diff options
Diffstat (limited to 'passes')
| -rw-r--r-- | passes/cmds/setundef.cc | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/passes/cmds/setundef.cc b/passes/cmds/setundef.cc index 9827ac0b1..389c3790e 100644 --- a/passes/cmds/setundef.cc +++ b/passes/cmds/setundef.cc @@ -40,6 +40,9 @@ struct SetundefWorker if (next_bit_mode == 1) return RTLIL::State::S1; + if (next_bit_mode == 4) + return RTLIL::State::Sx; + // xorshift32 next_bit_state ^= next_bit_state << 13; next_bit_state ^= next_bit_state >> 17; @@ -81,6 +84,9 @@ struct SetundefPass : public Pass { log(" -one\n"); log(" replace with bits set (1)\n"); log("\n"); + log(" -undef\n"); + log(" replace with undef (x) bits, may be used with -undriven\n"); + log("\n"); log(" -anyseq\n"); log(" replace with $anyseq drivers (for formal)\n"); log("\n"); @@ -123,6 +129,11 @@ struct SetundefPass : public Pass { worker.next_bit_mode = 2; continue; } + if (args[argidx] == "-undef") { + got_value = true; + worker.next_bit_mode = 4; + continue; + } if (args[argidx] == "-init") { init_mode = true; continue; |