[Bug target/104894] [11/12 Regression] ICE with -fno-plt -mcpu=power10 on PowerPC64 LE Linux

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104894

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Peter Bergner
<bergner@gcc.gnu.org>:

https://gcc.gnu.org/g:5ede37c0f274f0de19afd662588891e32b60f705

commit r11-9836-g5ede37c0f274f0de19afd662588891e32b60f705
Author: Peter Bergner <bergner@linux.ibm.com>
Date:   Tue Apr 12 14:08:53 2022 -0500

    rs6000: Handle pcrel sibcalls to longcall functions [PR104894]

    Before PCREL in POWER10, we were not allowed to perform sibcalls to
longcall
    functions since callee's return would skip the TOC restore in the caller.
    However, with PCREL we can now safely perform a sibling call to longcall
    functions.  The problem with the current code is that pcrel sibcall
    branches to a PLT stub label even though -fno-plt was used.  The solution
    here is to check for a pcrel longcall and emit an inline plt stub in
    that case.

    2022-04-11  Peter Bergner  <bergner@linux.ibm.com>

    gcc/
            PR target/104894
            * config/rs6000/rs6000.c (rs6000_sibcall_aix): Handle pcrel
sibcalls
            to longcall functions.

    gcc/testsuite/
            PR target/104894
            * gcc.target/powerpc/pr104894.c: New test.
            * gcc.target/powerpc/pr104894-2.c: New test.

    (cherry picked from commit d74c4c6a1b4956b5cd9b2a770bb7261836fa1289)