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* [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed
@ 2022-01-29 8:29 zhendong.su at inf dot ethz.ch
2022-01-29 8:31 ` [Bug tree-optimization/104279] " zhendong.su at inf dot ethz.ch
` (5 more replies)
0 siblings, 6 replies; 7+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2022-01-29 8:29 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104279
Bug ID: 104279
Summary: ICE on valid code at -O1 and above on
x86_64-linux-gnu: verify_gimple failed
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.
[551] % 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/12.0.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--prefix=/local/suz-local/software/local/gcc-trunk --enable-languages=c,c++
--disable-werror --enable-multilib --with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 12.0.1 20220129 (experimental) [master r12-6930-gf6f2d6cfec1] (GCC)
[552] %
[552] % gcctk -O0 small.c; ./a.out
[553] %
[553] % gcctk -O1 small.c
small.c: In function ‘main’:
small.c:6:1: error: bogus comparison result type
6 | }
| ^
unsigned int
_5 = a.1_3 == 4294967294;
during GIMPLE pass: fre
small.c:6:1: internal compiler error: verify_gimple failed
0xe52365 verify_gimple_in_cfg(function*, bool)
../../gcc-trunk/gcc/tree-cfg.cc:5559
0xce8ece execute_function_todo
../../gcc-trunk/gcc/passes.cc:2084
0xce9952 execute_todo
../../gcc-trunk/gcc/passes.cc:2138
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.
[554] %
[554] % cat small.c
unsigned a, b;
int main() {
b = ~(0 || ~0);
a = ~b / ~a;
return 0;
}
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/104279] ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed
2022-01-29 8:29 [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed zhendong.su at inf dot ethz.ch
@ 2022-01-29 8:31 ` zhendong.su at inf dot ethz.ch
2022-01-29 9:34 ` [Bug tree-optimization/104279] [12 Regregression] " pinskia at gcc dot gnu.org
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: zhendong.su at inf dot ethz.ch @ 2022-01-29 8:31 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104279
--- Comment #1 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
>From Compiler Explorer: https://godbolt.org/z/465M9Kvx1
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/104279] [12 Regregression] ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed
2022-01-29 8:29 [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed zhendong.su at inf dot ethz.ch
2022-01-29 8:31 ` [Bug tree-optimization/104279] " zhendong.su at inf dot ethz.ch
@ 2022-01-29 9:34 ` pinskia at gcc dot gnu.org
2022-01-29 9:37 ` pinskia at gcc dot gnu.org
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-01-29 9:34 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104279
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|--- |12.0
Version|unknown |12.0
Summary|ICE on valid code at -O1 |[12 Regregression] ICE on
|and above on |valid code at -O1 and above
|x86_64-linux-gnu: |on x86_64-linux-gnu:
|verify_gimple failed |verify_gimple failed
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/104279] [12 Regregression] ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed
2022-01-29 8:29 [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed zhendong.su at inf dot ethz.ch
2022-01-29 8:31 ` [Bug tree-optimization/104279] " zhendong.su at inf dot ethz.ch
2022-01-29 9:34 ` [Bug tree-optimization/104279] [12 Regregression] " pinskia at gcc dot gnu.org
@ 2022-01-29 9:37 ` pinskia at gcc dot gnu.org
2022-01-29 16:55 ` cvs-commit at gcc dot gnu.org
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-01-29 9:37 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104279
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this one and the other two are all caused by r12-6924.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/104279] [12 Regregression] ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed
2022-01-29 8:29 [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed zhendong.su at inf dot ethz.ch
` (2 preceding siblings ...)
2022-01-29 9:37 ` pinskia at gcc dot gnu.org
@ 2022-01-29 16:55 ` cvs-commit at gcc dot gnu.org
2022-01-29 16:58 ` jakub at gcc dot gnu.org
2022-01-31 21:27 ` pinskia at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2022-01-29 16:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104279
--- Comment #3 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:a1544878966020d1f7a640b35d1f7a5f0e055624
commit r12-6931-ga1544878966020d1f7a640b35d1f7a5f0e055624
Author: Jakub Jelinek <jakub@redhat.com>
Date: Sat Jan 29 17:54:43 2022 +0100
match.pd: Fix up 1 / X for unsigned X optimization [PR104280]
On Fri, Jan 28, 2022 at 11:38:23AM -0700, Jeff Law wrote:
> Thanks. Given the original submission and most of the review work was
done
> prior to stage3 closing, I went ahead and installed this on the trunk.
Unfortunately this breaks quite a lot of things.
The main problem is that GIMPLE allows EQ_EXPR etc. only with BOOLEAN_TYPE
or with TYPE_PRECISION == 1 integral type (or vector boolean).
Violating this causes verification failures in tree-cfg.cc in some cases,
in other cases wrong-code issues because before it is verified we e.g.
transform
1U / x
into
x == 1U
and later into
x (because we assume that == type must be one of the above cases and
when it is the same type as the type of the first operand, for boolean-ish
cases it should be equivalent).
Fixed by changing that
(eq @1 { build_one_cst (type); })
into
(convert (eq:boolean_type_node @1 { build_one_cst (type); }))
Note, I'm not 100% sure if :boolean_type_node is required in that case,
I see some spots in match.pd that look exactly like this, while there is
e.g. (convert (le ...)) that supposedly does the right thing too.
The signed integer 1/X case doesn't need changes changes, for
(cond (le ...) ...)
le gets correctly boolean_type_node and cond should use type.
I've also reformatted it, some lines were too long, match.pd uses
indentation by 1 column instead of 2 etc.
2022-01-29 Jakub Jelinek <jakub@redhat.com>
Andrew Pinski <apinski@marvell.com>
PR tree-optimization/104279
PR tree-optimization/104280
PR tree-optimization/104281
* match.pd (1 / X -> X == 1 for unsigned X): Build eq with
boolean_type_node and convert to type. Formatting fixes.
* gcc.dg/torture/pr104279.c: New test.
* gcc.dg/torture/pr104280.c: New test.
* gcc.dg/torture/pr104281.c: New test.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/104279] [12 Regregression] ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed
2022-01-29 8:29 [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed zhendong.su at inf dot ethz.ch
` (3 preceding siblings ...)
2022-01-29 16:55 ` cvs-commit at gcc dot gnu.org
@ 2022-01-29 16:58 ` jakub at gcc dot gnu.org
2022-01-31 21:27 ` pinskia at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: jakub at gcc dot gnu.org @ 2022-01-29 16:58 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104279
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
Status|UNCONFIRMED |RESOLVED
Resolution|--- |FIXED
Assignee|unassigned at gcc dot gnu.org |jakub at gcc dot gnu.org
--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 7+ messages in thread
* [Bug tree-optimization/104279] [12 Regregression] ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed
2022-01-29 8:29 [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed zhendong.su at inf dot ethz.ch
` (4 preceding siblings ...)
2022-01-29 16:58 ` jakub at gcc dot gnu.org
@ 2022-01-31 21:27 ` pinskia at gcc dot gnu.org
5 siblings, 0 replies; 7+ messages in thread
From: pinskia at gcc dot gnu.org @ 2022-01-31 21:27 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104279
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dcb314 at hotmail dot com
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
*** Bug 104310 has been marked as a duplicate of this bug. ***
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2022-01-31 21:27 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
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2022-01-29 8:29 [Bug tree-optimization/104279] New: ICE on valid code at -O1 and above on x86_64-linux-gnu: verify_gimple failed zhendong.su at inf dot ethz.ch
2022-01-29 8:31 ` [Bug tree-optimization/104279] " zhendong.su at inf dot ethz.ch
2022-01-29 9:34 ` [Bug tree-optimization/104279] [12 Regregression] " pinskia at gcc dot gnu.org
2022-01-29 9:37 ` pinskia at gcc dot gnu.org
2022-01-29 16:55 ` cvs-commit at gcc dot gnu.org
2022-01-29 16:58 ` jakub at gcc dot gnu.org
2022-01-31 21:27 ` pinskia at gcc dot gnu.org
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