[Bug tree-optimization/84650] [8 Regression] [graphite] ICE: Segmentation fault (in create_new_iv)

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84650

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar  5 12:49:07 2018
New Revision: 258242

URL: https://gcc.gnu.org/viewcvs?rev=258242&root=gcc&view=rev
Log:
2018-03-05  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/84650
        * tree-ssa-loop-im.c (pass_lim::execute): Reset the SCEV cache
        if executed in the loop pipeline.

        * gcc.dg/graphite/pr84650.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/graphite/pr84650.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-loop-im.c