fix CI

.github/workflows/build_mlir_cache.yml

@@ -0,0 +1,50 @@
+name: Build MLIR Cache
+
+on:
+  workflow_call:
+    inputs:
+      llvm-commit:
+        required: true
+        type: string
+
+jobs:
+  build-mlir:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Cache MLIR build
+        id: cache-mlir
+        uses: actions/cache@v4
+        with:
+          path: onnx-mlir/llvm-project/build
+          key: mlir-${{ runner.os }}-${{ inputs.llvm-commit }}
+
+      - name: Install build dependencies
+        if: steps.cache-mlir.outputs.cache-hit != 'true'
+        run: |
+          sudo apt update
+          sudo apt install -y cmake ninja-build build-essential
+
+      - name: Clone LLVM
+        if: steps.cache-mlir.outputs.cache-hit != 'true'
+        run: |
+          git clone --filter=blob:none --no-checkout https://github.com/llvm/llvm-project.git onnx-mlir/llvm-project
+          cd onnx-mlir/llvm-project
+          git fetch --depth 1 origin ${{ inputs.llvm-commit }}
+          git checkout FETCH_HEAD
+
+      - name: Build MLIR
+        if: steps.cache-mlir.outputs.cache-hit != 'true'
+        run: |
+          mkdir -p onnx-mlir/llvm-project/build
+          cd onnx-mlir/llvm-project/build
+          cmake -G Ninja ../llvm \
+            -DLLVM_ENABLE_PROJECTS="mlir;clang" \
+            -DLLVM_ENABLE_RUNTIMES="openmp" \
+            -DLLVM_TARGETS_TO_BUILD="host" \
+            -DCMAKE_BUILD_TYPE=Release \
+            -DLLVM_ENABLE_ASSERTIONS=ON \
+            -DLLVM_ENABLE_RTTI=ON \
+            -DENABLE_LIBOMPTARGET=OFF \
+            -DLLVM_ENABLE_LIBEDIT=OFF
+          cmake --build .