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-rw-r--r--frontends/ast/ast.cc2
-rw-r--r--frontends/ast/genrtlil.cc5
2 files changed, 4 insertions, 3 deletions
diff --git a/frontends/ast/ast.cc b/frontends/ast/ast.cc
index 9ddd538b5..733556621 100644
--- a/frontends/ast/ast.cc
+++ b/frontends/ast/ast.cc
@@ -1074,8 +1074,6 @@ static AstModule* process_module(AstNode *ast, bool defer, AstNode *original_ast
if (child->type == AST_WIRE && (child->is_input || child->is_output)) {
new_children.push_back(child);
} else if (child->type == AST_PARAMETER) {
- child->delete_children();
- child->children.push_back(AstNode::mkconst_int(0, false, 0));
new_children.push_back(child);
} else if (child->type == AST_CELL && child->children.size() > 0 && child->children[0]->type == AST_CELLTYPE &&
(child->children[0]->str == "$specify2" || child->children[0]->str == "$specify3" || child->children[0]->str == "$specrule")) {
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc
index ff3f5b84c..d35335747 100644
--- a/frontends/ast/genrtlil.cc
+++ b/frontends/ast/genrtlil.cc
@@ -1015,7 +1015,10 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint)
// remember the parameter, needed for example in techmap
case AST_PARAMETER:
- current_module->avail_parameters.insert(str);
+ current_module->avail_parameters(str);
+ if (GetSize(children) >= 1 && children[0]->type == AST_CONSTANT) {
+ current_module->parameter_default_values[str] = children[0]->asParaConst();
+ }
/* fall through */
case AST_LOCALPARAM:
if (flag_pwires)