https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113459

--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:dcd5601c2b7298155c9a8e1bfb93ee8e952eca0b

commit r14-8276-gdcd5601c2b7298155c9a8e1bfb93ee8e952eca0b
Author: Jakub Jelinek <ja...@redhat.com>
Date:   Fri Jan 19 10:00:16 2024 +0100

    sccvn: Don't use SCALAR_INT_TYPE_MODE on BLKmode BITINT_TYPEs [PR113459]

    sccvn uses GET_MODE_SIZE (SCALAR_INT_TYPE_MODE (type)) for INTEGER_TYPEs,
    most likely because that is what native_{interpret,encode}_int used.
    This obviously doesn't work for larger BITINT_TYPEs which have BLKmode
    and the above ICEs on those.  native_{interpret,encode}_int checks whether
    the BITINT_TYPE is medium/large/huge (i.e. an array of 2+ ABI limbs)
    and uses TYPE_SIZE_UNIT for that case, otherwise SCALAR_INT_TYPE_MODE like
    for the INTEGER_TYPE case.

    The following patch instead just uses SCALAR_INT_TYPE_MODE for non-BLKmode
    TYPE_MODE and TYPE_SIZE_UNIT otherwise.

    2024-01-19  Jakub Jelinek  <ja...@redhat.com>

            PR tree-optimization/113459
            * tree-ssa-sccvn.cc (vn_walk_cb_data::push_partial_def): Use
            TREE_INT_CST_LOW of TYPE_SIZE_UNIT rather than GET_MODE_SIZE
            of SCALAR_INT_TYPE_MODE if type has BLKmode.
            (vn_reference_lookup_3): Likewise.  Formatting fix.

            * gcc.dg/bitint-73.c: New test.

Reply via email to