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Subject: [Bug target/98959] ICE in extract_constrain_insn, at recog.c:2670
Date: Mon, 08 Mar 2021 18:24:04 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D98959

--- Comment #18 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Peter Bergner <bergner@gcc.gnu.org>:

https://gcc.gnu.org/g:cb25dea3ef2c7768007bffc56f0e31e1c42b44e2

commit r11-7558-gcb25dea3ef2c7768007bffc56f0e31e1c42b44e2
Author: Peter Bergner <bergner@linux.ibm.com>
Date:   Mon Mar 8 12:20:41 2021 -0600

    rs6000: Fix invalid splits when using Altivec style addresses [PR98959]

    The rs6000_emit_le_vsx_* functions assume they are not passed an Altivec
    style "& ~16" address.  However, some of our expanders and splitters do
    not verify we do not have an Altivec style address before calling those
    functions, leading to an ICE.  The solution here is to guard the expand=
ers
    and splitters to ensure we do not call them if we're given an Altivec s=
tyle
    address.

    2021-03-08  Peter Bergner  <bergner@linux.ibm.com>

    gcc/
            PR target/98959
            * config/rs6000/rs6000.c (rs6000_emit_le_vsx_permute): Add an
assert
            to ensure we do not have an Altivec style address.
            * config/rs6000/vsx.md (*vsx_le_perm_load_<mode>): Disable if
passed
            an Altivec style address.
            (*vsx_le_perm_store_<mode>): Likewise.
            (splitters after *vsx_le_perm_store_<mode>): Likewise.
            (vsx_load_<mode>): Disable special expander if passed an Altivec
            style address.
            (vsx_store_<mode>): Likewise.

    gcc/testsuite/
            PR target/98959
            * gcc.target/powerpc/pr98959.c: New test.=