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From: "zsojka at seznam dot cz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/112740] [14 Regression] wrong code with vector compare
 on riscv64 at -O0
Date: Thu, 30 Nov 2023 08:17:22 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D112740

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> ---
(In reply to Andrew Pinski from comment #2)
> Does this work post:
> https://gcc.gnu.org/pipermail/gcc-cvs/2023-November/394162.html
>=20
> ?
>=20
> If so I will commit a testcase.

thank you for checking

Assuming this should have been fixed in r14-5938, it is still failing for me
with r14-5940 and r14-5986:
$ riscv64-unknown-linux-gnu-gcc testcase.c -static
$ ./a.out
Aborted

The value of x[0] is "ffff...ffff".

It is FAILing on: aarch64-unknown-linux-gnu, mips64el-unknown-linux-gnuabi6=
4,
riscv64-unknown-linux-gnu
And PASSing on: x86_64-pc-linux-gnu, powerpc64le-unknown-linux-gnu

$ riscv64-unknown-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=3D/repo/gcc-trunk/binary-latest-riscv64/bin/riscv64-unknown-lin=
ux-gnu-gcc
COLLECT_LTO_WRAPPER=3D/repo/gcc-trunk/binary-trunk-r14-5940-20231128183456-=
g3d104d93a70-checking-yes-rtl-df-extra-riscv64/bin/../libexec/gcc/riscv64-u=
nknown-linux-gnu/14.0.0/lto-wrapper
Target: riscv64-unknown-linux-gnu
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 --with-isa-spec=3D2.2
--with-sysroot=3D/usr/riscv64-unknown-linux-gnu --build=3Dx86_64-pc-linux-g=
nu
--host=3Dx86_64-pc-linux-gnu --target=3Driscv64-unknown-linux-gnu
--with-ld=3D/usr/bin/riscv64-unknown-linux-gnu-ld
--with-as=3D/usr/bin/riscv64-unknown-linux-gnu-as --disable-multilib
--disable-libstdcxx-pch
--prefix=3D/repo/gcc-trunk//binary-trunk-r14-5940-20231128183456-g3d104d93a=
70-checking-yes-rtl-df-extra-riscv64
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 14.0.0 20231128 (experimental) (GCC)=