__pu_value *reg_var(Pu *L, const PuString &varname)
{
__pu_value *got = NULL;
VarMap *varmap = L->varstack.top();
VarMap::Bucket_T *it = varmap->find(varname);
if (it != 0)
{
got = &(it->value);
}
else
{
VarMap *varmap = L->varstack.bottom();
VarMap::Bucket_T *it = varmap->find(varname);
if (it != 0)
{
got = &(it->value);
}
}
if (got == NULL)
{
VarMap *varmap = L->varstack.top();
VarMap::Bucket_T *ret = varmap->insert(varname, __pu_value(L));
got = &(ret->value);
}
return got;
}
AstVarScope* createVarSc(AstVarScope* oldvarscp, string name, int width/*0==fromoldvar*/) {
// Because we've already scoped it, we may need to add both the AstVar and the AstVarScope
if (!oldvarscp->scopep()) oldvarscp->v3fatalSrc("Var unscoped");
AstVar* varp;
AstNodeModule* addmodp = oldvarscp->scopep()->modp();
// We need a new AstVar, but only one for all scopes, to match the new AstVarScope
VarMap::iterator iter = m_modVarMap.find(make_pair(addmodp,name));
if (iter != m_modVarMap.end()) {
// Created module's AstVar earlier under some other scope
varp = iter->second;
} else {
if (width==0) {
varp = new AstVar (oldvarscp->fileline(), AstVarType::BLOCKTEMP, name, oldvarscp->varp());
varp->widthSignedFrom(oldvarscp);
} else { // Used for vset and dimensions, so can zero init
varp = new AstVar (oldvarscp->fileline(), AstVarType::BLOCKTEMP, name, AstBitPacked(), width);
}
addmodp->addStmtp(varp);
m_modVarMap.insert(make_pair(make_pair(addmodp, name), varp));
}
AstVarScope* varscp = new AstVarScope (oldvarscp->fileline(), oldvarscp->scopep(), varp);
oldvarscp->scopep()->addVarp(varscp);
return varscp;
}
virtual void visit(AstVarRef* nodep, AstNUser*) {
if (nodep->lvalue() && !nodep->user2()) {
nodep->user2(true); // mark this ref as visited
AstVar* key = nodep->varp();
VarMap::iterator it = m_lhsmapp->find(key);
if (it == m_lhsmapp->end()) {
// this key does not exist yet, so create it
RefVec* refs = new RefVec();
refs->push_back(nodep);
m_lhsmapp->insert(pair<AstVar*, RefVec*>(key, refs));
} else {
(*it).second->push_back(nodep);
}
nodep->user3p(m_sel); // attach the sel to this varref
}
nodep->iterateChildren(*this);
}
