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-rw-r--r--fpga_interchange/macros.cc6
1 files changed, 6 insertions, 0 deletions
diff --git a/fpga_interchange/macros.cc b/fpga_interchange/macros.cc
index 8339829f..42c8e1ba 100644
--- a/fpga_interchange/macros.cc
+++ b/fpga_interchange/macros.cc
@@ -66,6 +66,8 @@ void Arch::expand_macros()
const MacroPOD *macro = lookup_macro(chip_info, exp ? IdString(exp->macro_name) : cell->type);
if (macro == nullptr)
continue;
+ // Get the ultimate root of this macro expansion
+ IdString parent = (cell->macro_parent == IdString()) ? cell->name : cell->macro_parent;
// Create child instances
for (const auto &inst : macro->cell_insts) {
CellInfo *inst_cell =
@@ -73,6 +75,7 @@ void Arch::expand_macros()
for (const auto &param : inst.parameters) {
inst_cell->params[IdString(param.key)] = IdString(param.value).str(ctx);
}
+ inst_cell->macro_parent = parent;
next_cells.push_back(inst_cell);
}
// Create and connect nets
@@ -156,6 +159,9 @@ void Arch::expand_macros()
std::swap(next_cells, cells);
next_cells.clear();
} while (!cells.empty());
+ // Do this at the end, otherwise we might add cells that are later destroyed
+ for (auto &cell : ctx->cells)
+ macro_to_cells[cell.second->macro_parent].push_back(cell.second.get());
}
NEXTPNR_NAMESPACE_END