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

uros at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Wed Apr 29 20:59:00 GMT 2015


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

--- Comment #6 from uros at gcc dot gnu.org ---
Author: uros
Date: Wed Apr 29 20:58:25 2015
New Revision: 222592

URL: https://gcc.gnu.org/viewcvs?rev=222592&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.
        (setcc+movzbl peephole2): Check also clobbered reg.
        (setcc+andl peephole2): Ditto.


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



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