diff options
Diffstat (limited to 'frontends/ast/genrtlil.cc')
| -rw-r--r-- | frontends/ast/genrtlil.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/frontends/ast/genrtlil.cc b/frontends/ast/genrtlil.cc index 9c027878a..50e959754 100644 --- a/frontends/ast/genrtlil.cc +++ b/frontends/ast/genrtlil.cc @@ -974,8 +974,12 @@ RTLIL::SigSpec AstNode::genRTLIL(int width_hint, bool sign_hint) width = width_hint; if (type == AST_MUL) width = std::min(left.width + right.width, width_hint); + if (type == AST_POW) + width = width_hint; } is_signed = children[0]->is_signed && children[1]->is_signed; + if (!flag_noopt && type == AST_POW && left.is_fully_const() && left.as_int() == 2) + return binop2rtlil(this, "$shl", width, RTLIL::SigSpec(1, left.width), right); return binop2rtlil(this, type_name, width, left, right); } |