[Bug tree-optimization/68671] [5 Regression] gcc.dg/torture/pr66952.c FAILs with -fno-tree-dce

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68671

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Mon Dec  7 08:58:24 2015
New Revision: 231356

URL: https://gcc.gnu.org/viewcvs?rev=231356&root=gcc&view=rev
Log:
        Backported from mainline
        2015-12-04  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/68671
        * tree-ssa-reassoc.c (maybe_optimize_range_tests): For basic
        blocks starting with the successor of first bb we've modified
        and ending with last_bb call reset_flow_sensitive_info_in_bb.

        * gcc.dg/pr68671.c: New test.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/pr68671.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/testsuite/ChangeLog
    branches/gcc-5-branch/gcc/tree-ssa-reassoc.c