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150
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1 #!/usr/bin/env python
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2
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252
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3 # Given a -print-before-all and/or -print-after-all -print-module-scope log from
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4 # an opt invocation, chunk it into a series of individual IR files, one for each
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5 # pass invocation. If the log ends with an obvious stack trace, try to split off
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6 # a separate "crashinfo.txt" file leaving only the valid input IR in the last
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7 # chunk. Files are written to current working directory.
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173
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8
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150
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9 import sys
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252
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10 import re
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150
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11
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12 chunk_id = 0
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13
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252
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14 # This function gets the pass name from the following line:
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15 # *** IR Dump Before/After PASS_NAME... ***
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16 def get_pass_name(line, prefix):
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17 short_line = line[line.find(prefix) + len(prefix) + 1 :]
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18 return re.split(" |<", short_line)[0]
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19
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20
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21 def print_chunk(lines, prefix, pass_name):
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150
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22 global chunk_id
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252
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23 fname = str(chunk_id).zfill(4) + "-" + prefix + "-" + pass_name + ".ll"
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150
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24 chunk_id = chunk_id + 1
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173
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25 print("writing chunk " + fname + " (" + str(len(lines)) + " lines)")
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150
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26 with open(fname, "w") as f:
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27 f.writelines(lines)
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28
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252
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29
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150
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30 is_dump = False
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31 cur = []
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32 for line in sys.stdin:
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173
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33 if line.startswith("*** IR Dump Before "):
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34 if len(cur) != 0:
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252
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35 print_chunk(cur, "before", pass_name)
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173
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36 cur = []
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150
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37 cur.append("; " + line)
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252
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38 pass_name = get_pass_name(line, "Before")
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39 elif line.startswith("*** IR Dump After "):
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40 if len(cur) != 0:
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41 print_chunk(cur, "after", pass_name)
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42 cur = []
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43 cur.append("; " + line)
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44 pass_name = get_pass_name(line, "After")
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150
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45 elif line.startswith("Stack dump:"):
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252
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46 print_chunk(cur, "crash", pass_name)
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150
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47 cur = []
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48 cur.append(line)
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49 is_dump = True
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50 else:
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51 cur.append(line)
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52
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53 if is_dump:
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173
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54 print("writing crashinfo.txt (" + str(len(cur)) + " lines)")
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150
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55 with open("crashinfo.txt", "w") as f:
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56 f.writelines(cur)
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57 else:
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252
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58 print_chunk(cur, "last", pass_name)
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