Add script to mirror intel/llvm commits

.github/intel-llvm-mirror-base-commit

@@ -0,0 +1 @@
+0e155f0c1ab016e717adb006816eedffa414b7d2

scripts/mirror-commits-from-intel-llvm.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+
+"""
+Mirror commits from the unified-runtime top level directory in the
+https://github.com/intel/llvm repository to the root of the
+https://github.com/oneapi-src/unified-runtime repository.
+"""
+
+from argparse import ArgumentParser, RawTextHelpFormatter
+from subprocess import run, PIPE
+import os
+
+
+REPO_DIR = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
+INTEL_LLVM_MIRROR_BASE_COMMIT_FILE = os.path.join(
+    REPO_DIR, ".github", "intel-llvm-mirror-base-commit"
+)
+
+
+def main():
+    cli = ArgumentParser(description=__doc__, formatter_class=RawTextHelpFormatter)
+
+    # Positional arguments
+    cli.add_argument(
+        "unified_runtime_dir",
+        help="path to a oneapi-src/unified-runtime clone",
+    )
+    cli.add_argument(
+        "intel_llvm_dir",
+        help="path to an intel/llvm clone",
+    )
+
+    # Optional arguments
+    cli.add_argument(
+        "--unified-runtime-remote",
+        default="origin",
+        help="upstream remote to use in the oneapi-src/unified-runtime clone",
+    )
+    cli.add_argument(
+        "--intel-llvm-remote",
+        default="origin",
+        help="upstream remote to use in the intel/llvm clone",
+    )
+    cli.add_argument(
+        "--intel-llvm-mirror-base-commit-file",
+        default=INTEL_LLVM_MIRROR_BASE_COMMIT_FILE,
+        help="path to a file containing the intel/llvm mirror base commit",
+    )
+
+    args = cli.parse_args()
+
+    with open(args.intel_llvm_mirror_base_commit_file, "r") as base_commit_file:
+        intel_llvm_mirror_base_commit = base_commit_file.read().strip()
+
+    print(f"Using intel/llvm mirror base commit: {intel_llvm_mirror_base_commit}")
+
+    run(["git", "-C", args.intel_llvm_dir, "fetch", args.intel_llvm_remote])
+
+    result = run(
+        [
+            "git",
+            "-C",
+            args.intel_llvm_dir,
+            "format-patch",
+            "--relative=unified-runtime",
+            f"--output-directory={args.unified_runtime_dir}",
+            f"{intel_llvm_mirror_base_commit}..{args.intel_llvm_remote}/sycl",
+            "unified-runtime",
+        ],
+        stdout=PIPE,
+    )
+
+    patches = result.stdout.decode().splitlines()
+    if len(patches) == 0:
+        print("There are no patches to apply, exiting.")
+        exit(0)
+
+    print(f"Applying the following patches:\n{'\n'.join(patches)}")
+
+    run(["git", "-C", args.unified_runtime_dir, "am"] + patches)
+
+    result = run(
+        [
+            "git",
+            "-C",
+            args.intel_llvm_dir,
+            "log",
+            "-1",
+            "--format=%H",
+            "unified-runtime",
+        ],
+        stdout=PIPE,
+    )
+
+    new_intel_llvm_mirror_base_commit = result.stdout.decode().strip()
+    print(
+        f"Using new intel/llvm mirror base commit: {new_intel_llvm_mirror_base_commit}"
+    )
+    with open(args.intel_llvm_mirror_base_commit_file, "w") as base_commit_file:
+        base_commit_file.write(f"{new_intel_llvm_mirror_base_commit}\n")
+
+    print("Cleaning up patch files.")
+    for patch in patches:
+        os.remove(patch)
+
+
+if __name__ == "__main__":
+    try:
+        main()
+    except KeyboardInterrupt:
+        exit(130)