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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug tree-optimization/113462] ICE: in handle_cast, at
 gimple-lower-bitint.cc:1539 at -O with _BitInt() in a struct
Date: Sat, 20 Jan 2024 11:37:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113462

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:efc677f3e78abf02264e4a64c751b4ecdc918ec9

commit r14-8303-gefc677f3e78abf02264e4a64c751b4ecdc918ec9
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Sat Jan 20 12:36:32 2024 +0100

    lower-bitint: Handle INTEGER_CST rhs1 in handle_cast [PR113462]

    The following patch ICEs because fre3 leaves around unfolded
      _1 =3D VIEW_CONVERT_EXPR<_BitInt(129)>(0);
    statement and in handle_cast I was expecting just SSA_NAMEs for the
    large/huge _BitInt to large/huge _BitInt casts; INTEGER_CST is something
    we can handle in that case exactly the same, as the handle_operand
recursion
    handles those.

    Of course, maybe we should also try to fold_stmt such cases somewhere in
    bitint lowering preparation.

    2024-01-20  Jakub Jelinek  <jakub@redhat.com>

            PR tree-optimization/113462
            * gimple-lower-bitint.cc (bitint_large_huge::handle_cast):
            Handle rhs1 INTEGER_CST like SSA_NAME.

            * gcc.dg/bitint-76.c: New test.=