Function thinlto_codegen_set_cache_size_megabytes

pub unsafe extern "C" fn thinlto_codegen_set_cache_size_megabytes(
    cg: thinlto_code_gen_t,
    max_size_megabytes: c_uint,
)

Same as thinlto_codegen_set_cache_size_bytes, except the maximum size is in megabytes (2^20 bytes).