfo::insertCallerSavingCode
// Print the register assigned to a LR
//---------------------------------------------------------------------------
void UltraSparcRegInfo::printReg(const LiveRange *LR) {
void UltraSparcRegInfo::printReg(const LiveRange *LR) const {
unsigned RegClassID = LR->getRegClassID();
std::cerr << " *Node " << (LR->getUserIGNode())->getIndex();
@ -1475,15 +1450,13 @@ void UltraSparcRegInfo::printReg(const LiveRange *LR) {
std::cerr << " colored with color "<< LR->getColor();
if (RegClassID == IntRegClassID) {
std::cerr<< " [" << SparcIntRegClass::getRegName(LR->getColor()) << "]\n";
} else if (RegClassID == FloatRegClassID) {
std::cerr << "[" << SparcFloatRegClass::getRegName(LR->getColor());
if( LR->getType() == Type::DoubleTy)
std::cerr << "+" << SparcFloatRegClass::getRegName(LR->getColor()+1);
std::cerr << "]\n";
}
unsigned uRegName = getUnifiedRegNum(RegClassID, LR->getColor());
std::cerr << "[";
std::cerr<< getUnifiedRegName(uRegName);
if (RegClassID == FloatRegClassID && LR->getType() == Type::DoubleTy)
std::cerr << "+" << getUnifiedRegName(uRegName+1);
std::cerr << "]\n";
}
//---------------------------------------------------------------------------
@ -1559,7 +1532,7 @@ void UltraSparcRegInfo::OrderAddedInstrns(std::vector<MachineInstr*> &UnordVec,
// last operand is the def (unless for a store which has no def reg)
MachineOperand& DefOp = DefInst->getOperand(DefInst->getNumOperands()-1);
if (DefOp.opIsDef() &&
if ((DefOp.opIsDefOnly() || DefOp.opIsDefAndUse()) &&
DefOp.getType() == MachineOperand::MO_MachineRegister) {
// If the operand in DefInst is a def ...
@ -1576,7 +1549,7 @@ void UltraSparcRegInfo::OrderAddedInstrns(std::vector<MachineInstr*> &UnordVec,
// for each inst (UseInst) that is below the DefInst do ...
MachineOperand& UseOp = UseInst->getOperand(0);
if (!UseOp.opIsDef() &&
if (!UseOp.opIsDefOnly() &&
UseOp.getType() == MachineOperand::MO_MachineRegister) {
// if use is a register ...
@ -1637,7 +1610,7 @@ void UltraSparcRegInfo::moveInst2OrdVec(std::vector<MachineInstr*> &OrdVec,
PhyRegAlloc &PRA) const {
MachineOperand& UseOp = UnordInst->getOperand(0);
if (!UseOp.opIsDef() &&
if (!UseOp.opIsDefOnly() &&
UseOp.getType() == MachineOperand::MO_MachineRegister) {
// for the use of UnordInst, see whether there is a defining instr
@ -1653,7 +1626,7 @@ void UltraSparcRegInfo::moveInst2OrdVec(std::vector<MachineInstr*> &OrdVec,
MachineOperand& DefOp =
OrdInst->getOperand(OrdInst->getNumOperands()-1);
if( DefOp.opIsDef() &&
if( (DefOp.opIsDefOnly() || DefOp.opIsDefAndUse()) &&
DefOp.getType() == MachineOperand::MO_MachineRegister) {
//std::cerr << "\nDefining Ord Inst: " << *OrdInst;
@ -1686,7 +1659,8 @@ void UltraSparcRegInfo::moveInst2OrdVec(std::vector<MachineInstr*> &OrdVec,
// Load directly into DReg (%oy)
MachineOperand& DOp=
(UnordInst->getOperand(UnordInst->getNumOperands()-1));
assert(DOp.opIsDef() && "Last operand is not the def");
assert((DOp.opIsDefOnly() || DefOp.opIsDefAndUse()) &&
"Last operand is not the def");
const int DReg = DOp.getMachineRegNum();
cpMem2RegMI(OrdVec, getFramePointer(), StackOff, DReg, RegType);