llvm/utils/merge-stats.py

   1 #!/usr/bin/env python3
   2 """
   3 Merge .stats files generated by llvm tools
   4
   5 merge-stats.py takes as argument a list of stats files to merge
   6 and output the result on stdout
   7
   8 Usage:
   9   merge-stats.py $(find ./builddir/ -name "*.stats") > total.stats
  10 """
  11
  12 import json
  13 import sys
  14
  15 result = {}
  16
  17 for arg in range(1, len(sys.argv)):
  18     with open(sys.argv[arg], "r", encoding="utf-8", errors="ignore") as f:
  19         text = f.read()
  20         try:
  21             data = json.loads(text)
  22         except:
  23             print("ignored %s: failed to parse" % sys.argv[arg], file=sys.stderr)
  24             continue
  25         for key in data:
  26             if key in result:
  27                 result[key] += data[key]
  28             else:
  29                 result[key] = data[key]
  30
  31 out = json.dumps(result, indent=2)
  32 print(out)