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Split V3LinkResolve into V3LinkLValue, and remove lvalue determination from bison code

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git-svn-id: file://localhost/svn/verilator/trunk/verilator@858 77ca24e4-aefa-0310-84f0-b9a241c72d87
This commit is contained in:
Wilson Snyder
2006-12-21 14:35:19 +00:00
parent 26bab12257
commit dc6a164e01
7 changed files with 252 additions and 96 deletions
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src/V3LinkResolve.cpp
+1 -47
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@@ -54,7 +54,6 @@ private:
// Below state needs to be preserved between each module call.
AstModule* m_modp; // Current module
AstNodeFTask* m_ftaskp; // Function or task we're inside
bool m_setRefLvalue; // Set VarRefs to lvalues for pin assignments
//int debug() { return 9; }
@@ -86,12 +85,6 @@ private:
// VarRef: Resolve its reference
if (nodep->varp()) {
nodep->varp()->usedParam(true);
if (nodep->lvalue() && nodep->varp()->isInOnly()) {
nodep->v3error("Assigning to input variable: "<<nodep->prettyName());
}
}
if (m_setRefLvalue) {
nodep->lvalue(true);
}
nodep->iterateChildren(*this);
}
@@ -104,46 +97,8 @@ private:
m_ftaskp = NULL;
}
virtual void visit(AstPin* nodep, AstNUser*) {
if (nodep->modVarp() && nodep->modVarp()->isOutput()) {
// When the varref's were created, we didn't know the I/O state
// Now that we do, and it's from a output, we know it's a lvalue
m_setRefLvalue = true;
nodep->iterateChildren(*this);
m_setRefLvalue = false;
} else {
nodep->iterateChildren(*this);
}
}
virtual void visit(AstSel* nodep, AstNUser*) {
nodep->lhsp()->iterateAndNext(*this);
{ // Only set lvalues on the from
bool last_setRefLvalue = m_setRefLvalue;
m_setRefLvalue = false;
nodep->rhsp()->iterateAndNext(*this);
nodep->thsp()->iterateAndNext(*this);
m_setRefLvalue = last_setRefLvalue;
}
}
virtual void visit(AstArraySel* nodep, AstNUser*) {
nodep->lhsp()->iterateAndNext(*this);
{ // Only set lvalues on the from
bool last_setRefLvalue = m_setRefLvalue;
m_setRefLvalue = false;
nodep->rhsp()->iterateAndNext(*this);
m_setRefLvalue = last_setRefLvalue;
}
}
void iterateSelTriop(AstNodePreSel* nodep) {
nodep->lhsp()->iterateAndNext(*this);
{ // Only set lvalues on the from
bool last_setRefLvalue = m_setRefLvalue;
m_setRefLvalue = false;
nodep->rhsp()->iterateAndNext(*this);
nodep->thsp()->iterateAndNext(*this);
m_setRefLvalue = last_setRefLvalue;
}
nodep->iterateChildren(*this);
}
AstNode* newSubAttrOf(AstNode* underp, AstNode* fromp, AstAttrType attrType) {
@@ -362,7 +317,6 @@ public:
LinkResolveVisitor(AstNetlist* rootp) {
m_ftaskp = NULL;
m_modp = NULL;
m_setRefLvalue = false;
//
rootp->accept(*this);
}