[Bug tree-optimization/30911] VRP fails to eliminate range checks in Ada code

[Arnaud Charlet]

> > we have a disconnect between the redundant checks in the rts and the
> > testcases.  If it happens that the non-bootstrapped rts is built by the
> > host compiler(?).
> 
> No, that never happens. The rts is always built with the latest (stage3)
> compiler. Otherwise it would not even begin to work fro cross compilers.

Note that I'm talking about ada/rts, which gets installed under adainclude
and adalib, and used by Ada apps. That's the target run-time.

Maybe you are talking about the part of the Ada run-time which is used by
the compiler itself, in which case, it's considered as a source of the
compiler, and treated as such (built successively by all compilers from
bootstrap compiler to stage2 compiler).

Arno