diff options
Diffstat (limited to 'passes/memory/memory_dff.cc')
| -rw-r--r-- | passes/memory/memory_dff.cc | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/passes/memory/memory_dff.cc b/passes/memory/memory_dff.cc index 55ff8579..6ba9bf23 100644 --- a/passes/memory/memory_dff.cc +++ b/passes/memory/memory_dff.cc @@ -31,7 +31,6 @@ static void normalize_sig(RTLIL::Module *module, RTLIL::SigSpec &sig) static bool find_sig_before_dff(RTLIL::Module *module, RTLIL::SigSpec &sig, RTLIL::SigSpec &clk, bool &clk_polarity, bool after = false) { - bool replaced_bits = false; normalize_sig(module, sig); sig.expand(); @@ -67,7 +66,6 @@ static bool find_sig_before_dff(RTLIL::Module *module, RTLIL::SigSpec &sig, RTLI chunk = d.chunks[0]; clk = cell->connections["\\CLK"]; clk_polarity = cell->parameters["\\CLK_POLARITY"].as_bool(); - replaced_bits = true; goto replaced_this_bit; } @@ -76,7 +74,7 @@ static bool find_sig_before_dff(RTLIL::Module *module, RTLIL::SigSpec &sig, RTLI } sig.optimize(); - return replaced_bits; + return true; } static void handle_wr_cell(RTLIL::Module *module, RTLIL::Cell *cell) @@ -104,13 +102,15 @@ static void handle_wr_cell(RTLIL::Module *module, RTLIL::Cell *cell) return; } - cell->connections["\\CLK"] = clk; - cell->connections["\\ADDR"] = sig_addr; - cell->connections["\\DATA"] = sig_data; - cell->connections["\\EN"] = sig_en; - cell->parameters["\\CLK_ENABLE"] = RTLIL::Const(1); - cell->parameters["\\CLK_POLARITY"] = RTLIL::Const(clk_polarity); - log("merged $dff to cell.\n"); + if (clk != RTLIL::SigSpec(RTLIL::State::Sx)) { + cell->connections["\\CLK"] = clk; + cell->connections["\\ADDR"] = sig_addr; + cell->connections["\\DATA"] = sig_data; + cell->connections["\\EN"] = sig_en; + cell->parameters["\\CLK_ENABLE"] = RTLIL::Const(1); + cell->parameters["\\CLK_POLARITY"] = RTLIL::Const(clk_polarity); + log("merged $dff to cell.\n"); + } } #if 1 |