diff options
| -rw-r--r-- | frontends/ast/genrtlil.cc | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc index ce34f708..0fde9b3b 100644 --- a/frontends/ast/genrtlil.cc +++ b/frontends/ast/genrtlil.cc @@ -947,13 +947,12 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint) return sig; } - // just pass thru the signal. the parent will evaluated the is_signed property and inperpret the SigSpec accordingly + // just pass thru the signal. the parent will evaluate the is_signed property and inperpret the SigSpec accordingly case AST_TO_SIGNED: case AST_TO_UNSIGNED: { - int sub_width_hint; - bool sub_sign_hint; - children[0]->detectSignWidth(sub_width_hint, sub_sign_hint); - RTLIL::SigSpec sig = children[0]->genRTLIL(width_hint, sub_sign_hint); + RTLIL::SigSpec sig = children[0]->genRTLIL(); + if (sig.width < width_hint) + sig.extend(width_hint, sign_hint); is_signed = sign_hint; return sig; } |