diff options
Diffstat (limited to 'techlibs/ice40/ice40_opt.cc')
| -rw-r--r-- | techlibs/ice40/ice40_opt.cc | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/techlibs/ice40/ice40_opt.cc b/techlibs/ice40/ice40_opt.cc index edb293b93..f528607d6 100644 --- a/techlibs/ice40/ice40_opt.cc +++ b/techlibs/ice40/ice40_opt.cc @@ -47,20 +47,16 @@ static void run_ice40_opts(Module *module) continue; } - if (cell->type.in("\\SB_CARRY", "\\ICE40_CARRY_LUT")) + if (cell->type == "\\SB_CARRY") { SigSpec non_const_inputs, replacement_output; int count_zeros = 0, count_ones = 0; SigBit inbit[3] = { + get_bit_or_zero(cell->getPort("\\I0")), get_bit_or_zero(cell->getPort("\\I1")), get_bit_or_zero(cell->getPort("\\CI")) }; - if (cell->type == "\\SB_CARRY") - inbit[2] = get_bit_or_zero(cell->getPort("\\I0")); - else if (cell->type == "\\ICE40_CARRY_LUT") - inbit[2] = get_bit_or_zero(cell->getPort("\\I2")); - else log_abort(); for (int i = 0; i < 3; i++) if (inbit[i].wire == nullptr) { if (inbit[i] == State::S1) @@ -83,14 +79,6 @@ static void run_ice40_opts(Module *module) module->design->scratchpad_set_bool("opt.did_something", true); log("Optimized away SB_CARRY cell %s.%s: CO=%s\n", log_id(module), log_id(cell), log_signal(replacement_output)); - - if (cell->type == "\\ICE40_CARRY_LUT") - module->addLut(NEW_ID, - { RTLIL::S0, cell->getPort("\\I1"), cell->getPort("\\I2"), cell->getPort("\\CI") }, - cell->getPort("\\O"), - RTLIL::Const("0110_1001_1001_0110"), - cell->get_src_attribute()); - module->remove(cell); } continue; |