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Get rid of dffsr2dff.

Browse source 
This pass is a proper subset of opt_rmdff, which is called by opt, which
is called by every synth flow in the coarse part.  Thus, it never
actually does anything and can be safely removed.
This commit is contained in:
Marcelina Kościelnicka 2020-04-11 18:36:51 +02:00
parent 85166633bc
commit 38a0c30d65
13 changed files with 2309 additions and 429 deletions
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1
techlibs/achronix/synth_achronix.cc
View file

@ -144,7 +144,6 @@ struct SynthAchronixPass : public ScriptPass {
run("opt -fast -mux_undef -undriven -fine -full");
run("memory_map");
run("opt -undriven -fine");
run("dffsr2dff");
run("dff2dffe -direct-match $_DFF_*");
run("opt -fine");
run("techmap -map +/techmap.v");

1
techlibs/anlogic/synth_anlogic.cc
View file

@ -182,7 +182,6 @@ struct SynthAnlogicPass : public ScriptPass
if (check_label("map_ffs"))
{
run("dffsr2dff");
run("techmap -D NO_LUT -map +/anlogic/cells_map.v");
run("dffinit -strinit SET RESET -ff AL_MAP_SEQ q REGSET -noreinit");
run("opt_expr -mux_undef");

1
techlibs/ecp5/synth_ecp5.cc
View file

@ -298,7 +298,6 @@ struct SynthEcp5Pass : public ScriptPass
if (check_label("map_ffs"))
{
run("dffsr2dff");
run("dff2dffs");
run("opt_clean");
if (!nodffe)

1
techlibs/efinix/synth_efinix.cc
View file

@ -182,7 +182,6 @@ struct SynthEfinixPass : public ScriptPass
if (check_label("map_ffs"))
{
run("dffsr2dff");
run("techmap -D NO_LUT -map +/efinix/cells_map.v");
run("dffinit -strinit SET RESET -ff AL_MAP_SEQ q REGSET -noreinit");
run("opt_expr -mux_undef");

1
techlibs/gowin/synth_gowin.cc
View file

@ -219,7 +219,6 @@ struct SynthGowinPass : public ScriptPass
if (check_label("map_ffs"))
{
run("dffsr2dff");
run("dff2dffs -match-init");
run("opt_clean");
if (!nodffe)

1
techlibs/ice40/synth_ice40.cc
View file

@ -341,7 +341,6 @@ struct SynthIce40Pass : public ScriptPass
if (check_label("map_ffs"))
{
run("dffsr2dff");
if (!nodffe)
run("dff2dffe -direct-match $_DFF_*");
if (min_ce_use >= 0) {

1
techlibs/intel/synth_intel.cc
View file

@ -202,7 +202,6 @@ struct SynthIntelPass : public ScriptPass {
run("opt -fast -mux_undef -undriven -fine -full");
run("memory_map");
run("opt -undriven -fine");
run("dffsr2dff");
run("dff2dffe -direct-match $_DFF_*");
run("opt -fine");
run("techmap -map +/techmap.v");

1
techlibs/sf2/synth_sf2.cc
View file

@ -187,7 +187,6 @@ struct SynthSf2Pass : public ScriptPass
if (check_label("map_ffs"))
{
run("dffsr2dff");
run("techmap -D NO_LUT -map +/sf2/cells_map.v");
run("opt_expr -mux_undef");
run("simplemap");

3
techlibs/xilinx/synth_xilinx.cc
View file

@ -522,10 +522,9 @@ struct SynthXilinxPass : public ScriptPass
}
if (check_label("map_ffram")) {
// Required for dffsr2dff to work.
// Required for dff2dffs 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")