[Bug middle-end/85974] [8 Regression] Failure to optimize difference of two pointers into a compile time constant

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85974

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Jul 13 11:25:38 2018
New Revision: 262632

URL: https://gcc.gnu.org/viewcvs?rev=262632&root=gcc&view=rev
Log:
2018-07-13  Richard Biener  <rguenther@suse.de>

        PR middle-end/85974
        * match.pd (addr1 - addr2): Allow either of the operand to
        have a conversion.

        * gcc.c-torture/compile/930326-1.c: Adjust to cover widening.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/match.pd
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.c-torture/compile/930326-1.c