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);
}
-#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,
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;
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;
}
IntRegClassID, // Integer
FloatRegClassID, // Float (both single/double)
IntCCRegClassID, // Int Condition Code
- FloatCCRegClassID // Float Condition code
+ FloatCCRegClassID, // Float Condition code
+ SpecialRegClassID // Special (unallocated) registers
};
FPSingleRegType,
FPDoubleRegType,
IntCCRegType,
- FloatCCRegType
+ FloatCCRegType,
+ SpecialRegType
};
// **** WARNING: If the above enum order is changed, also modify
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;
// 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
// 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;
- }
-
- // 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;
- }
+ void printReg(const LiveRange *LR) const;
- // 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
StartOfAllRegs = o0,
};
- static const char * const getRegName(unsigned reg);
+ const char * const getRegName(unsigned reg) const;
};
StartOfAllRegs = f0,
};
- static const char * const getRegName(unsigned reg);
+ const char * const getRegName(unsigned reg) const;
};
xcc, ccr // only one is available - see the note above
};
- static const char * const getRegName(unsigned reg);
+ const char * const getRegName(unsigned reg) const;
};
//-----------------------------------------------------------------------------
// 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)
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
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");
"o6"
};
-const char * const SparcIntRegClass::getRegName(unsigned reg) {
+const char * const SparcIntRegClass::getRegName(unsigned reg) const {
assert(reg < NumOfAllRegs);
return IntRegNames[reg];
}
"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];
}
"xcc", "ccr"
};
-const char * const SparcIntCCRegClass::getRegName(unsigned reg) {
+const char * const SparcIntCCRegClass::getRegName(unsigned reg) const {
assert(reg < 2);
return IntCCRegNames[reg];
}
"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
// 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))
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;
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");
}
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");
}
// 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();
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";
}
//---------------------------------------------------------------------------
// 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 ...
// 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 ...
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
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;
// 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);
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