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Merge remote-tracking branch 'origin/master' into xaig_dff

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This commit is contained in:
Eddie Hung 2019-12-19 10:29:40 -08:00
commit 94f15f023c
47 changed files with 2053 additions and 184 deletions
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16
techlibs/xilinx/synth_xilinx.cc
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@ -445,6 +445,16 @@ struct SynthXilinxPass : public ScriptPass
}
if (check_label("map_ffram")) {
// Required for dffsr2dff to work.
run("simplemap t:$dff t:$adff t:$mux");
// Needs to be done before opt -mux_bool happens.
run("dffsr2dff");
if (help_mode)
run("dff2dffs [-match-init]", "(-match-init for xc6s only)");
else if (family == "xc6s")
run("dff2dffs -match-init");
else
run("dff2dffs");
if (widemux > 0)
run("opt -fast -mux_bool -undriven -fine"); // Necessary to omit -mux_undef otherwise muxcover
// performs less efficiently
@ -454,14 +464,11 @@ struct SynthXilinxPass : public ScriptPass
}
if (check_label("fine")) {
run("dffsr2dff");
run("dff2dffe");
run("dff2dffe -direct-match $_DFF_* -direct-match $__DFFS_*");
if (help_mode) {
run("simplemap t:$mux", " ('-widemux' only)");
run("muxcover <internal options>, ('-widemux' only)");
}
else if (widemux > 0) {
run("simplemap t:$mux");
constexpr int cost_mux2 = 100;
std::string muxcover_args = stringf(" -nodecode -mux2=%d", cost_mux2);
switch (widemux) {
@ -563,6 +570,7 @@ struct SynthXilinxPass : public ScriptPass
else if (!abc9)
techmap_args += stringf(" -map %s", ff_map_file.c_str());
run("techmap " + techmap_args, "(option without '-abc9')");
run("xilinx_dffopt");
}
if (check_label("finalize")) {