[Bug tree-optimization/106322] tree-vectorize: Wrong code at O2 level (-fno-tree-vectorize is working)

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From: "malat at debian dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/106322] tree-vectorize: Wrong code at O2 level (-fno-tree-vectorize is working)
Date: Tue, 09 Aug 2022 13:05:43 +0000	[thread overview]
Message-ID: <bug-106322-4-SkX42iCFDs@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-106322-4@http.gcc.gnu.org/bugzilla/>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106322

--- Comment #25 from Mathieu Malaterre <malat at debian dot org> ---
(In reply to Martin Liška from comment #24)
> > sid64 %  g++ *.cc -O2 -m32 && ./a.out
> 
> Please provide output with --verbose.

% g++ --verbose *.cc -O2 -m32 && ./a.out
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/12/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 12.1.0-7'
--with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs
--enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr
--with-gcc-major-version-only --program-suffix=-12
--program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new
--enable-gnu-unique-object --disable-vtable-verify --enable-plugin
--enable-default-pie --with-system-zlib --enable-libphobos-checking=release
--with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch
--disable-werror --enable-cet --with-arch-32=i686 --with-abi=m64
--with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic
--enable-offload-targets=nvptx-none=/build/gcc-12-aYRw0H/gcc-12-12.1.0/debian/tmp-nvptx/usr,amdgcn-amdhsa=/build/gcc-12-aYRw0H/gcc-12-12.1.0/debian/tmp-gcn/usr
--enable-offload-defaulted --without-cuda-driver --enable-checking=release
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.1.0 (Debian 12.1.0-7)
COLLECT_GCC_OPTIONS='-v' '-O2' '-m32' '-shared-libgcc' '-mtune=generic'
'-march=i686' '-dumpdir' 'a-'
 /usr/lib/gcc/x86_64-linux-gnu/12/cc1plus -quiet -v -imultilib 32 -imultiarch
i386-linux-gnu -D_GNU_SOURCE bytes.cc -quiet -dumpdir a- -dumpbase bytes.cc
-dumpbase-ext .cc -m32 -mtune=generic -march=i686 -O2 -version
-fasynchronous-unwind-tables -o /tmp/cccQJh1u.s
GNU C++17 (Debian 12.1.0-7) version 12.1.0 (x86_64-linux-gnu)
        compiled by GNU C version 12.1.0, GMP version 6.2.1, MPFR version
4.1.0, MPC version 1.2.1, isl version isl-0.25-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/12/../../../../include/i386-linux-gnu/c++/12"
ignoring nonexistent directory "/usr/local/include/i386-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/12/include-fixed"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "/usr/include/i386-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/12
 /usr/include/x86_64-linux-gnu/c++/12/32
 /usr/include/c++/12/backward
 /usr/lib/gcc/x86_64-linux-gnu/12/include
 /usr/local/include
 /usr/include
End of search list.
GNU C++17 (Debian 12.1.0-7) version 12.1.0 (x86_64-linux-gnu)
        compiled by GNU C version 12.1.0, GMP version 6.2.1, MPFR version
4.1.0, MPC version 1.2.1, isl version isl-0.25-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 8a56007e6299a53b3d2bb12e46ecf480
COLLECT_GCC_OPTIONS='-v' '-O2' '-m32' '-shared-libgcc' '-mtune=generic'
'-march=i686' '-dumpdir' 'a-'
 as -v --32 -o /tmp/ccG1Wx1X.o /tmp/cccQJh1u.s
GNU assembler version 2.38.90 (x86_64-linux-gnu) using BFD version (GNU
Binutils for Debian) 2.38.90.20220713
COLLECT_GCC_OPTIONS='-v' '-O2' '-m32' '-shared-libgcc' '-mtune=generic'
'-march=i686' '-dumpdir' 'a-'
 /usr/lib/gcc/x86_64-linux-gnu/12/cc1plus -quiet -v -imultilib 32 -imultiarch
i386-linux-gnu -D_GNU_SOURCE demo.cc -quiet -dumpdir a- -dumpbase demo.cc
-dumpbase-ext .cc -m32 -mtune=generic -march=i686 -O2 -version
-fasynchronous-unwind-tables -o /tmp/cccQJh1u.s
GNU C++17 (Debian 12.1.0-7) version 12.1.0 (x86_64-linux-gnu)
        compiled by GNU C version 12.1.0, GMP version 6.2.1, MPFR version
4.1.0, MPC version 1.2.1, isl version isl-0.25-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/12/../../../../include/i386-linux-gnu/c++/12"
ignoring nonexistent directory "/usr/local/include/i386-linux-gnu"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-linux-gnu/12/include-fixed"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-linux-gnu/12/../../../../x86_64-linux-gnu/include"
ignoring nonexistent directory "/usr/include/i386-linux-gnu"
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/12
 /usr/include/x86_64-linux-gnu/c++/12/32
 /usr/include/c++/12/backward
 /usr/lib/gcc/x86_64-linux-gnu/12/include
 /usr/local/include
 /usr/include
End of search list.
GNU C++17 (Debian 12.1.0-7) version 12.1.0 (x86_64-linux-gnu)
        compiled by GNU C version 12.1.0, GMP version 6.2.1, MPFR version
4.1.0, MPC version 1.2.1, isl version isl-0.25-GMP

GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 8a56007e6299a53b3d2bb12e46ecf480
COLLECT_GCC_OPTIONS='-v' '-O2' '-m32' '-shared-libgcc' '-mtune=generic'
'-march=i686' '-dumpdir' 'a-'
 as -v --32 -o /tmp/ccXuCoem.o /tmp/cccQJh1u.s
GNU assembler version 2.38.90 (x86_64-linux-gnu) using BFD version (GNU
Binutils for Debian) 2.38.90.20220713
COMPILER_PATH=/usr/lib/gcc/x86_64-linux-gnu/12/:/usr/lib/gcc/x86_64-linux-gnu/12/:/usr/lib/gcc/x86_64-linux-gnu/:/usr/lib/gcc/x86_64-linux-gnu/12/:/usr/lib/gcc/x86_64-linux-gnu/
LIBRARY_PATH=/usr/lib/gcc/x86_64-linux-gnu/12/32/:/usr/lib/gcc/x86_64-linux-gnu/12/../../../../lib32/:/lib/../lib32/:/usr/lib/../lib32/:/usr/lib/gcc/x86_64-linux-gnu/12/:/usr/lib/gcc/x86_64-linux-gnu/12/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-O2' '-m32' '-shared-libgcc' '-mtune=generic'
'-march=i686' '-dumpdir' 'a.'
 /usr/lib/gcc/x86_64-linux-gnu/12/collect2 -plugin
/usr/lib/gcc/x86_64-linux-gnu/12/liblto_plugin.so
-plugin-opt=/usr/lib/gcc/x86_64-linux-gnu/12/lto-wrapper
-plugin-opt=-fresolution=/tmp/ccDtT2bM.res -plugin-opt=-pass-through=-lgcc_s
-plugin-opt=-pass-through=-lgcc -plugin-opt=-pass-through=-lc
-plugin-opt=-pass-through=-lgcc_s -plugin-opt=-pass-through=-lgcc --build-id
--eh-frame-hdr -m elf_i386 --hash-style=gnu --as-needed -dynamic-linker
/lib/ld-linux.so.2 -pie
/usr/lib/gcc/x86_64-linux-gnu/12/../../../../lib32/Scrt1.o
/usr/lib/gcc/x86_64-linux-gnu/12/../../../../lib32/crti.o
/usr/lib/gcc/x86_64-linux-gnu/12/32/crtbeginS.o
-L/usr/lib/gcc/x86_64-linux-gnu/12/32
-L/usr/lib/gcc/x86_64-linux-gnu/12/../../../../lib32 -L/lib/../lib32
-L/usr/lib/../lib32 -L/usr/lib/gcc/x86_64-linux-gnu/12
-L/usr/lib/gcc/x86_64-linux-gnu/12/../../.. /tmp/ccG1Wx1X.o /tmp/ccXuCoem.o
-lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc/x86_64-linux-gnu/12/32/crtendS.o
/usr/lib/gcc/x86_64-linux-gnu/12/../../../../lib32/crtn.o
COLLECT_GCC_OPTIONS='-v' '-O2' '-m32' '-shared-libgcc' '-mtune=generic'
'-march=i686' '-dumpdir' 'a.'
zsh: IOT instruction  ./a.out

next prev parent reply	other threads:[~2022-08-09 13:05 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-16  9:48 [Bug c++/106322] New: i386: Wrong code at O2 level (O0 / O1 are working) malat at debian dot org
2022-07-16  9:55 ` [Bug c++/106322] " malat at debian dot org
2022-07-16 10:00 ` malat at debian dot org
2022-07-16 10:00 ` malat at debian dot org
2022-07-16 10:02 ` malat at debian dot org
2022-07-16 10:02 ` malat at debian dot org
2022-07-16 10:07 ` malat at debian dot org
2022-07-16 10:15 ` malat at debian dot org
2022-07-17 20:20 ` [Bug target/106322] " pinskia at gcc dot gnu.org
2022-07-18  8:48 ` marxin at gcc dot gnu.org
2022-07-18 14:40 ` malat at debian dot org
2022-07-19  7:58 ` ubizjak at gmail dot com
2022-08-03  8:41 ` malat at debian dot org
2022-08-03 12:31 ` [Bug tree-optimization/106322] 32bits / tree-vectorize: Wrong code at O2 level (-fno-tree-vectorize is working) malat at debian dot org
2022-08-03 12:32 ` malat at debian dot org
2022-08-03 12:33 ` malat at debian dot org
2022-08-05 13:14 ` [Bug tree-optimization/106322] " malat at debian dot org
2022-08-08  7:12 ` malat at debian dot org
2022-08-08  7:20 ` malat at debian dot org
2022-08-08 10:00 ` malat at debian dot org
2022-08-09  7:50 ` malat at debian dot org
2022-08-09 12:36 ` marxin at gcc dot gnu.org
2022-08-09 12:58 ` malat at debian dot org
2022-08-09 13:00 ` ubizjak at gmail dot com
2022-08-09 13:03 ` malat at debian dot org
2022-08-09 13:04 ` marxin at gcc dot gnu.org
2022-08-09 13:05 ` malat at debian dot org [this message]
2022-08-09 13:11 ` [Bug tree-optimization/106322] [12/13 Regression] tree-vectorize: Wrong code at O2 level (-fno-tree-vectorize is working) since r12-2404-ga1d27560770818c5 marxin at gcc dot gnu.org
2022-08-09 13:12 ` marxin at gcc dot gnu.org
2022-08-09 13:26 ` linkw at gcc dot gnu.org
2022-08-09 13:29 ` marxin at gcc dot gnu.org
2022-08-09 13:30 ` malat at debian dot org
2022-08-09 13:34 ` malat at debian dot org
2022-08-09 13:40 ` linkw at gcc dot gnu.org
2022-08-09 13:48 ` rguenth at gcc dot gnu.org
2022-08-09 13:53 ` malat at debian dot org
2022-08-09 13:56 ` malat at debian dot org
2022-08-09 14:01 ` malat at debian dot org
2022-08-09 15:28 ` pinskia at gcc dot gnu.org
2022-08-10  5:25 ` linkw at gcc dot gnu.org
2022-08-10  5:34 ` linkw at gcc dot gnu.org
2022-08-10  6:03 ` pinskia at gcc dot gnu.org
2022-08-10  6:24 ` linkw at gcc dot gnu.org
2022-08-10  9:47 ` linkw at gcc dot gnu.org
2022-08-10 12:32 ` rguenth at gcc dot gnu.org
2022-08-10 12:36 ` rguenth at gcc dot gnu.org
2022-08-11  1:18 ` linkw at gcc dot gnu.org
2022-08-15  6:51 ` linkw at gcc dot gnu.org
2022-08-16  5:50 ` cvs-commit at gcc dot gnu.org
2022-08-24  2:31 ` [Bug tree-optimization/106322] [12 " cvs-commit at gcc dot gnu.org
2022-08-24  2:53 ` linkw at gcc dot gnu.org
2022-08-24  6:51 ` rguenth at gcc dot gnu.org
2022-09-27 14:14 ` malat at debian dot org
2022-09-27 14:18 ` malat at debian dot org
2022-09-28  6:11 ` malat at debian dot org
2022-09-28  6:26 ` linkw at gcc dot gnu.org

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