yosys

Commit Graph

Author	SHA1	Message	Date
Miodrag Milanovic	48a3dcc02a	End of file fix	2026-06-23 07:23:41 +02:00
Krystine Sherwin	406b400458	opt_expr: Fix #4590 If all the (non-select) inputs of a `$_MUX{4,8,16}_` are undefined, replace it, just like we do for `$mux` and `$_MUX_`. Add `tests/opt/opt_expr_mux_undef.ys` to verify this. This doesn't do any const folding on the wide muxes, or shrinking to less wide muxes. It only handles the case where all inputs are 'x and the mux can be completely removed.	2025-04-04 12:25:31 +13:00

Author

SHA1

Message

Date

Miodrag Milanovic

48a3dcc02a

End of file fix

2026-06-23 07:23:41 +02:00

Krystine Sherwin

406b400458

opt_expr: Fix #4590

If all the (non-select) inputs of a `$_MUX{4,8,16}_` are undefined, replace it, just like we do for `$mux` and `$_MUX_`.
Add `tests/opt/opt_expr_mux_undef.ys` to verify this.

This doesn't do any const folding on the wide muxes, or shrinking to less wide muxes.  It only handles the case where all inputs are 'x and the mux can be completely removed.

2025-04-04 12:25:31 +13:00

2 Commits