[Bug rtl-optimization/85180] Infinite loop in RTL DSE optimizer

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180

--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Fri Apr  6 08:30:52 2018
New Revision: 259166

URL: https://gcc.gnu.org/viewcvs?rev=259166&root=gcc&view=rev
Log:
2018-04-06  Richard Biener  <rguent...@suse.de>

        PR middle-end/85180
        * alias.c (find_base_term): New wrapper around find_base_term
        unwinding CSELIB_VAL_PTR changes.
        (find_base_term): Do not restore CSELIB_VAL_PTR during the
        recursion.

        * gcc.dg/pr85180.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr85180.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/alias.c
    trunk/gcc/testsuite/ChangeLog