[Bug middle-end/78684] [7 Regression] ICE in create_intersect_range_checks_index, at tree-vect-loop-manip.c:2074

[amker at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78684

--- Comment #9 from amker at gcc dot gnu.org ---
Author: amker
Date: Thu Dec  8 10:56:41 2016
New Revision: 243431

URL: https://gcc.gnu.org/viewcvs?rev=243431&root=gcc&view=rev
Log:
        PR middle-end/78684
        * tree-vect-loop-manip.c (create_intersect_range_checks_index): Check
        sign bit for index step of data reference.
        gcc/testsuite
        PR middle-end/78684
        * g++.dg/torture/pr78684.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr78684.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-loop-manip.c