[Bug tree-optimization/71408] [7 Regression] wrong code at -Os and above on x86_64-linux-gnu

[kugan at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71408

--- Comment #5 from kugan at gcc dot gnu.org ---
Author: kugan
Date: Mon Jun  6 23:46:11 2016
New Revision: 237158

URL: https://gcc.gnu.org/viewcvs?rev=237158&root=gcc&view=rev
Log:
gcc/ChangeLog:

2016-06-07  Kugan Vivekanandarajah  <kug...@linaro.org>

        PR middle-end/71408
        * tree-ssa-reassoc.c (zero_one_operation): Fix NEGATE_EXPR operand for
        propagate_op_to_single_use.


gcc/testsuite/ChangeLog:

2016-06-07  Kugan Vivekanandarajah  <kug...@linaro.org>

        PR middle-end/71408
        * gcc.dg/tree-ssa/pr71408.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/tree-ssa/pr71408.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-reassoc.c