Computers as Components, 2nd Edition

5.4 Basic Compilation Techniques 229

5.4.1 Statement Translation

In this section, we consider the basic job of translating the high-level language

program with little or no optimization. Let’s first consider how to translate an expres-

sion. A large amount of the code in a typical application consists of arithmetic and

logical expressions. Understanding how to compile a single expression,as described

in Example 5.2,is a good first step in understanding the entire compilation process.

Example 5.2

Compiling an arithmetic expression

In the following arithmetic expression,

a*b + 5*(c – d)

the variable is written in terms of program variables. In some machines ...