[PATCH 0/2] PR77822

[Dominik Vogt]

The following two patches fix PR 77822 on s390x for gcc-7.  As the
macro doing the argument range checks can be used on other targets
as well, I've put it in system.h (couldn't think of a better
place; maybe rtl.h?).

Bootstrapped on s390x biarch, regression tested on s390x biarch
and s390, all on a zEC12 with -march=zEC12.

Please check the commit messages for details.

Ciao

Dominik ^_^  ^_^

-- 

Dominik Vogt
IBM Germany