[Bug middle-end/86627] [6/7/8/9 Regression] Signed 128-bit division by 2 no longer expanded to RTL

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86627

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Jul 24 14:23:18 2018
New Revision: 262948

URL: https://gcc.gnu.org/viewcvs?rev=262948&root=gcc&view=rev
Log:
        PR middle-end/86627
        * expmed.c (expand_divmod): Punt if d == HOST_WIDE_INT_MIN
        and size > HOST_BITS_PER_WIDE_INT.  For size > HOST_BITS_PER_WIDE_INT
        and abs_d == d, do the power of two handling if profitable.

        * gcc.target/i386/pr86627.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr86627.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expmed.c
    trunk/gcc/testsuite/ChangeLog