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Internals: V3Dead cleanups. No functional change.

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This commit is contained in:
Wilson Snyder 2023-05-27 11:46:25 -04:00
parent 5573bdb219
commit 70b82f1aec
1 changed files with 18 additions and 19 deletions
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37
src/V3Dead.cpp
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@ -62,9 +62,10 @@ private:
// TYPES
using AssignMap = std::multimap<AstVarScope*, AstNodeAssign*>;
// STATE
AstNodeModule* m_modp = nullptr; // Current module
AstSelLoopVars* m_selloopvarsp = nullptr; // Current loop vars
// STATE - across all visitors
const bool m_elimUserVars; // Allow removal of user's vars
const bool m_elimDTypes; // Allow removal of DTypes
const bool m_elimCells; // Allow removal of Cells
// List of all encountered to avoid another loop through tree
std::vector<AstVar*> m_varsp;
std::vector<AstNode*> m_dtypesp;
@ -73,13 +74,13 @@ private:
std::vector<AstCell*> m_cellsp;
std::vector<AstClass*> m_classesp;
std::vector<AstTypedef*> m_typedefsp;
AssignMap m_assignMap; // List of all simple assignments for each variable
const bool m_elimUserVars; // Allow removal of user's vars
const bool m_elimDTypes; // Allow removal of DTypes
const bool m_elimCells; // Allow removal of Cells
bool m_sideEffect = false; // Side effects discovered in assign RHS
// STATE - for current visit position (use VL_RESTORER)
AstNodeModule* m_modp = nullptr; // Current module
AstSelLoopVars* m_selloopvarsp = nullptr; // Current loop vars
// METHODS
void checkAll(AstNode* nodep) {
@ -107,18 +108,16 @@ private:
void visit(AstNodeModule* nodep) override {
if (m_modp) m_modp->user1Inc(); // e.g. Class under Package
VL_RESTORER(m_modp);
{
m_modp = nodep;
if (!nodep->dead()) {
iterateChildren(nodep);
checkAll(nodep);
if (AstClass* const classp = VN_CAST(nodep, Class)) {
if (classp->extendsp()) classp->extendsp()->user1Inc();
if (classp->classOrPackagep()) classp->classOrPackagep()->user1Inc();
m_classesp.push_back(classp);
// TODO we don't reclaim dead classes yet - graph implementation instead?
classp->user1Inc();
}
m_modp = nodep;
if (!nodep->dead()) {
iterateChildren(nodep);
checkAll(nodep);
if (AstClass* const classp = VN_CAST(nodep, Class)) {
if (classp->extendsp()) classp->extendsp()->user1Inc();
if (classp->classOrPackagep()) classp->classOrPackagep()->user1Inc();
m_classesp.push_back(classp);
// TODO we don't reclaim dead classes yet - graph implementation instead?
classp->user1Inc();
}
}
}