[Bug tree-optimization/71433] [7 Regression] -Warray-bounds false positive with -O2

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71433

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Tue Jan 17 08:38:59 2017
New Revision: 244520

URL: https://gcc.gnu.org/viewcvs?rev=244520&root=gcc&view=rev
Log:
2017-01-17  Richard Biener  <rguenther@suse.de>

        PR tree-optimization/71433
        * tree-vrp.c (register_new_assert_for): Merge same asserts
        on all incoming edges.
        (process_assert_insertions_for): Handle insertions at the
        beginning of BBs.

        * gcc.dg/Warray-bounds-20.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/Warray-bounds-20.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vrp.c