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interchange: Track the macros that cells have been expanded from

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Signed-off-by: gatecat <gatecat@ds0.me>
This commit is contained in:
gatecat 2021-06-29 14:48:47 +01:00
parent 78c965141f
commit 2476f116bb
3 changed files with 8 additions and 0 deletions
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1
fpga_interchange/arch.h
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@ -1152,6 +1152,7 @@ struct Arch : ArchAPI<ArchRanges>
const DefaultCellConnsPOD *get_default_conns(IdString cell_type) const;
void pack_default_conns();
dict<IdString, std::vector<CellInfo *>> macro_to_cells;
void expand_macros();
};

1
fpga_interchange/archdefs.h
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@ -120,6 +120,7 @@ struct ArchCellInfo
dict<IdString, std::vector<IdString>> cell_bel_pins;
dict<IdString, std::vector<IdString>> masked_cell_bel_pins;
pool<IdString> const_ports;
IdString macro_parent = IdString();
LutCell lut_cell;
};

6
fpga_interchange/macros.cc
View File

@ -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