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Replace synth call with components, reintroduce flags and correct vpr flag implementation

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TaoBi22 2022-09-28 12:42:27 +01:00 • committed by myrtle
parent df56178567
commit 2b07e01ea4
1 changed files with 76 additions and 4 deletions
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80
techlibs/fabulous/synth_fabulous.cc
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@ -47,22 +47,46 @@ struct SynthPass : public ScriptPass
log(" -lut <k>\n"); log(" -lut <k>\n");
log(" perform synthesis for a k-LUT architecture (default 4).\n"); log(" perform synthesis for a k-LUT architecture (default 4).\n");
log("\n"); log("\n");
log(" -vpr\n");
log(" perform synthesis for the FABulous VPR flow (using slightly different techmapping).\n");
log("\n");
log(" -plib <primitive_library.v>\n"); log(" -plib <primitive_library.v>\n");
log(" use the specified Verilog file as a primitive library.\n"); log(" use the specified Verilog file as a primitive library.\n");
log("\n"); log("\n");
log(" -encfile <file>\n");
log(" passed to 'fsm_recode' via 'fsm'\n");
log("\n");
log(" -nofsm\n");
log(" do not run FSM optimization\n");
log("\n");
log(" -noalumacc\n");
log(" do not run 'alumacc' pass. i.e. keep arithmetic operators in\n");
log(" their direct form ($add, $sub, etc.).\n");
log("\n");
log(" -nordff\n");
log(" passed to 'memory'. prohibits merging of FFs into memory read ports\n");
log("\n");
log(" -noshare\n");
log(" do not run SAT-based resource sharing\n");
log("\n");
log(" -run <from_label>[:<to_label>]\n"); log(" -run <from_label>[:<to_label>]\n");
log(" only run the commands between the labels (see below). an empty\n"); log(" only run the commands between the labels (see below). an empty\n");
log(" from label is synonymous to 'begin', and empty to label is\n"); log(" from label is synonymous to 'begin', and empty to label is\n");
log(" synonymous to the end of the command list.\n"); log(" synonymous to the end of the command list.\n");
log("\n"); log("\n");
log(" -no-rw-check\n");
log(" marks all recognized read ports as \"return don't-care value on\n");
log(" read/write collision\" (same result as setting the no_rw_check\n");
log(" attribute on all memories).\n");
log("\n");
log("\n"); log("\n");
log("The following commands are executed by this synthesis command:\n"); log("The following commands are executed by this synthesis command:\n");
help_script(); help_script();
log("\n"); log("\n");
} }
string top_module, plib; string top_module, plib, fsm_opts, memory_opts;
bool autotop, forvpr; bool autotop, forvpr, noalumacc, nofsm, noshare;
int lut; int lut;
void clear_flags() override void clear_flags() override
@ -72,6 +96,9 @@ struct SynthPass : public ScriptPass
autotop = false; autotop = false;
lut = 4; lut = 4;
forvpr = false; forvpr = false;
noalumacc = false;
nofsm = false;
noshare = false;
} }
// TODO: bring back relevant flags to carry through to synth call // TODO: bring back relevant flags to carry through to synth call
@ -114,6 +141,26 @@ struct SynthPass : public ScriptPass
plib = args[++argidx]; plib = args[++argidx];
continue; continue;
} }
if (args[argidx] == "-nofsm") {
nofsm = true;
continue;
}
if (args[argidx] == "-noalumacc") {
noalumacc = true;
continue;
}
if (args[argidx] == "-nordff") {
memory_opts += " -nordff";
continue;
}
if (args[argidx] == "-noshare") {
noshare = true;
continue;
}
if (args[argidx] == "-no-rw-check") {
memory_opts += " -no-rw-check";
continue;
}
break; break;
} }
extra_args(args, argidx, design); extra_args(args, argidx, design);
@ -147,7 +194,32 @@ struct SynthPass : public ScriptPass
run("proc"); run("proc");
run("tribuf -logic"); run("tribuf -logic");
run("deminout"); run("deminout");
run("synth -run coarse");
// synth pass
run("proc");
run("opt_expr");
run("opt_clean");
run("check");
run("opt -nodffe -nosdff");
if (!nofsm)
run("fsm" + fsm_opts, " (unless -nofsm)");
run("opt");
run("wreduce");
run("peepopt");
run("opt_clean");
if (help_mode)
run("techmap -map +/cmp2lut.v -map +/cmp2lcu.v", " (if -lut)");
else if (lut)
run(stringf("techmap -map +/cmp2lut.v -map +/cmp2lcu.v -D LUT_WIDTH=%d", lut));
if (!noalumacc)
run("alumacc", " (unless -noalumacc)");
if (!noshare)
run("share", " (unless -noshare)");
run("opt");
run("memory -nomap" + memory_opts);
run("opt_clean");
run("memory_map"); run("memory_map");
run("opt -full"); run("opt -full");
run("techmap -map +/techmap.v"); run("techmap -map +/techmap.v");
@ -156,7 +228,7 @@ struct SynthPass : public ScriptPass
run("techmap -map +/fabulous/latches_map.v"); run("techmap -map +/fabulous/latches_map.v");
run("abc -lut $LUT_K -dress"); run("abc -lut $LUT_K -dress");
run("clean"); run("clean");
if (forvpr) if (!forvpr)
run("techmap -D LUT_K=$LUT_K -map +/fabulous/cells_map.v"); run("techmap -D LUT_K=$LUT_K -map +/fabulous/cells_map.v");
run("clean"); run("clean");
run("hierarchy -check"); run("hierarchy -check");