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| author | Clifford Wolf <clifford@clifford.at> | 2013-03-29 11:19:21 +0100 |
|---|---|---|
| committer | Clifford Wolf <clifford@clifford.at> | 2013-03-29 11:19:21 +0100 |
| commit | 88af5b6a162ebc4fcc753794b38491e7897b702a (patch) | |
| tree | dbf51c9f01b4bb7fe5224d0f558d6bc4ce09c867 /passes/opt | |
| parent | 0d48b846ac8ed74b607fc4706e742a45ab86f2dd (diff) | |
| download | yosys-88af5b6a162ebc4fcc753794b38491e7897b702a.tar.gz yosys-88af5b6a162ebc4fcc753794b38491e7897b702a.tar.bz2 yosys-88af5b6a162ebc4fcc753794b38491e7897b702a.zip | |
Improved opt_share for reduce cells
Diffstat (limited to 'passes/opt')
| -rw-r--r-- | passes/opt/opt_share.cc | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/passes/opt/opt_share.cc b/passes/opt/opt_share.cc index 6dd4daa0b..43d1a57e1 100644 --- a/passes/opt/opt_share.cc +++ b/passes/opt/opt_share.cc @@ -76,6 +76,18 @@ struct OptShareWorker alt_conn["\\B"] = conn->at("\\A"); } conn = &alt_conn; + } else + if (cell->type == "$reduce_xor" || cell->type == "$reduce_xnor") { + alt_conn = *conn; + assign_map.apply(alt_conn.at("\\A")); + alt_conn.at("\\A").sort(); + conn = &alt_conn; + } else + if (cell->type == "$reduce_and" || cell->type == "$reduce_or" || cell->type == "$reduce_bool") { + alt_conn = *conn; + assign_map.apply(alt_conn.at("\\A")); + alt_conn.at("\\A").sort_and_unify(); + conn = &alt_conn; } for (auto &it : *conn) { @@ -151,6 +163,14 @@ struct OptShareWorker conn2["\\A"] = conn2["\\B"]; conn2["\\B"] = tmp; } + } else + if (cell1->type == "$reduce_xor" || cell1->type == "$reduce_xnor") { + conn1["\\A"].sort(); + conn2["\\A"].sort(); + } else + if (cell1->type == "$reduce_and" || cell1->type == "$reduce_or" || cell1->type == "$reduce_bool") { + conn1["\\A"].sort_and_unify(); + conn2["\\A"].sort_and_unify(); } if (conn1 != conn2) { |