PPT-Theory of Compilation Lecture 07 – attribute grammars + intro to IR

Eran Yahav 1 2 You are here Executable code exe Source text txt Compiler Lexical Analysis Syntax Analysis Parsing Semantic Analysis Inter Rep IR Code Gen Last Week Types. Krishnaprasad Thirunarayan Metadata and Languages Laboratory Department of Computer Science and Engineering BACKGROUND Let G = (N, T, P, S) be a context-free grammar for a language L (Aho et t of Intro to IT. . COSC1078 Introduction to Information Technology. . Lecture 22. Internet Security. James Harland. james.harland@rmit.edu.au. Lecture 20: Internet. Intro to IT. . Introduction to IT. Prabhaker. . Mateti. ACK: Assembled from many sources. About Attribute Grammars. Attribute grammars (AGs) add semantic info on parse tree nodes . Used for semantic checking and other compile-time analyses, e.g., type checking in a compiler. Booting. Intro to IT. . COSC1078 Introduction to Information Technology. . Lecture 15. Booting. James Harland. james.harland@rmit.edu.au. Lecture 15: Booting. Intro to IT. . Introduction. James Harland. . Intro to Applied Entomology, Lecture 19. I. Soil-applied & seed-treatment insecticides. Soil-applied for residual control:. Applied to kill insects in treated soil at time of application and for a period up to several weeks later; incorporated (at least lightly) or injected to mix with soil. Intro to IT. . COSC1078 Introduction to Information Technology. . Lecture 5. Audio. James Harland. james.harland@rmit.edu.au. Lecture . 5: Audio. Intro to IT. . Introduction. James Harland. Email:. Attributes store extra . information. in . AST nodes.. type: . int. val. : . 3. code: . iconst_3. .... type: . int. val. : 4. code: . iconst_4. .... type: . int. val. : 4. env. : •. offs: 1. code: . Attributes can have any type, but often they are trees. Example:. context-free grammar rule: . A ::= B C. attribute grammar rules:. A ::= B C . { . Plus($1. , $. 2. ) . }. or, . e.g.. A ::= B. Learning . Objectives. At the conclusion of the chapter, the student will be able to:. Define the three basic concepts in the theory of computation: automaton, formal language, and grammar.. Solve exercises using mathematical techniques and notation learned in previous courses.. Review. So far, we’ve covered the following: . . Compilation methods: compilation vs. interpretation.. . The overall . c. ompilation process.. Front-end analysis . Lexical Analysis. Syntax Analysis. Eran. . Yahav. 1. 2. You are here. Executable . code. exe. Source. text . txt. Compiler. Lexical. Analysis. Syntax Analysis. Parsing. Semantic. Analysis. Inter.. Rep.. (IR). Code. Gen.. 3. Last week: . Benchmark using Intel Compiler . Version 15.0.2.164 Build . 20150121. Calebe de Paula Bianchini. IPCC/UNESP. The Problem. Some issues were detected using Intel Compiler with . always_inline. 10x slower to compile . Eran. . Yahav. 1. Reference: . Dragon 6.2,6.3,6.4,6.6 . www.cs.technion.ac.il/~. yahave/tocs2011/compilers-lec08.pptx. 2. You are here. Executable . code. exe. Source. text . txt. Compiler. Lexical. Cognitive Psychology. Notes 11. Where We Are. We. ’. re continuing with higher cognition. We still have:. Language—Structure. Language—Meaning. Reasoning/Decision making. Human factors. Plan of Attack.