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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/108140] ICE expanding __rbit
Date: Mon, 19 Dec 2022 11:19:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108140

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Kyrylo Tkachov <ktkachov@gcc.gnu.org>:

https://gcc.gnu.org/g:98756bcbe27647f263f2b312d1d933d70cf56ba9

commit r13-4777-g98756bcbe27647f263f2b312d1d933d70cf56ba9
Author: Kyrylo Tkachov <kyrylo.tkachov@arm.com>
Date:   Mon Dec 19 11:16:47 2022 +0000

    aarch64: PR target/108140 Handle NULL target in data intrinsic expansion

    In this PR we ICE when expanding the __rbit builtin with a NULL target =
rtx.
    I *think* that only happens when the result is unused and hence maybe we
shouldn't be expanding
    any RTL at all, but the ICE here is easily fixed by deriving the mode f=
rom
the type of the expression
    rather than the target.

    This patch does that.
    Bootstrapped and tested on aarch64-none-linux-gnu.

    gcc/ChangeLog:

            PR target/108140
            * config/aarch64/aarch64-builtins.cc
            (aarch64_expand_builtin_data_intrinsic): Handle NULL target.

    gcc/testsuite/ChangeLog:

            PR target/108140
            * gcc.target/aarch64/acle/pr108140.c: New test.=