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Compilation Principle Three-Address Code[ 三地址码] High-level assembly where each operation has at most three operands Generic form is X = Y op Z[ 最多3 个操作数] − where X, Y, Z can be variables, constants, or compiler-generated temporaries holding intermediate values Characteristics[ 特性] − Assembly code for an ‘abstract machine’ − Long expressions are converted to multiple instructions
幻灯片 1 - GitHub Pages 任课老师:谢晓园邮箱:xxie@whu edu cn 办公室:计算机学院E301助教:黎源邮箱:1445660426@qq com
Microsoft Word - hw4_sol. docx - GitHub Pages Q2: (p323, Exercises 5 3 1) Below is a grammar for expressions involving operator + and integer of floating-point operands Floating-point numbers are distinguished by having a decimal point:
Microsoft Word - hw2_sol. docx - GitHub Pages Q2: (p216, Exercise 4 3 1) The following is a grammar for regular expressions over symbols a and b only, using + in place of | for union, to avoid conflict with the use of vertical bar as a metasymbol in grammars:
Compilation Principle - arcSYSu Derivations and parse trees: many-to-one relationship − Leftmost derivation order: builds tree left to right − Rightmost derivation order: builds tree right to
《编译原理》课程期中考试试卷 - GitHub Pages [A] the parse tree corresponding to the left-most derivation must be the same to that of the right-most derivation