From 0ebee4c8e7743004ba0b7af714f3b1aff301bc61 Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Sat, 15 Mar 2014 22:51:12 +0100 Subject: Progress in Verific bindings --- frontends/verific/verific.cc | 55 +++++++++++++------------------------------- 1 file changed, 16 insertions(+), 39 deletions(-) diff --git a/frontends/verific/verific.cc b/frontends/verific/verific.cc index 4564d742..0e203a26 100644 --- a/frontends/verific/verific.cc +++ b/frontends/verific/verific.cc @@ -278,19 +278,22 @@ static bool import_netlist_instance_cells(RTLIL::Module *module, std::mapType() == OPER_SHIFT_LEFT) { - module->addShl(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, SIGNED); + module->addShl(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, false); return true; } if (inst->Type() == OPER_SHIFT_RIGHT) { - module->addShr(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, SIGNED); + Net *net_cin = inst->GetCin(); + Net *net_a_msb = inst->GetInput1Bit(0); + if (const_map.count(net_cin) && const_map.at(net_cin) == RTLIL::State::S0) + module->addShr(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, false); + else if (net_cin == net_a_msb) + module->addSshr(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, true); + else + log_error("Can't import Verific OPER_SHIFT_RIGHT instance %s: carry_in is neither 0 nor msb of left input\n", inst->Name()); return true; } -#endif if (inst->Type() == OPER_REDUCE_AND) { module->addReduceAnd(RTLIL::escape_id(inst->Name()), IN, net_map.at(inst->GetOutput()), SIGNED); @@ -307,33 +310,21 @@ static bool import_netlist_instance_cells(RTLIL::Module *module, std::mapType() == OPER_REDUCE_NAND) { - RTLIL::SigSpec tmp = module->new_wire(inst->OutputSize(), NEW_ID); - module->addReduceAnd(NEW_ID, IN, tmp, SIGNED); - module->addNot(RTLIL::escape_id(inst->Name()), tmp, net_map.at(inst->GetOutput())); - return true; - } - - if (inst->Type() == OPER_REDUCE_NOR) { - RTLIL::SigSpec tmp = module->new_wire(inst->OutputSize(), NEW_ID); - module->addReduceOr(NEW_ID, IN, tmp, SIGNED); - module->addNot(RTLIL::escape_id(inst->Name()), tmp, net_map.at(inst->GetOutput())); - return true; - } - if (inst->Type() == OPER_REDUCE_XNOR) { module->addReduceXnor(RTLIL::escape_id(inst->Name()), IN, net_map.at(inst->GetOutput()), SIGNED); return true; } -#if 0 - // FIXME: tests/simple/sincos.v exposes a bug in this operator - if (inst->Type() == OPER_LESSTHAN) { - module->addLt(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, SIGNED); + Net *net_cin = inst->GetCin(); + if (const_map.count(net_cin) && const_map.at(net_cin) == RTLIL::State::S0) + module->addLt(RTLIL::escape_id(inst->Name()), IN1, IN2, net_map.at(inst->GetOutput()), SIGNED); + else if (const_map.count(net_cin) && const_map.at(net_cin) == RTLIL::State::S1) + module->addLe(RTLIL::escape_id(inst->Name()), IN1, IN2, net_map.at(inst->GetOutput()), SIGNED); + else + log_error("Can't import Verific OPER_LESSTHAN instance %s: carry_in is neither 0 nor 1\n", inst->Name()); return true; } -#endif if (inst->Type() == OPER_WIDE_AND) { module->addAnd(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, SIGNED); @@ -350,20 +341,6 @@ static bool import_netlist_instance_cells(RTLIL::Module *module, std::mapType() == OPER_WIDE_NAND) { - RTLIL::SigSpec tmp1 = module->new_wire(inst->OutputSize(), NEW_ID); - module->addAnd(NEW_ID, IN1, IN2, tmp1, SIGNED); - module->addNot(RTLIL::escape_id(inst->Name()), tmp1, OUT, SIGNED); - return true; - } - - if (inst->Type() == OPER_WIDE_NOR) { - RTLIL::SigSpec tmp1 = module->new_wire(inst->OutputSize(), NEW_ID); - module->addOr(NEW_ID, IN1, IN2, tmp1, SIGNED); - module->addNot(RTLIL::escape_id(inst->Name()), tmp1, OUT, SIGNED); - return true; - } - if (inst->Type() == OPER_WIDE_XNOR) { module->addXnor(RTLIL::escape_id(inst->Name()), IN1, IN2, OUT, SIGNED); return true; -- cgit v1.2.3