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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug debug/113481] avr: internal compiler error in decompose, at
 rtl.h:2298
Date: Thu, 18 Jan 2024 18:03:42 +0000
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X-Bugzilla-Keywords: ice-checking, ice-on-valid-code
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113481

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[14 Regession] avr:         |avr: internal compiler
                   |internal compiler error in  |error in decompose, at
                   |decompose, at rtl.h:2298    |rtl.h:2298
           Keywords|                            |ice-checking
   Target Milestone|14.0                        |---

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note -fchecking does not enable gcc_checking_assert checking so you will ne=
ed
to configure older compilers with --enable-checking=3Dyes to get the assert
hitting.


The assert that hits:
        gcc_checking_assert (INTVAL (x.first)
                             =3D=3D sext_hwi (INTVAL (x.first), precision)
                             || (x.second =3D=3D BImode && INTVAL (x.first)=
 =3D=3D 1));


What this assert is trying to make a point of is that we always sign extend
CONST_INT to HostWideInt (almost always 64bit integer) from the precision of
the mode.=