Contents
What are the three ways of intermediate representation?
Types of Intermediate Representations
- Structured (graph or tree-based)
- Flat, tuple-based, generally three-address code (quadruples)
- Flat, stack-based.
- Or any combination of the above three.
What is intermediate representation used?
An intermediate representation (IR) is the data structure or code used internally by a compiler or virtual machine to represent source code. An IR is designed to be conducive for further processing, such as optimization and translation.
What are intermediate representation forms?
Three-Address Code 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 are the various types of intermediate code representation explain?
The intermediate code can be represented in the form of postfix notation, syntax tree, directed acyclic graph (DAG), three-address code, quadruples, and triples.
What are the benefits of intermediate code generation?
Intermediate code eliminates the need of a new full compiler for every unique machine by keeping the analysis portion same for all the compilers. It becomes easier to apply the source code modifications to improve code performance by applying code optimization techniques on the intermediate code.
What is intermediate representation graph?
The intermediate representation is a graph-based, object-oriented structure, similar in spirit to an opera- tor-level Program Dependence Graph or Gated Single Assignment form [3, 11, 17, 18]. The final form con- tains all the information required to execute the pro- gram. The graph edges represent use-def chains.
What is intermediate form of the code?
An intermediate code form of source program is an internal form of a program created by the compiler while translating the program created by the compiler while translating the program from a high –level language to assembly code(or)object code(machine code).
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.
What is three address code explain with example?
Example-1: Convert the expression a * – (b + c) into three address code. It is structure with consist of 4 fields namely op, arg1, arg2 and result. op denotes the operator and arg1 and arg2 denotes the two operands and result is used to store the result of the expression. Easy to rearrange code for global optimization.