[Bug target/81906] [7/8 Regression] Calls to rint() wrongly optimized away starting in g++ 6

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81906

--- Comment #14 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu Dec  7 23:56:34 2017
New Revision: 255486

URL: https://gcc.gnu.org/viewcvs?rev=255486&root=gcc&view=rev
Log:
        PR target/81906
        * config/i386/i386.c (ix86_expand_rint): Handle flag_rounding_math.

        * gcc.target/i386/pr81906.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr81906.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog