[Bug tree-optimization/97360] [11 Regression] ICE in range_on_exit

[rguenther at suse dot de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97360

--- Comment #16 from rguenther at suse dot de <rguenther at suse dot de> ---
On Fri, 16 Oct 2020, amacleod at redhat dot com wrote:

> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97360
> 
> --- Comment #15 from Andrew Macleod <amacleod at redhat dot com> ---
> Well it seems far more incorrect that types_compatible_p () is FALSE for a type
> and its MIN/MAX value?

But then this (types_compatible_p () is FALSE) is not going to be fixed
by the patch - or at least the type that was copied retains the issue.
So it's certainly the wrong place to fix.

Note that for integer subtypes generated by Ada the min/max values
are in the "parent" type.  Usually the types are compatible though
(same precision and signedness).