[Bug tree-optimization/68835] [5 Regression] ICE in set_value_range, at tree-vrp.c:387, with __int128 bit field

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68835

--- Comment #13 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Fri Dec 18 14:38:17 2015
New Revision: 231817

URL: https://gcc.gnu.org/viewcvs?rev=231817&root=gcc&view=rev
Log:
        Backported from mainline
        2015-12-17  Jakub Jelinek  <jakub@redhat.com>

        PR tree-optimization/68835
        * tree.c (get_int_cst_ext_nunits): Return
        cst.get_precision () / HOST_BITS_PER_WIDE_INT + 1
        for all unsigned wi::neg_p (cst) constants.
        (build_new_int_cst): If cst.get_precision is not a multiple
        of HOST_BITS_PER_WIDE_INT, zero extend -1 to the precision
        % HOST_BITS_PER_WIDE_INT.

        * gcc.dg/pr68835-1.c: New test.
        * gcc.dg/pr68835-2.c: New test.

Added:
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/pr68835-1.c
    branches/gcc-5-branch/gcc/testsuite/gcc.dg/pr68835-2.c
Modified:
    branches/gcc-5-branch/gcc/ChangeLog
    branches/gcc-5-branch/gcc/testsuite/ChangeLog
    branches/gcc-5-branch/gcc/tree.c