Why compilers require more memory?

Compilers require more memory because they need to store various intermediate representations of the source code, such as abstract syntax trees and symbol tables, which are essential for analyzing and optimizing the code. Additionally, compilers often include multiple phases, such as lexical analysis, parsing, semantic analysis, and code generation, each of which demands its own data structures and memory allocation. Furthermore, optimizations can lead to increased memory usage as the compiler keeps track of additional information to enhance the final output.