too long lines were shrinked: [1018/1151] /usr/lib/llvm/18/bin/clang++ -DGLSLANG_IS_SHARED_LIBRARY=1 -Dncnn_EXPORTS -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src/layer/x86 -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410_build/src -I/ [1019/1151] /usr/lib/llvm/18/bin/clang++ -DGLSLANG_IS_SHARED_LIBRARY=1 -Dncnn_EXPORTS -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src/layer/x86 -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410_build/src -I/ [1020/1151] /usr/lib/llvm/18/bin/clang++ -DGLSLANG_IS_SHARED_LIBRARY=1 -Dncnn_EXPORTS -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src/layer/x86 -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410_build/src -I/ [1021/1151] /usr/lib/llvm/18/bin/clang++ -DGLSLANG_IS_SHARED_LIBRARY=1 -Dncnn_EXPORTS -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src/layer/x86 -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410_build/src -I/ FAILED: src/CMakeFiles/ncnn.dir/layer/x86/cast_x86_avx512bf16.cpp.o /usr/lib/llvm/18/bin/clang++ -DGLSLANG_IS_SHARED_LIBRARY=1 -Dncnn_EXPORTS -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src/layer/x86 -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410/src -I/var/tmp/portage/dev-libs/ncnn-20240410/work/ncnn-20240410_build/src -I/var/tmp/port fatal error: error in backend: Cannot select: 0x55baeee49f40: v32bf16 = insert_subvector 0x55baeedb53d0, 0x55baeee91160, Constant:i64<16> 0x55baeedb53d0: v32bf16 = insert_subvector undef:v32bf16, 0x55baeee4a3a0, Constant:i64<0> 0x55baeee91080: v32bf16 = undef ------------------------------------------------------------------- This is an unstable amd64 chroot image at a tinderbox (==build bot) name: 23.0_llvm-20240411-061503 ------------------------------------------------------------------- CC=clang CXX=clang++ gcc-config -l: [1] x86_64-pc-linux-gnu-13 * clang/llvm (if any): clang version 18.1.3+libcxx Target: x86_64-pc-linux-gnu Thread model: posix InstalledDir: /usr/lib/llvm/18/bin Configuration file: /etc/clang/x86_64-pc-linux-gnu-clang.cfg /usr/lib/llvm/18 18.1.3+libcxx Python 3.11.9 Available Ruby profiles: [1] ruby31 (with Rubygems) [2] ruby33 (with Rubygems) * Available Rust versions: [1] rust-bin-1.77.1 * The Glorious Glasgow Haskell Compilation System, version 9.0.2 php cli (if any): go version go1.22.2 linux/amd64 HEAD of ::gentoo commit 2c7c126d1935edad0e877713effb0835d0b70789 Author: Repository mirror & CI <repomirrorci@gentoo.org> Date: Fri Apr 12 15:49:18 2024 +0000 2024-04-12 15:49:17 UTC emerge -qpvO dev-libs/ncnn [ebuild N ] dev-libs/ncnn-20240410 USE="openmp tools vulkan"
Created attachment 890524 [details] emerge-info.txt
Created attachment 890525 [details] dev-libs:ncnn-20240410:20240412-162707.log.xz
Created attachment 890526 [details] emerge-history.txt
Created attachment 890527 [details] environment
Created attachment 890528 [details] etc.clang.tar.xz
Created attachment 890529 [details] etc.portage.tar.xz
Created attachment 890530 [details] qlist-info.txt
Created attachment 890531 [details] temp.tar.xz
Created attachment 890532 [details] var.tmp.clang.tar.xz
Re-assigning to llvm@ given clang crashed and seems it is a clang-18 regression (can't reproduce with 17.0.6, but can with 18.1.3) Also happens when building older ncnn, so this is not related to the new version. I'll check if I can figure out a temporary workaround for the ncnn ebuild meanwhile.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=caaafbb24b1124c87255ce52747f6a5f45a2651b commit caaafbb24b1124c87255ce52747f6a5f45a2651b Author: Ionen Wolkens <ionen@gentoo.org> AuthorDate: 2024-04-12 19:30:00 +0000 Commit: Ionen Wolkens <ionen@gentoo.org> CommitDate: 2024-04-12 19:36:00 +0000 dev-libs/ncnn: disable avx512bf16 code path with >=clang-18 for now clang-18 itself crashes otherwise. wrt bug #929228, please remember to override this workaround to reproduce, aka: MYCMAKEARGS="-DNCNN_AVX512BF16=ON" Bug: https://bugs.gentoo.org/929228 Signed-off-by: Ionen Wolkens <ionen@gentoo.org> dev-libs/ncnn/ncnn-20240102-r1.ebuild | 4 ++++ dev-libs/ncnn/ncnn-20240410.ebuild | 4 ++++ 2 files changed, 8 insertions(+)
