1 files changed, 56 insertions, 0 deletions
diff --git a/utils/opt-viewer/opt-stats.py b/utils/opt-viewer/opt-stats.py
new file mode 100755
index 0000000000000..b22a052a737a1
--- /dev/null
+++ b/utils/opt-viewer/opt-stats.py
@@ -0,0 +1,56 @@
+#!/usr/bin/env python2.7
+
+from __future__ import print_function
+
+desc = '''Generate statistics about optimization records from the YAML files
+generated with -fsave-optimization-record and -fdiagnostics-show-hotness.
+
+The tools requires PyYAML and Pygments Python packages.'''
+
+import optrecord
+import argparse
+import operator
+from collections import defaultdict
+from multiprocessing import cpu_count, Pool
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description=desc)
+    parser.add_argument('yaml_files', nargs='+')
+    parser.add_argument(
+        '--jobs',
+        '-j',
+        default=cpu_count(),
+        type=int,
+        help='Max job count (defaults to current CPU count)')
+    args = parser.parse_args()
+
+    if len(args.yaml_files) == 0:
+        parser.print_help()
+        sys.exit(1)
+
+    if args.jobs == 1:
+        pmap = map
+    else:
+        pool = Pool(processes=args.jobs)
+        pmap = pool.map
+
+    all_remarks, file_remarks, _ = optrecord.gather_results(pmap, args.yaml_files)
+
+    bypass = defaultdict(int)
+    byname = defaultdict(int)
+    for r in all_remarks.itervalues():
+        bypass[r.Pass] += 1
+        byname[r.Pass + "/" + r.Name] += 1
+
+    total = len(all_remarks)
+    print("{:24s} {:10d}\n".format("Total number of remarks", total))
+
+    print("Top 10 remarks by pass:")
+    for (passname, count) in sorted(bypass.items(), key=operator.itemgetter(1),
+                                    reverse=True)[:10]:
+        print("  {:30s} {:2.0f}%". format(passname, count * 100. / total))
+
+    print("\nTop 10 remarks:")
+    for (name, count) in sorted(byname.items(), key=operator.itemgetter(1),
+                                reverse=True)[:10]:
+        print("  {:30s} {:2.0f}%". format(name, count * 100. / total))