llvm-project

b6bf27ef - Avoid expression evaluation in libStdC++ std::vector<bool> synthetic children provider (#108414)

Avoid expression evaluation in libStdC++ std::vector<bool> synthetic children provider (#108414) Our customers is reporting a serious performance issue (expanding a this pointer takes 70 seconds in VSCode) in a specific execution context. Profiling shows the hot path is triggered by an expression evaluation from libStdC++ synthetic children provider for `std::vector<bool>` since it uses `CreateValueFromExpression()`. This PR added a new `SBValue::CreateBoolValue()` API and switch `std::vector<bool>` synthetic children provider to use the new API without performing expression evaluation. Note: there might be other cases of `CreateValueFromExpression()` in our summary/synthetic children providers which I will sweep through in later PRs. With this PR, the customer's scenario reduces from 70 seconds => 50 seconds. I will add other PRs to further optimize the remaining 50 seconds (mostly from type/namespace lookup). Testing: `test/API/functionalities/data-formatter/data-formatter-stl/libstdcpp/vbool/TestDataFormatterStdVBool.py` passes with the PR --------- Co-authored-by: jeffreytan81 <jeffreytan@fb.com>