Question

Advantage and disadvantage of single pass and multipass compiler

Answer 1

Disadvantages. One-pass compilers are unable to generate as efficient programs as multi-pass compilers due to the limited scope of available information. ... Some require passes over an entire program. Some programming languages simply cannot be compiled in a single pass

Answer 2

Single pass Compiler :

Advantage:  More efficient than multi pass compilers in the compiler phase.

Disadvantage:   Produces less efficient programs.

Multi pass Compiler :

Advantages:   Can be useful when optimizing code.

Disadvantages:   Slower at compile time