[Bug target/88809] do not use rep-scasb for inline strlen/memchr

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88809

--- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> ---
Author: marxin
Date: Thu May  2 07:57:38 2019
New Revision: 270787

URL: https://gcc.gnu.org/viewcvs?rev=270787&root=gcc&view=rev
Log:
Prefer to use strlen call instead of inline expansion (PR target/88809).

2019-05-02  Martin Liska  <mli...@suse.cz>

        PR target/88809
        * config/i386/i386.c (ix86_expand_strlen): Use strlen call.
        With -minline-all-stringops use inline expansion using 4B loop.
        * doc/invoke.texi: Document the change of
        -minline-all-stringops.
2019-05-02  Martin Liska  <mli...@suse.cz>

        PR target/88809
        * gcc.target/i386/pr88809.c: New test.
        * gcc.target/i386/pr88809-2.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/i386/pr88809-2.c
    trunk/gcc/testsuite/gcc.target/i386/pr88809.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/i386/i386.c
    trunk/gcc/doc/invoke.texi
    trunk/gcc/testsuite/ChangeLog