[Bug tree-optimization/87087] [8 Regression] Optimization hangs up and consumes over 15Gb of memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87087

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Thu Oct 18 08:40:54 2018
New Revision: 265261

URL: https://gcc.gnu.org/viewcvs?rev=265261&root=gcc&view=rev
Log:
2018-10-18  Richard Biener  <rguent...@suse.de>

        PR middle-end/87087
        Revert
        2018-02-07  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/84204
        * tree-chrec.c (chrec_fold_plus_1): Remove size limiting in
        this place.

        * gcc.dg/torture/pr87087.c: New testcase.
        * gcc.dg/graphite/pr84204.c: XFAIL.
        * gcc.dg/graphite/pr85935.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr87087.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/graphite/pr84204.c
    trunk/gcc/testsuite/gcc.dg/graphite/pr85935.c
    trunk/gcc/tree-chrec.c