[llvm-branch-commits] [clang] [Serialization] Code cleanups and polish 83233 (PR #83237)

[Chuanqi Xu via llvm-branch-commits]

ChuanqiXu9 wrote:

@ilya-biryukov thanks for the high quality reproducer! I've reproduced it and fixed it in the newest commit.

The root cause of the failure is the same with the last time: merging specializations with the same key. The previous fix is not clear since, I just found, the underlying LLVM component OnDiskChainedHashTableGenerator doesn't support insert values with the same key multiple times! The values with the same key have to be inserted once. So I have to merge the table manually in the newest commit. I think this is ready and please test again. Appreciate in ahead.

https://github.com/llvm/llvm-project/pull/83237