Passes 06/24/2022 1 ANKUR SRIVASTAVA JETGI ASSISTANT PROFESSOR COMPILER DESIGN
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05/01/2023 1
Passes
ANKUR SRIVASTAVA JETGI ASSISTANT PROFESSOR COMPILER DESIGN
05/01/2023 ANKUR SRIVASTAVA JETGI ASSISTANT PROFESSOR COMPILER DESIGN
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Single Pass
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Contd.
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Two Pass
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Comparison
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Multi pass
• Passes 1. Several phases of compilers are grouped into passes. 2 . Other passes generates an explicit output file. 3. In each pass the whole input file/source is processed.
Syntax Analyser
Lexical analyser Intermediate code generator--Semantic analyser
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Contd…..
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Load and Go
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Contd….
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Debugging
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Bootstraping
• Bootstrapping is the process of writing a compiler (or assembler) in the source programming language that it intends to compile.
• Many compilers for many programming languages are bootstrapped, including compilers for-
• BASIC, Algol, C, D, Pascal, PL/I, Factor, Haskell, Modula-2, Oberon, OCaml, Common Lisp, Scheme, Go, Java, Rust, Python, Scala, Nim, Eiffel, and more.
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List Of Compilers• Compiler is program that translate (either from source code,
byte code to another source code, byte code, or binary), for example:
• gcc• clang• javac• go (compiler)
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• Interpreter is program that executes source code or byte code, for example:
• ruby (interpreter)• python (interpreter)• php (interpreter)
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CONTD…
• 1 Ada compilers• 2 ALGOL compilers• 3 Assemblers (Intel *86)• 4 Assemblers (Motorola 68*) • 5 Assemblers (Zilog Z80) • 6 Assemblers (other) • 7 BASIC Compilers