What is pass in compiler design?

Answer 1

There are two types of compilers one-pass and multi-pass. Pass means that some of inner operations are repeated several times.

If we have one-pass compiler and this source code:

i++;

i++;

i++;

Inside compiler it would generate:

i = i + 1;

i = i + 1;

i = i + 1;

If compiler would be two-pass:

i = i + 3;

The more passes compiler has, the better optimized code it can generate, but it is slower because it must repeat some steps again.

Answer 2

A pass in compiler design is the group of several phases of compiler to perform analysis or synthesis of source program?

two types of pass:-

1:-one pass

2:-two pass

In one pass structure both analysis and synthesis of source program is done in

tne flow from beginning to end of program.

In two pass structure analysis of source program is done in first pass and synthesis of source program is done in second pass?

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