Compiler course 2025

Resources

• Telegram сhat
• Telegram сhannel
• Tasks and results
• Materials
  • Lecture recordings
  • Lecture presentations
  • LLVM
  • MLIR
  • Clang
  • Official YouTube channel LLVM

What is LLVM?

LLLVM is a set of compiler and toolchain technologies that can be used to develop a frontend for any programming language and a backend for any instruction set architecture. LLVM is designed around a language-independent intermediate representation (IR) that serves as a portable, high-level assembly language that can be optimized with a variety of transformations over multiple passes. The name LLVM originally stood for Low Level Virtual Machine, though the project has expanded and the name is no longer officially an initialism.

This repository contains the source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and run-time environments.

The LLVM project has multiple components. The core of the project is itself called "LLVM". This contains all of the tools, libraries, and header files needed to process intermediate representations and convert them into object files. Tools include an assembler, disassembler, bitcode analyzer, and bitcode optimizer.

0. Intro

This course will consist of 4 laboratory work. As part of the laboratory works, you will study all stages of compilation, starting with the generation of the AST tree, ending with code generation.

Note

Recommended OS - Linux (WSL).

1. Clone repository

1. Create fork this repository
2. Clone local fork

git clone https://github.com/<your-github-name>/llvm.git
cd llvm/
git checkout -b <name-your-branch>

2. Setup environment

sudo apt-get update \
    && sudo apt-get install -q -y --no-install-recommends \
        git \
        cmake \
        ccache \
        mold \
        clang \
        build-essential \
        ninja-build \
        python3 \
        python3-pip \
        wget \
        vim

3. Build project

cmake -G Ninja -S llvm -B build \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_CXX_COMPILER=clang++ \
    -DCMAKE_C_COMPILER=clang \
    -DLLVM_USE_LINKER=mold \
    -DLLVM_CCACHE_BUILD=ON \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DLLVM_ENABLE_PROJECTS="clang;mlir" \
    -DLLVM_TARGETS_TO_BUILD=X86 # specify your target architecture (X86, Aarch64)
cmake --build build --config Release -j 4

4. Where to implement laboratory work?

Each directory has an implementation example.

ClangAST lab

cd clang/compiler-course/ # for labs

cd clang/test/compiler-course/ # for tests

LLVM IR lab

cd llvm/compiler-course/llvm-ir/ # for labs

cd llvm/test/compiler-course/ # for tests

Backend lab

cd llvm/compiler-course/backend/ # for labs

cd llvm/test/compiler-course/ # for tests

MLIR lab

cd mlir/compiler-course/ # for labs

cd mlir/test/compiler-course/ # for tests

5. Run tests

For all tests

cmake --build build --config Release -t \
    check-llvm-compiler-course \
    check-clang-compiler-course \
    check-mlir-compiler-course -j 4

For one test

./build/bin/llvm-lit -v /path/to/test_file