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Compiler design lab manual cs6612 28-06-2018, 05:50 PM #1 College Name :Varuvan Vadivelan Intitute of Technology Department :B.E. – CSE Semester : III Year / VI Semester Subject Code :CS6612 Subject Name :COMPILER LABORATORY Study Material Description : LIST OF EXPERIMENTS: 1. Implementation of symbol table. 2. Develop a lexical analyzer to recognize a few patterns in c (ex. Identifers, constants, comments, operators etc.) 3. Implementation of lexical analyzer using lex tool. 4. Generate yacc specification for a few syntatic categories. a) Program to recognize a valid arithmetic expression that uses operator +, -, * and /. b) Program to recognize a valid variable which starts with a letter followed by any number of letter or digits. c) Implementation of calculator using lex and yacc. 5. Convert the bnf rules into yacc form and write code to generate abstract syntax tree. 6. Implement type checking 7. Implement control flow analysis and data flow analysis. 8. Implement any one storage allocation strategies(heap, stack, static) 9. Construction of DAG 10. Implement the back end of the compiler which takes the three address code and produces the 8086nassembly language instructions that can be assembled and run using a 8086 assembler. The target assembly instructions can be simple move , add, sub, jump. Also simple addressing modes are used. 11. Implementation of simple code optimization techniques (constant folding. etc.) COMPILER-LABORATORY.pdf (Size: 851.63 KB / Downloads: 14,023) You're Reading a Free Preview Pages 8 to 19 are not shown in this preview. You're Reading a Free Preview Pages 24 to 29 are not shown in this preview. You're Reading a Free Preview Pages 9 to 17 are not shown in this preview. You're Reading a Free Preview Pages 24 to 25 are not shown in this preview. You're Reading a Free Preview Pages 29 to 30 are not shown in this preview. You're Reading a Free Preview Pages 34 to 37 are not shown in this preview. You're Reading a Free Preview Pages 41 to 57 are not shown in this preview. CS6612 COMPILER LAB Manual Anna University Regulation 2013 Computer Science & Engineering (CSE) CS6612 COMPILER LAB Manual for all experiments is provided below. Download link for IT 6th SEM CS6612 COMPILER LABORATORY Manual is listed down for students to make perfect utilization and score maximum marks with our study materials. Anna University Regulation 2013 Computer Science & Engineering (CSE) 6th SEM CS6612 COMPILER LAB-COMPILER LABORATORY Manual CONSTRUCTION OF NFA AIM: To write a program for constructing an NFA from given regular expression using C++. ALGORITHM: 1. Create a menu for getting four regular expressions input as choice. 2. To draw NFA for a, a/b ,ab ,a* create a routine for each regular expression. 3. For converting from regular expression to NFA, certain transition had been made based on choice of input at the rumtime. 4. Each of the NFA will be displayed is sequential order. PROGRAM: #include #include #include struct node { char start; char alp; node *nstate; }*p,*p1,*p2,*p3,*p4,*p5,*p6,*p7,*p8; char e=’e’; void disp(); void re1() { p1=new(node); p2=new(node); p1->start=’0′; p1->alp=’e’; p1->nstate=p2; p2->start=’1′; p2->alp=’a’; p2->nstate=NULL; disp(); getch(); } void re2() { p1=new(node); p2=new(node); p3=new(node); p4=new(node); p5=new(node); p6=new(node); p7=new(node); p8=new(node); CS6612 Compiler Lab Manual with all experiments – Download Here If you require any other notes/study materials, you can comment in the below section. Related Links For CS6612 Compiler Lab Syllabus – Click here Search Terms Anna University 6th SEM IT COMPILER LAB Manual CS6612 COMPILER LABORATORY Manual free download Anna University IT COMPILER LAB Manual Regulation 2013 CS6612 Manual, COMPILER LAB experiment wise Manual – IT 6th Semester Embed Size (px) 344 x 292429 x 357514 x 422599 x 4871. IMPLEMENTATION OF SYMBOL TABLEAIM:To write a C program to implementa symbol table.ALGORITHM:1) Start theprogram.2) Get theinput from the user with the terminating symbol $.3) Allocate memory for the variable by dynamic memory allocation function.4) If the next character of the symbol is an operator then only the memory is allocated.5) While reading, the input symbol is inserted into symbol table alongwith its memory address.6) The steps are repeated till $ is reached.7) To reach a variable, enter the variable to the searched and symbol table has been checked for corresponding variable, the variable along with its address is displayed as result.8) Stop the program.PROGRAM:#include #include#include#include#include#includevoid main(){int i=0,j=0,x=0,n,flag=0;void *p,*add[5];char ch,srch,b[15],d[15],c;clrscr();printf("Expression terminated by $ : ");while((c=getchar())!='$'){ b[i]=c;i++;}n=i-1;printf("Given Expression : ");i=0;while(iPage 2Embed Size (px) 344 x 292429 x 357514 x 422599 x 487Text of 4 compiler lab - Syntax Ana 1. COMPILER ENGINEERINGLAB # 4: SYNTAX ANALYSIS (PARSING) 2. LEXICAL ANALYSIS SUMMARY 1. Start New Token 2. Read 1st character to start recognizing its typeaccording to the algorithm specified in 3. Slide 3 3. Pass its Token (Lexeme Type) and Value Attribute send to Parser 4. Repeat Steps (1-3) 5. Repeat Until EndDepartment of Computer Science -10-14/3/12 2 Compiler Engineering Lab 3. Start New TOKEN Read 1st Character If is Digit?TOKEN = NUMIf is Letter?Read Following CharactersIf any is digit or _?TOKEN = IDIs a If all letters?Keyword?Is RELOP?Is 2nd TOKEN=TOKEN=KEYWOR >,Page 3 Embed Size (px) 344 x 292429 x 357514 x 422599 x 487 PROGRAM CODE : // Code Optmization for constant folding #include #include #include #include struct ConstFold { char New_Str[10]; char str[10]; } Opt_Data[20]; void ReadInput(char Buffer[],FILE *Out_file); int Gen_Token(char str[],char Tokens[][10]); int New_Index=0; int main() { FILE *In_file,*Out_file; char Buffer[100],ch; int i=0; In_file=fopen("code.txt","r"); Out_file=fopen("output.txt","w"); while(1) { ch= fgetc(In_file); i=0; while(1) { if(ch=='') break; Buffer[i++] = ch; ch = fgetc(In_file); if(ch==EOF) break; } if(ch==EOF) break; Buffer[i]='\0'; ReadInput(Buffer,Out_file); } return 0; fclose(In_file); fclose(Out_file); } void ReadInput(char Buffer[],FILE *Out_file) { char temp[100],Token[10][10]; int n,i,j,flag=0; View all posts by Education Xipuwiyano yeruzufu kufometidufa laho wo votilafavi xevuxuzi fabelijede vovi. 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