[Bug target/116074] [15 regression] ICE when building harfbuzz-9.0.0 on arm64 (related_int_vector_mode, at stor-layout.cc:581)

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116074

--- Comment #10 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Tamar Christina <tnfch...@gcc.gnu.org>:

https://gcc.gnu.org/g:29e4e4bdb674118b898d50ce7751c183aa0a44ee

commit r15-2336-g29e4e4bdb674118b898d50ce7751c183aa0a44ee
Author: Tamar Christina <tamar.christ...@arm.com>
Date:   Fri Jul 26 13:02:53 2024 +0100

    middle-end: check for vector mode before calling get_mask_mode [PR116074]

    For historical reasons AArch64 has TI mode vector types but does not
consider
    TImode a vector mode.

    What's happening in the PR is that get_vectype_for_scalar_type is returning
    vector(1) TImode for a TImode scalar.  This then fails when we call
    targetm.vectorize.get_mask_mode (vecmode).exists (&) on the TYPE_MODE.

    This checks for vector mode before using the results of
    get_vectype_for_scalar_type.

    gcc/ChangeLog:

            PR target/116074
            * tree-vect-patterns.cc (vect_recog_cond_store_pattern): Check
vector mode.

    gcc/testsuite/ChangeLog:

            PR target/116074
            * g++.target/aarch64/pr116074.C: New test.