llvm/Polygeist

Build instructions

Requirements

• Working C and C++ toolchains(compiler, linker)
• cmake
• make or ninja

1. Clone Polygeist

git clone --recursive https://github.com/llvm/Polygeist
cd Polygeist

2. Install LLVM, MLIR, Clang, and Polygeist

Option 1: Using pre-built LLVM, MLIR, and Clang

Polygeist can be built by providing paths to a pre-built MLIR and Clang toolchain.

1. Build LLVM, MLIR, and Clang:

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

To enable compilation to cuda add -DMLIR_ENABLE_CUDA_RUNNER=1 and remove -DLLVM_TARGETS_TO_BUILD="host" from the cmake arguments. (You may need to specify CUDACXX, CUDA_PATH, and/or -DCMAKE_CUDA_COMPILER)

To enable the ROCM backend add -DMLIR_ENABLE_ROCM_RUNNER=1 and remove -DLLVM_TARGETS_TO_BUILD="host" from the cmake arguments. (You may need to specify -DHIP_CLANG_INCLUDE_PATH, and/or ROCM_PATH)

For faster compilation we recommend using -DLLVM_USE_LINKER=lld.

2. Build Polygeist:

mkdir build
cd build
cmake -G Ninja .. \
  -DMLIR_DIR=$PWD/../llvm-project/build/lib/cmake/mlir \
  -DCLANG_DIR=$PWD/../llvm-project/build/lib/cmake/clang \
  -DLLVM_TARGETS_TO_BUILD="host" \
  -DLLVM_ENABLE_ASSERTIONS=ON \
  -DCMAKE_BUILD_TYPE=DEBUG
ninja
ninja check-polygeist-opt && ninja check-cgeist

To enable compilation to cuda add -DPOLYGEIST_ENABLE_CUDA=1

To enable the ROCM backend add -DPOLYGEIST_ENABLE_ROCM=1

For faster compilation we recommend using -DPOLYGEIST_USE_LINKER=lld.

Option 2: Using unified LLVM, MLIR, Clang, and Polygeist build

Polygeist can also be built as an external LLVM project using LLVM_EXTERNAL_PROJECTS.

1. Build LLVM, MLIR, Clang, and Polygeist:

mkdir build
cd build
cmake -G Ninja ../llvm-project/llvm \
  -DLLVM_ENABLE_PROJECTS="clang;mlir" \
  -DLLVM_EXTERNAL_PROJECTS="polygeist" \
  -DLLVM_EXTERNAL_POLYGEIST_SOURCE_DIR=.. \
  -DLLVM_TARGETS_TO_BUILD="host" \
  -DLLVM_ENABLE_ASSERTIONS=ON \
  -DCMAKE_BUILD_TYPE=DEBUG
ninja
ninja check-polygeist-opt && ninja check-cgeist

ninja check-polygeist-opt runs the tests in Polygeist/test/polygeist-opt ninja check-cgeist runs the tests in Polygeist/tools/cgeist/Test