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Merge remote-tracking branch 'origin/xc7srl' into xc7mux

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This commit is contained in:
Eddie Hung 2019-04-22 11:45:49 -07:00
commit 4486a98fd5
77 changed files with 4701 additions and 347 deletions
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50
techlibs/xilinx/synth_xilinx.cc
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@ -64,10 +64,13 @@ struct SynthXilinxPass : public Pass
log(" (this feature is experimental and incomplete)\n");
log("\n");
log(" -nobram\n");
log(" disable infering of block rams\n");
log(" disable inference of block rams\n");
log("\n");
log(" -nodram\n");
log(" disable infering of distributed rams\n");
log(" disable inference of distributed rams\n");
log("\n");
log(" -nosrl\n");
log(" disable inference of shift registers\n");
log("\n");
log(" -run <from_label>:<to_label>\n");
log(" only run the commands between the labels (see below). an empty\n");
@ -108,23 +111,28 @@ struct SynthXilinxPass : public Pass
log(" techmap -map +/xilinx/drams_map.v\n");
log("\n");
log(" fine:\n");
log(" opt -fast -full\n");
log(" opt -fast\n");
log(" memory_map\n");
log(" dffsr2dff\n");
log(" dff2dffe\n");
log(" opt -full\n");
log(" techmap -map +/xilinx/arith_map.v\n");
log(" opt -fast\n");
log("\n");
log(" map_cells:\n");
log(" simplemap t:$dff t:$dffe (without '-nosrl' only)\n");
log(" pmux2shiftx (without '-nosrl' only)\n");
log(" opt_expr -mux_undef (without '-nosrl' only)\n");
log(" shregmap -tech xilinx -minlen 3 (without '-nosrl' only)\n");
log(" techmap -map +/xilinx/cells_map.v\n");
log(" opt -fast\n");
log(" clean\n");
log("\n");
log(" map_luts:\n");
log(" techmap -map +/techmap.v\n");
log(" opt -full\n");
log(" techmap -map +/techmap.v -D _NO_POS_SR -map +/xilinx/ff_map.v\n");
log(" abc -luts 2:2,3,6:5,10,20 [-dff]\n");
log(" clean\n");
log(" techmap -map +/xilinx/lut_map.v -map +/xilinx/ff_map.v\n");
log(" shregmap -minlen 3 -init -params -enpol any_or_none (without '-nosrl' only)\n");
log(" techmap -map +/xilinx/lut_map.v -map +/xilinx/ff_map.v -map +/xilinx/cells_map.v");
log(" dffinit -ff FDRE Q INIT -ff FDCE Q INIT -ff FDPE Q INIT -ff FDSE Q INIT \\\n");
log(" -ff FDRE_1 Q INIT -ff FDCE_1 Q INIT -ff FDPE_1 Q INIT -ff FDSE_1 Q INIT\n");
log("\n");
@ -152,6 +160,7 @@ struct SynthXilinxPass : public Pass
bool vpr = false;
bool nobram = false;
bool nodram = false;
bool nosrl = false;
size_t argidx;
for (argidx = 1; argidx < args.size(); argidx++)
@ -196,6 +205,10 @@ struct SynthXilinxPass : public Pass
nodram = true;
continue;
}
if (args[argidx] == "-nosrl") {
nosrl = true;
continue;
}
if (args[argidx] == "-abc9") {
abc = "abc9";
continue;
@ -275,6 +288,21 @@ struct SynthXilinxPass : public Pass
if (check_label(active, run_from, run_to, "map_cells"))
{
if (!nosrl) {
// shregmap operates on bit-level flops, not word-level,
// so break those down here
Pass::call(design, "simplemap t:$dff t:$dffe");
// shregmap -tech xilinx can cope with $shiftx and $mux
// cells for identifiying variable-length shift registers,
// so attempt to convert $pmux-es to the former
Pass::call(design, "pmux2shiftx");
// pmux2shiftx can leave behind a $pmux with a single entry
// -- need this to clean that up before shregmap
Pass::call(design, "opt_expr -mux_undef");
// shregmap with '-tech xilinx' infers variable length shift regs
Pass::call(design, "shregmap -tech xilinx -minlen 3");
}
Pass::call(design, "techmap -map +/xilinx/cells_map.v");
Pass::call(design, "clean");
}
@ -282,14 +310,18 @@ struct SynthXilinxPass : public Pass
if (check_label(active, run_from, run_to, "map_luts"))
{
Pass::call(design, "opt -full");
Pass::call(design, "techmap -map +/techmap.v -D _NO_POS_SR -map +/xilinx/ff_map.v");
Pass::call(design, "read_verilog +/xilinx/cells_box.v");
Pass::call(design, "techmap -map +/techmap.v");
if (abc == "abc9")
Pass::call(design, abc + " -lut +/xilinx/cells.lut -box +/xilinx/cells.box" + string(retime ? " -dff" : ""));
else
Pass::call(design, abc + " -luts 2:2,3,6:5,10,20" + string(retime ? " -dff" : ""));
Pass::call(design, "clean");
Pass::call(design, "techmap -map +/xilinx/lut_map.v -map +/xilinx/ff_map.v");
// This shregmap call infers fixed length shift registers after abc
// has performed any necessary retiming
if (!nosrl)
Pass::call(design, "shregmap -minlen 3 -init -params -enpol any_or_none");
Pass::call(design, "techmap -map +/xilinx/lut_map.v -map +/xilinx/ff_map.v -map +/xilinx/cells_map.v");
Pass::call(design, "dffinit -ff FDRE Q INIT -ff FDCE Q INIT -ff FDPE Q INIT -ff FDSE Q INIT "
"-ff FDRE_1 Q INIT -ff FDCE_1 Q INIT -ff FDPE_1 Q INIT -ff FDSE_1 Q INIT");
}