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#!/usr/bin/env python3
# Given a -print-before-all -print-module-scope log from an opt invocation,
# chunk it into a series of individual IR files, one for each pass invocation.
# If the log ends with an obvious stack trace, try to split off a separate
# "crashinfo.txt" file leaving only the valid input IR in the last chunk.
# Files are written to current working directory.
from __future__ import print_function
import sys
basename = "chunk-"
chunk_id = 0
def print_chunk(lines):
global chunk_id
global basename
fname = basename + str(chunk_id) + ".ll"
chunk_id = chunk_id + 1
print("writing chunk " + fname + " (" + str(len(lines)) + " lines)")
with open(fname, "w") as f:
f.writelines(lines)
is_dump = False
cur = []
for line in sys.stdin:
if line.startswith("*** IR Dump Before "):
if len(cur) != 0:
print_chunk(cur);
cur = []
cur.append("; " + line)
elif line.startswith("Stack dump:"):
print_chunk(cur);
cur = []
cur.append(line)
is_dump = True
else:
cur.append(line)
if is_dump:
print("writing crashinfo.txt (" + str(len(cur)) + " lines)")
with open("crashinfo.txt", "w") as f:
f.writelines(cur)
else:
print_chunk(cur);
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