C2RISC-Engine

This GitHub Repo is about our semester long project under the course CSN-352 Compiler Design

Compiler Specification

Source Language - C
Target Machine/Arch - "RISC-V"
Intermediate Representation - "Three Address Code"
Implementation Language - C++

Features in our C2RISC-Engine

Basic Features

• Implement arithmetic and logical operators
• Implement if-else
• Implement for loop
• Implement while loop
• Implement do-while loop
• Implement switch cases
• Implement int and char arrays
• Work with pointers
• Create and use struct
• Use printf and scanf | A custom version since we are not able to link the standard library
• Implement function calls with arguments
• Use goto, break, and continue
• Use the static keyword

Advanced Features

• Implement recursive function calls
• Use typedef
• Implement an until loop
• Implement multi-dimensional arrays
• Work with multi-level pointers

Extra Features

• Extended to all type of arrays
• Any Combination of array, pointer, function levels
• const keyword supported

Here's your usage instruction converted into a clean and readable Markdown format:

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C2RISC-Engine Usage Instructions

Usage: bin/C2RISC_Engine <input_file> [ -o <output_file> ]/[ -t ] [ -d{1,2} <dot_file> ]

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💡 Compiler Options

Option	Description
(No Arguments)	Output will be printed to stdout (terminal).
-o [<output_file>]	Send output to a file to <output_file> else same name as input create a output with input_file's base + (.s)
-t	Testing Mode - Appends output to <input_file>.

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🐞 Debugging Options

Option	Description
-d1 <dot_file>	Outputs Parse Tree to <dot_file>
-d2 <dot_file>	Outputs Annotated Parse Tree to <dot_file>
-ir	Stops at the IR (Intermediate Representation) Phase only

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Major Concepts Used

• Lvalue(Modifiable or Non-Modifiable) & Rvalue

• Backpatching used for control-flow

• Space Change logic for array/pointer derefrencing to accomodate limitations of TAC

• Register allocation (sub-optimal)

• Stack allocation

• Function call

• Function return

• Function arguments

• Live variable analysis

• Dead code elimination

• Constant folding and more Optimizations

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Don't panic for sucide message 👻