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Revert "ecp5: replace ecp5_ffinit with techmap rules + dff2dffs -match-init"

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This reverts commit 8c702b6cc0221a00021a3e4661c883bb591c924b.
This commit is contained in:
Eddie Hung 2020-04-14 12:56:28 -07:00
parent 8bad885e78
commit 0d84ff3fc4
3 changed files with 57 additions and 213 deletions
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3
techlibs/ecp5/synth_ecp5.cc
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@ -311,7 +311,7 @@ struct SynthEcp5Pass : public ScriptPass
if (check_label("map_ffs"))
{
run("dff2dffs -match-init");
run("dff2dffs");
run("opt_clean");
if (!nodffe)
run("dff2dffe -direct-match $_DFF_* -direct-match $__DFFS_*");
@ -320,6 +320,7 @@ struct SynthEcp5Pass : public ScriptPass
run(stringf("techmap -D NO_LUT %s -map +/ecp5/cells_map.v", help_mode ? "[-D ASYNC_PRLD]" : (asyncprld ? "-D ASYNC_PRLD" : "")));
run("opt_expr -undriven -mux_undef");
run("simplemap");
run("ecp5_ffinit");
run("ecp5_gsr");
run("attrmvcp -copy -attr syn_useioff");
run("opt_clean");