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Machine-Level Programming II: Control Flow September 1, 2008. 15-213 “The course that gives CMU its Zip!”. Topics Condition Codes Setting Testing Control Flow If-then-else Varieties of Loops Switch Statements. x86-64 features conditional move different loop implementation. class05.ppt.

Test 1 Post Mortem. CSCE 531 Compiler Construction. Topics Questions and points Grade Distribution Answers. February 20, 2006. Questions and Point Evaluations. 5 Recursive Descent parsing Transition diagram 7pts recursive parsing 7pts LL(1) table construction pts Modifications 1 pt

Where you can find the course material?. Note/URL 関連 URL: 関連資料を下記に掲載してあります。 Some course materials are available at: http://www.goto.info.waseda.ac.jp / ~ goto/tokuron.html. Syllabus. Note/URL. 関連 URL: 関連資料を下記に掲載してあります。 Some course materials are available at:

Intermediate Code Generation. Abstraction at the source level identifiers, operators, expressions, statements, conditionals, iteration, functions (user defined, system defined or libraries) Abstraction at the target level

Chap 8: Intermedicate Code Generation. Prof. Steven A. Demurjian Computer Science & Engineering Department The University of Connecticut 371 Fairfield Way, Unit 2155 Storrs, CT 06269-3155. steve@engr.uconn.edu http://www.engr.uconn.edu/~steve (860) 486 - 4818.

Front end. target program. Code optimizer. Code generator. Source program. Intermediate code. Intermediate code. Chapter 9 Code optimization Section 0 overview. 1.Position of code optimizer 2.Purpose of code optimizer to get better efficiency Run faster Take less space.

Chapter 2. Decision-Making Instructions (Instructions: Language of the Computer Part V). So far we’ve learned:. MIPS (RISC) Design Principles Simplicity favors regularity Smaller is faster Make the common case fast Good design demands good compromises Recent Instructions:

The origin of E+A galaxies. Tomo Goto Japan Aerospace Exploration Agency. January. In Chile. In Japan. The origin of E+A galaxies. Strong Balmer absorption No [OII], no Hα Post-starburst A star + absorption lines E+A galaxies K+A galaxies. Tomo Goto Japan Aerospace Exploration Agency.

0000 ADD r1 := r1 + r2 0001 AND r1 := r1 . r2 0010 MOVE r1 := r2 0011 COMPL r1 := inv (r2) 0100 LSHIFT r1 := lshift (r2) 0101 RSHIFT r1 := rshift (r2) 0110 GETMBR r1 := MBR 0111 TEST if r2 < 0 then N := true; if r2 = 0 then Z := true 1000 BEGRD MAR := r1; rd

Intermediate Code Generation. Intermediate Code Generation. Intermediate languages Declarations Expressions Statements. :=. a. +. *. *. -. -. b. b. c. c. Intermediate Languages. Syntax tree Postfix notation a b c - * b c - * + := Three-address code.

Machine-Level Programming II: Control Flow Sept. 13, 2006. 15-213 “The course that gives CMU its Zip!”. Topics Condition Codes Setting Testing Control Flow If-then-else Varieties of Loops Switch Statements. x86-64 features conditional move different loop implementation. class05.ppt.

Compiler Theory – 08/10( ppt ). By Anindhya Sankhla 11CS30004 Group : G 29. Canonical LR(1) items. The canonical collection of LR(1) items: set of items derivable from [ S’ ::= S; eof ] set of all items that can derive the final configuration

振動スイッチを活用. 振動（傾き）を 検出. ボールが移動. a) オン時. b) オフ時. オンからオフ時の観察. 処理の流れ（フローチャート）. 振動スィッチの オン / オフ状態を 調べる. LOOP0 MOVLW D'20' MOVWF KAISU MOVLW D'0' MOVWF HENKA CHECK1 BTFSC PORTA,5 GOTO CHECK2 CALL WAIT1

Machine-Level Programming 2 Control Flow. Topics Condition Codes Setting Testing Control Flow If-then-else Varieties of Loops Switch Statements. %eax. %edx. %ecx. %ebx. %esi. %edi. %esp. %ebp. Processor State (IA32, Partial). Information about currently executing program

Introduction to Optimizations. Guo, Yao. Outline. Optimization Rules Basic Blocks Control Flow Graph (CFG) Loops Local Optimizations Peephole optimization. Levels of Optimizations. Local inside a basic block Global (intraprocedural) Across basic blocks Whole procedure analysis

Instruction Set Architecture. MIPS Section 2.6-2.7,2.8,2.9. Instructions for Making Decisions. beq reg1, reg2, L1 Go to the statement labeled L1 if the value in reg1 equals the value in reg2 bne reg1, reg2, L1

16.317 Microprocessor Systems Design I. Instructor: Dr. Michael Geiger Spring 2014 Lecture 24: PIC instruction set (continued). Lecture outline. Announcements/reminders Exam 2 to be returned Monday, 4/7 HW 5 to be posted by Monday Today’s lecture Continue with PIC instruction set.

EECS 314 Computer Architecture. Language of the Machine. Function Calling. Instructor: Francis G. Wolff wolff@eecs.cwru.edu Case Western Reserve University This presentation uses powerpoint animation: please viewshow. Review: Control Flow.

Examples of Basic Blocks. t7. +. t5. t4. *. +. t1. t3. *. *. b. b. t2. 2. *. a. a. a. b. a b. Following sequence of three-address statements forms a basic block: t1 : = a * a t2 := a * b t3 := 2 * t2 t4 := t1+ t3 t5 := b * b t6 := t4 + t5

LR 与 LL 分析. 编译原理习题课二 胡云斌 PB1011053. Conten t. 1. 文法分析的前提 2. 文法分析的准备 3. 开始分析 4. 以后实验的建议. 分析前提. 一个文法： 1. 不是二义的 （为什么？ ） 有冲突或多选择，如果能给定优先级，二义也可。 2. 是否可左 递归 的，提左因子（ 自上而下 还是自下而上 ） 从后往前和从前往后的区别 A-> aA , A->Aa