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* [Bug c++/97753] New: ice in operator[], at vec.h:880
@ 2020-11-07 17:56 dcb314 at hotmail dot com
2020-11-09 8:09 ` [Bug tree-optimization/97753] " rguenth at gcc dot gnu.org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: dcb314 at hotmail dot com @ 2020-11-07 17:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
Bug ID: 97753
Summary: ice in operator[], at vec.h:880
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
For this C++ code:
long a[6];
void d() {
for (int c; c; c++)
for (int b = 0; b < 8; b++)
((char *)&a[c])[b] = c;
}
compiled by recent gcc trunk and compiler flag -O3, does this:
during GIMPLE pass: vect
bug669.cc: In function ‘void d()’:
bug669.cc:2:6: internal compiler error: in operator[], at vec.h:880
2 | void d() {
| ^
0x861070 vec<_slp_tree*, va_heap, vl_embed>::operator[](unsigned int)
../../trunk.git/gcc/vec.h:880
0x861070 vec<_slp_tree*, va_heap, vl_ptr>::operator[](unsigned int)
../../trunk.git/gcc/vec.h:1451
0x861070 vectorizable_induction(_loop_vec_info*, _stmt_vec_info*, gimple**,
_slp
_tree*, vec<stmt_info_for_cost, va_heap, vl_ptr>*)
../../trunk.git/gcc/tree-vect-loop.c:7929
0x1487820 vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*,
_slp_tree*, _slp_instance*)
../../trunk.git/gcc/tree-vect-stmts.c:10782
The problem first seems to appear sometime between 20201104 and 20201105.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97753] ice in operator[], at vec.h:880
2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
@ 2020-11-09 8:09 ` rguenth at gcc dot gnu.org
2020-11-09 8:10 ` [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759 marxin at gcc dot gnu.org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-11-09 8:09 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Last reconfirmed| |2020-11-09
Version|unknown |11.0
Status|UNCONFIRMED |ASSIGNED
Component|c++ |tree-optimization
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759
2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
2020-11-09 8:09 ` [Bug tree-optimization/97753] " rguenth at gcc dot gnu.org
@ 2020-11-09 8:10 ` marxin at gcc dot gnu.org
2020-11-09 8:54 ` marxin at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-11-09 8:10 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
Martin Liška <marxin at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |11.0
Keywords| |ice-on-valid-code
CC| |marxin at gcc dot gnu.org,
| |rguenth at gcc dot gnu.org
Status|ASSIGNED |NEW
Target Milestone|--- |11.0
Priority|P3 |P1
Known to work| |10.2.0
Summary|ice in operator[], at |ICE in operator[], at
|vec.h:880 |vec.h:880 since
| |r11-4714-g092cdbd919849759
--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
Started with r11-4714-g092cdbd919849759.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759
2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
2020-11-09 8:09 ` [Bug tree-optimization/97753] " rguenth at gcc dot gnu.org
2020-11-09 8:10 ` [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759 marxin at gcc dot gnu.org
@ 2020-11-09 8:54 ` marxin at gcc dot gnu.org
2020-11-09 8:56 ` marxin at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-11-09 8:54 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
*** Bug 97763 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759
2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
` (2 preceding siblings ...)
2020-11-09 8:54 ` marxin at gcc dot gnu.org
@ 2020-11-09 8:56 ` marxin at gcc dot gnu.org
2020-11-09 12:28 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: marxin at gcc dot gnu.org @ 2020-11-09 8:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
--- Comment #4 from Martin Liška <marxin at gcc dot gnu.org> ---
Maybe a bit different backtrace:
$ cat trigger.i
typedef struct {
_Bool trig_insert_before_row;
_Bool trig_insert_after_row;
_Bool trig_insert_instead_row;
_Bool trig_insert_before_statement;
_Bool trig_insert_after_statement;
_Bool trig_update_before_row;
_Bool trig_update_after_row;
_Bool trig_update_instead_row;
_Bool trig_update_before_statement;
_Bool trig_update_after_statement;
_Bool trig_delete_before_row;
_Bool trig_delete_after_row;
_Bool trig_delete_instead_row;
_Bool trig_delete_before_statement;
_Bool trig_delete_after_statement;
_Bool trig_truncate_before_statement;
} TriggerDesc;
void SetTriggerFlags();
void
RelationBuildTriggers() {
int i;
for (; i; i++)
SetTriggerFlags();
}
void
SetTriggerFlags(TriggerDesc *trigdesc) {
short tgtype;
trigdesc->trig_insert_before_row |= trigdesc->trig_insert_after_row |=
trigdesc->trig_insert_instead_row |= tgtype == 0;
trigdesc->trig_insert_before_statement |=
trigdesc->trig_insert_after_statement |=
trigdesc->trig_update_before_row |= trigdesc->trig_update_after_row |=
trigdesc->trig_update_instead_row |=
trigdesc->trig_update_before_statement |=
trigdesc->trig_update_after_statement |=
trigdesc->trig_delete_before_row |= trigdesc->trig_delete_after_row |=
trigdesc->trig_delete_instead_row |=
trigdesc->trig_delete_before_statement |=
trigdesc->trig_delete_after_statement |=
trigdesc->trig_truncate_before_statement |= tgtype == 0;
}
$ gcc -O3 trigger.i -c -fno-strict-aliasing
during GIMPLE pass: slp
trigger.i: In function ‘RelationBuildTriggers’:
trigger.i:23:1: internal compiler error: in operator[], at vec.h:880
23 | RelationBuildTriggers() {
| ^~~~~~~~~~~~~~~~~~~~~
0x732816 vec<edge_def*, va_gc, vl_embed>::operator[](unsigned int)
/home/marxin/Programming/gcc/gcc/vec.h:880
0x733364 vec<tree_node*, va_heap, vl_embed>::operator[](unsigned int)
/home/marxin/Programming/gcc/gcc/tree.h:3428
0x733364 vec<tree_node*, va_heap, vl_ptr>::operator[](unsigned int)
/home/marxin/Programming/gcc/gcc/vec.h:1451
0x733364 vect_create_vectorized_demotion_stmts
/home/marxin/Programming/gcc/gcc/tree-vect-stmts.c:4422
0x10245fb vectorizable_conversion
/home/marxin/Programming/gcc/gcc/tree-vect-stmts.c:4993
0x10264d8 vect_transform_stmt(vec_info*, _stmt_vec_info*,
gimple_stmt_iterator*, _slp_tree*, _slp_instance*)
/home/marxin/Programming/gcc/gcc/tree-vect-stmts.c:10776
0x105534c vect_schedule_slp_node
/home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5437
0x106071c vect_schedule_scc
/home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5599
0x106048f vect_schedule_scc
/home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5580
0x1060d07 vect_schedule_slp(vec_info*, vec<_slp_instance*, va_heap, vl_ptr>)
/home/marxin/Programming/gcc/gcc/tree-vect-slp.c:5715
0x106208c vect_slp_region
/home/marxin/Programming/gcc/gcc/tree-vect-slp.c:4264
0x106208c vect_slp_bbs
/home/marxin/Programming/gcc/gcc/tree-vect-slp.c:4374
0x1062e54 vect_slp_function(function*)
/home/marxin/Programming/gcc/gcc/tree-vect-slp.c:4460
0x1064cc6 execute
/home/marxin/Programming/gcc/gcc/tree-vectorizer.c:1437
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759
2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
` (3 preceding siblings ...)
2020-11-09 8:56 ` marxin at gcc dot gnu.org
@ 2020-11-09 12:28 ` rguenth at gcc dot gnu.org
2020-11-09 13:57 ` cvs-commit at gcc dot gnu.org
2020-11-09 13:58 ` rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-11-09 12:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
Status|NEW |ASSIGNED
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759
2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
` (4 preceding siblings ...)
2020-11-09 12:28 ` rguenth at gcc dot gnu.org
@ 2020-11-09 13:57 ` cvs-commit at gcc dot gnu.org
2020-11-09 13:58 ` rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2020-11-09 13:57 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Richard Biener <rguenth@gcc.gnu.org>:
https://gcc.gnu.org/g:f5761c318a5a973ba2e4e5b09a5213f4e3ad0570
commit r11-4836-gf5761c318a5a973ba2e4e5b09a5213f4e3ad0570
Author: Richard Biener <rguenther@suse.de>
Date: Mon Nov 9 14:03:14 2020 +0100
tree-optimization/97753 - fix SLP induction vect
This fixes updating of the step vectors when filling up to group_size.
2020-11-09 Richard Biener <rguenther@suse.de>
PR tree-optimization/97753
* tree-vect-loop.c (vectorizable_induction): Fill vec_steps
when CSEing inside the group.
* gcc.dg/vect/pr97753.c: New testcase.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759
2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
` (5 preceding siblings ...)
2020-11-09 13:57 ` cvs-commit at gcc dot gnu.org
@ 2020-11-09 13:58 ` rguenth at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: rguenth at gcc dot gnu.org @ 2020-11-09 13:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97753
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|ASSIGNED |RESOLVED
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 8+ messages in thread
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2020-11-07 17:56 [Bug c++/97753] New: ice in operator[], at vec.h:880 dcb314 at hotmail dot com
2020-11-09 8:09 ` [Bug tree-optimization/97753] " rguenth at gcc dot gnu.org
2020-11-09 8:10 ` [Bug tree-optimization/97753] ICE in operator[], at vec.h:880 since r11-4714-g092cdbd919849759 marxin at gcc dot gnu.org
2020-11-09 8:54 ` marxin at gcc dot gnu.org
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