diff options
Diffstat (limited to 'frontends/ast/simplify.cc')
| -rw-r--r-- | frontends/ast/simplify.cc | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/frontends/ast/simplify.cc b/frontends/ast/simplify.cc index e5e8980a..fc040baa 100644 --- a/frontends/ast/simplify.cc +++ b/frontends/ast/simplify.cc @@ -878,6 +878,31 @@ bool AstNode::simplify(bool const_fold, bool at_zero, bool in_lvalue, int stage, did_something = true; } + // unroll cell arrays + if (type == AST_CELLARRAY) + { + if (!children.at(0)->range_valid) + log_error("Non-constant array range on cell array at %s:%d.\n", filename.c_str(), linenum); + + newNode = new AstNode(AST_GENBLOCK); + int num = std::max(children.at(0)->range_left, children.at(0)->range_right) - std::min(children.at(0)->range_left, children.at(0)->range_right) + 1; + + for (int i = 0; i < num; i++) { + int idx = children.at(0)->range_left > children.at(0)->range_right ? children.at(0)->range_right + i : children.at(0)->range_right - i; + AstNode *new_cell = children.at(1)->clone(); + newNode->children.push_back(new_cell); + new_cell->str += stringf("[%d]", idx); + if (new_cell->type == AST_PRIMITIVE) { + log_error("Cell arrays of primitives are currently not supported at %s:%d.\n", filename.c_str(), linenum); + } else { + log_assert(new_cell->children.at(0)->type == AST_CELLTYPE); + new_cell->children.at(0)->str = stringf("$array:%d:%d:%s", i, num, new_cell->children.at(0)->str.c_str()); + } + } + + goto apply_newNode; + } + // replace primitives with assignmens if (type == AST_PRIMITIVE) { |