-march=armv8-a in compile_commands.json breaks Clang's code model

In Android P many generated compile commands has -march=armv8-a. This flag seems to break libclang's parsing. When I manually remove -march=armv8-a from compile_commands.json, the code model works again.

Expected:
Sources with highlighted syntax, warnings, code completion.

Actual:
Nothing of the above.