Index: llvm/trunk/utils/extract_vplan.py =================================================================== --- llvm/trunk/utils/extract_vplan.py +++ llvm/trunk/utils/extract_vplan.py @@ -0,0 +1,46 @@ +#!/usr/bin/env python + +# This script extracts the VPlan digraphs from the vectoriser debug messages +# and saves them in individual dot files (one for each plan). Optionally, and +# providing 'dot' is installed, it can also render the dot into a PNG file. + +import sys +import re +import argparse +import shutil +import subprocess + +parser = argparse.ArgumentParser() +parser.add_argument('--png', action='store_true') +args = parser.parse_args() + +dot = shutil.which('dot') +if args.png and not dot: + raise RuntimeError("Can't export to PNG without 'dot' in the system") + +pattern = re.compile(r"(digraph VPlan {.*?\n})",re.DOTALL) +matches = re.findall(pattern, sys.stdin.read()) + +for vplan in matches: + m = re.search("graph \[.+(VF=.+,UF.+), ", vplan) + if not m: + raise ValueError("Can't get the right VPlan name") + name = re.sub('[^a-zA-Z0-9]', '', m.group(1)) + + if args.png: + filename = 'VPlan' + name + '.png' + print("Exporting " + name + " to PNG via dot: " + filename) + p = subprocess.Popen([dot, '-Tpng', '-o', filename], + encoding='utf-8', + stdin=subprocess.PIPE, + stdout=subprocess.PIPE, + stderr=subprocess.PIPE) + out, err = p.communicate(input=vplan) + if err: + raise RuntimeError("Error running dot: " + err) + + else: + filename = 'VPlan' + name + '.dot' + print("Exporting " + name + " to DOT: " + filename) + with open(filename, 'w') as out: + out.write(vplan)