Fangrui Song 72b73e23b6 Revert "demangle function names in trace files (#87626)" ...

This reverts commit 0fa20c55b5.

Storing raw symbol names is generally preferred in profile files.
Demangling might lose information. Language frontends might use
demangling schemes not supported by LLVMDemangle
(https://github.com/llvm/llvm-project/issues/45901#issuecomment-2008686663).
In addition, calling `demangle` for each function has a significant
performance overhead (#102222).

I believe that even if we decide to provide a producer-side demangling,
it would not be on by default.

Pull Request: https://github.com/llvm/llvm-project/pull/102274

2024-08-07 12:23:28 -07:00

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