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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/108354] [13 Regression] Dead Code Elimination Regression at -O2 since r13-89-gb3e98eb3396e16
Date: Tue, 31 Jan 2023 20:01:53 +0000 [thread overview]
Message-ID: <bug-108354-4-dGvmG13ISe@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-108354-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108354
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Andrew Pinski from comment #3)
> (In reply to Andrew Pinski from comment #2)
> > This is a specific case of PR 91213 and the case which will also fix PR
> > 96921:
> >
> > /* 1 - a is a ^ 1 if a had a bool range. */
> > (simplify
> > (minus integer_onep@0 SSA_NAME@1)
> > (if (INTEGRAL_TYPE_P (type)
> > && ssa_name_has_boolean_range (@1))
> > (bit_xor @1 @0)))
>
> I might be running into an Ada build failure with this patch; I am double
> checking this now. It also could be a latent bug ...
I added an extra check for TYPE_UNSIGNED and there is still an issue.
I suspect there might be a latent bug happening somewhere.
apinski@xeond:~/src/upstream-gcc/gcc/objdir/gcc/ada/tools$ ../../xgcc -B../../
-c -g -O2 -W -Wall -gnatpg -gnata -I- -I../rts -I.
-I/home/apinski/src/upstream-gcc/gcc/gcc/ada
/home/apinski/src/upstream-gcc/gcc/gcc/ada/gnatlink.adb -o gnatlink.o -v
Reading specs from ../../specs
COLLECT_GCC=../../xgcc
Target: x86_64-pc-linux-gnu
Configured with: /home/apinski/src/upstream-gcc/gcc/configure
--prefix=/home/apinski/upstream-gcc
--enable-languages=c,c++,fortran,lto,objc,go,ada
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 13.0.1 20230131 (experimental) [master 733988099bc] (GCC)
COLLECT_GCC_OPTIONS='-B' '../../' '-c' '-g' '-O2' '-Wextra' '-Wall' '-gnatpg'
'-gnata' '-I' '-' '-I' '../rts' '-I' '.' '-I'
'/home/apinski/src/upstream-gcc/gcc/gcc/ada' '-o' 'gnatlink.o' '-v'
'-mtune=generic' '-march=x86-64'
../../gnat1 -I - -I ../rts -I . -I /home/apinski/src/upstream-gcc/gcc/gcc/ada
-quiet -O2 -Wextra -Wall -dumpbase gnatlink.adb -dumpbase-ext .adb -gnatwa -g
-gnatpg -gnata -mtune=generic -march=x86-64 -gnatO gnatlink.o
/home/apinski/src/upstream-gcc/gcc/gcc/ada/gnatlink.adb -o /tmp/ccn5ePu7.s
raised STORAGE_ERROR : stack overflow or erroneous memory access
next prev parent reply other threads:[~2023-01-31 20:01 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-10 12:41 [Bug tree-optimization/108354] New: Dead Code Elimination Regression at -O2 (trunk vs. 12.2.0) yann at ywg dot ch
2023-01-10 14:44 ` [Bug tree-optimization/108354] [13 Regression] Dead Code Elimination Regression at -O2 since r13-89-gb3e98eb3396e16 marxin at gcc dot gnu.org
2023-01-31 4:33 ` pinskia at gcc dot gnu.org
2023-01-31 4:52 ` pinskia at gcc dot gnu.org
2023-01-31 8:23 ` pinskia at gcc dot gnu.org
2023-01-31 20:01 ` pinskia at gcc dot gnu.org [this message]
2023-01-31 20:06 ` pinskia at gcc dot gnu.org
2023-01-31 20:07 ` pinskia at gcc dot gnu.org
2023-02-14 21:47 ` pinskia at gcc dot gnu.org
2023-02-14 21:48 ` pinskia at gcc dot gnu.org
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