CodeNodePtr findMultiplyReferenced(
CodeNodePtr node,
const ReferenceMap& refs
) {
assert(node);
ReferenceMap::const_iterator it = refs.find(node);
if (REN_DYNAMIC_CAST_PTR(p, CallCodeNode, node)) {
if (it != refs.end() && it->second.size() > 1) {
return p;
}
} else if (REN_DYNAMIC_CAST_PTR(p, IfCodeNode, node)) {
if (it != refs.end() && it->second.size() > 1) {
return p;
}
} else if (REN_DYNAMIC_CAST_PTR(p, NameCodeNode, node)) {
// Do nothing.
} else {
assert(!"Unknown code node type");
}
CodeNodeList args = node->getChildren();
for (size_t i = 0; i < args.size(); ++i) {
CodeNodePtr c = findMultiplyReferenced(args[i], refs);
if (c) {
return c;
}
}
return CodeNodePtr();
}
void HexagonExpandCondsets::addRefToMap(RegisterRef RR, ReferenceMap &Map,
unsigned Exec) {
unsigned Mask = getMaskForSub(RR.Sub) | Exec;
ReferenceMap::iterator F = Map.find(RR.Reg);
if (F == Map.end())
Map.insert(std::make_pair(RR.Reg, Mask));
else
F->second |= Mask;
}
bool HexagonExpandCondsets::isRefInMap(RegisterRef RR, ReferenceMap &Map,
unsigned Exec) {
ReferenceMap::iterator F = Map.find(RR.Reg);
if (F == Map.end())
return false;
unsigned Mask = getMaskForSub(RR.Sub) | Exec;
if (Mask & F->second)
return true;
return false;
}