[Bug middle-end/113988] during GIMPLE pass: bitintlower: internal compiler error: in lower_stmt, at gimple-lower-bitint.cc:5470

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113988

--- Comment #28 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:cc383e9702897dd783657ea3dce4aecf48318441

commit r14-9203-gcc383e9702897dd783657ea3dce4aecf48318441
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Wed Feb 28 09:40:15 2024 +0100

    gimple-fold: Use bitwise vector types rather than barely supported huge
integral types in memcpy etc. folding [PR113988]

    The following patch changes the memcpy etc. folding to use bitwise vector
    types rather  than huge INTEGER_TYPEs for copying of > MAX_FIXED_MODE_SIZE
    lengths.  The problem with the huge INTEGER_TYPEs is that they aren't
    supported very much, usually there are just optabs to handle moves of them,
    perhaps misaligned moves and that is it, so they pose problems e.g. to
    BITINT_TYPE lowering.

    2024-02-28  Jakub Jelinek  <jakub@redhat.com>

            PR tree-optimization/113988
            * stor-layout.h (bitwise_mode_for_size): Declare.
            * stor-layout.cc (bitwise_mode_for_size): New function.
            * gimple-fold.cc (gimple_fold_builtin_memory_op): Use it.
            Use bitwise_type_for_mode instead of
build_nonstandard_integer_type.
            Use BITS_PER_UNIT instead of 8.

            * gcc.dg/bitint-91.c: New test.