shyamsunder007/py-icg

Intermediate Code Generator

CS335A: Compiler Design (Assignment 3: INTERMEDIATE CODE GENERATOR)

• Source Language: Python

• Target Language: MIPS Assembly

• Implementation Language: Python

• Authors: Abhilash Kumar, Arnab Ghosh and Saurav Kumar

• Tool Used : PLY (Python Lex and Yacc)

Three Address Code Representation

---

1. Representation: regDest, regSrc1, regSrc2, op

2. Operators:

   • HALT
   • JUMP_RETURN
   • PARAM
   • SW
   • LW
   • =
   • PRINT
   • GOTO
   • RETURN
   • COND_GOTO
   • %
   • /
   • <

   • =

   • <=
   • ==
   • !=
   • |
   • ^
   • &
   • not
   • and
   • or
   • <<

Running Instruction

---

1. Run the makefile

make

2. To run the IR Generator, pass the path of filename as argument.

bin/irgen test/<filename>.py

3. To clean the executables and other helper files, run make clean.

make clean

Directory Structure

---

• bin:
  • converter.py [Python source file to convert the dump of parser into dot file: may be needed for debugging]
  • lex.py [Python source file from PLY for lexing]
  • lexer.py [Python source file to specify language lexemes]
  • irgen [Python dependent bytecode for parsing and semantic analysis]
  • parser.py [Python source file to specify grammar]
  • yacc.py [Python source file from PLY for parsing ]
  • symbolTable.py [Python source file with necessary functions related to symbol table]
  • tac.py [Python scource file with necessary functions related to Three Address Code Representation]
• src:
  • converter.py [Python source file to convert the dump of parser into dot file: may be needed for debugging]
  • lex.py [Python source file from PLY for lexing]
  • lexer.py [Python source file to specify language lexemes]
  • irgen [Python dependent bytecode for parsing and semantic analysis]
  • parser.py [Python source file to specify grammar]
  • yacc.py [Python source file from PLY for parsing ]
  • symbolTable.py [Python source file with necessary functions related to symbol table]
  • tac.py [Python scource file with necessary functions related to Three Address Code Representation]
• test:
  • 'filename'.py [Test files]
• .gitignore
• makefile [To move the source files to bin directory and compile bytecode for lexer and making it executable]
• readme.md