[Bug tree-optimization/69355] [5/6 Regression] Wrong results with -O1 optimization

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69355

--- Comment #17 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Jan 21 07:59:32 2016
New Revision: 232663

URL: https://gcc.gnu.org/viewcvs?rev=232663&root=gcc&view=rev
Log:
        PR c++/69355
        * tree-dfa.c (get_ref_base_and_extent): Use GET_MODE_BITSIZE (mode)
        for bitsize instead of GET_MODE_PRECISION (mode).

        * g++.dg/torture/pr69355.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr69355.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-dfa.c