[Bug tree-optimization/79824] [7 Regression] Failure to peel for gaps leads to read beyond mapped memory

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79824

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Mar  6 13:58:01 2017
New Revision: 245922

URL: https://gcc.gnu.org/viewcvs?rev=245922&root=gcc&view=rev
Log:
2017-03-06  Richard Biener  <rguent...@suse.de>

        PR tree-optimization/79824
        * tree-vect-stmts.c (get_group_load_store_type): Fix alignment
        check disabling peeling for gaps.

        * gcc.dg/vect/pr79824-1.c: New testcase.
        * gcc.dg/vect/pr79824-2.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.dg/vect/pr79824-1.c
    trunk/gcc/testsuite/gcc.dg/vect/pr79824-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-stmts.c