[Bug target/52451] gcc w/i387 float generates fucom rather than fcom for floating point comparsons

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=52451

--- Comment #5 from uros at gcc dot gnu.org ---
Author: uros
Date: Sun Oct 22 19:04:36 2017
New Revision: 253986

URL: https://gcc.gnu.org/viewcvs?rev=253986&root=gcc&view=rev
Log:
        PR target/52451
        * config/i386/i386.c (ix86_fp_compare_mode): Return CCFPmode
        for ordered inequality comparisons even with TARGET_IEEE_FP.

testsuite/ChangeLog:

        PR target/52451
        * gcc.dg/torture/pr52451.c: New test.


Added:
    trunk/gcc/testsuite/gcc.dg/torture/pr52451.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/testsuite/ChangeLog