[Bug target/65871] bzhi builtin/intrinsic wrongly assumes bzhi instruction doesn't set the ZF flag

[uros at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65871

--- Comment #5 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Apr 29 18:53:19 2015
New Revision: 222588

URL: https://gcc.gnu.org/viewcvs?rev=222588&root=gcc&view=rev
Log:
        PR target/65871
        * config/i386/i386.md (*bmi_bextr_<mode>_cczonly): New pattern.
        (*bmi2_bzhi_<mode>3_1_cczonly): Ditto.

testsuite/ChangeLog:

        PR target/65871
        * gcc.target/i386/pr65871-1.c: New test
        * gcc.target/i386/pr65871-2.c: Ditto.


Added:
    trunk/gcc/testsuite/gcc.target/i386/pr65871-1.c
    trunk/gcc/testsuite/gcc.target/i386/pr65871-2.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.md
    trunk/gcc/testsuite/ChangeLog