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Less aggressive "share" defaults

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This commit is contained in:
Clifford Wolf 2015-02-10 20:51:37 +01:00
parent 4f68a77e3f
commit 87819c62fa
1 changed files with 6 additions and 4 deletions
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10
passes/opt/share.cc
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@ -369,7 +369,9 @@ struct ShareWorker
} }
if (cell->type == "$memrd") { if (cell->type == "$memrd") {
if (!cell->parameters.at("\\CLK_ENABLE").as_bool()) if (cell->parameters.at("\\CLK_ENABLE").as_bool())
continue;
if (config.opt_aggressive || !modwalker.sigmap(cell->getPort("\\ADDR")).is_fully_const())
shareable_cells.insert(cell); shareable_cells.insert(cell);
continue; continue;
} }
@ -387,7 +389,7 @@ struct ShareWorker
} }
if (generic_ops.count(cell->type)) { if (generic_ops.count(cell->type)) {
if (config.opt_aggressive || cell->parameters.at("\\Y_WIDTH").as_int() >= 10) if (config.opt_aggressive)
shareable_cells.insert(cell); shareable_cells.insert(cell);
continue; continue;
} }
@ -1105,7 +1107,7 @@ struct ShareWorker
RTLIL::Cell *cell = *shareable_cells.begin(); RTLIL::Cell *cell = *shareable_cells.begin();
shareable_cells.erase(cell); shareable_cells.erase(cell);
log(" Analyzing resource sharing options for %s:\n", log_id(cell)); log(" Analyzing resource sharing options for %s (%s):\n", log_id(cell), log_id(cell->type));
const pool<ssc_pair_t> &cell_activation_patterns = find_cell_activation_patterns(cell, " "); const pool<ssc_pair_t> &cell_activation_patterns = find_cell_activation_patterns(cell, " ");
RTLIL::SigSpec cell_activation_signals = bits_from_activation_patterns(cell_activation_patterns); RTLIL::SigSpec cell_activation_signals = bits_from_activation_patterns(cell_activation_patterns);
@ -1138,7 +1140,7 @@ struct ShareWorker
for (auto other_cell : candidates) for (auto other_cell : candidates)
{ {
log(" Analyzing resource sharing with %s:\n", log_id(other_cell)); log(" Analyzing resource sharing with %s (%s):\n", log_id(other_cell), log_id(other_cell->type));
const pool<ssc_pair_t> &other_cell_activation_patterns = find_cell_activation_patterns(other_cell, " "); const pool<ssc_pair_t> &other_cell_activation_patterns = find_cell_activation_patterns(other_cell, " ");
RTLIL::SigSpec other_cell_activation_signals = bits_from_activation_patterns(other_cell_activation_patterns); RTLIL::SigSpec other_cell_activation_signals = bits_from_activation_patterns(other_cell_activation_patterns);