xref: /llvm-project/llvm/test/tools/llvm-reduce/remove-bbs-sequence.py (revision b71edfaa4ec3c998aadb35255ce2f60bba2940b0) 
1import subprocess
2import sys
3
4opt = subprocess.run(
5    ["opt", "-passes=print<loops>", "-disable-output", sys.argv[1]],
6    stdout=subprocess.PIPE,
7    stderr=subprocess.PIPE,
8)
9
10stdout = opt.stdout.decode()
11
12pattern = "Loop at depth 1 containing"
13
14if pattern in opt.stderr.decode():
15    print("This is interesting!")
16    sys.exit(0)
17else:
18    print("This is NOT interesting!")
19    sys.exit(1)
20