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authorClifford Wolf <clifford@clifford.at>2015-04-05 09:45:14 +0200
committerClifford Wolf <clifford@clifford.at>2015-04-05 09:45:14 +0200
commit706631225e9ef0d2954c4bef51aaa2817e0f5e86 (patch)
tree41ed96a4f75f44b6b7e0502c00c7b8a3275926b7 /passes/abc
parentc52a4cdeede6904f9b0d91a61a3fbeaade71a46a (diff)
Added $_MUX4_, $_MUX8_, and $_MUX16_ cell types
Diffstat (limited to 'passes/abc')
-rw-r--r--passes/abc/abc.cc88
1 files changed, 88 insertions, 0 deletions
diff --git a/passes/abc/abc.cc b/passes/abc/abc.cc
index 8cd0211c..81cf2bd4 100644
--- a/passes/abc/abc.cc
+++ b/passes/abc/abc.cc
@@ -90,6 +90,10 @@ struct gate_t
RTLIL::SigBit bit;
};
+bool map_mux4;
+bool map_mux8;
+bool map_mux16;
+
bool markgroups;
int map_autoidx;
SigMap assign_map;
@@ -844,6 +848,12 @@ void abc_module(RTLIL::Design *design, RTLIL::Module *current_module, std::strin
fprintf(f, "GATE AOI4 %d Y=!((A*B)+(C*D)); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_AOI4_"));
fprintf(f, "GATE OAI4 %d Y=!((A+B)*(C+D)); PIN * INV 1 999 1 0 1 0\n", get_cell_cost("$_OAI4_"));
fprintf(f, "GATE MUX %d Y=(A*B)+(S*B)+(!S*A); PIN * UNKNOWN 1 999 1 0 1 0\n", get_cell_cost("$_MUX_"));
+ if (map_mux4)
+ fprintf(f, "GATE MUX4 %d Y=(!S*!T*A)+(S*!T*B)+(!S*T*C)+(S*T*D); PIN * UNKNOWN 1 999 1 0 1 0\n", 2*get_cell_cost("$_MUX_"));
+ if (map_mux8)
+ fprintf(f, "GATE MUX8 %d Y=(!S*!T*!U*A)+(S*!T*!U*B)+(!S*T*!U*C)+(S*T*!U*D)+(!S*!T*U*E)+(S*!T*U*F)+(!S*T*U*G)+(S*T*U*H); PIN * UNKNOWN 1 999 1 0 1 0\n", 4*get_cell_cost("$_MUX_"));
+ if (map_mux16)
+ fprintf(f, "GATE MUX16 %d Y=(!S*!T*!U*!V*A)+(S*!T*!U*!V*B)+(!S*T*!U*!V*C)+(S*T*!U*!V*D)+(!S*!T*U*!V*E)+(S*!T*U*!V*F)+(!S*T*U*!V*G)+(S*T*U*!V*H)+(!S*!T*!U*V*I)+(S*!T*!U*V*J)+(!S*T*!U*V*K)+(S*T*!U*V*L)+(!S*!T*U*V*M)+(S*!T*U*V*N)+(!S*T*U*V*O)+(S*T*U*V*P); PIN * UNKNOWN 1 999 1 0 1 0\n", 8*get_cell_cost("$_MUX_"));
fclose(f);
if (lut_mode) {
@@ -934,6 +944,64 @@ void abc_module(RTLIL::Design *design, RTLIL::Module *current_module, std::strin
design->select(module, cell);
continue;
}
+ if (c->type == "\\MUX4") {
+ RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_MUX4_");
+ if (markgroups) cell->attributes["\\abcgroup"] = map_autoidx;
+ cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
+ cell->setPort("\\B", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\B").as_wire()->name)]));
+ cell->setPort("\\C", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\C").as_wire()->name)]));
+ cell->setPort("\\D", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\D").as_wire()->name)]));
+ cell->setPort("\\S", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\S").as_wire()->name)]));
+ cell->setPort("\\T", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\T").as_wire()->name)]));
+ cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
+ design->select(module, cell);
+ continue;
+ }
+ if (c->type == "\\MUX8") {
+ RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_MUX8_");
+ if (markgroups) cell->attributes["\\abcgroup"] = map_autoidx;
+ cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
+ cell->setPort("\\B", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\B").as_wire()->name)]));
+ cell->setPort("\\C", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\C").as_wire()->name)]));
+ cell->setPort("\\D", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\D").as_wire()->name)]));
+ cell->setPort("\\E", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\E").as_wire()->name)]));
+ cell->setPort("\\F", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\F").as_wire()->name)]));
+ cell->setPort("\\G", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\G").as_wire()->name)]));
+ cell->setPort("\\H", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\H").as_wire()->name)]));
+ cell->setPort("\\S", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\S").as_wire()->name)]));
+ cell->setPort("\\T", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\T").as_wire()->name)]));
+ cell->setPort("\\U", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\U").as_wire()->name)]));
+ cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
+ design->select(module, cell);
+ continue;
+ }
+ if (c->type == "\\MUX16") {
+ RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_MUX16_");
+ if (markgroups) cell->attributes["\\abcgroup"] = map_autoidx;
+ cell->setPort("\\A", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\A").as_wire()->name)]));
+ cell->setPort("\\B", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\B").as_wire()->name)]));
+ cell->setPort("\\C", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\C").as_wire()->name)]));
+ cell->setPort("\\D", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\D").as_wire()->name)]));
+ cell->setPort("\\E", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\E").as_wire()->name)]));
+ cell->setPort("\\F", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\F").as_wire()->name)]));
+ cell->setPort("\\G", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\G").as_wire()->name)]));
+ cell->setPort("\\H", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\H").as_wire()->name)]));
+ cell->setPort("\\I", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\I").as_wire()->name)]));
+ cell->setPort("\\J", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\J").as_wire()->name)]));
+ cell->setPort("\\K", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\K").as_wire()->name)]));
+ cell->setPort("\\L", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\L").as_wire()->name)]));
+ cell->setPort("\\M", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\M").as_wire()->name)]));
+ cell->setPort("\\N", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\N").as_wire()->name)]));
+ cell->setPort("\\O", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\O").as_wire()->name)]));
+ cell->setPort("\\P", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\P").as_wire()->name)]));
+ cell->setPort("\\S", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\S").as_wire()->name)]));
+ cell->setPort("\\T", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\T").as_wire()->name)]));
+ cell->setPort("\\U", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\U").as_wire()->name)]));
+ cell->setPort("\\V", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\V").as_wire()->name)]));
+ cell->setPort("\\Y", RTLIL::SigSpec(module->wires_[remap_name(c->getPort("\\Y").as_wire()->name)]));
+ design->select(module, cell);
+ continue;
+ }
if (c->type == "\\AOI3" || c->type == "\\OAI3") {
RTLIL::Cell *cell = module->addCell(remap_name(c->name), "$_" + c->type.substr(1) + "_");
if (markgroups) cell->attributes["\\abcgroup"] = map_autoidx;
@@ -1150,6 +1218,10 @@ struct AbcPass : public Pass {
log(" the area cost doubles with each additional input bit. the delay cost\n");
log(" is still constant for all lut widths.\n");
log("\n");
+ // log(" -mux4, -mux8, -mux16\n");
+ // log(" try to extract 4-input, 8-input, and/or 16-input muxes\n");
+ // log(" (ignored when used with -liberty or -lut)\n");
+ // log("\n");
log(" -dff\n");
log(" also pass $_DFF_?_ and $_DFFE_??_ cells through ABC. modules with many\n");
log(" clock domains are automatically partitioned in clock domains and each\n");
@@ -1197,6 +1269,10 @@ struct AbcPass : public Pass {
int lut_mode = 0, lut_mode2 = 0;
markgroups = false;
+ map_mux4 = false;
+ map_mux8 = false;
+ map_mux16 = false;
+
#ifdef _WIN32
if (!check_file_exists(exe_file + ".exe") && check_file_exists(proc_self_dirname() + "..\\yosys-abc.exe"))
exe_file = proc_self_dirname() + "..\\yosys-abc";
@@ -1248,6 +1324,18 @@ struct AbcPass : public Pass {
}
continue;
}
+ if (arg == "-mux4") {
+ map_mux4 = true;
+ continue;
+ }
+ if (arg == "-mux8") {
+ map_mux8 = true;
+ continue;
+ }
+ if (arg == "-mux16") {
+ map_mux16 = true;
+ continue;
+ }
if (arg == "-fast") {
fast_mode = true;
continue;