Block records are not processed; only the bitcode is validated.
-- v8: vkd3d-shader/dxil: Read and validate global abbreviated operands. vkd3d-shader/dxil: Read and validate local abbreviated operands. vkd3d-compiler: Introduce dxbc-dxil and dxbc-auto source types. vkd3d-shader/dxbc: Introduce an option to autodetect the DXBC source type. vkd3d-shader/dxil: Read and validate DXIL bitcode unabbreviated blocks.