Install MLIR tutorial on Mac

install_mlir_tutorial.sh

brew install cmake cache ninja
git clone https://github.com/llvm/llvm-project.git
mkdir llvm-project/build
cd llvm-project/build
cmake -G Ninja ../llvm \
   -DLLVM_ENABLE_PROJECTS=mlir \
   -DLLVM_BUILD_EXAMPLES=ON \
   -DLLVM_TARGETS_TO_BUILD="Native;ARM;X86" \
   -DCMAKE_BUILD_TYPE=Release \
   -DLLVM_ENABLE_ASSERTIONS=ON \
   -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ \
   -DLLVM_CCACHE_BUILD=ON
cmake --build . --target check-mlir

# To check if worked, generate the AST of a Toy file:
./bin/toyc-ch1 ../mlir/test/Examples/Toy/Ch1/ast.toy -emit=ast