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Generate AstNode accessors via astgen

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Introduce the @astgen directives parsed by astgen, currently used for
the generation child node (operand) accessors. Please see the updated
internal documentation for details.
This commit is contained in:
Geza Lore
2022-09-21 13:56:03 +01:00
parent 0a8cfb8d2c
commit ce03293128
70 changed files with 1386 additions and 1530 deletions
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src/V3Param.cpp
+5 -7
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@@ -1132,7 +1132,7 @@ class ParamVisitor final : public VNVisitor {
// NOT recurse the body.
V3Const::constifyGenerateParamsEdit(nodep->condp()); // condp may change
if (const AstConst* const constp = VN_CAST(nodep->condp(), Const)) {
if (AstNode* const keepp = (constp->isZero() ? nodep->elsesp() : nodep->ifsp())) {
if (AstNode* const keepp = (constp->isZero() ? nodep->elsesp() : nodep->thensp())) {
keepp->unlinkFrBackWithNext();
nodep->replaceWith(keepp);
} else {
@@ -1150,9 +1150,7 @@ class ParamVisitor final : public VNVisitor {
//! expression, since this is currently restricted to simple comparisons. If we ever do
//! move to more generic constant expressions, such code will be needed here.
void visit(AstBegin* nodep) override {
if (nodep->genforp()) {
AstGenFor* const forp = VN_AS(nodep->genforp(), GenFor);
UASSERT_OBJ(forp, nodep, "Non-GENFOR under generate-for BEGIN");
if (AstGenFor* const forp = VN_AS(nodep->genforp(), GenFor)) {
// We should have a GENFOR under here. We will be replacing the begin,
// so process here rather than at the generate to avoid iteration problems
UINFO(9, " BEGIN " << nodep << endl);
@@ -1211,7 +1209,7 @@ class ParamVisitor final : public VNVisitor {
if (const AstConst* const ccondp = VN_CAST(ep, Const)) {
V3Number match(nodep, 1);
match.opEq(ccondp->num(), exprp->num());
if (!keepp && match.isNeqZero()) keepp = itemp->bodysp();
if (!keepp && match.isNeqZero()) keepp = itemp->stmtsp();
} else {
itemp->v3error("Generate Case item does not evaluate to constant");
}
@@ -1222,7 +1220,7 @@ class ParamVisitor final : public VNVisitor {
for (AstCaseItem* itemp = nodep->itemsp(); itemp;
itemp = VN_AS(itemp->nextp(), CaseItem)) {
if (itemp->isDefault()) {
if (!keepp) keepp = itemp->bodysp();
if (!keepp) keepp = itemp->stmtsp();
}
}
// Replace
@@ -1269,7 +1267,7 @@ public:
});
// Re-insert modules
for (AstNodeModule* const modp : modps) netlistp->addModulep(modp);
for (AstNodeModule* const modp : modps) netlistp->addModulesp(modp);
}
}
~ParamVisitor() override = default;