It's ascending chain, not monotonicity.
Remove pointless const from function declarations.
Use the default constlike case for coloring all constlike nodes.

The removed special case used the same color anyway.
Provide a minus_one value for mode_b, too.

Now mode_b behaves the same as integer modes, so use the same code to initialize the special values.
Cleanup.
Add missing initialization of all_one for irms_auxiliary and irms_data.
Add and use foreach_irn_pred{,_r}().
Plug memory leak in clone_phis_sans_bes().
Added a transfer function for Mux nodes.

This fixes opt/combo8.c.
Rename variable.