Function LLVMBuildSelect 

#[unsafe(no_mangle)]
pub extern "C" fn LLVMBuildSelect(
    arg1: LLVMBuilderRef,
    If: LLVMValueRef,
    Then: LLVMValueRef,
    Else: LLVMValueRef,
    Name: *const c_char,
) -> LLVMValueRef