[Bug target/95347] rs6000 mcpu=future generating stfs instead of pstfs for pc-relative references

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95347

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-10 branch has been updated by Aaron Sawdey
<acsawdey@gcc.gnu.org>:

https://gcc.gnu.org/g:541e8c4dac11fce933a7f9fa7d865abf8d6496f7

commit r10-8324-g541e8c4dac11fce933a7f9fa7d865abf8d6496f7
Author: Aaron Sawdey <acsawdey@linux.ibm.com>
Date:   Wed Jun 17 15:32:53 2020 -0500

    Correctly identify stfs if prefixed

    Because reg_to_non_prefixed() only looks at the register being used, it
    doesn't get the right answer for stfs, which leads to us not seeing
    that it has a PCREL symbol ref.  This patch works around this by
    introducing a helper function that inspects the insn to see if it is in
    fact a stfs. Then if we use NON_PREFIXED_DEFAULT, address_to_insn_form()
    can see that it has the PCREL symbol ref.

            Backport from master
            2020-06-02  Aaron Sawdey  <acsawdey@linux.ibm.com>

            PR target/95347
            * config/rs6000/rs6000.c (prefixed_store_p): Add special case
            for stfs.
            (is_stfs_insn): New helper function.