void CodeGenSubRegIndex::updateComponents(CodeGenRegBank &RegBank) {
std::vector<Record*> Comps = TheDef->getValueAsListOfDefs("ComposedOf");
if (Comps.empty())
return;
if (Comps.size() != 2)
throw TGError(TheDef->getLoc(), "ComposedOf must have exactly two entries");
CodeGenSubRegIndex *A = RegBank.getSubRegIdx(Comps[0]);
CodeGenSubRegIndex *B = RegBank.getSubRegIdx(Comps[1]);
CodeGenSubRegIndex *X = A->addComposite(B, this);
if (X)
throw TGError(TheDef->getLoc(), "Ambiguous ComposedOf entries");
}
void
CodeGenRegister::addSubRegsPreOrder(SetVector<const CodeGenRegister*> &OSet,
CodeGenRegBank &RegBank) const {
assert(SubRegsComplete && "Must precompute sub-registers");
std::vector<Record*> Indices = TheDef->getValueAsListOfDefs("SubRegIndices");
for (unsigned i = 0, e = Indices.size(); i != e; ++i) {
CodeGenSubRegIndex *Idx = RegBank.getSubRegIdx(Indices[i]);
CodeGenRegister *SR = SubRegs.find(Idx)->second;
if (OSet.insert(SR))
SR->addSubRegsPreOrder(OSet, RegBank);
}
}
