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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug middle-end/101642] [12 Regression] ice in decompose, at
 wide-int.h:984
Date: Tue, 27 Jul 2021 14:15:16 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101642

--- Comment #8 from Zdenek Sojka <zsojka at seznam dot cz> ---
(In reply to Jakub Jelinek from comment #7)
> I think better testcase would be
> int x;
>=20
> unsigned short
> foo (void)
> {
>   return __builtin_bswap16 (x) ? : x;
> }
> because otherwise you're asking for it to be DCEd.
>=20

Indeed, but when I tried this, it didn't ICE any more. (but I didn't explore
this any further)=