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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/110817] New: [14 Regression] wrong code with
 vector compares on multiple targets
Date: Wed, 26 Jul 2023 15:42:18 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: tree-optimization
X-Bugzilla-Version: 14.0
X-Bugzilla-Keywords: wrong-code
X-Bugzilla-Severity: normal
X-Bugzilla-Who: zsojka at seznam dot cz
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110817

            Bug ID: 110817
           Summary: [14 Regression] wrong code with vector compares on
                    multiple targets
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz
  Target Milestone: ---
              Host: x86_64-pc-linux-gnu
            Target: riscv64-unknown-linux-gnu

Created attachment 55639
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=3D55639&action=3Dedit
reduced testcase

Output:
$ aarch64-unknown-linux-gnu-gcc -O testcase.c -static && ./a.out
$ x86_64-pc-linux-gnu-gcc -O testcase.c -static && ./a.out
$ armv7a-hardfloat-linux-gnueabi-gcc -O testcase.c -static && ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ mips64el-unknown-linux-gnuabi64-gcc -O testcase.c -static && ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ mipsel-unknown-linux-gnu-gcc -O testcase.c -static && ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ powerpc64-unknown-linux-gnu-gcc -O testcase.c -static && ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ powerpc64le-unknown-linux-gnu-gcc -O testcase.c -static && ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ powerpc-unknown-linux-gnu-gcc -O testcase.c -static && ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted
$ riscv64-unknown-linux-gnu-gcc -O testcase.c -static && ./a.out
qemu: uncaught target signal 6 (Aborted) - core dumped
Aborted

armv7a-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=3D/repo/gcc-trunk/binary-latest-armv7a-hardfloat/bin/armv7a-har=
dfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=3D/repo/gcc-trunk/binary-trunk-20230726115220-g819f3d36=
92c-checking-yes-rtl-df-extra-sanitizer-armv7a-hardfloat/bin/../libexec/gcc=
/armv7a-hardfloat-linux-gnueabi/14.0.0/lto-wrapper
Target: armv7a-hardfloat-linux-gnueabi
Configured with: /repo/gcc-trunk//configure --enable-languages=3Dc,c++
--enable-valgrind-annotations --disable-nls --enable-checking=3Dyes,rtl,df,=
extra
--with-cloog --with-ppl --with-isl --enable-libsanitizer --with-float=3Dhard
--with-fpu=3Dvfpv4 --with-arch=3Darmv7-a
--with-sysroot=3D/usr/armv7a-hardfloat-linux-gnueabi --build=3Dx86_64-pc-li=
nux-gnu
--host=3Dx86_64-pc-linux-gnu --target=3Darmv7a-hardfloat-linux-gnueabi
--with-ld=3D/usr/bin/armv7a-hardfloat-linux-gnueabi-ld
--with-as=3D/usr/bin/armv7a-hardfloat-linux-gnueabi-as --disable-libstdcxx-=
pch
--prefix=3D/repo/gcc-trunk//binary-trunk-20230726115220-g819f3d3692c-checki=
ng-yes-rtl-df-extra-sanitizer-armv7a-hardfloat
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20230726 (experimental) (GCC)=20

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