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Fix and_or_buffer optimization in opt_expr for signed operators

This commit is contained in:
Clifford Wolf 2017-07-01 16:05:26 +02:00
parent 7d2fb6e2fc
commit 0a02cdb93b
1 changed files with 2 additions and 2 deletions
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4
passes/opt/opt_expr.cc
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@ -371,13 +371,13 @@ void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bool cons
if (cell->type.in("$reduce_and", "$_AND_"))
detect_const_and = true;
if (cell->type.in("$and", "$logic_and") && GetSize(cell->getPort("\\A")) == 1 && GetSize(cell->getPort("\\B")) == 1)
if (cell->type.in("$and", "$logic_and") && GetSize(cell->getPort("\\A")) == 1 && GetSize(cell->getPort("\\B")) == 1 && !cell->getParam("\\A_SIGNED").as_bool())
detect_const_and = true;
if (cell->type.in("$reduce_or", "$reduce_bool", "$_OR_"))
detect_const_or = true;
if (cell->type.in("$or", "$logic_or") && GetSize(cell->getPort("\\A")) == 1 && GetSize(cell->getPort("\\B")) == 1)
if (cell->type.in("$or", "$logic_or") && GetSize(cell->getPort("\\A")) == 1 && GetSize(cell->getPort("\\B")) == 1 && !cell->getParam("\\A_SIGNED").as_bool())
detect_const_or = true;
if (detect_const_and || detect_const_or)