Merge "scripts: download-toolchain: Update the GCC toolchain to 11.1.0"

check-iree-commit.sh

diff --git a/check-iree-commit.sh b/check-iree-commit.sh
new file mode 100755
index 0000000..222be7b
--- /dev/null
+++ b/check-iree-commit.sh
@@ -0,0 +1,39 @@
+#!/bin/bash
+#
+# Copyright 2021 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Check IREE runtime commit version to be consistent with the compiler.
+
+IREE_SRC="$1"
+
+if [[ -z "${IREE_COMPILER_DIR}" ]]; then
+  echo "Source build/setup.sh first"
+  exit 1
+fi
+if [[ -z "${IREE_SRC}" ]]; then
+  echo "Usage: check-iree-commit.sh <iree source dir>"
+  exit 1
+fi
+
+COMMIT=$(git -C "${IREE_SRC}" rev-parse HEAD)
+
+# Check the source commit is the same as the one recorded in the compiler tag.
+if grep -q "${COMMIT}" "${IREE_COMPILER_DIR}/tag"; then
+  echo "Source code commit matches with the compiler."
+else
+  echo "Source code commit mismatches with the compiler. Please re-download the \
+compiler ('m iree_compiler') and resync the repo."
+  exit 1
+fi