[Bug target/78807] Loop optimization trigger bus error

[mikpelinux at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78807

--- Comment #4 from Mikael Pettersson <mikpelinux at gmail dot com> ---
On Solaris 10 / SPARC, this test case works fine when compiled by gcc-6.3.0,
but SIGBUSes when compiled by gcc-5.4.0.