> Umm, did you look at ssa_name_has_boolean_range? Isn't the problem that > Ada's BOOLEAN_TYPE has a wider range than [0..1] and thus this is the > wrong bit of code: > > /* Boolean types always have a range [0..1]. */ > if (TREE_CODE (TREE_TYPE (op)) == BOOLEAN_TYPE) > return true;
You seem to be discovering that boolean types can have a precision > 1; that's the case in Ada and Fortran. They are indeed a bit delicate to handle but the invariant is that the 0-or-1 value must be preserved for them too, i.e. you cannot create another value out of thin air. > IIRC there are other places that have similar logic and rely on > ssa_name_has_boolean_range to filter out anything undesirable. The other places are more careful, i.e. they explicitly test for 0 or 1. -- Eric Botcazou
