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Removed $bu0 cell type

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This commit is contained in:
Clifford Wolf 2014-09-04 02:07:52 +02:00
parent b9cb483f3e
commit 8927aa6148
18 changed files with 27 additions and 103 deletions
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10
passes/opt/opt_const.cc
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@ -181,7 +181,7 @@ static bool group_cell_inputs(RTLIL::Module *module, RTLIL::Cell *cell, bool com
log("\n");
}
cover_list("opt.opt_const.fine.group", "$not", "$pos", "$bu0", "$and", "$or", "$xor", "$xnor", cell->type.str());
cover_list("opt.opt_const.fine.group", "$not", "$pos", "$and", "$or", "$xor", "$xnor", cell->type.str());
module->remove(cell);
did_something = true;
@ -236,7 +236,7 @@ static void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bo
if (do_fine)
{
if (cell->type == "$not" || cell->type == "$pos" || cell->type == "$bu0" ||
if (cell->type == "$not" || cell->type == "$pos" ||
cell->type == "$and" || cell->type == "$or" || cell->type == "$xor" || cell->type == "$xnor")
if (group_cell_inputs(module, cell, true, cell->type != "$pos", assign_map))
goto next_cell;
@ -586,7 +586,6 @@ static void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bo
if (!keepdc)
{
bool identity_bu0 = false;
bool identity_wrt_a = false;
bool identity_wrt_b = false;
@ -607,7 +606,7 @@ static void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bo
RTLIL::SigSpec b = assign_map(cell->getPort("\\B"));
if (b.is_fully_const() && b.as_bool() == false)
identity_wrt_a = true, identity_bu0 = true;
identity_wrt_a = true;
}
if (cell->type == "$mul")
@ -646,7 +645,7 @@ static void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bo
cell->parameters.at("\\A_SIGNED") = cell->parameters.at("\\B_SIGNED");
}
cell->type = identity_bu0 ? "$bu0" : "$pos";
cell->type = "$pos";
cell->unsetPort("\\B");
cell->parameters.erase("\\B_WIDTH");
cell->parameters.erase("\\B_SIGNED");
@ -840,7 +839,6 @@ static void replace_const_cells(RTLIL::Design *design, RTLIL::Module *module, bo
FOLD_2ARG_CELL(pow)
FOLD_1ARG_CELL(pos)
FOLD_1ARG_CELL(bu0)
FOLD_1ARG_CELL(neg)
// be very conservative with optimizing $mux cells as we do not want to break mux trees