[ci] Add step to run unit tests.

.github/workflows/ci.yml

@@ -66,9 +66,13 @@ jobs:
           path: ${{ env.CACHE_DIR }}
           key: build-test-cpp-asserts-manylinux-v2-${{ github.sha }}
 
-      - name: Test project (torch-${{ matrix.torch-version }})
+      - name: Unit tests
         run: |
           export cache_dir="${{ env.CACHE_DIR }}"
+          bash build_tools/ci/unit_test_posix.sh
+
+      - name: Integration tests (torch-${{ matrix.torch-version }})
+        run: |
           bash build_tools/ci/test_posix.sh ${{ matrix.torch-version }}
 
       - name: Check generated sources (torch-nightly only)

build_tools/ci/unit_test_posix.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -eu -o errtrace
+
+this_dir="$(cd $(dirname $0) && pwd)"
+repo_root="$(cd $this_dir/../.. && pwd)"
+torch_version="${1:-unknown}"
+
+export CMAKE_TOOLCHAIN_FILE="$this_dir/linux_default_toolchain.cmake"
+export CC=clang
+export CXX=clang++
+export CCACHE_DIR="${cache_dir}/ccache"
+export CCACHE_MAXSIZE="350M"
+export CMAKE_C_COMPILER_LAUNCHER=ccache
+export CMAKE_CXX_COMPILER_LAUNCHER=ccache
+
+cmake --build $repo_root/build --target check-torch-mlir-all