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Fixed the number translation scheme for the integer condition code registers: it

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now works in instructions which require a 2-bit or 3-bit INTcc code.

Incidentally, that means that the representation of INTcc registers is now the
same in both integer and FP instructions. Thus, code became much simpler and
cleaner.

llvm-svn: 7185
This commit is contained in:
Misha Brukman 2003-07-16 20:30:40 +00:00
parent 5a52ebed46
commit 8c9be85d5d
2 changed files with 8 additions and 32 deletions
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39
lib/Target/Sparc/SparcV9CodeEmitter.cpp
View File

@ -327,22 +327,6 @@ void SparcV9CodeEmitter::emitWord(unsigned Val) {
}
}
bool SparcV9CodeEmitter::isFPInstr(MachineInstr &MI) {
for (unsigned i = 0, e = MI.getNumOperands(); i < e; ++i) {
const MachineOperand &MO = MI.getOperand(i);
if (MO.isPhysicalRegister()) {
unsigned fakeReg = MO.getReg(), realReg, regClass, regType;
regType = TM.getRegInfo().getRegType(fakeReg);
// At least map fakeReg into its class
// fakeReg = TM.getRegInfo().getClassRegNum(fakeReg, regClass);
if (regType == UltraSparcRegInfo::FPSingleRegType ||
regType == UltraSparcRegInfo::FPDoubleRegType)
return true;
}
}
return false;
}
unsigned
SparcV9CodeEmitter::getRealRegNum(unsigned fakeReg,
MachineInstr &MI) {
@ -386,21 +370,13 @@ SparcV9CodeEmitter::getRealRegNum(unsigned fakeReg,
return fakeReg;
}
case UltraSparcRegInfo::IntCCRegClassID: {
/* xcc, icc, ccr */
static const unsigned FPInstrIntCCReg[] = { 6, 4, 2 };
static const unsigned IntInstrIntCCReg[] = { 2, 0, 2 };
/* xcc, icc, ccr */
static const unsigned IntCCReg[] = { 6, 4, 2 };
if (isFPInstr(MI)) {
assert(fakeReg < sizeof(FPInstrIntCCReg)/sizeof(FPInstrIntCCReg[0])
&& "FP CC register out of bounds for FPInstr IntCCReg map");
DEBUG(std::cerr << "FP instr, IntCC reg: " << FPInstrIntCCReg[fakeReg] << "\n");
return FPInstrIntCCReg[fakeReg];
} else {
assert(fakeReg < sizeof(IntInstrIntCCReg)/sizeof(IntInstrIntCCReg[0])
&& "Int CC register out of bounds for IntInstr IntCCReg map");
DEBUG(std::cerr << "FP instr, IntCC reg: " << IntInstrIntCCReg[fakeReg] << "\n");
return IntInstrIntCCReg[fakeReg];
}
assert(fakeReg < sizeof(IntCCReg)/sizeof(IntCCReg[0])
&& "CC register out of bounds for IntCCReg map");
DEBUG(std::cerr << "IntCC reg: " << IntCCReg[fakeReg] << "\n");
return IntCCReg[fakeReg];
}
case UltraSparcRegInfo::FloatCCRegClassID: {
/* These are laid out %fcc0 - %fcc3 => 0 - 3, so are correct */
@ -580,7 +556,8 @@ int64_t SparcV9CodeEmitter::getMachineOpValue(MachineInstr &MI,
unsigned fakeReg = MO.getAllocatedRegNum();
unsigned realRegByClass = getRealRegNum(fakeReg, MI);
DEBUG(std::cerr << MO << ": Reg[" << std::dec << fakeReg << "] => "
<< realRegByClass << "\n");
<< realRegByClass << " (LLC: "
<< TM.getRegInfo().getUnifiedRegName(fakeReg) << ")\n");
rv = realRegByClass;
} else if (MO.isImmediate()) {
rv = MO.getImmedValue();

1
lib/Target/Sparc/SparcV9CodeEmitter.h
View File

@ -47,7 +47,6 @@ private:
void emitBasicBlock(MachineBasicBlock &MBB);
void* getGlobalAddress(GlobalValue *V, MachineInstr &MI,
bool isPCRelative);
bool isFPInstr(MachineInstr &MI);
unsigned getRealRegNum(unsigned fakeReg, MachineInstr &MI);
inline void emitFarCall(uint64_t Addr);