Source Code Analysis Tools Quiz

The main purpose of the first pass in a compiler is to analyze the high-level language and convert it into three-address code, which is platform-independent.

The second pass is referred to as the back-end or synthesis part and is platform-dependent. It includes the code optimization and code generator phases, which take the three-address code from the first pass and convert it into low-level language or assembly language for the specific target system.

Parser generators are specialized tools that help implement the syntax analyzer phase of a compiler. They produce the syntax analyzer, normally from input based on a context-free grammar, and they consume a large fraction of the running time of a compiler.

<p>The front-end of a compiler, which includes the first pass, is responsible for analyzing the high-level language and converting it into an intermediate representation (three-address code). The back-end, or second pass, is responsible for taking the intermediate representation and generating the final executable code for the target platform.</p> Signup and view all the answers

<p>The first pass of a compiler is considered platform-independent because the output of this pass is the three-address code, which is a useful intermediate representation for any target system. The requirement to change the code optimization and code generator phases is part of the second pass, which is platform-dependent.</p> Signup and view all the answers

<p>The code optimization phase in the second pass of a compiler is responsible for improving the efficiency of the generated code, such as by removing redundant operations, performing constant folding, and other optimizations.</p> Signup and view all the answers

<p>The intermediate code generator is part of the first pass (front-end) of the compiler and is responsible for converting the high-level language into the platform-independent three-address code. The code generator, on the other hand, is part of the second pass (back-end) and is responsible for converting the three-address code into the final executable code for the target platform.</p> Signup and view all the answers

<p>The semantic analyzer phase in the first pass of a compiler is responsible for checking the meaning and correctness of the input program, ensuring that the language constructs are used correctly and that the program is semantically valid.</p> Signup and view all the answers

<p>The synthesis part in the second pass of a compiler is responsible for taking the three-address code generated in the first pass and converting it into the final low-level language or assembly language for the target platform.</p> Signup and view all the answers

<p>The second pass of a compiler is considered platform-dependent because the final stage of the compiler converts the intermediate representation of the program (three-address code) into an executable set of instructions, which is dependent on the target system and its hardware and software architecture.</p> Signup and view all the answers