UP Lecture 27

Compilers
Intermediate Code IV
(202605)

Transcript

1. jgs jgs Compilers Lecture 27: Intermediate Code IV Dr. Javier Gonzalez-Sanchez jgonzalezs@up.edu.mx
2. Dr. Javier Gonzalez-Sanchez | Compilers | 2 jgs jgs GitHub Classroom Final Project: https://classroom.github.com/a/pTxhXv6V
3. jgs jgs Previously …
4. Dr. Javier Gonzalez-Sanchez | Compilers | 4 jgs jgs Programming Assignment 4 Level 1 LIT, LOD, STO, OPR
5. jgs jgs Next
6. Dr. Javier Gonzalez-Sanchez | Compilers | 6 jgs jgs Review Programming Assignment 4 Level 2 JMP, JMC
7. Dr. Javier Gonzalez-Sanchez | Compilers | 7 jgs jgs Example | if { int a; int b; a = 10; if (a>1) { print (a); } else { print (b); } return; } int a global 0 int b global 0 int #e1 global 10 int #e2 global 12 LIT 10, 0 STO a, 0 LOD a, 0 LIT 1, 0 OPR 11, 0 ; > JMC #e1, false LOD a, 0 OPR 20, 0 ;print JMP #e2, 0 LOD b, 0 OPR 20, 0 ;print OPR 1, 0 OPR 0, 0
8. Dr. Javier Gonzalez-Sanchez | Compilers | 8 jgs jgs Example | while { int a; int b; a = 10; while (a>1){ print (a); } return; } int a global 0 int b global 0 int #e1 global 10 int #e2 global 3 LIT 10, 0 STO a, 0 LOD a, 0 LIT 1, 0 OPR 11, 0 ; > JMC #e1, false LOD a, 0 OPR 20, 0 ;print JMP #e2, 0 OPR 1, 0 OPR 0, 0
9. Dr. Javier Gonzalez-Sanchez | Compilers | 9 jgs jgs Exercise { int a; int b; a = 10; while (a>1) { if (a != 0) { print (a); } else { print (b); } a = a -1; } }
10. Dr. Javier Gonzalez-Sanchez | Compilers | 10 jgs jgs Handwritten notes
11. Dr. Javier Gonzalez-Sanchez | Compilers | 11 jgs jgs Code WHILE
12. Dr. Javier Gonzalez-Sanchez | Compilers | 12 jgs jgs Code
13. Dr. Javier Gonzalez-Sanchez | Compilers | 13 jgs jgs Code IF
14. Dr. Javier Gonzalez-Sanchez | Compilers | 14 jgs jgs Code
15. Dr. Javier Gonzalez-Sanchez | Compilers | 15 jgs jgs Review Programming Assignment 4 Level 3 Homework: SWITCH
16. Dr. Javier Gonzalez-Sanchez | Compilers | 16 jgs jgs What about this? Translate this source code to intermediate code: int a; switch (a) { case 1: { print("hi”); break;} case 2: { print("world"); break;} default: { print(”end"); break;} }
17. Dr. Javier Gonzalez-Sanchez | Compilers | 17 jgs jgs Handwritten notes Add the symbol table here…
18. Dr. Javier Gonzalez-Sanchez | Compilers | 18 jgs jgs Questions
19. jgs jgs Compilers Javier Gonzalez-Sanchez, Ph.D. jgonzalezs@up.edu.mx Spring 2025 Copyright. These slides can only be used as study material for the Compilers course at Universidad Panamericana. They cannot be distributed or used for another purpose.