PATCH to fix -Wrestrict ICE (PR middle-end/83463)

[Jeff Law]

On 12/18/2017 08:10 AM, Marek Polacek wrote:
> I'm not entirely up to speed with this code, but this one seemed sufficiently
> obvious: check INTEGRAL_TYPE_P before looking at a tree's min/max value.
> Otherwise, go with maxobjsize.
> 
> Bootstrapped/regtested on x86_64-linux, ok for trunk?
> 
> 2017-12-18  Marek Polacek  <polacek@redhat.com>
> 
> 	PR middle-end/83463
> 	* gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref):
> 	Check if TYPE is INTEGRAL_TYPE_P before accessing its min/max
> 	values.
> 
> 	* gcc.dg/pr83463.c: New test.
OK.
jeff