Commit Graph

12 Commits

Author SHA1 Message Date
Marcin Kościelnicki f68985f997 deminout: prevent any constant assignment from demoting to input
Before this patch,

```
module top(inout io);
assign io = 1'bx;
endmodule
```

would have the `io` pin demoted to input (same happens for `1'bz`,
but not for `1'b0` or `1'b1`), resulting in check failures later on.

Part of fix for #1841.
2020-03-30 15:04:31 +02:00
David Shah 5cae9c6e16 deminout: Don't demote inouts with unused bits
Signed-off-by: David Shah <dave@ds0.me>
2020-03-04 18:44:38 +00:00
Eddie Hung 52355f5185 Use more ID::{A,B,Y,blackbox,whitebox} 2019-08-15 14:50:10 -07:00
Eddie Hung 02dead2e60 ID(\\.*) -> ID(.*) 2019-08-15 10:25:54 -07:00
Eddie Hung 78ba8b8574 Transform all "\\*" identifiers into ID() 2019-08-15 10:19:29 -07:00
Eddie Hung 9f98241010 Transform "$.*" to ID("$.*") in passes/techmap 2019-08-15 10:05:08 -07:00
Eddie Hung 3486235338 Make liberal use of IdString.in() 2019-08-06 16:18:18 -07:00
David Shah 4c59447168 deminout: Consider $tribuf cells
Signed-off-by: David Shah <dave@ds0.me>
2018-12-12 17:17:40 +00:00
David Shah d3fe9465f3 deminout: Don't demote constant-driven inouts to inputs
Signed-off-by: David Shah <dave@ds0.me>
2018-12-12 16:50:46 +00:00
Henner Zeller 3aa4484a3c Consistent use of 'override' for virtual methods in derived classes.
o Not all derived methods were marked 'override', but it is a great
  feature of C++11 that we should make use of.
o While at it: touched header files got a -*- c++ -*- for emacs to
  provide support for that language.
o use YS_OVERRIDE for all override keywords (though we should probably
  use the plain keyword going forward now that C++11 is established)
2018-07-20 23:51:06 -07:00
Clifford Wolf 675a44b41a Be slightly less aggressive in "deminout" pass
Signed-off-by: Clifford Wolf <clifford@clifford.at>
2018-06-19 14:29:38 +02:00
Clifford Wolf ca91bccb6b Added "deminout" 2016-06-19 13:08:16 +02:00