182. Conclusion and advance notice

5.13.5.3.2.4.3.          Conclusion and advance notice

From here on, RTL subtree will be constructed out of the intermediate tree, which is the important basis and starting point for assembler code generation. The back-end plays the key role in optimization based on RTL and assembler code emission. Its implementation has great difference from the front-end, which widely uses code generation tools. So, to go on, we first need to study these tools, see how is the code generated.