What is code generation phase in compiler design?

What is code generation phase in compiler design?

Code generation is the final stage of the compilation process. It takes the optimized intermediate code as input and maps it to the target machine language. Code generator translates the intermediate code into the machine code of the specified computer.

What is intermediate code generation in compiler construction?

Intermediate code generator receives input from its predecessor phase, semantic analyzer, in the form of an annotated syntax tree. That syntax tree then can be converted into a linear representation, e.g., postfix notation. Intermediate code tends to be machine independent code.

What is code generation algorithm?

A code-generation algorithm: The algorithm takes a sequence of three-address statements as input. For each three address statement of the form a:= b op c perform the various actions. These are as follows: Invoke a function getreg to find out the location L where the result of computation b op c should be stored.

What are different types of intermediate code?

Intermediate code can be represented in two ways:

• High Level intermediate code: High level intermediate code can be represented as source code.
• Low Level intermediate code. Low level intermediate code is close to the target machine, which makes it suitable for register and memory allocation etc.

How many types of intermediate codes are there?

The intermediate code can be represented in the form of postfix notation, syntax tree, directed acyclic graph (DAG), three-address code, quadruples, and triples.

Which is the final phase of compiler compilation?

Code generation can be considered as the final phase of compilation. Through post code generation, optimization process can be applied on the code, but that can be seen as a part of code generation phase itself. The code generated by the compiler is an object code of some lower-level programming language, for example, assembly language.

Which is part of compiler design code generation?

Compiler Design – Code Generation. Through post code generation, optimization process can be applied on the code, but that can be seen as a part of code generation phase itself. The code generated by the compiler is an object code of some lower-level programming language, for example, assembly language.

How is intermediate code generated in a compiler?

Intermediate code is between the high-level and machine level language. This intermediate code needs to be generated in such a manner that makes it easy to translate it into the target machine code. It should be generated from the semantic representation of the source program

When do errors occur in the compiler design process?

In the compiler design process error may occur in all the below-given phases: Most common errors are invalid character sequence in scanning, invalid token sequences in type, scope error, and parsing in semantic analysis. The error may be encountered in any of the above phases.