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Subject: [Bug ipa/97292] [11 Regression] dealII from SPECCPU 2006 no longer
 terminates after g:c34db4b6f8a5d80367c709309f9b00cb32630054
Date: Fri, 09 Oct 2020 07:42:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D97292

--- Comment #18 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
(In reply to Jan Hubicka from comment #17)
> And is it again the operator++ triggering the problem?
> It looks like aliasing bug to me, but in a template hell and
> -Wstrict-aliasing=3D3 is happy.

It's another place where a *(&cell + 12) is moved by PRE:

   <bb 167> [local count: 365109597]:
   pretmp_2371 =3D MEM[(const struct Triangulation * *)&cell + 16B];
   pretmp_2373 =3D MEM[(int *)&cell + 8B];
-  pretmp_2375 =3D MEM[(int *)&cell + 12B];
   goto <bb 131>; [100.00%]


>=20
> The reason why parameter tracking is necessary seems to be the fact that =
we
> figure out some accesses from inner calls are local to the ++ operator and
> do not consider them in a summary (that is correct)=