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Internals: Move iterators to AstNVisitor to avoid null this.

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This commit is contained in:
Wilson Snyder
2018-05-10 20:55:37 -04:00
parent 489f58011b
commit 05db8ce6c8
71 changed files with 1145 additions and 1099 deletions
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src/V3LifePost.cpp
+13 -13
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@@ -75,30 +75,30 @@ private:
}
virtual void visit(AstNodeModule* nodep) {
// Only track the top scopes, not lower level functions
if (nodep->isTop()) nodep->iterateChildren(*this);
if (nodep->isTop()) iterateChildren(nodep);
}
virtual void visit(AstCCall* nodep) {
nodep->iterateChildren(*this);
iterateChildren(nodep);
if (!nodep->funcp()->entryPoint()) {
// Enter the function and trace it
m_tracingCall = true;
nodep->funcp()->accept(*this);
iterate(nodep->funcp());
}
}
virtual void visit(AstCFunc* nodep) {
if (!m_tracingCall && !nodep->entryPoint()) return;
m_tracingCall = false;
nodep->iterateChildren(*this);
iterateChildren(nodep);
}
virtual void visit(AstVar*) {} // Don't want varrefs under it
virtual void visit(AstNode* nodep) {
nodep->iterateChildren(*this);
iterateChildren(nodep);
}
public:
// CONSTRUCTORS
explicit LifePostElimVisitor(AstTopScope* nodep)
: m_tracingCall(false) {
nodep->accept(*this);
iterate(nodep);
}
virtual ~LifePostElimVisitor() {}
};
@@ -128,7 +128,7 @@ private:
AstNode::user2ClearTree(); // user2p() used on entire tree
AstNode::user4ClearTree(); // user4p() used on entire tree
m_sequence = 0;
nodep->iterateChildren(*this);
iterateChildren(nodep);
// Replace any node4p varscopes with the new scope
LifePostElimVisitor visitor (nodep);
@@ -190,32 +190,32 @@ private:
}
virtual void visit(AstNodeModule* nodep) {
// Only track the top scopes, not lower level functions
if (nodep->isTop()) nodep->iterateChildren(*this);
if (nodep->isTop()) iterateChildren(nodep);
}
virtual void visit(AstCCall* nodep) {
nodep->iterateChildren(*this);
iterateChildren(nodep);
if (!nodep->funcp()->entryPoint()) {
// Enter the function and trace it
m_tracingCall = true;
nodep->funcp()->accept(*this);
iterate(nodep->funcp());
}
}
virtual void visit(AstCFunc* nodep) {
if (!m_tracingCall && !nodep->entryPoint()) return;
m_tracingCall = false;
nodep->iterateChildren(*this);
iterateChildren(nodep);
}
//-----
virtual void visit(AstVar*) {} // Don't want varrefs under it
virtual void visit(AstNode* nodep) {
nodep->iterateChildren(*this);
iterateChildren(nodep);
}
public:
// CONSTRUCTORS
explicit LifePostDlyVisitor(AstNetlist* nodep)
: m_tracingCall(false) {
nodep->accept(*this);
iterate(nodep);
}
virtual ~LifePostDlyVisitor() {
V3Stats::addStat("Optimizations, Lifetime postassign deletions", m_statAssnDel);