diff options
Diffstat (limited to 'frontends/ast')
| -rw-r--r-- | frontends/ast/simplify.cc | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc index d9eae3a06..b9965ba99 100644 --- a/frontends/ast/simplify.cc +++ b/frontends/ast/simplify.cc @@ -2223,6 +2223,21 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, children.push_back(node); did_something = true; } + else if (str == "buf" || str == "not") + { + AstNode *input = children_list.back(); + if (str == "not") + input = new AstNode(AST_BIT_NOT, input); + + newNode = new AstNode(AST_GENBLOCK); + for (auto it = children_list.begin(); it != std::prev(children_list.end()); it++) { + newNode->children.push_back(new AstNode(AST_ASSIGN, *it, input->clone())); + newNode->children.back()->was_checked = true; + } + delete input; + + did_something = true; + } else { AstNodeType op_type = AST_NONE; @@ -2240,10 +2255,6 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, op_type = AST_BIT_XOR; if (str == "xnor") op_type = AST_BIT_XOR, invert_results = true; - if (str == "buf") - op_type = AST_POS; - if (str == "not") - op_type = AST_POS, invert_results = true; log_assert(op_type != AST_NONE); AstNode *node = children_list[1]; |