diff options
Diffstat (limited to 'frontends/ast/simplify.cc')
| -rw-r--r-- | frontends/ast/simplify.cc | 17 |
1 files changed, 10 insertions, 7 deletions
diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc index 6ae62ead8..737fb300c 100644 --- a/frontends/ast/simplify.cc +++ b/frontends/ast/simplify.cc @@ -934,12 +934,15 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, } } if (current_scope.count(str) == 0) { - // log_warning("Creating auto-wire `%s' in module `%s'.\n", str.c_str(), current_ast_mod->str.c_str()); - AstNode *auto_wire = new AstNode(AST_AUTOWIRE); - auto_wire->str = str; - current_ast_mod->children.push_back(auto_wire); - current_scope[str] = auto_wire; - did_something = true; + if (flag_autowire) { + AstNode *auto_wire = new AstNode(AST_AUTOWIRE); + auto_wire->str = str; + current_ast_mod->children.push_back(auto_wire); + current_scope[str] = auto_wire; + did_something = true; + } else { + log_file_error(filename, linenum, "Identifier `%s' is implicitly declared and `default_nettype is set to none.\n", str.c_str()); + } } if (id2ast != current_scope[str]) { id2ast = current_scope[str]; @@ -1689,7 +1692,7 @@ skip_dynamic_range_lvalue_expansion:; while (right_at_zero_ast->simplify(true, true, false, 1, -1, false, false)) { } if (left_at_zero_ast->type != AST_CONSTANT || right_at_zero_ast->type != AST_CONSTANT) log_file_error(filename, linenum, "Unsupported expression on dynamic range select on signal `%s'!\n", str.c_str()); - int width = left_at_zero_ast->integer - right_at_zero_ast->integer + 1; + int width = abs(int(left_at_zero_ast->integer - right_at_zero_ast->integer)) + 1; assign_data = new AstNode(AST_ASSIGN_LE, new AstNode(AST_IDENTIFIER), new AstNode(AST_SHIFT_LEFT, children[1]->clone(), offset_ast->clone())); |