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Add completely untested support for mtcrf/mfcrf encoding 

llvm-svn: 21353
This commit is contained in:
Chris Lattner 2005-04-19 05:41:52 +00:00
parent baa9be572b
commit 53c40624f9
1 changed files with 7 additions and 0 deletions
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7
llvm/lib/Target/PowerPC/PPC32CodeEmitter.cpp
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@ -186,6 +186,13 @@ int PPC32CodeEmitter::getMachineOpValue(MachineInstr &MI, MachineOperand &MO) {
// or things that get fixed up later by the JIT.
if (MO.isRegister()) {
rv = enumRegToMachineReg(MO.getReg());
// Special encoding for MTCRF and MFCRF, which uses a bit mask for the
// register, not the register number directly.
if ((MI.getOpcode() == PPC::MTCRF || MI.getOpcode() == PPC::MFCRF) &&
(MO.getReg() >= PPC::CR0 && MO.getReg() <= PPC::CR7)) {
rv = 0x80 >> rv;
}
} else if (MO.isImmediate()) {
rv = MO.getImmedValue();
} else if (MO.isGlobalAddress() || MO.isExternalSymbol()) {