Ilya Leoshkevich wrote:
> gcc/ChangeLog:
>
> 2018-09-19 Ilya Leoshkevich
>
> PR target/80080
> * config/s390/s390.c (s390_emit_epilogue): Do not use PARALLEL
> RETURN+USE when returning via %r14.
>
> gcc/testsuite/ChangeLog:
>
> 2018-09-19 Ilya Leoshkevich
>
> PR
S/390 epilogue ends with (parallel [(return) (use %r14)]) instead of
the more usual (return) or (simple_return). This sequence is not
recognized by the conditional return logic in try_optimize_cfg ().
This was introduced for processors older than z196, where it is
sometimes profitable to use call
