llvm-project

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#!/usr/bin/env python3
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"""
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Merge .stats files generated by llvm tools
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merge-stats.py takes as argument a list of stats files to merge
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and output the result on stdout
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Usage:
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  merge-stats.py $(find ./builddir/ -name "*.stats") > total.stats
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"""
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import json
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import sys
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result = {}
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for arg in range(1, len(sys.argv)):
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    with open(sys.argv[arg], "r", encoding="utf-8", errors="ignore") as f:
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        text = f.read()
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        try:
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            data = json.loads(text)
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        except:
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            print("ignored %s: failed to parse" % sys.argv[arg], file=sys.stderr)
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            continue
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        for key in data:
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            if key in result:
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                result[key] += data[key]
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            else:
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                result[key] = data[key]
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out = json.dumps(result, indent=2)
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print(out)
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