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Internals: Refactor input/output to new class in prep for ref support.

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This commit is contained in:
Wilson Snyder
2018-10-27 17:29:00 -04:00
parent dc26815b1c
commit b8098098d8
34 changed files with 456 additions and 391 deletions
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src/V3LinkDot.cpp
+5 -4
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@@ -871,8 +871,9 @@ class LinkDotFindVisitor : public AstNVisitor {
// also return the class reference.
if (dtypep) dtypep->unlinkFrBack();
else dtypep = new AstBasicDType(nodep->fileline(), AstBasicDTypeKwd::LOGIC);
AstVar* newvarp = new AstVar(nodep->fileline(), AstVarType::OUTPUT, nodep->name(),
VFlagChildDType(), dtypep); // Not dtype resolved yet
AstVar* newvarp = new AstVar(nodep->fileline(), AstVarType::WIRE, nodep->name(),
VFlagChildDType(), dtypep); // Not dtype resolved yet
newvarp->direction(VDirection::OUTPUT);
newvarp->funcReturn(true);
newvarp->trace(false); // Not user visible
newvarp->attrIsolateAssign(nodep->attrIsolateAssign());
@@ -1537,10 +1538,10 @@ private:
} else if (VN_IS(symp->nodep(), ModportVarRef)) {
AstModportVarRef* snodep = VN_CAST(symp->nodep(), ModportVarRef);
AstVar* varp = snodep->varp();
if (lvalue && snodep->isInput()) {
if (lvalue && snodep->direction().isReadOnly()) {
nodep->v3error("Attempt to drive input-only modport: "<<nodep->prettyName());
} // else other simulators don't warn about reading, and IEEE doesn't say illegal
return varp;
return varp;
} else {
return NULL;
}