[Bug c++/99246] [modules] ICE in write_location, at cp/module.cc:15687

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99246

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Sandiford <rsandifo@gcc.gnu.org>:

https://gcc.gnu.org/g:a065e0bb092a010664777394530ab1a52bb5293b

commit r11-8178-ga065e0bb092a010664777394530ab1a52bb5293b
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Wed Apr 14 16:19:46 2021 +0100

    aarch64: Handle more SVE vector constants [PR99246]

    PR99246 is about a case in which we failed to handle a CONST_VECTOR
    with NELTS_PER_PATTERN==2, i.e. a vector with a âforegroundâ sequence
    of N vectors followed by a repeating âbackgroundâ sequence of N
vectors.

    At the moment, it's difficult to produce these vectors directly,
    but I'm hoping that for GCC 12 we'll do more folding, which will
    in turn make this easier to test and easier to optimise.  Until then,
    the patch simply relies on the testcase in the PR.

    gcc/
            PR target/99246
            * config/aarch64/aarch64.c (aarch64_expand_sve_const_vector_sel):
            New function.
            (aarch64_expand_sve_const_vector): Use it for nelts_per_pattern==2.

    gcc/testsuite/
            PR target/99246
            * gcc.target/aarch64/sve/acle/general/pr99246.c: New test.