A RETARGETABLE C COMPILER DESIGN AND IMPLEMENTATION PDF

How to Obtain ICC. Working programmers use compilers every day and count heavily on their correctness and reliability. A compiler must accept the standard definition of the programming language so that source code will be portable across platforms. A compiler must generate efficient object code. Perhaps more important, a compiler must generate correct object code; an application is only as reliable as the compiler that compiled it. A compiler is itself a large and complex application that is worthy of study in its own right.

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How to Obtain ICC. Working programmers use compilers every day and count heavily on their correctness and reliability. A compiler must accept the standard definition of the programming language so that source code will be portable across platforms.

A compiler must generate efficient object code. Perhaps more important, a compiler must generate correct object code; an application is only as reliable as the compiler that compiled it. A compiler is itself a large and complex application that is worthy of study in its own right.

It is to compiling what Software Tools by B. Kernighan and P. Plauger Addison-Wesley, is to text processing like text editors and macro processors.

Software design and implementation are best learned through experience with real tools. This book explains in detail and shows most of the code for a real compiler. The accompanying diskette holds the source code for the complete compiler. Detailing most of a production compiler in a book leaves little room for supporting material, so we present only the theory needed for the implementation at hand and leave the broad survey of compiling techniques to existing texts.

The book omits a few language features--those with mundane or repetitive implementations and those deliberately treated only in the exercises--but the full compiler is available on the diskette, and the book makes it understandable. The obvious use for this book is to learn more about compiler construction. But only few programmers need to know how to design and implement compilers. Most work on applications and other aspects of systems programming.

There are four reasons why this majority of C programmers may benefit from this book. First, programmers who understand how a C compiler works are often better programmers in general and better C programmers in particular. The compiler writer must understand even the darkest corners of the C language; touring the implementation of those corners reveals much about the language itself and its efficient realization on modern computers.

Second, most texts on programming must necessarily use small examples, which often demonstrate techniques simply and elegantly. Most programmers, however, work on large programs that have evolved--or degenerated--over time.

There are few well documented examples of this kind of "programming in the large" that can serve as reference examples. Third, a compiler is one of the best demonstrations in computer science of the interaction between theory and practice. Exploring these interactions in a real program helps programmers understand when, where, and how to apply different techniques. Fourth, this book is an example of a "literate program.

The code is presented in the order that best suits understanding, not in the order dictated by the C programming language. This book is well suited for self-study by both academics and professionals. The book and its diskette offer complete documented source code for lcc, so they may interest practitioners who wish to experiment with compilation or those working in application areas that use or implement language-based tools and techniques, such as user interfaces.

The book shows a large software system, warts and all. It could thus be the subject of a postmortem in a software engineering course, for example.

For compiler courses, this book complements traditional compiler texts. It shows one way of implementing a C compiler, while traditional texts survey algorithms for solving the broad range of problems encountered in compiling.

Limited space prevents such texts from including more than a toy compiler. Code generation is often treated at a particularly high level to avoid tying the book to a specific computer. As a result many instructors prepare a substantial programming project to give their students some practical experience. These instructors usually must write these compilers from scratch; students duplicate large portions and have to use the rest with only limited documentation.

The situation is trying for both students and instructors, and unsatisfying to boot, because the compilers are still toys. By documenting most of a real compiler and providing the source code, this book offers an alternative. It exploits recent research that produces code generators from compact specifications. These methods allow us to present complete code generators for several machines, which no other book does. Presenting several code generators avoids tying the book to a single machine, and helps students appreciate engineering retargetable software.

Assignments can add language features, optimizations, and targets. When used with a traditional survey text, assignments could also replace existing modules with those using alternate algorithms. Such assignments come closer to the actual practice of compiler engineering than assignments that implement most of a toy compiler, where too much time goes to low-level infrastructure and accommodating repetitive language features.

Many of the exercises pose just these kinds of engineering problems. It could also be used to experiment with language extensions, proposed computer architectures and code-generator technologies. We assume readers are fluent in C and assembly language for some computer, know what a compiler is and have a general understanding of what one does, and have a working understanding of data structures and algorithms at the level covered in typical undergraduate courses; the material covered by Algorithms in C by R.

Sedgewick Addison-Wesley, , for example, is more than sufficient for understanding lcc. Our thanks to Steve Beck, who installed and massaged the fonts used for this book, and to Maylee Noah, who did the artwork with Adobe Illustrator. Christopher W.

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A Retargetable C Compiler: Design and Implementation

And while most books describe toy compilers or focus on isolated pieces of code, the authors have made available the entire source code for a real compiler. Structured as a self-study guide that describes the real-world tradeoffs encountered in building a production-quality compiler, A Retargetable C Compiler is also useful to individuals who work in application areas using or creating language-based tools and techniques. Features: discusses the implementation and design tradeoffs made while constructing a real ANSI C compiler, illustrating the interaction between theory and practice; covers compiler theory only as needed to understand the implementation of Icc, focusing instead on practical, applied issues; encourages a deeper understanding of programming in C, by providing C programmers with a tour of the language from the perspective of compiler authors; includes coverage of code generators for the MIPS R, SPARC, and Intel and its successors; and provides access to the full source code for the Icc compiler, the three back ends, and the code-generator generator, either on disk or via FTP.

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ISBN 13: 9780805316704

And while most books describe toy compilers or focus on isolated pieces of code, the authors have made available the entire source code for a real compiler. Structured as a self-study guide that describes the real-world tradeoffs encountered in building a production-quality compiler, A Retargetable C Compiler is also useful to individuals who work in application areas using or creating language-based tools and techniques. Features: discusses the implementation and design tradeoffs made while constructing a real ANSI C compiler, illustrating the interaction between theory and practice; covers compiler theory only as needed to understand the implementation of Icc, focusing instead on practical, applied issues; encourages a deeper understanding of programming in C, by providing C programmers with a tour of the language from the perspective of compiler authors; includes coverage of code generators for the MIPS R, SPARC, and Intel and its successors; and provides access to the full source code for the Icc compiler, the three back ends, and the code-generator generator, either on disk or via FTP. Working programmers use compilers every day and count heavily on their correctness and reliability. A compiler must accept the standard definition of the programming language so that source code will be portable across platforms.

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