Add muxcover -mux2=cost option

diff --git a/passes/techmap/muxcover.cc b/passes/techmap/muxcover.cc
index c84cfc39a8821b6a60d175028a9a3551a106b4e9..4d9c111e7b4200b94c0bd165ac179dbae63f647f 100644 (file)
--- a/passes/techmap/muxcover.cc
+++ b/passes/techmap/muxcover.cc
@@ -631,7 +631,7 @@ struct MuxcoverPass : public Pass {
                log("\n");
                log("Cover trees of $_MUX_ cells with $_MUX{4,8,16}_ cells\n");
                log("\n");
-               log("    -mux4[=cost], -mux8[=cost], -mux16[=cost]\n");
+               log("    -mux2=cost, -mux4[=cost], -mux8[=cost], -mux16[=cost]\n");
                log("        Use the specified types of MUXes (with optional integer costs). If none\n");
                log("        of these options are given, the effect is the same as if all of them are.\n");
                log("        Default costs: $_MUX_ = %d, $_MUX4_ = %d,\n", COST_MUX2, COST_MUX4);
@@ -661,6 +661,7 @@ struct MuxcoverPass : public Pass {
                bool nodecode = false;
                bool nopartial = false;
                int cost_dmux = COST_DMUX;
+               int cost_mux2 = COST_MUX2;
                int cost_mux4 = COST_MUX4;
                int cost_mux8 = COST_MUX8;
                int cost_mux16 = COST_MUX16;
@@ -669,6 +670,10 @@ struct MuxcoverPass : public Pass {
                for (argidx = 1; argidx < args.size(); argidx++)
                {
                        const auto &arg = args[argidx];
+                       if (arg.size() >= 6 && arg.substr(0,6) == "-mux2=") {
+                               cost_mux2 = atoi(arg.substr(6).c_str());
+                               continue;
+                       }
                        if (arg.size() >= 5 && arg.substr(0,5) == "-mux4") {
                                use_mux4 = true;
                                if (arg.size() > 5) {
@@ -722,6 +727,7 @@ struct MuxcoverPass : public Pass {
                        worker.use_mux8 = use_mux8;
                        worker.use_mux16 = use_mux16;
                        worker.cost_dmux = cost_dmux;
+                       worker.cost_mux2 = cost_mux2;
                        worker.cost_mux4 = cost_mux4;
                        worker.cost_mux8 = cost_mux8;
                        worker.cost_mux16 = cost_mux16;