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| author | clairexen <claire@symbioticeda.com> | 2020-06-23 20:25:52 +0200 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-06-23 20:25:52 +0200 |
| commit | 2a59cd9ed0c6d4ddf19fc735682fa236018bcf2c (patch) | |
| tree | fc1d103152be86dbb4fc83b5566b17e9b1490445 /passes/opt/wreduce.cc | |
| parent | 8c4cb1885b2cb6b7b26d7b9b7113e174c0eefffd (diff) | |
| parent | 88e7f90663f440b24d97a65804ee23b1d82dbed7 (diff) | |
| download | yosys-2a59cd9ed0c6d4ddf19fc735682fa236018bcf2c.tar.gz yosys-2a59cd9ed0c6d4ddf19fc735682fa236018bcf2c.tar.bz2 yosys-2a59cd9ed0c6d4ddf19fc735682fa236018bcf2c.zip | |
Merge pull request #1818 from YosysHQ/mwk/new-ff-types
Add new FF types to library.
Diffstat (limited to 'passes/opt/wreduce.cc')
| -rw-r--r-- | passes/opt/wreduce.cc | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/passes/opt/wreduce.cc b/passes/opt/wreduce.cc index 8ce2fd478..78e2bcbea 100644 --- a/passes/opt/wreduce.cc +++ b/passes/opt/wreduce.cc @@ -39,7 +39,8 @@ struct WreduceConfig ID($lt), ID($le), ID($eq), ID($ne), ID($eqx), ID($nex), ID($ge), ID($gt), ID($add), ID($sub), ID($mul), // ID($div), ID($mod), ID($divfloor), ID($modfloor), ID($pow), ID($mux), ID($pmux), - ID($dff), ID($adff) + ID($dff), ID($dffe), ID($adff), ID($adffe), ID($sdff), ID($sdffe), ID($sdffce), + ID($dlatch), ID($adlatch), }); } }; @@ -143,8 +144,8 @@ struct WreduceWorker SigSpec sig_d = mi.sigmap(cell->getPort(ID::D)); SigSpec sig_q = mi.sigmap(cell->getPort(ID::Q)); - bool is_adff = (cell->type == ID($adff)); - Const initval, arst_value; + bool has_reset = false; + Const initval, rst_value; int width_before = GetSize(sig_q); @@ -152,7 +153,11 @@ struct WreduceWorker return; if (cell->parameters.count(ID::ARST_VALUE)) { - arst_value = cell->parameters[ID::ARST_VALUE]; + rst_value = cell->parameters[ID::ARST_VALUE]; + has_reset = true; + } else if (cell->parameters.count(ID::SRST_VALUE)) { + rst_value = cell->parameters[ID::SRST_VALUE]; + has_reset = true; } bool zero_ext = sig_d[GetSize(sig_d)-1] == State::S0; @@ -169,7 +174,7 @@ struct WreduceWorker for (int i = GetSize(sig_q)-1; i >= 0; i--) { if (zero_ext && sig_d[i] == State::S0 && (initval[i] == State::S0 || initval[i] == State::Sx) && - (!is_adff || i >= GetSize(arst_value) || arst_value[i] == State::S0 || arst_value[i] == State::Sx)) { + (!has_reset || i >= GetSize(rst_value) || rst_value[i] == State::S0 || rst_value[i] == State::Sx)) { module->connect(sig_q[i], State::S0); remove_init_bits.insert(sig_q[i]); sig_d.remove(i); @@ -178,7 +183,7 @@ struct WreduceWorker } if (sign_ext && i > 0 && sig_d[i] == sig_d[i-1] && initval[i] == initval[i-1] && - (!is_adff || i >= GetSize(arst_value) || arst_value[i] == arst_value[i-1])) { + (!has_reset || i >= GetSize(rst_value) || rst_value[i] == rst_value[i-1])) { module->connect(sig_q[i], sig_q[i-1]); remove_init_bits.insert(sig_q[i]); sig_d.remove(i); @@ -221,8 +226,11 @@ struct WreduceWorker // Narrow ARST_VALUE parameter to new size. if (cell->parameters.count(ID::ARST_VALUE)) { - arst_value.bits.resize(GetSize(sig_q)); - cell->setParam(ID::ARST_VALUE, arst_value); + rst_value.bits.resize(GetSize(sig_q)); + cell->setParam(ID::ARST_VALUE, rst_value); + } else if (cell->parameters.count(ID::SRST_VALUE)) { + rst_value.bits.resize(GetSize(sig_q)); + cell->setParam(ID::SRST_VALUE, rst_value); } cell->setPort(ID::D, sig_d); @@ -272,7 +280,7 @@ struct WreduceWorker if (cell->type.in(ID($mux), ID($pmux))) return run_cell_mux(cell); - if (cell->type.in(ID($dff), ID($adff))) + if (cell->type.in(ID($dff), ID($dffe), ID($adff), ID($adffe), ID($sdff), ID($sdffe), ID($sdffce), ID($dlatch), ID($adlatch))) return run_cell_dff(cell); SigSpec sig = mi.sigmap(cell->getPort(ID::Y)); |