A quick view into a compiler
summary
A compact tour moves from source text through preprocessor-lexer-parser-analyzer into an AST then an IR, describes the middle end running dozens of passes and shows a concrete optimization: constant folding to 15 when 5+10 are known at compile time, then the backend mapping IR to real instructions, doing register allocation and spilling, instruction scheduling, assembling and linking into object code, and notes which steps are machine-independent versus machine-dependent.
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chapters (4)
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