[Bug target/90568] stack protector should use cmp or sub, not xor, to allow macro-fusion on x86

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90568

--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Thu May 23 11:18:41 2019
New Revision: 271552

URL: https://gcc.gnu.org/viewcvs?rev=271552&root=gcc&view=rev
Log:
        PR target/90568
        * config/i386/i386.md (stack_protect_test_<mode>): Use sub instead
        of xor.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md