On Tue, Aug 18, 2020 at 03:39:12PM -0700, Andrii Nakryiko wrote: > This patch set adds libbpf support to two new classes of CO-RE relocations: > type-based (TYPE_EXISTS/TYPE_SIZE/TYPE_ID_LOCAL/TYPE_ID_TARGET) and enum > value-vased (ENUMVAL_EXISTS/ENUMVAL_VALUE): > > LLVM patches adding these relocation in Clang: > - __builtin_btf_type_id() ([0], [1], [2]); > - __builtin_preserve_type_info(), __builtin_preserve_enum_value() ([3], > [4]).
I've applied patches 1-4, since they're somewhat indepedent of new features in 5+. What should be the process to land the rest? Land llvm first and add to bpf/README.rst that certain llvm commmits are necessary to build the tests? But CI will start failing. We can wait for that to be fixed, but I wonder is there way to detect new clang __builtins automatically in selftests and skip them if clang is too old?
