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ast: Fix handling of identifiers in the global scope

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Signed-off-by: David Shah <dave@ds0.me>
This commit is contained in:
David Shah 2020-04-16 10:27:59 +01:00
parent 3c4758c60e
commit 4d02505820
3 changed files with 25 additions and 2 deletions
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7
frontends/ast/simplify.cc
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@ -1169,7 +1169,8 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
// annotate identifiers using scope resolution and create auto-wires as needed
if (type == AST_IDENTIFIER) {
if (current_scope.count(str) == 0) {
for (auto node : current_ast_mod->children) {
AstNode *current_scope_ast = (current_ast_mod == nullptr) ? current_ast : current_ast_mod;
for (auto node : current_scope_ast->children) {
//log("looking at mod scope child %s\n", type2str(node->type).c_str());
switch (node->type) {
case AST_PARAMETER:
@ -1203,7 +1204,9 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage,
}
}
if (current_scope.count(str) == 0) {
if (flag_autowire || str == "\\$global_clock") {
if (current_ast_mod == nullptr) {
log_file_error(filename, location.first_line, "Identifier `%s' is implicitly declared outside of a module.\n", str.c_str());
} else if (flag_autowire || str == "\\$global_clock") {
AstNode *auto_wire = new AstNode(AST_AUTOWIRE);
auto_wire->str = str;
current_ast_mod->children.push_back(auto_wire);