本文整理汇总了C++中AstVarRef::lvalue方法的典型用法代码示例。如果您正苦于以下问题：C++ AstVarRef::lvalue方法的具体用法？C++ AstVarRef::lvalue怎么用？C++ AstVarRef::lvalue使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类AstVarRef的用法示例。
在下文中一共展示了AstVarRef::lvalue方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: visit
virtual void visit(AstSel* nodep, AstNUser*) {
AstVarRef* varrefp = nodep->fromp()->castVarRef();
AstConst* constp = nodep->lsbp()->castConst();
if (varrefp && constp && !constp->num().isFourState()) {
UndrivenVarEntry* entryp = getEntryp (varrefp->varp());
int lsb = constp->toUInt();
if (m_markBoth || varrefp->lvalue()) entryp->drivenBit(lsb, nodep->width());
if (m_markBoth || !varrefp->lvalue()) entryp->usedBit(lsb, nodep->width());
} else {
// else other varrefs handled as unknown mess in AstVarRef
nodep->iterateChildren(*this);
}
}示例2: visit
virtual void visit(AstArraySel* nodep, AstNUser*) {
if (!m_assignp) return;
if (nodep->user3()) return; // Prevent recursion on just created nodes
unsigned dim = explicitDimensions(nodep);
AstVarRef* refp = nodep->user1p()->castNode()->castVarRef();
pair<uint32_t,uint32_t> arrDim = refp->varp()->dtypep()->dimensions(false);
uint32_t implicit = (arrDim.second) - dim;
if (implicit > 0) {
AstArraySel* newp = insertImplicit(nodep->cloneTree(false), dim+1, implicit);
nodep->replaceWith(newp); nodep = newp;
nodep->user3(true);
}
int clones = countClones(nodep);
if (m_assignp->user2() > 0 && m_assignp->user2() != clones) {
m_assignp->v3error("Slices of arrays in assignments must have the same unpacked dimensions");
} else if (!m_assignp->user2()) {
if (m_extend && clones > 1 && !m_assignError) {
m_assignp->v3error("Unsupported: Assignment between unpacked arrays of different dimensions");
m_assignError = true;
}
if (clones > 1 && !refp->lvalue() && refp->varp() == m_lhsVarRefp->varp()
&& !m_assignp->castAssignDly() && !m_assignError) {
// LHS Var != RHS Var for a non-delayed assignment
m_assignp->v3error("Unsupported: Slices in a non-delayed assignment with the same Var on both sides");
m_assignError = true;
}
m_assignp->user2(clones);
}
}示例3: visit
virtual void visit(AstPin* nodep, AstNUser*) {
// Check to see if any output pins have __en pins and create the __en pins to match
AstVarRef* refp = findVarRef(nodep);
if (refp && refp->lvalue() && nodep->modVarp()->user1p()) {
AstVar* enchildp = (AstVar*)nodep->modVarp()->user1p();
UINFO(9, " Pulling __en var" << enchildp << endl);
AstVar* enp = new AstVar(enchildp->fileline(),
AstVarType::OUTPUT,
enchildp->name()+cvtToStr(m_unique++),
enchildp);
enp->user2(enchildp->user2());
m_modp->addStmtp(enp);
AstPin* pinp = new AstPin(nodep->fileline(),
nodep->pinNum(),
enp->name(),
new AstVarRef(nodep->fileline(), enp, true));
AstVarRef *rp = findVarRef(pinp);
rp->replaceWith(new AstVarRef(nodep->fileline(), enp, true));
rp->deleteTree(); rp=NULL;
pinp->width(enp->width(),enp->width()); // minwidth==width
pinp->modVarp(enchildp);
m_cellp->addPinsp(pinp);
refp->user1p(enp);
refp->varp()->user1p(enp);
}
// Simplify interconnect in preperation for V3Inst
// (This could be a separate visitor, but we're in the neighborhood)
V3Inst::pinReconnectSimple(nodep, m_cellp, m_modp);
}示例4: visit
virtual void visit(AstSel* nodep, AstNUser*) {
AstVarRef* varrefp = nodep->fromp()->castVarRef();
AstConst* constp = nodep->lsbp()->castConst();
if (varrefp && constp && !constp->num().isFourState()) {
for (int usr=1; usr<(m_alwaysp?3:2); ++usr) {
UndrivenVarEntry* entryp = getEntryp (varrefp->varp(), usr);
int lsb = constp->toUInt();
if (m_markBoth || varrefp->lvalue()) {
// Don't warn if already driven earlier as "a=0; if(a) a=1;" is fine.
if (usr==2 && m_alwaysp && entryp->isUsedNotDrivenBit(lsb, nodep->width())) {
UINFO(9," Select. Entryp="<<(void*)entryp<<endl);
warnAlwCombOrder(varrefp);
}
entryp->drivenBit(lsb, nodep->width());
}
if (m_markBoth || !varrefp->lvalue()) entryp->usedBit(lsb, nodep->width());
}
} else {
// else other varrefs handled as unknown mess in AstVarRef
nodep->iterateChildren(*this);
}
}