Teknik Kompilasi I 1/45 Ernastuti & Sulistyo TEKNIK KOMPILASI Ernastuti & Sulistyo
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TEKNIK KOMPILASI
Ernastuti & Sulistyo
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MATERI
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ARTI KATA TEKNIK KOMPILASI
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TRANSLATOR:COMPILER & INTERPRETER
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COMPILER & INTERPRETER
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COMPILER
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KENAPA PERLU TRANSLATOR ?
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LATAR BELAKANG
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Bagaimana dengan orang yang tidakmengerti bahasa mesin?
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BAHASA TINGKAT TINGGI
Pemrograman bisa menggunakan Bahasa Tingkat Tinggi.
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Bahasa Tingkat Tinggi adalah:
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Jenis Translator: ASSEMBLER
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Jenis Translator: COMPILER
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Jenis Translator: Interpreter
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Why study compilers?Most CS students do not go on to write a commercial compiler someday, but that's not why we study compilers. We study compiler construction for the following reasons:
Writing a compiler gives experience with large-scale applications development. Your compiler program may be the largest program you write as a student. Experience working with really big data structures and complex interactions between algorithms will helpyou out on your next big programming project.
Compiler writing is one of the shining triumphs of CS theory. Itdemonstrates the value of theory over the impulse to just "hack up" a solution.
Compiler writing is a basic element of programming language research. Many language researchers write compilers for the languages they design.
Many applications have similar properties to one or more phases of a compiler, and compiler expertise and tools can help an application programmer working on other projects besides compilers.
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There is no software development method for writing large programs that doesn't involve pain: pain is inevitable in software development (Berry's Theorem).
There is no way to learn the skills necessary for writing big programs without pain. A good CS course includes pain, and teaches pain management and minimization.
The questions we should ask, then, are:
(a) should CS majors be required to spend a lot of time becoming really good programmers? (b) are we providing students with the assistance and access to the tools and information they need to accomplish their goals with the minimal doses of inevitable pain that are required?
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What Are They and What Kinds of Compilers are Out There?
• The purpose of a compiler is:to translate a program in some language (the source language) into a lower-level language (the target language).
The compiler itself is written in some language, called the implementation language.
To write a compiler you have to be very good at programming in the implementation language, and have to think about and understand the source language and target language.
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Several major kinds of compilersNative Code CompilerTranslates source code into hardware (assembly or machine code) instructions. Example: gcc.
Virtual Machine CompilerTranslates source code into an abstract machine code, for execution by a virtual machine interpreter. Example: javac.
JIT Compiler Translates virtual machine code to native code. Operates within a virtual machine. Example: Sun's HotSpot java machine.
PreprocessorTranslates source code into simpler or slightly lower level source code, for compilation by another compiler. Examples: cpp, m4.
Pure interpreterExecutes source code on the fly, without generating machine code. Example: Lisp.
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Phases of a CompilerLexical Analysis:
Converts a sequence of characters into words, or tokens
Syntax Analysis:Converts a sequence of tokens into a parse tree
Semantic Analysis:Manipulates parse tree to verify symbol and type information
Intermediate Code Generation:Converts parse tree into a sequence of intermediate code instructions
Optimization:Manipulates intermediate code to produce a more efficient program
Final Code Generation:Translates intermediate code into final (machine/assembly) code
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PenganalisaLeksikal
(scanner)
PenganalisaSintaks(parser)
PenganalisaSemantik
PembangkitKode antara
Pembentukkode
Pengoptimalkode
ProgramSumber
ProgramSumber
ProgramSasaranProgramSasaran
TABELSIMBOLTABEL
SIMBOL
ANALISA SINTESA
Bagan pokok proses kompilasi
Blok Diagram
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Contoh Source Program ke dalam Kode Mesin:
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Contoh Source Program ke dalam Kode Mesin
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Konsep dan Notasi Bahasa
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Konsep dan Notasi Bahasa
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Konsep dan Notasi Bahasa
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Contoh Tata Bahasa Sederhana
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Tabel Aturan Produksi
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Hirarki CHOMSKY
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ATURAN PRODUKSI
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DIAGRAM STATE
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Notasi BNF (Backus Normal Form)
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DIAGRAM SYNTAX
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DIAGRAM SYNTAX
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Kualitas dari Compiler:
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Lanjut ke TEKNIK KOMPILASI II.ppt