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Subject: [Bug tree-optimization/101636] [11/12 Regression] ICE: verify_gimple
 failed (error: conversion of register to a different size in
 'view_convert_expr')
Date: Wed, 23 Feb 2022 11:14:37 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101636

--- Comment #16 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:6e80c4f1ad9046b0a7c105660cc7b3dcae0fdb8f

commit r12-7359-g6e80c4f1ad9046b0a7c105660cc7b3dcae0fdb8f
Author: Richard Biener <rguenther@suse.de>
Date:   Wed Feb 23 11:15:38 2022 +0100

    tree-optimization/101636 - CTOR vectorization ICE

    The following fixes an ICE when vectorizing the defs of a CTOR
    results in a different vector type than expected.  That can happen
    with AARCH64 SVE and a fixed vector length as noted in r10-5979
    and on x86 with AVX512 mask CTORs and trying to re-vectorize
    using SSE as shown in this bug.

    The fix is simply to reject the vectorization when it didn't
    produce the desired type.

    2022-02-23  Richard Biener  <rguenther@suse.de>

            PR tree-optimization/101636
            * tree-vect-slp.cc (vect_print_slp_tree): Dump the
            vector type of the node.
            (vect_slp_analyze_operations): Make sure the CTOR
            is vectorized with an expected type.
            (vectorize_slp_instance_root_stmt): Revert r10-5979 fix.

            * gcc.target/i386/pr101636.c: New testcase.
            * c-c++-common/torture/pr101636.c: Likewise.=