[Bug target/106355] Linux s390x -O2 argument passing miscompile

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106355

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Stefan Schulze Frielinghaus
<stefansf@gcc.gnu.org>:

https://gcc.gnu.org/g:cb994acc08b67f26a54e7c5dc1f4995a2ce24d98

commit r13-3377-gcb994acc08b67f26a54e7c5dc1f4995a2ce24d98
Author: Stefan Schulze Frielinghaus <stefansf@linux.ibm.com>
Date:   Wed Oct 19 14:28:22 2022 +0200

    IBM zSystems: Fix function_ok_for_sibcall [PR106355]

    For a parameter with BLKmode we cannot use REG_NREGS in order to
    determine the number of consecutive registers.  Streamlined this with
    the implementation of s390_function_arg.

    Fix some indentation whitespace, too.

    gcc/ChangeLog:

            PR target/106355
            * config/s390/s390.cc (s390_call_saved_register_used): For a
            parameter with BLKmode fix determining number of consecutive
            registers.

    gcc/testsuite/ChangeLog:

            * gcc.target/s390/pr106355.h: Common code for new tests.
            * gcc.target/s390/pr106355-1.c: New test.
            * gcc.target/s390/pr106355-2.c: New test.
            * gcc.target/s390/pr106355-3.c: New test.