Function LLVMOrcGetSymbolAddressIn 

pub unsafe extern "C" fn LLVMOrcGetSymbolAddressIn(
    JITStack: LLVMOrcJITStackRef,
    RetAddr: *mut LLVMOrcTargetAddress,
    H: LLVMOrcModuleHandle,
    SymbolName: *const c_char,
) -> LLVMErrorRef

Get symbol address from JIT instance, searching only the specified handle.