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* Claim to support machine code emission - return false from

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addPassesToEmitMachineCode()
* Add support for registers and constants in getMachineOpValue()

This enables running "int main() { ret 0 }" via the PowerPC JIT.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16983 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman 2004-10-14 06:39:56 +00:00
parent ce6662fb6a
commit c982cfad87
1 changed files with 26 additions and 4 deletions
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30
lib/Target/PowerPC/PPCCodeEmitter.cpp
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@ -68,8 +68,7 @@ bool PPC32TargetMachine::addPassesToEmitMachineCode(FunctionPassManager &PM,
PM.add(new PPC32CodeEmitter(*this, MCE));
// Delete machine code for this function after emitting it
PM.add(createMachineCodeDeleter());
// We don't yet support machine code emission
return true;
return false;
}
bool PPC32CodeEmitter::runOnMachineFunction(MachineFunction &MF) {
@ -88,8 +87,31 @@ void PPC32CodeEmitter::emitBasicBlock(MachineBasicBlock &MBB) {
int64_t PPC32CodeEmitter::getMachineOpValue(MachineInstr &MI,
MachineOperand &MO) {
abort();
return 0;
int64_t rv = 0; // Return value; defaults to 0 for unhandled cases
// or things that get fixed up later by the JIT.
if (MO.isPCRelativeDisp()) {
std::cerr << "PPC32CodeEmitter: PC-relative disp unhandled\n";
abort();
} else if (MO.isRegister()) {
rv = MO.getReg();
} else if (MO.isImmediate()) {
rv = MO.getImmedValue();
#if 0
} else if (MO.isGlobalAddress()) {
} else if (MO.isMachineBasicBlock()) {
MachineBasicBlock *MBB = MO.getMachineBasicBlock();
} else if (MO.isExternalSymbol()) {
} else if (MO.isFrameIndex()) {
unsigned index = MO.getFrameIndex();
} else if (MO.isConstantPoolIndex()) {
unsigned index = MO.getCosntantPoolIndex();
#endif
} else {
std::cerr << "ERROR: Unknown type of MachineOperand: " << MO << "\n";
abort();
}
return rv;
}