Compiler Design Gate Smashers -

"If K colors are enough, program runs on K registers. If not – spilling to memory."

Happy Smashing, and best of luck for GATE 2025/2026! compiler design gate smashers

: Produces a platform-independent code (e.g., Three-Address Code). Code Optimization "If K colors are enough, program runs on K registers

: The compiler creates an abstract, machine-independent representation of the code, which serves as a bridge for further optimization. Code Optimization : The compiler creates an abstract,

| Phase | Input → Output | Key Concept | |-------|----------------|--------------| | Lexical | Source code → Tokens | RE, NFA/DFA, Lex tool | | Syntax | Tokens → Parse Tree | CFG, Parsing (LL/LR) | | Semantic | Parse Tree → Annotated Tree | Type checking, SDT | | Intermediate | Annotated Tree → 3-address code | TAC, DAG, 3AC | | Optimization | TAC → Optimized TAC | Constant folding, dead code | | Code Gen | Optimized TAC → Target code | Register allocation, instruction selection |