trisvol / Compiler-Assignment-3-and-4

Intermediate code generation

#Compiler

We will build a cross compiler with the source language as Java, Target Language as MIPS and implementation language as Python.

Lexer

We have a made a lexer for the source language JAVA . The ouptut of the program is a tagged program, with the token types appearing as comments.

Parser

Then from the above, we have made a parser and the output is a parse tree of the input program in dot format(that can be rendered using graphviz)

Intermediate Code Generator

Here, we wrote a Intermediate Code Generator(in Ass3 folder) for the source langauge JAVA. The output for it is a linked list of Three Address Code(3AC). So, we designed the 3AC code, attached semantic rules to the grammar designed in "Compiler-parser" repository to genertae a three-address code for JAVA langauge as a linked-list of three-address statements and print the 3-address code on the standard output.

Assembly Code Generator

Here, we then wrote an Assembly Code Generator from the above INtermediate Code Generator. The output of this is assembly code in MIPS. Here , we have implemented a register allocator,implement the translator to translate staements in three-address code to assembly instruction, set up the data regions to handle global data and constants, and provided some of the library support for useful programs.

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