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Const-fold parameter defs on-demand in AstNode::detectSignWidthWorker()

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Clifford Wolf 2015-03-01 11:20:22 +01:00
parent 5d4f513c3b
commit 422794c584
1 changed files with 4 additions and 2 deletions
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6
frontends/ast/genrtlil.cc
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@ -567,9 +567,11 @@ void AstNode::detectSignWidthWorker(int &width_hint, bool &sign_hint, bool *foun
if (id_ast->children.size() > 1 && id_ast->children[1]->range_valid) { if (id_ast->children.size() > 1 && id_ast->children[1]->range_valid) {
this_width = id_ast->children[1]->range_left - id_ast->children[1]->range_right + 1; this_width = id_ast->children[1]->range_left - id_ast->children[1]->range_right + 1;
} else } else
if (id_ast->children[0]->type == AST_CONSTANT) { if (id_ast->children[0]->type != AST_CONSTANT)
while (id_ast->simplify(true, false, false, 1, -1, false, true)) { }
if (id_ast->children[0]->type == AST_CONSTANT)
this_width = id_ast->children[0]->bits.size(); this_width = id_ast->children[0]->bits.size();
} else else
log_error("Failed to detect width for parameter %s at %s:%d!\n", str.c_str(), filename.c_str(), linenum); log_error("Failed to detect width for parameter %s at %s:%d!\n", str.c_str(), filename.c_str(), linenum);
if (children.size() != 0) if (children.size() != 0)
range = children[0]; range = children[0];