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* [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
@ 2023-03-13 20:19 zhendong.su at inf dot ethz.ch
2023-03-13 20:23 ` [Bug tree-optimization/109115] [13 Regression] " pinskia at gcc dot gnu.org
` (6 more replies)
0 siblings, 7 replies; 8+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2023-03-13 20:19 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
Bug ID: 109115
Summary: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu:
in upper_bound, at value-range.h:950
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: zhendong.su at inf dot ethz.ch
Target Milestone: ---
It appears to be a recent regression as it does not reproduce with 12.2.
Compiler Explorer: https://godbolt.org/z/Yjaj5qMvv
[569] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/13.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk
--enable-sanitizers --enable-languages=c,c++ --disable-werror --enable-multilib
--with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 13.0.1 20230313 (experimental) [master r13-6641-g23532dac3f6] (GCC)
[570] %
[570] % gcctk -Os small.c; ./a.out
[571] %
[571] % gcctk -O2 small.c
during GIMPLE pass: slp
small.c: In function ‘main’:
small.c:2:5: internal compiler error: in upper_bound, at value-range.h:950
2 | int main() {
| ^~~~
0xc48c63 irange::upper_bound() const
../../gcc-trunk/gcc/value-range.h:950
0xc48c63 irange::upper_bound() const
../../gcc-trunk/gcc/value-range.h:947
0x1e9e7ca vect_recog_divmod_pattern
../../gcc-trunk/gcc/tree-vect-patterns.cc:3978
0x1e9808a vect_pattern_recog_1
../../gcc-trunk/gcc/tree-vect-patterns.cc:6244
0x1e9d3c1 vect_pattern_recog(vec_info*)
../../gcc-trunk/gcc/tree-vect-patterns.cc:6401
0x11a97dc vect_slp_analyze_bb_1
../../gcc-trunk/gcc/tree-vect-slp.cc:7310
0x11a97dc vect_slp_region
../../gcc-trunk/gcc/tree-vect-slp.cc:7419
0x11abac3 vect_slp_bbs
../../gcc-trunk/gcc/tree-vect-slp.cc:7610
0x11abe9c vect_slp_function(function*)
../../gcc-trunk/gcc/tree-vect-slp.cc:7698
0x11b6492 execute
../../gcc-trunk/gcc/tree-vectorizer.cc:1532
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
[572] %
[572] % cat small.c
int a, b;
int main() {
unsigned short c = a, e = -1;
if (b) {
unsigned d = (a ^ 1U) / a & c;
int f = (~d >> ~a) / e;
if (a)
f = a;
a = f;
}
return 0;
}
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/109115] [13 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
@ 2023-03-13 20:23 ` pinskia at gcc dot gnu.org
2023-03-13 20:33 ` pinskia at gcc dot gnu.org
` (5 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-13 20:23 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|ICE on valid code at -O2 |[13 Regression] ICE on
|and -O3 on |valid code at -O2 and -O3
|x86_64-linux-gnu: in |on x86_64-linux-gnu: in
|upper_bound, at |upper_bound, at
|value-range.h:950 |value-range.h:950
Status|UNCONFIRMED |NEW
Keywords| |ice-on-valid-code
Target Milestone|--- |13.0
Last reconfirmed| |2023-03-13
Ever confirmed|0 |1
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Most likely introduced by r13-6619-g81fd62d1378b7d .
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/109115] [13 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
2023-03-13 20:23 ` [Bug tree-optimization/109115] [13 Regression] " pinskia at gcc dot gnu.org
@ 2023-03-13 20:33 ` pinskia at gcc dot gnu.org
2023-03-13 21:55 ` jakub at gcc dot gnu.org
` (4 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-03-13 20:33 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Version|unknown |13.0
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I would have assumed range_of_expr would return false if r had no range
information ...
if (ranger.range_of_expr (r, oprnd0, stmt))
{
wide_int max = r.upper_bound ();
Maybe there needs to be a check to make sure r.kind () is VR_RANGE then ...
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/109115] [13 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
2023-03-13 20:23 ` [Bug tree-optimization/109115] [13 Regression] " pinskia at gcc dot gnu.org
2023-03-13 20:33 ` pinskia at gcc dot gnu.org
@ 2023-03-13 21:55 ` jakub at gcc dot gnu.org
2023-03-13 22:00 ` jakub at gcc dot gnu.org
` (3 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu.org @ 2023-03-13 21:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
I think it returns false if it is has a type which isn't representable with the
particular range.
Which isn't the case here.
The type is representable, just the range is undefined_p ().
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/109115] [13 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
` (2 preceding siblings ...)
2023-03-13 21:55 ` jakub at gcc dot gnu.org
@ 2023-03-13 22:00 ` jakub at gcc dot gnu.org
2023-03-13 23:51 ` amacleod at redhat dot com
` (2 subsequent siblings)
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu.org @ 2023-03-13 22:00 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 54656
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54656&action=edit
gcc13-pr109115.patch
Untested fix.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/109115] [13 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
` (3 preceding siblings ...)
2023-03-13 22:00 ` jakub at gcc dot gnu.org
@ 2023-03-13 23:51 ` amacleod at redhat dot com
2023-03-14 8:16 ` cvs-commit at gcc dot gnu.org
2023-03-14 8:17 ` jakub at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: amacleod at redhat dot com @ 2023-03-13 23:51 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
Andrew Macleod <amacleod at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |amacleod at redhat dot com
--- Comment #5 from Andrew Macleod <amacleod at redhat dot com> ---
(In reply to Jakub Jelinek from comment #3)
> I think it returns false if it is has a type which isn't representable with
> the particular range.
> Which isn't the case here.
> The type is representable, just the range is undefined_p ().
Correct. If the range is undefined, then you cannot ask for the upper bounds
because there is not one.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/109115] [13 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
` (4 preceding siblings ...)
2023-03-13 23:51 ` amacleod at redhat dot com
@ 2023-03-14 8:16 ` cvs-commit at gcc dot gnu.org
2023-03-14 8:17 ` jakub at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2023-03-14 8:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:
https://gcc.gnu.org/g:72b52751c60abb327c73716259485d04b8eabe4f
commit r13-6653-g72b52751c60abb327c73716259485d04b8eabe4f
Author: Jakub Jelinek <jakub@redhat.com>
Date: Tue Mar 14 09:15:38 2023 +0100
tree-vect-patterns: Fix up ICE in upper_bound [PR109115]
As mentioned in the PR, range_of_expr returns false if the type
of the expression isn't suitable for corresponding range type,
but doesn't if the range is undefined for other reasons. Still,
lower/upper_bound is defined only for ranges which actually have
at least one pair of subranges, VR_UNDEFINED range doesn't have it.
2023-03-14 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/109115
* tree-vect-patterns.cc (vect_recog_divmod_pattern): Don't use
r.upper_bound () on r.undefined_p () range.
* gcc.dg/pr109115.c: New test.
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug tree-optimization/109115] [13 Regression] ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950
2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
` (5 preceding siblings ...)
2023-03-14 8:16 ` cvs-commit at gcc dot gnu.org
@ 2023-03-14 8:17 ` jakub at gcc dot gnu.org
6 siblings, 0 replies; 8+ messages in thread
From: jakub at gcc dot gnu.org @ 2023-03-14 8:17 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109115
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |FIXED
Priority|P3 |P1
--- Comment #7 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 8+ messages in thread
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2023-03-13 20:19 [Bug tree-optimization/109115] New: ICE on valid code at -O2 and -O3 on x86_64-linux-gnu: in upper_bound, at value-range.h:950 zhendong.su at inf dot ethz.ch
2023-03-13 20:23 ` [Bug tree-optimization/109115] [13 Regression] " pinskia at gcc dot gnu.org
2023-03-13 20:33 ` pinskia at gcc dot gnu.org
2023-03-13 21:55 ` jakub at gcc dot gnu.org
2023-03-13 22:00 ` jakub at gcc dot gnu.org
2023-03-13 23:51 ` amacleod at redhat dot com
2023-03-14 8:16 ` cvs-commit at gcc dot gnu.org
2023-03-14 8:17 ` jakub at gcc dot gnu.org
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