[CI] Enable cached checkout in main pipeline (#5180)

Enabling repo cache significantly improves performance for LLVM Test Suite jobs (approx. 10 minutes down to 5).

For yet unknown reason, enabling cache doesn't work for intel/llvm repo in LLVM Test Suite jobs, but since LLVM Test Suite action will be packaged with containers in future, this is not a big deal.

Author: alexbatashev

.github/workflows/sycl_linux_build_and_test.yml

@@ -109,11 +109,16 @@ jobs:
       image: ${{ fromJSON(needs.configure.outputs.params).build_image }}
       options: -u 1001:1001
     steps:
-    - uses: actions/checkout@v2
+    # GHA requires relative paths for actions. Copy actions from container root
+    # to CWD.
+    - run: cp -r /actions .
+    # Cleanup will be run after all actions are completed.
+    - name: Register cleanup after job is finished
+      uses: ./actions/cleanup
+    - uses: ./actions/cached_checkout
       with:
         path: src
-    - name: Register cleanup after job is finished
-      uses: ./src/devops/actions/cleanup
+        cache_path: "/__w/repo_cache/"
     - name: Setup Cache
       uses: actions/cache@v2
       if: ${{ steps.parameters.build_github_cache }}
@@ -213,11 +218,14 @@ jobs:
       image: ${{ fromJSON(needs.configure.outputs.params).intel_drivers_image }}
       options: -u 1001 --device=/dev/dri
     steps:
+    - run: cp -r /actions .
+    - name: Register cleanup after job is finished
+      uses: ./actions/cleanup
+    # FIXME cached_checkout fails here, but works everywhere else
     - uses: actions/checkout@v2
       with:
         path: llvm
-    - name: Register cleanup after job is finished
-      uses: ./llvm/devops/actions/cleanup
+    # TODO should this action be packed into container as well?
     - uses: ./llvm/devops/actions/llvm_test_suite
       name: Run LLVM Test Suite
       with:
@@ -240,11 +248,13 @@ jobs:
       image: ${{ fromJSON(needs.configure.outputs.params).intel_drivers_image }}
       options: -u 1001 --device=/dev/dri
     steps:
+    - run: cp -r /actions .
+    - name: Register cleanup after job is finished
+      uses: ./actions/cleanup
+    # FIXME cached_checkout fails here, but works everywhere else
     - uses: actions/checkout@v2
       with:
         path: llvm
-    - name: Register cleanup after job is finished
-      uses: ./llvm/devops/actions/cleanup
     - uses: ./llvm/devops/actions/llvm_test_suite
       name: Run LLVM Test Suite
       with:
@@ -267,11 +277,13 @@ jobs:
       image: ${{ fromJSON(needs.configure.outputs.params).intel_drivers_image }}
       options: -u 1001
     steps:
+    - run: cp -r /actions .
+    - name: Register cleanup after job is finished
+      uses: ./actions/cleanup
+    # FIXME cached_checkout fails here, but works everywhere else
     - uses: actions/checkout@v2
       with:
         path: llvm
-    - name: Register cleanup after job is finished
-      uses: ./llvm/devops/actions/cleanup
     - uses: ./llvm/devops/actions/llvm_test_suite
       name: Run LLVM Test Suite
       with:
@@ -293,11 +305,15 @@ jobs:
       image: ${{ fromJSON(needs.configure.outputs.params).amdgpu_image }}
       options: --device=/dev/dri --device=/dev/kfd
     steps:
+    - run: cp -r /actions .
+    - name: Register cleanup after job is finished
+      uses: ./actions/cleanup
+    # TODO remove this step one LLVM Test Suite action is settled and packed
+    # into container.
+    # FIXME cached_checkout fails here, but works everywhere else
     - uses: actions/checkout@v2
       with:
         path: llvm
-    - name: Register cleanup after job is finished
-      uses: ./llvm/devops/actions/cleanup
     - uses: ./llvm/devops/actions/llvm_test_suite
       name: Run LLVM Test Suite
       with:

devops/actions/llvm_test_suite/action.yml

@@ -33,12 +33,15 @@ post-if: false
 runs:
   using: "composite"
   steps:
+  - run: cp -r /actions .
+    shell: bash
   - name: Checkout LLVM Test Suite
-    uses: actions/checkout@v2
+    uses: ./actions/cached_checkout
     with:
       path: llvm_test_suite
       repository: 'intel/llvm-test-suite'
       ref: ${{ inputs.test_ref }}
+      cache_path: "/__w/repo_cache/"
   - name: Download compiler toolchain
     uses: actions/download-artifact@v2
     with: