这是编译原理的源代码，涉及了编译原理的各个过程：词法分析，LL1语法分析，语义分析，中间代码生成，中间代码优化（常表达式优化，公共表达式优化，循环不变式优化），中间代码生成目标代码，目标代码的解释执行行行，详细地阐述了一个编译器的设计与实现。它是大纲教学，课程设计良好的示范，也是编程与开发爱好者提高的好参考，其中这是中间代码生成部分。-This is the source code of the compiler theory, involving the various compiler theory: lexical analysis, LL1 parsing, semantic analysis, intermediate code generation, intermediate code optimization (regular expression optimization, public expression optimization, loop invariant optimization) The intermediate code generated object code, object code to explain the implementation of all actions detailed descr iption of the design and implementation of a compiler. It is the outline of teaching, a good example of curriculum design, programming and development enthusiasts improve a good reference, which is the intermediate code generation part. Opened my account as soon as possible, to interact and become good friends who love programming and development