[Bug tree-optimization/52286] [4.6 Regression] wrong code bug

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52286

--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-02-23 18:20:26 UTC ---
Author: jakub
Date: Thu Feb 23 18:20:19 2012
New Revision: 184520

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=184520
Log:
    Backported from trunk
    2012-02-20  Georg-Johann Lay  <avr@gjlay.de>

    * gcc.c-torture/execute/pr52286.c: Fix FAIL on 16-bit int platforms.

    2012-02-20  Jakub Jelinek  <jakub@redhat.com>

    PR tree-optimization/52286
    * fold-const.c (fold_binary_loc): For (X & C1) | C2
    optimization use double_int_to_tree instead of build_int_cst_wide,
    rewrite to use double_int vars.

    * gcc.c-torture/execute/pr52286.c: New test.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.c-torture/execute/pr52286.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/fold-const.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog