diff options
Diffstat (limited to 'frontends/ast/genrtlil.cc')
| -rw-r--r-- | frontends/ast/genrtlil.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc index 6001e278a..99d8566dc 100644 --- a/frontends/ast/genrtlil.cc +++ b/frontends/ast/genrtlil.cc @@ -664,6 +664,14 @@ void AstNode::detectSignWidthWorker(int &width_hint, bool &sign_hint) sign_hint = false; break; + case AST_TO_BITS: + while (children[0]->simplify(true, false, false, 1, -1, false) == true) { } + if (children[0]->type != AST_CONSTANT) + log_error("Left operand of tobits expression is not constant at %s:%d!\n", filename.c_str(), linenum); + children[1]->detectSignWidthWorker(sub_width_hint, sign_hint); + width_hint = std::max(width_hint, children[0]->bitsAsConst().as_int()); + break; + case AST_TO_SIGNED: children.at(0)->detectSignWidthWorker(width_hint, sub_sign_hint); break; |