BUDDY MLIR

MLIR-Based Ideas Landing Project (Project page).

Getting Started

The default build system uses LLVM/MLIR as an external library. We also provide a one-step build strategy for users who only want to use our tools. Please make sure the dependencies are available on your machine.

LLVM/MLIR Dependencies

Before building, please make sure the dependencies are available on your machine.

Clone and Initialize

$ git clone [email protected]:buddy-compiler/buddy-mlir.git
$ cd buddy-mlir
$ git submodule update --init

Build and Test LLVM/MLIR/CLANG

$ cd buddy-mlir
$ mkdir llvm/build
$ cd llvm/build
$ cmake -G Ninja ../llvm \
    -DLLVM_ENABLE_PROJECTS="mlir;clang" \
    -DLLVM_TARGETS_TO_BUILD="host;RISCV" \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DCMAKE_BUILD_TYPE=RELEASE
$ ninja check-mlir check-clang

If your target machine includes a Nvidia GPU, you can use the following configuration:

$ cmake -G Ninja ../llvm \
    -DLLVM_ENABLE_PROJECTS="mlir;clang" \
    -DLLVM_TARGETS_TO_BUILD="host;RISCV;NVPTX" \
    -DMLIR_ENABLE_CUDA_RUNNER=ON \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DCMAKE_BUILD_TYPE=RELEASE

To enable MLIR Python bindings, please use the following configuration:

$ cmake -G Ninja ../llvm \
    -DLLVM_ENABLE_PROJECTS="mlir;clang" \
    -DLLVM_TARGETS_TO_BUILD="host;RISCV" \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DCMAKE_BUILD_TYPE=RELEASE \
    -DMLIR_ENABLE_BINDINGS_PYTHON=ON \
    -DPython3_EXECUTABLE=[path_to_python_executable]

If your target machine has lld installed, you can use the following configuration:

$ cmake -G Ninja ../llvm \
    -DLLVM_ENABLE_PROJECTS="mlir;clang" \
    -DLLVM_TARGETS_TO_BUILD="host;RISCV" \
    -DLLVM_USE_LINKER=lld \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DCMAKE_BUILD_TYPE=RELEASE

Build buddy-mlir

If you have previously built the llvm-project, you can replace the $PWD with the path to the directory where you have successfully built the llvm-project.

$ cd buddy-mlir
$ mkdir build
$ cd build
$ cmake -G Ninja .. \
    -DMLIR_DIR=$PWD/../llvm/build/lib/cmake/mlir \
    -DLLVM_DIR=$PWD/../llvm/build/lib/cmake/llvm \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DCMAKE_BUILD_TYPE=RELEASE
$ ninja
$ ninja check-buddy

To utilize the Buddy Compiler Python package, please ensure that the MLIR Python bindings are enabled and use the following configuration:

$ cmake -G Ninja .. \
    -DMLIR_DIR=$PWD/../llvm/build/lib/cmake/mlir \
    -DLLVM_DIR=$PWD/../llvm/build/lib/cmake/llvm \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DCMAKE_BUILD_TYPE=RELEASE \
    -DBUDDY_MLIR_ENABLE_PYTHON_PACKAGES=ON \
    -DPython3_EXECUTABLE=[path_to_python_executable]

If you want to add domain-specific framework support, please add the following cmake options:

Framework	Enable Option	Other Options
OpenCV	-DBUDDY_ENABLE_OPENCV=ON	Add -DOpenCV_DIR=</PATH/TO/OPENCV/BUILD/> or install OpenCV release version on your local device.

One-step building strategy

If you only want to use our tools and integrate them more easily into your projects, you can choose to use the one-step build strategy.

$ cmake -G Ninja -Bbuild \
    -DCMAKE_BUILD_TYPE=Release \
    -DLLVM_ENABLE_PROJECTS="mlir;clang" \
    -DLLVM_TARGETS_TO_BUILD="host;RISCV" \
    -DLLVM_EXTERNAL_PROJECTS="buddy-mlir" \
    -DLLVM_EXTERNAL_BUDDY_MLIR_SOURCE_DIR="$PWD" \
    -DLLVM_ENABLE_ASSERTIONS=ON \
    -DCMAKE_BUILD_TYPE=RELEASE \
    llvm/llvm
$ cd build
$ ninja check-mlir check-clang
$ ninja
$ ninja check-buddy

Dialects

Bud Dialect

Bud dialect is designed for testing and demonstrating.

DIP Dialect

DIP dialect is designed for digital image processing abstraction.

Tools

buddy-opt

The buddy-opt is the driver for dialects and optimization in buddy-mlir project.

buddy-lsp-server

This program should be a drop-in replacement for mlir-lsp-server, supporting new dialects defined in buddy-mlir. To use it, please directly modify mlir LSP server path in VSCode settings (or similar settings for other editors) to:

{
    "mlir.server_path": "YOUR_BUDDY_MLIR_BUILD/bin/buddy-lsp-server",
}

After modification, your editor should have correct completion and error prompts for new dialects such as rvv and gemmini.

AutoConfig Mechanism

The AutoConfig mechanism is designed to detect the target hardware and configure the toolchain automatically.

Examples

The purpose of the examples is to give users a better understanding of how to use the passes and the interfaces in buddy-mlir. Currently, we provide three types of examples.

• IR level conversion and transformation examples.
• Domain-specific application level examples.
• Testing and demonstrating examples.

For more details, please see the documentation of the examples.