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[llvm-mca][UpdateTestChecks] Prevent an IndexError being raised when given empty input

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llvm-svn: 333894
This commit is contained in:
Greg Bedwell 2018-06-04 12:30:10 +00:00
parent 26a43d8b5a
commit 75a3de70a1
1 changed files with 1 additions and 1 deletions
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2
utils/update_mca_test_checks.py
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@ -409,7 +409,7 @@ def _write_output(test_path, input_lines, prefix_list, block_infos, # noqa
continue
# Add a blank line before the new checks if required.
if output_lines[-1]:
if len(output_lines) > 0 and output_lines[-1]:
output_lines.append('')
output_check_lines = []