Thanks for the report. But I'm unable to reproduce the issue. I'm testing on a
Skylake-AVX512 system. I even did a clean rebuild of all of GCC using your
configuration (minus your prefix) and still no failure.
Could you please send me your libstdc++.log after failing the test?
Best,
Matthias
On Montag, 13. Mai 2024 18:55:13 MESZ haochen. jiang wrote:
> On Linux/x86_64,
>
> fb1649f8b4ad5043dd0e65e4e3a643a0ced018a9 is the first bad commit
> commit fb1649f8b4ad5043dd0e65e4e3a643a0ced018a9
> Author: Matthias Kretz <m.kr...@gsi.de>
> Date: Mon May 6 12:13:55 2024 +0200
>
> libstdc++: Use __builtin_shufflevector for simd split and concat
>
> caused
>
> FAIL: experimental/simd/pr109261_constexpr_simd.cc -msse2 -O2 -Wno-psabi
> (test for excess errors)
>
> with GCC configured with
>
> ../../gcc/configure
> --prefix=/export/users/haochenj/src/gcc-bisect/master/master/r15-429/usr
> --enable-clocale=gnu --with-system-zlib --with-demangler-in-ld
> --with-fpmath=sse --enable-languages=c,c++,fortran --enable-cet
> --without-isl --enable-libmpx x86_64-linux --disable-bootstrap
>
> To reproduce:
>
> $ cd {build_dir}/x86_64-linux/libstdc++-v3/testsuite && make check
> RUNTESTFLAGS="conformance.exp=experimental/simd/pr109261_constexpr_simd.cc
> --target_board='unix{-m32}'"
>
> (Please do not reply to this email, for question about this report, contact
> me at haochen dot jiang at intel.com.) (If you met problems with
> cascadelake related, disabling AVX512F in command line might save that.)
> (However, please make sure that there is no potential problems with
> AVX512.)
--
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Dr. Matthias Kretz https://mattkretz.github.io
GSI Helmholtz Center for Heavy Ion Research https://gsi.de
std::simd
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