CSC373-Compiler Construction
Week-1 Lecture-2
Semester-#5 FALL 2019
Prepared by:
Eisha Tir Razia
Lahore Garrison University
1
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Compiler Construction: Cousins of the Compiler, Properties, and Interpreters, Assignments of Compiler Construction
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CSC373-Compiler Construction Week-1 Lecture- Semester-#5 FALL 2019 Prepared by: Eisha Tir Razia Lahore Garrison University
Instructor Contact Details
(^) Instructor Name: Eisha Tir Razia (^) Course : CSC373- Compiler Construction (^) Credit Hours: 3 (^) Office Location: CS-Female Staff Room (^) Email: [email protected] (^) Visiting Hours: Tuesday 11:00 am to 12:00 pm
Preprocessor
(^) A source program may be divided into modules stored in separate files. The task of collecting the source program is sometimes entrusted to a separate program, called a preprocessor. The preprocessor may also expand shorthands, called macros, into source language statements
Assembler
(^) The modified source program is then fed to a compiler. The compiler may produce an assembly-language program as its output, because assembly language is easier to produce as output and is easier to debug. The assembly language is then processed by a program called an assembler that produces relocatable machine code as its output
Loader
(^) The loader then puts together all of the executable object files into memory for execution
Cont..
Properties of Compiler
(^) Compiler itself must be bug-free (^) Machine code is generated in correct form (^) Generated machine code must run fast. (^) Compiler itself must run fast (^) Compiler must be portable (^) It must gives good diagnostics error messages (^) The generated code must work well (^) It must have consistent optimization
Interpreter
Interpreter is a program that appears to execute a source
program as if it were machine language.
References
Compilers: Principles, Techniques, and Tools By Alfred V. Aho, Ravi Sethi, Jeffrey D. Ullman, Contributor Jeffrey D. Ullman, Addison-Wesley Pub. Co., 2nd edition, 2006