[utils] Fix update scripts output when run on python3.
This fixes a "bytes-like object is required, not 'str'" python3 error I hit on update_llc_test_checks.py (but present on the other scripts as well) by matching what update_mca_test_checks.py already does, plus I've added an explicit 'utf-8' encoding.
llvm-svn: 352633
diff --git a/llvm/utils/update_mca_test_checks.py b/llvm/utils/update_mca_test_checks.py
index 06fd655..87ac19b 100755
--- a/llvm/utils/update_mca_test_checks.py
+++ b/llvm/utils/update_mca_test_checks.py
@@ -551,7 +551,7 @@
'Writing {} lines to {}...\n\n'.format(len(output_lines), test_path))
with open(test_path, 'wb') as f:
- f.writelines(['{}\n'.format(l).encode() for l in output_lines])
+ f.writelines(['{}\n'.format(l).encode('utf-8') for l in output_lines])
def main():
args = _parse_args()