yonghong-song wrote: With this pull request, I tried to build linux kernel and kernel bpf selftest and run the selftest, and didn't find any issues. So presumably the implementation is correct.
I tried a particular kernel bpf selftest: https://github.com/torvalds/linux/blob/master/tools/testing/selftests/bpf/progs/test_tunnel_kern.c#L39-L42 which has a few bitfield usages. The generated code is the same with or without this change. The bitfield patterns in the above test_tunnel_kern.c is pretty typical in kernel which is pro aligned bitfields. This patch tries to handle some cases better for not-commonly-used bitfield patterns, those patterns (like the one in the pull request summary) are very rare in bpf program or kernel, so I guess it should have minimum impact on BPF backend. https://github.com/llvm/llvm-project/pull/65742 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
