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abc9_ops: -prep_dff_map to warn if no specify cells

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This commit is contained in:
Eddie Hung 2020-04-14 07:49:55 -07:00
parent 23c53a6bdd
commit e38b1280f9
1 changed files with 12 additions and 7 deletions
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5
passes/techmap/abc9_ops.cc
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@ -206,6 +206,10 @@ void prep_dff_map(RTLIL::Design *design)
D = w; D = w;
} }
if (GetSize(specify_cells) == 0) {
log_warning("Module '%s' marked (* abc9_flop *) contains no specify timing information.\n", log_id(module));
}
else {
// Rewrite $specify cells that end with $_DFF_[NP]_.Q // Rewrite $specify cells that end with $_DFF_[NP]_.Q
// to $_DFF_[NP]_.D since it will be moved into // to $_DFF_[NP]_.D since it will be moved into
// the submodule // the submodule
@ -214,6 +218,7 @@ void prep_dff_map(RTLIL::Design *design)
DST.replace(Q, D); DST.replace(Q, D);
cell->setPort(ID::DST, DST); cell->setPort(ID::DST, DST);
} }
}
continue_outer_loop: ; continue_outer_loop: ;
} }
} }