[Bug target/120908] *tls_(local|global)_dynamic_64_ has an implicit RDI clobber

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120908

--- Comment #8 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-15 branch has been updated by H.J. Lu <h...@gcc.gnu.org>:

https://gcc.gnu.org/g:fcc6ce1a4934a45bfd4e8e21e118d3f1046d3d85

commit r15-9967-gfcc6ce1a4934a45bfd4e8e21e118d3f1046d3d85
Author: H.J. Lu <hjl.to...@gmail.com>
Date:   Thu Jul 3 10:54:39 2025 +0800

    x86-64: Add RDI clobber to 64-bit dynamic TLS patterns

    *tls_global_dynamic_64_largepic, *tls_local_dynamic_64_<mode> and
    *tls_local_dynamic_base_64_largepic use RDI as the __tls_get_addr
    argument.  Add RDI clobber to these patterns to show it.

    gcc/

            PR target/120908
            * config/i386/i386.cc (legitimize_tls_address): Pass RDI to
            gen_tls_local_dynamic_64.
            * config/i386/i386.md (*tls_global_dynamic_64_largepic): Add
            RDI clobber and use it to generate LEA.
            (*tls_local_dynamic_64_<mode>): Likewise.
            (*tls_local_dynamic_base_64_largepic): Likewise.
            (@tls_local_dynamic_64_<mode>): Add a clobber.

    gcc/testsuite/

            PR target/120908
            * gcc.target/i386/pr120908.c: New test.

    Signed-off-by: H.J. Lu <hjl.to...@gmail.com>
    (cherry picked from commit d8d5e2a8031e74f08f61ccdd727476f97940c5a6)