.github/workflows/build-and-test.yaml

name: Build and test

on:
  push:
    paths-ignore:
    - 'scripts/**'

env:
  EMITC: emitc
  LLVM: llvm

jobs:
  build-llvm:
    name: Build LLVM
    runs-on: ubuntu-20.04
    steps:
    - name: Checkout EmitC
      uses: actions/checkout@v2
      with:
        path: ${{ env.EMITC }}
        submodules: 'true'

    - name: Get LLVM hash
      id: get-llvm-hash
      run: echo "llvm_hash=$(cat ${{ env.EMITC }}/build_tools/llvm_version.txt)" >> $GITHUB_ENV
      shell: bash

    - name: Cache LLVM
      id: cache-llvm
      uses: actions/cache@v2
      with:
        path: ${{ env.LLVM }}
        key: ${{ runner.os }}-llvm-20.04-install-${{ env.llvm_hash }}

    - name: Checkout LLVM
      if: steps.cache-llvm.outputs.cache-hit != 'true'
      uses: actions/checkout@v2
      with:
        repository: llvm/llvm-project
        path: ${{ env.LLVM }}
        ref: ${{ env.llvm_hash }}

    - name: Rebuild and Install LLVM
      if: steps.cache-llvm.outputs.cache-hit != 'true'
      run: |
        mkdir -p ${LLVM}/build
        mkdir -p ${LLVM}/install
        cd ${LLVM}/build
        cmake ../llvm \
          -DLLVM_INSTALL_UTILS=ON \
          -DLLVM_ENABLE_LLD=ON \
          -DLLVM_ENABLE_PROJECTS=mlir \
          -DLLVM_TARGETS_TO_BUILD="host" \
          -DLLVM_INCLUDE_TOOLS=ON \
          -DLLVM_BUILD_TOOLS=OFF \
          -DLLVM_INCLUDE_TESTS=OFF \
          -DCMAKE_INSTALL_PREFIX=../install \
          -DCMAKE_BUILD_TYPE=Release \
          -DLLVM_ENABLE_ASSERTIONS=On \
          -DCMAKE_C_COMPILER=clang \
          -DCMAKE_CXX_COMPILER=clang++
        cmake --build . --target install -- -j$(nproc)

  build:
    name: Build and test EmitC
    needs: build-llvm
    runs-on: ubuntu-20.04
    steps:
    - name: Configure Environment
      run: echo "$GITHUB_WORKSPACE/${LLVM}/install/bin" >> $GITHUB_PATH

    - name: Checkout EmitC
      uses: actions/checkout@v2
      with:
        path: ${{ env.EMITC }}
        submodules: 'true'

    - name: Get LLVM hash
      id: get-llvm-hash
      run: echo "llvm_hash=$(cat ${{ env.EMITC }}/build_tools/llvm_version.txt)" >> $GITHUB_ENV
      shell: bash

    - name: Cache LLVM
      id: cache-llvm
      uses: actions/cache@v2
      with:
        path: ${{ env.LLVM }}
        key: ${{ runner.os }}-llvm-20.04-install-${{ env.llvm_hash }}

    - name: Build and test EmitC (Debug)
      run: |
        mkdir -p ${EMITC}/build_debug
        cd ${EMITC}/build_debug
        cmake .. \
          -DCMAKE_BUILD_TYPE=Debug \
          -DLLVM_ENABLE_ASSERTIONS=ON \
          -DMLIR_DIR=$GITHUB_WORKSPACE/${LLVM}/install/lib/cmake/mlir/ \
          -DLLVM_DIR=$GITHUB_WORKSPACE/${LLVM}/install/lib/cmake/llvm/ \
          -DCMAKE_LINKER=lld \
          -DCMAKE_C_COMPILER=clang \
          -DCMAKE_CXX_COMPILER=clang++ \
          -DLLVM_EXTERNAL_LIT=`pwd`/../../${LLVM}/build/bin/llvm-lit
        cmake --build . --target check-emitc -- -j$(nproc)

    - name: Build and test EmitC (Release)
      run: |
        mkdir -p ${EMITC}/build_release
        cd ${EMITC}/build_release
        cmake .. \
          -DCMAKE_BUILD_TYPE=Release \
          -DLLVM_ENABLE_ASSERTIONS=OFF \
          -DMLIR_DIR=$GITHUB_WORKSPACE/${LLVM}/install/lib/cmake/mlir/ \
          -DLLVM_DIR=$GITHUB_WORKSPACE/${LLVM}/install/lib/cmake/llvm/ \
          -DCMAKE_LINKER=lld \
          -DCMAKE_C_COMPILER=clang \
          -DCMAKE_CXX_COMPILER=clang++ \
          -DLLVM_EXTERNAL_LIT=`pwd`/../../${LLVM}/build/bin/llvm-lit
        cmake --build . --target check-emitc -- -j$(nproc)