[Bug target/98688] [modules] does not work on PowerPC with opaque MMA types vector_pair/vector_quad

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98688

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Nathaniel Shead <nshead@gcc.gnu.org>:

https://gcc.gnu.org/g:4aa87b856067d4911de8fb66b3a27659dc75ca6d

commit r14-9439-g4aa87b856067d4911de8fb66b3a27659dc75ca6d
Author: Nathaniel Shead <nathanieloshead@gmail.com>
Date:   Sun Mar 10 22:06:18 2024 +1100

    c++: Support target-specific nodes when streaming modules [PR111224]

    Some targets make use of POLY_INT_CSTs and other custom builtin types,
    which currently violate some assumptions when streaming. This patch adds
    support for them, such as types like Aarch64 __fp16, PowerPC __ibm128,
    and vector types thereof.

    This patch doesn't provide "full" support of AArch64 SVE, however, since
    for that we would need to support 'target' nodes (tracked in PR108080).

    Adding the new builtin types means that on Aarch64 we now have 217
    global trees created on initialisation (up from 191), so this patch also
    slightly bumps the initial size of the fixed_trees allocation to 250.

            PR c++/98645
            PR c++/98688
            PR c++/111224

    gcc/cp/ChangeLog:

            * module.cc (enum tree_tag): Add new tag for builtin types.
            (trees_out::start): POLY_INT_CSTs can be emitted.
            (trees_in::start): Likewise.
            (trees_out::core_vals): Stream POLY_INT_CSTs.
            (trees_in::core_vals): Likewise.
            (trees_out::type_node): Handle vectors with multiple coeffs.
            (trees_in::tree_node): Likewise.
            (init_modules): Register target-specific builtin types. Bump
            initial capacity slightly.

    gcc/testsuite/ChangeLog:

            * g++.dg/modules/target-aarch64-1_a.C: New test.
            * g++.dg/modules/target-aarch64-1_b.C: New test.
            * g++.dg/modules/target-powerpc-1_a.C: New test.
            * g++.dg/modules/target-powerpc-1_b.C: New test.
            * g++.dg/modules/target-powerpc-2_a.C: New test.
            * g++.dg/modules/target-powerpc-2_b.C: New test.

    Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>
    Reviewed-by: Patrick Palka <ppalka@redhat.com>