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Merge pull request #4931 from povik/buf-clean

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opt_clean, simplemap: Add `$buf` handling
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Martin Povišer 2025-03-10 15:10:17 +01:00 • committed by GitHub
commit d8a4991289
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4 changed files with 24 additions and 2 deletions
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2
passes/opt/opt_clean.cc
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@ -601,7 +601,7 @@ void rmunused_module(RTLIL::Module *module, bool purge_mode, bool verbose, bool
std::vector<RTLIL::Cell*> delcells;
for (auto cell : module->cells())
if (cell->type.in(ID($pos), ID($_BUF_)) && !cell->has_keep_attr()) {
if (cell->type.in(ID($pos), ID($_BUF_), ID($buf)) && !cell->has_keep_attr()) {
bool is_signed = cell->type == ID($pos) && cell->getParam(ID::A_SIGNED).as_bool();
RTLIL::SigSpec a = cell->getPort(ID::A);
RTLIL::SigSpec y = cell->getPort(ID::Y);

9
passes/techmap/simplemap.cc
View file

@ -42,6 +42,14 @@ void simplemap_not(RTLIL::Module *module, RTLIL::Cell *cell)
}
}
void simplemap_buf(RTLIL::Module *module, RTLIL::Cell *cell)
{
RTLIL::SigSpec sig_a = cell->getPort(ID::A);
RTLIL::SigSpec sig_y = cell->getPort(ID::Y);
module->connect(RTLIL::SigSig(sig_y, sig_a));
}
void simplemap_pos(RTLIL::Module *module, RTLIL::Cell *cell)
{
RTLIL::SigSpec sig_a = cell->getPort(ID::A);
@ -411,6 +419,7 @@ void simplemap_get_mappers(dict<IdString, void(*)(RTLIL::Module*, RTLIL::Cell*)>
{
mappers[ID($not)] = simplemap_not;
mappers[ID($pos)] = simplemap_pos;
mappers[ID($buf)] = simplemap_buf;
mappers[ID($and)] = simplemap_bitop;
mappers[ID($or)] = simplemap_bitop;
mappers[ID($xor)] = simplemap_bitop;