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Internals: Eliminate user5 for smaller AstNode/better runtime

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This commit is contained in:
Wilson Snyder
2008-11-25 07:57:02 -05:00
parent 314c9de845
commit 30ad20be52
6 changed files with 53 additions and 52 deletions
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src/V3Order.cpp
+10 -11
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@@ -241,8 +241,8 @@ private:
// Entire Netlist:
// AstVarScope::userp -> OrderUser* for usage var
// {statement}Node::userp-> AstModule* statement is under
// USER5 Cleared on each Logic stmt
// AstVarScope::user5() -> VarUsage(gen/con/both). Where already encountered signal
// USER4 Cleared on each Logic stmt
// AstVarScope::user4() -> VarUsage(gen/con/both). Where already encountered signal
// Ordering (user3/4/5 cleared between forming and ordering)
// AstScope::userp() -> AstModule*. Module this scope is under
// AstModule::user3() -> Number of routines created
@@ -250,7 +250,6 @@ private:
AstUser2InUse m_inuse2;
AstUser3InUse m_inuse3;
AstUser4InUse m_inuse4;
AstUser5InUse m_inuse5;
//int debug() { return 9; }
@@ -297,8 +296,8 @@ private:
void iterateNewStmt(AstNode* nodep) {
if (m_scopep) {
UINFO(4," STMT "<<nodep<<endl);
//VV***** We reset user5p()
AstNode::user5ClearTree();
//VV***** We reset user4p()
AstNode::user4ClearTree();
if (!m_activep || !m_activep->sensesp()) nodep->v3fatalSrc("NULL");
// If inside combo logic, ignore the domain, we'll assign one based on interconnect
AstSenTree* startDomainp = m_activep->sensesp();
@@ -461,7 +460,7 @@ private:
// Done topscope, erase extra user information
// userp passed to next process() operation
AstNode::user3ClearTree();
AstNode::user5ClearTree();
AstNode::user4ClearTree();
}
virtual void visit(AstModule* nodep, AstNUser*) {
m_modp = nodep;
@@ -516,10 +515,10 @@ private:
bool gen = false;
bool con = false;
if (nodep->lvalue()) {
gen = !(varscp->user5() & VU_GEN);
gen = !(varscp->user4() & VU_GEN);
} else {
con = !(varscp->user5() & VU_CON);
if ((varscp->user5() & VU_GEN) && !m_inClocked) {
con = !(varscp->user4() & VU_CON);
if ((varscp->user4() & VU_GEN) && !m_inClocked) {
// Dangerous assumption:
// If a variable is used in the same activation which defines it first,
// consider it something like:
@@ -536,8 +535,8 @@ private:
con = false;
}
}
if (gen) varscp->user5(varscp->user5() | VU_GEN);
if (con) varscp->user5(varscp->user5() | VU_CON);
if (gen) varscp->user4(varscp->user4() | VU_GEN);
if (con) varscp->user4(varscp->user4() | VU_CON);
// Add edges
if (!m_inClocked
|| m_inPost