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Added help messages for fsm_* passes

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This commit is contained in:
Clifford Wolf 2013-03-01 12:35:12 +01:00
parent f3a849512f
commit a338d1a082
10 changed files with 194 additions and 42 deletions
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25
passes/fsm/fsm_expand.cc
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@ -188,7 +188,7 @@ struct FsmExpand
fsm_data.copy_to_cell(fsm_cell);
}
FsmExpand(RTLIL::Cell *cell, RTLIL::Module *mod)
FsmExpand(RTLIL::Cell *cell, RTLIL::Design *design, RTLIL::Module *mod)
{
module = mod;
fsm_cell = cell;
@ -198,7 +198,7 @@ struct FsmExpand
for (auto &cell_it : module->cells) {
RTLIL::Cell *c = cell_it.second;
if (ct.cell_known(c->type))
if (ct.cell_known(c->type) && design->selected(mod, c))
for (auto &p : c->connections) {
if (ct.cell_output(c->type, p.first))
sig2driver.insert(assign_map(p.second), c);
@ -234,19 +234,32 @@ struct FsmExpand
};
struct FsmExpandPass : public Pass {
FsmExpandPass() : Pass("fsm_expand") { }
FsmExpandPass() : Pass("fsm_expand", "expand FSM cells by merging logic into it") { }
virtual void help()
{
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
log("\n");
log(" fsm_expand [selection]\n");
log("\n");
log("The fsm_extract pass is conservative about the cells that belong the a finate\n");
log("state machine. This pass can be used to merge additional auxiliary gates into\n");
log("the finate state machine.\n");
log("\n");
}
virtual void execute(std::vector<std::string> args, RTLIL::Design *design)
{
log_header("Executing FSM_EXPAND pass (re-assigning FSM state encoding).\n");
log_header("Executing FSM_EXPAND pass (merging auxiliary logic into FSMs).\n");
extra_args(args, 1, design);
for (auto &mod_it : design->modules) {
if (!design->selected(mod_it.second))
continue;
std::vector<RTLIL::Cell*> fsm_cells;
for (auto &cell_it : mod_it.second->cells)
if (cell_it.second->type == "$fsm")
if (cell_it.second->type == "$fsm" && design->selected(mod_it.second, cell_it.second))
fsm_cells.push_back(cell_it.second);
for (auto c : fsm_cells) {
FsmExpand fsm_expand(c, mod_it.second);
FsmExpand fsm_expand(c, design, mod_it.second);
fsm_expand.execute();
}
}