fix empty bug #17

	name: Build and Test

	on: [push, pull_request]

	jobs:
	# lint:
	#name: Check Formatting
	#runs-on: ubuntu-latest
	#steps:
	#- name: Get LLVM
	# uses: actions/checkout@v2
	#- name: clang-format
	# uses: DoozyX/clang-format-lint-action@v0.5
	# with:
	# source: './mlir'
	# extensions: 'h,cpp'
	# clangFormatVersion: 9

	build:
	name: Build and Test
	runs-on: ubuntu-latest
	steps:
	- name: Get LLVM
	uses: actions/checkout@v2
	with:
	path: 'llvm'
	- name: Cache LLVM Build
	id: cache-llvm-build
	uses: actions/cache@v1
	with:
	path: 'llvm/build'
	key: ${{ runner.os }}-llvm-build2
	- name: Setup LLVM build
	if: steps.cache-llvm-build.outputs.cache-hit != 'true'
	run: mkdir llvm/build && cd llvm/build && cmake $GITHUB_WORKSPACE/llvm/llvm -DLLVM_BUILD_EXAMPLES=OFF -DLLVM_TARGETS_TO_BUILD="host" -DLLVM_ENABLE_PROJECTS='mlir' -DLLVM_OPTIMIZED_TABLEGEN=ON -DLLVM_ENABLE_OCAMLDOC=OFF -DLLVM_ENABLE_BINDINGS=OFF -DLLVM_INSTALL_UTILS=ON -DCMAKE_LINKER=/usr/bin/lld -DLLVM_PARALLEL_LINK_JOBS=2 -DCMAKE_C_COMPILER=clang -DCMAKE_CXX_COMPILER=clang++ -DLLVM_ENABLE_LLD=ON -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_ASSERTIONS=ON
	- name: Build
	run: cd llvm/build && cmake --build .
	- name: FileCheck Test MLIR (check-mlir)
	run: cd llvm/build && cmake --build . --target check-mlir
	- name: UnitTest MLIR (check-mlir-unit)
	run: cd llvm/build && cmake --build . --target check-mlir-unit

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