diff options
Diffstat (limited to 'techlibs/ice40/synth_ice40.cc')
| -rw-r--r-- | techlibs/ice40/synth_ice40.cc | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/techlibs/ice40/synth_ice40.cc b/techlibs/ice40/synth_ice40.cc index 1d23cd954..dff12f8a9 100644 --- a/techlibs/ice40/synth_ice40.cc +++ b/techlibs/ice40/synth_ice40.cc @@ -66,7 +66,7 @@ struct SynthIce40Pass : public Pass { log(" opt -fast -mux_undef -undriven -fine\n"); log(" memory_map\n"); log(" opt -undriven -fine\n"); - log(" techmap\n"); + log(" techmap -map +/techmap.v -map +/ice40/arith_map.v\n"); log(" opt -fast\n"); log("\n"); log(" map_ffs:\n"); @@ -95,6 +95,7 @@ struct SynthIce40Pass : public Pass { { std::string top_opt = "-auto-top"; std::string run_from, run_to; + bool nocarry = false; size_t argidx; for (argidx = 1; argidx < args.size(); argidx++) @@ -111,6 +112,10 @@ struct SynthIce40Pass : public Pass { run_to = args[argidx].substr(pos+1); continue; } + if (args[argidx] == "-nocarry") { + nocarry = true; + continue; + } break; } extra_args(args, argidx, design); @@ -139,7 +144,10 @@ struct SynthIce40Pass : public Pass { Pass::call(design, "opt -fast -mux_undef -undriven -fine"); Pass::call(design, "memory_map"); Pass::call(design, "opt -undriven -fine"); - Pass::call(design, "techmap"); + if (nocarry) + Pass::call(design, "techmap"); + else + Pass::call(design, "techmap -map +/techmap.v -map +/ice40/arith_map.v"); Pass::call(design, "opt -fast"); } |