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glift: Add support for $_NAND_ and $_NOR_ cells.

This commit is contained in:
Alberto Gonzalez 2020-06-22 06:03:36 +00:00
parent 8cb1a86c23
commit 3eb2593876
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GPG Key ID: 8395A8BA109708B2
1 changed files with 11 additions and 8 deletions
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19
passes/cmds/glift.cc
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@ -116,10 +116,11 @@ struct GliftPass : public Pass {
void add_precise_GLIFT_logic(const RTLIL::Cell *cell, RTLIL::SigSpec &port_a, RTLIL::SigSpec &port_a_taint, RTLIL::SigSpec &port_b, RTLIL::SigSpec &port_b_taint, RTLIL::SigSpec &port_y_taint) {
//AKA AN2_SH2 or OR2_SH2
bool is_and = cell->type.in("$_AND_", "$_NAND_");
RTLIL::SigSpec n_port_a = module->LogicNot(cell->name.str() + "_t_1_1", port_a, false, cell->get_src_attribute());
RTLIL::SigSpec n_port_b = module->LogicNot(cell->name.str() + "_t_1_2", port_b, false, cell->get_src_attribute());
auto subexpr1 = module->And(cell->name.str() + "_t_1_3", (cell->type == "$_AND_")? port_a : n_port_a, port_b_taint, false, cell->get_src_attribute());
auto subexpr2 = module->And(cell->name.str() + "_t_1_4", (cell->type == "$_AND_")? port_b : n_port_b, port_a_taint, false, cell->get_src_attribute());
auto subexpr1 = module->And(cell->name.str() + "_t_1_3", is_and? port_a : n_port_a, port_b_taint, false, cell->get_src_attribute());
auto subexpr2 = module->And(cell->name.str() + "_t_1_4", is_and? port_b : n_port_b, port_a_taint, false, cell->get_src_attribute());
auto subexpr3 = module->And(cell->name.str() + "_t_1_5", port_a_taint, port_b_taint, false, cell->get_src_attribute());
auto subexpr4 = module->Or(cell->name.str() + "_t_1_6", subexpr1, subexpr2, false, cell->get_src_attribute());
module->addOr(cell->name.str() + "_t_1_7", subexpr4, subexpr3, port_y_taint, false, cell->get_src_attribute());
@ -127,16 +128,18 @@ struct GliftPass : public Pass {
void add_imprecise_GLIFT_logic_1(const RTLIL::Cell *cell, RTLIL::SigSpec &port_a, RTLIL::SigSpec &port_a_taint, RTLIL::SigSpec &port_b, RTLIL::SigSpec &port_b_taint, RTLIL::SigSpec &port_y_taint) {
//AKA AN2_SH3 or OR2_SH3
bool is_and = cell->type.in("$_AND_", "$_NAND_");
RTLIL::SigSpec n_port_a = module->LogicNot(cell->name.str() + "_t_2_1", port_a, false, cell->get_src_attribute());
auto subexpr1 = module->And(cell->name.str() + "_t_2_2", (cell->type == "$_AND_")? port_b : n_port_a, (cell->type == "$_AND_")? port_a_taint : port_b_taint, false, cell->get_src_attribute());
module->addOr(cell->name.str() + "_t_2_3", (cell->type == "$_AND_")? port_b_taint : port_a_taint, subexpr1, port_y_taint, false, cell->get_src_attribute());
auto subexpr1 = module->And(cell->name.str() + "_t_2_2", is_and? port_b : n_port_a, is_and? port_a_taint : port_b_taint, false, cell->get_src_attribute());
module->addOr(cell->name.str() + "_t_2_3", is_and? port_b_taint : port_a_taint, subexpr1, port_y_taint, false, cell->get_src_attribute());
}
void add_imprecise_GLIFT_logic_2(const RTLIL::Cell *cell, RTLIL::SigSpec &port_a, RTLIL::SigSpec &port_a_taint, RTLIL::SigSpec &port_b, RTLIL::SigSpec &port_b_taint, RTLIL::SigSpec &port_y_taint) {
//AKA AN2_SH4 or OR2_SH4
bool is_and = cell->type.in("$_AND_", "$_NAND_");
RTLIL::SigSpec n_port_b = module->LogicNot(cell->name.str() + "_t_3_1", port_b, false, cell->get_src_attribute());
auto subexpr1 = module->And(cell->name.str() + "_t_3_2", (cell->type == "$_AND_")? port_a : n_port_b, (cell->type == "$_AND_")? port_b_taint : port_a_taint, false, cell->get_src_attribute());
module->addOr(cell->name.str() + "_t_3_3", (cell->type == "$_AND_")? port_a_taint : port_b_taint, subexpr1, port_y_taint, false, cell->get_src_attribute());
auto subexpr1 = module->And(cell->name.str() + "_t_3_2", is_and? port_a : n_port_b, is_and? port_b_taint : port_a_taint, false, cell->get_src_attribute());
module->addOr(cell->name.str() + "_t_3_3", is_and? port_a_taint : port_b_taint, subexpr1, port_y_taint, false, cell->get_src_attribute());
}
void add_imprecise_GLIFT_logic_3(const RTLIL::Cell *cell, RTLIL::SigSpec &port_a_taint, RTLIL::SigSpec &port_b_taint, RTLIL::SigSpec &port_y_taint) {
@ -227,10 +230,10 @@ struct GliftPass : public Pass {
std::vector<RTLIL::SigSig> connections(module->connections());
for(auto &cell : module->cells().to_vector()) {
if (!cell->type.in({"$_AND_", "$_OR_", "$_XOR_", "$_XNOR_", "$_MUX_", "$_NMUX_", "$_NOT_", "$anyconst", "$allconst", "$assume", "$assert"}) && module->design->module(cell->type) == nullptr) {
if (!cell->type.in({"$_AND_", "$_NAND_", "$_OR_", "$_NOR_", "$_XOR_", "$_XNOR_", "$_MUX_", "$_NMUX_", "$_NOT_", "$anyconst", "$allconst", "$assume", "$assert"}) && module->design->module(cell->type) == nullptr) {
log_cmd_error("Unsupported cell type \"%s\" found. Run `techmap` first.\n", cell->type.c_str());
}
if (cell->type.in("$_AND_", "$_OR_")) {
if (cell->type.in("$_AND_", "$_NAND_", "$_OR_", "$_NOR_")) {
const unsigned int A = 0, B = 1, Y = 2;
const unsigned int NUM_PORTS = 3;
RTLIL::SigSpec ports[NUM_PORTS] = {cell->getPort(ID::A), cell->getPort(ID::B), cell->getPort(ID::Y)};