Intermediate code generation is a phase in compiler construction that involves the transformation of the parsed and analyzed source code into an intermediate representation. The primary goals of intermediate code generation are to simplify subsequent analysis and optimizations. Key points include:
Intermediate Representation:
- Intermediate code is a low-level, platform-independent representation that captures the essential semantics of the source code.
Simplification of Syntax:
- The intermediate code represents a simplified and standardized syntax, making it easier to perform subsequent analysis and optimization phases.
Platform Independence:
- Intermediate code allows for platform-independent representation, facilitating portability across different target architectures.
Preparation for Optimization:
- The intermediate code serves as a basis for various optimization techniques that enhance the efficiency of the generated machine code.
Decomposition of Complex Structures:
- High-level language constructs are decomposed into simpler and more manageable forms in the intermediate code.
Transformation from AST:
- Often derived from the Abstract Syntax Tree (AST) obtained during the syntax analysis phase.
Serves as an Intermediate Step:
- Acts as an intermediate step between the front-end (lexical analysis, syntax analysis) and the back-end (code generation, optimization) of the compiler.
Intermediate code generation is a critical step in the compilation process, laying the groundwork for subsequent optimizations and the generation of efficient machine code tailored to the target architecture.