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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug ipa/97292] [11 Regression] dealII from SPECCPU 2016 no longer terminates after g:c34db4b6f8a5d80367c709309f9b00cb32630054
Date: Thu, 08 Oct 2020 11:38:55 +0000 [thread overview]
Message-ID: <bug-97292-4-qzfRCKmWDm@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-97292-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97292
--- Comment #7 from Martin Liška <marxin at gcc dot gnu.org> ---
Ok, I've just installed the patch with the debug counter.
I can reproduce it with first bad value with --param=lto-partitions=1:
-fdbg-cnt=ipa_mod_ref:16848
and the difference comes from dealII.ltrans0.ltrans.137t.pre:
distribute_dofs (struct DoFHandler * const this, const struct FiniteElement &
ff, const unsigned int offset):
GOOD:
<bb 164> [local count: 410235502]:
# __n_981 = PHI <__n_979(163), __n_978(162)>
# __tmp$_M_p_984 = PHI <_980(163), _977(162)>
_982 = (unsigned int) __n_981;
_983 = 1 << _982;
_985 = *__tmp$_M_p_984;
_986 = _983 | _985;
*__tmp$_M_p_984 = _986;
operator++ (&cell);
_25 = BIT_FIELD_REF <MEM[(const struct TriaAccessor *)&cell + 8B], 64, 0>;
if (_25 != -1)
goto <bb 165>; [89.00%]
else
goto <bb 166>; [11.00%]
<bb 165> [local count: 365109597]:
pretmp_2354 = MEM[(int *)&cell + 12B];
goto <bb 132>; [100.00%]
<bb 166> [local count: 50703262]:
# next_free_dof_577 = PHI <offset_13(D)(128), next_free_dof_822(164)>
this_6(D)->used_dofs = next_free_dof_577;
MEM[(struct _Bvector_impl_data *)&tmp] ={v} {CLOBBER};
MEM[(struct __as_base &)&tmp] ={v} {CLOBBER};
BAD:
<bb 164> [local count: 410235502]:
# __n_981 = PHI <__n_979(163), __n_978(162)>
# __tmp$_M_p_984 = PHI <_980(163), _977(162)>
_982 = (unsigned int) __n_981;
_983 = 1 << _982;
_985 = *__tmp$_M_p_984;
_986 = _983 | _985;
*__tmp$_M_p_984 = _986;
operator++ (&cell);
_25 = BIT_FIELD_REF <MEM[(const struct TriaAccessor *)&cell + 8B], 64, 0>;
if (_25 != -1)
goto <bb 132>; [89.00%]
else
goto <bb 165>; [11.00%]
<bb 165> [local count: 50703262]:
# next_free_dof_577 = PHI <offset_13(D)(128), next_free_dof_822(164)>
this_6(D)->used_dofs = next_free_dof_577;
MEM[(struct _Bvector_impl_data *)&tmp] ={v} {CLOBBER};
MEM[(struct __as_base &)&tmp] ={v} {CLOBBER};
next prev parent reply other threads:[~2020-10-08 11:38 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-05 13:53 [Bug ipa/97292] New: " tnfchris at gcc dot gnu.org
2020-10-06 7:40 ` [Bug ipa/97292] " marxin at gcc dot gnu.org
2020-10-08 8:25 ` Jan Hubicka
2020-10-06 8:27 ` marxin at gcc dot gnu.org
2020-10-06 16:44 ` hubicka at ucw dot cz
2020-10-07 9:13 ` marxin at gcc dot gnu.org
2020-10-07 11:20 ` rguenth at gcc dot gnu.org
2020-10-08 8:25 ` hubicka at ucw dot cz
2020-10-08 11:38 ` marxin at gcc dot gnu.org [this message]
2020-10-08 12:18 ` marxin at gcc dot gnu.org
2020-10-08 12:18 ` marxin at gcc dot gnu.org
2020-10-08 12:23 ` marxin at gcc dot gnu.org
2020-10-08 15:34 ` [Bug ipa/97292] [11 Regression] dealII from SPECCPU 2006 " marxin at gcc dot gnu.org
2020-10-08 15:53 ` tnfchris at gcc dot gnu.org
2020-10-08 17:29 ` hubicka at gcc dot gnu.org
2020-10-08 17:36 ` hubicka at gcc dot gnu.org
2020-10-08 17:44 ` hubicka at gcc dot gnu.org
2020-10-09 7:07 ` marxin at gcc dot gnu.org
2020-10-09 7:31 ` hubicka at gcc dot gnu.org
2020-10-09 7:42 ` marxin at gcc dot gnu.org
2020-10-09 10:27 ` cvs-commit at gcc dot gnu.org
2020-10-09 10:28 ` marxin at gcc dot gnu.org
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