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Support IEEE time units and time precisions, #234. (#2253)

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Includes `timescale, $printtimescale, $timeformat.
VL_TIME_MULTIPLIER, VL_TIME_PRECISION, VL_TIME_UNIT have been removed
and the time precision must now match the SystemC time precision.
To get closer behavior to older versions, use e.g. --timescale-override
"1ps/1ps".
This commit is contained in:
Wilson Snyder
2020-04-15 19:39:03 -04:00
committed by GitHub
parent 9b8aebb00c
commit d4f7f5297a
131 changed files with 2611 additions and 1290 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/V3EmitCSyms.cpp
+21 -12
View File
@@ -42,10 +42,13 @@ class EmitCSyms : EmitCBaseVisitor {
struct ScopeData {
string m_symName;
string m_prettyName;
int m_timeunit;
string m_type;
ScopeData(const string& symName, const string& prettyName, const string& type)
ScopeData(const string& symName, const string& prettyName, int timeunit,
const string& type)
: m_symName(symName)
, m_prettyName(prettyName)
, m_timeunit(timeunit)
, m_type(type) {}
};
struct ScopeFuncData {
@@ -220,7 +223,7 @@ class EmitCSyms : EmitCBaseVisitor {
if (v3Global.opt.vpi()) varHierarchyScopes(scpName);
if (m_scopeNames.find(scpSym) == m_scopeNames.end()) {
m_scopeNames.insert(
make_pair(scpSym, ScopeData(scpSym, scpPretty, "SCOPE_OTHER")));
make_pair(scpSym, ScopeData(scpSym, scpPretty, 0, "SCOPE_OTHER")));
}
m_scopeVars.insert(
make_pair(scpSym + " " + varp->name(),
@@ -289,8 +292,9 @@ class EmitCSyms : EmitCBaseVisitor {
string type = (nodep->origModName() == "__BEGIN__") ? "SCOPE_OTHER" : "SCOPE_MODULE";
string name = nodep->scopep()->name() + "__DOT__" + nodep->name();
string name_dedot = AstNode::dedotName(name);
int timeunit = m_modp->timeunit().negativeInt();
m_vpiScopeCandidates.insert(
make_pair(name, ScopeData(scopeSymString(name), name_dedot, type)));
make_pair(name, ScopeData(scopeSymString(name), name_dedot, timeunit, type)));
}
}
virtual void visit(AstScope* nodep) VL_OVERRIDE {
@@ -301,18 +305,20 @@ class EmitCSyms : EmitCBaseVisitor {
if (v3Global.opt.vpi() && !nodep->isTop()) {
string name_dedot = AstNode::dedotName(nodep->shortName());
int timeunit = m_modp->timeunit().negativeInt();
m_vpiScopeCandidates.insert(
make_pair(nodep->name(),
ScopeData(scopeSymString(nodep->name()), name_dedot, "SCOPE_MODULE")));
make_pair(nodep->name(), ScopeData(scopeSymString(nodep->name()), name_dedot,
timeunit, "SCOPE_MODULE")));
}
}
virtual void visit(AstScopeName* nodep) VL_OVERRIDE {
string name = nodep->scopeSymName();
// UINFO(9,"scnameins sp "<<nodep->name()<<" sp "<<nodep->scopePrettySymName()<<" ss
// "<<name<<endl);
// UINFO(9,"scnameins sp "<<nodep->name()<<" sp "<<nodep->scopePrettySymName()
// <<" ss"<<name<<endl);
int timeunit = m_modp ? m_modp->timeunit().negativeInt() : 0;
if (m_scopeNames.find(name) == m_scopeNames.end()) {
m_scopeNames.insert(
make_pair(name, ScopeData(name, nodep->scopePrettySymName(), "SCOPE_OTHER")));
m_scopeNames.insert(make_pair(
name, ScopeData(name, nodep->scopePrettySymName(), timeunit, "SCOPE_OTHER")));
}
if (nodep->dpiExport()) {
UASSERT_OBJ(m_funcp, nodep, "ScopeName not under DPI function");
@@ -320,9 +326,10 @@ class EmitCSyms : EmitCBaseVisitor {
make_pair(name + " " + m_funcp->name(), ScopeFuncData(nodep, m_funcp, m_modp)));
} else {
if (m_scopeNames.find(nodep->scopeDpiName()) == m_scopeNames.end()) {
m_scopeNames.insert(make_pair(
nodep->scopeDpiName(),
ScopeData(nodep->scopeDpiName(), nodep->scopePrettyDpiName(), "SCOPE_OTHER")));
m_scopeNames.insert(
make_pair(nodep->scopeDpiName(),
ScopeData(nodep->scopeDpiName(), nodep->scopePrettyDpiName(),
timeunit, "SCOPE_OTHER")));
}
}
}
@@ -683,6 +690,8 @@ void EmitCSyms::emitSymImp() {
putsQuoted(protectWordsIf(it->second.m_prettyName, true));
puts(", ");
putsQuoted(protect(scopeDecodeIdentifier(it->second.m_prettyName)));
puts(", ");
puts(cvtToStr(it->second.m_timeunit));
puts(", VerilatedScope::" + it->second.m_type + ");\n");
++m_numStmts;
}