Do not format .td files in Clang; NFC (#182075) We have varying needs for these files. e.g., a diagnostic file is a different kind of file than compiler options which is different than attributes which is different than attribute documentation, etc. So running clang-format over .td files in Clang is not going well in practice because of how often it reformats things unlike the rest of the file. This results in a poor new contributor experience because pre-commit CI tells them the changes are not clang-format clean but we don't want the changes to be clang-format clean and so a reviewer asks them to revert and ignore pre-commit CI. --------- Co-authored-by: Sirraide <aeternalmail@gmail.com>
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