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Add "synth_xilinx -dff" option, cleanup abc9

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This commit is contained in:
Eddie Hung 2019-12-30 14:13:16 -08:00
parent 52a27700e2
commit d7ada66497
4 changed files with 120 additions and 53 deletions
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16
techlibs/xilinx/synth_xilinx.cc
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@ -109,6 +109,9 @@ struct SynthXilinxPass : public ScriptPass
log(" -flatten\n");
log(" flatten design before synthesis\n");
log("\n");
log(" -dff\n");
log(" run 'abc9' with -dff option\n");
log("\n");
log(" -retime\n");
log(" run 'abc' with -dff option\n");
log("\n");
@ -122,7 +125,8 @@ struct SynthXilinxPass : public ScriptPass
}
std::string top_opt, edif_file, blif_file, family;
bool flatten, retime, vpr, ise, iopad, noiopad, noclkbuf, nobram, nolutram, nosrl, nocarry, nowidelut, nodsp, uram, abc9;
bool flatten, retime, vpr, ise, iopad, noiopad, noclkbuf, nobram, nolutram, nosrl, nocarry, nowidelut, nodsp, uram;
bool abc9, dff_mode;
bool flatten_before_abc;
int widemux;
@ -148,6 +152,7 @@ struct SynthXilinxPass : public ScriptPass
nodsp = false;
uram = false;
abc9 = false;
dff_mode = false;
flatten_before_abc = false;
widemux = 0;
}
@ -256,6 +261,10 @@ struct SynthXilinxPass : public ScriptPass
uram = true;
continue;
}
if (args[argidx] == "-dff") {
dff_mode = true;
continue;
}
break;
}
extra_args(args, argidx, design);
@ -540,7 +549,10 @@ struct SynthXilinxPass : public ScriptPass
if (family != "xc7")
log_warning("'synth_xilinx -abc9' not currently supported for the '%s' family, "
"will use timing for 'xc7' instead.\n", family.c_str());
run("techmap -map +/xilinx/abc9_map.v -max_iter 1");
std::string techmap_args = "-map +/xilinx/abc9_map.v -max_iter 1";
if (dff_mode)
techmap_args += " -D DFF_MODE";
run("techmap " + techmap_args);
run("read_verilog -icells -lib +/xilinx/abc9_model.v");
std::string abc9_opts = " -box +/xilinx/abc9_xc7.box";
abc9_opts += stringf(" -W %d", XC7_WIRE_DELAY);