[Clang] Mark this pointer in destructors dead_on_return #166276
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This helps to clean up any dead stores that come up at the end of the destructor. The motivating example was a refactoring in libc++'s basic_string implementation in 8dae17b that added a zeroing store into the destructor, causing a large performance regression on an internal workload.
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This helps to clean up any dead stores that come up at the end of the destructor. The motivating example was a refactoring in libc++'s basic_string implementation in 8dae17b that added a zeroing store into the destructor, causing a large performance regression on an internal workload.