Table of Contents
- 1 What are the types of intermediate code representation?
- 2 What is intermediate form of the code?
- 3 Why is intermediate code needed?
- 4 Which of the following is not intermediate code?
- 5 What is basic principle of Variant II of intermediate code?
- 6 Which phase of the compiler removes empty line from the high-level code?
- 7 Which is the best definition of an intermediate representation?
- 8 How is intermediate code represented in source code?
What are the types of intermediate code representation?
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 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 the representation of three address code?
Three address code is a type of intermediate code which is easy to generate and can be easily converted to machine code.It makes use of at most three addresses and one operator to represent an expression and the value computed at each instruction is stored in temporary variable generated by compiler.
What are the two variants of intermediate code?
The two intermediate code variants differ based on the information that is provided in their operand fields. In Variant 1 intermediate code, the first operand is a single digit number that usually represents a register code. In some cases, the register code is replaced by a condition code.
Why is intermediate code needed?
Intermediate code eliminates the need of a new full compiler for every unique machine by keeping the analysis portion same for all the compilers. The second part of compiler, synthesis, is changed according to the target machine.
Which of the following is not intermediate code?
Quadruples is not the intermediate code form.
Why is intermediate code used?
Intermediate code is used to translate the source code into the machine code. Intermediate code lies between the high-level language and the machine language.
What is type checking in compiler design?
A compiler must check that the source program follows both syntactic and semantic conventions of the source language. This checking, called static checking, detects and reports programming errors.
What is basic principle of Variant II of intermediate code?
VARIANT 2 :- 1) Variant 2 will be same for AD and DL. Only for IS the first operand is written as it is. For second operand only for literal they follow VARIANT format, rest all is written as it is from input.
Which phase of the compiler removes empty line from the high-level code?
Compiler Design – Lexical Analysis. Lexical analysis is the first phase of a compiler. It takes the modified source code from language preprocessors that are written in the form of sentences. The lexical analyzer breaks these syntaxes into a series of tokens, by removing any whitespace or comments in the source code.
What is intermediate code what type of intermediate code is used in compiler?
Intermediate Code : Intermediate Code are machine independent code, but they are close to machine instruction. Syntax tree, Postfix notation, 3-address code, DAG can be used as intermediate language.
Which type of error compiler can check?
9. A compiler can check? Explanation: No compiler can ever check logical errors.
Which is the best definition of an intermediate representation?
For the use of the term in biology, see Transitional fossil. 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.
How is intermediate code represented in source code?
Intermediate code can be represented in two ways: 1. High Level intermediate code: High level intermediate code can be represented as source code. To enhance performance of source code, we can easily apply code modification. But to optimize the target machine, it is less preferred. 2. Low Level intermediate code
Why do we use intermediate representations in compilers?
An intermediate representation is a representation of a program “between” the source and target languages. A good IR is one that is fairly independent of the source and target languages, so that it maximizes its ability to be used in a retargetable compiler. Why use an IR? We use intermediate representations for at least four reasons:
Why is an intermediate representation used in LLVM?
Intermediate representation. Use of an intermediate representation such as this allows compiler systems like the GNU Compiler Collection and LLVM to be used by many different source languages to generate code for many different target architectures .