Mingming Liu 2c7610cc43 [nfc]Make InstrProfSymtab non-copyable and non-movable (#86882) ...

- The direct use case (in [1]) is to add `llvm::IntervalMap` [2]  and the allocator required by IntervalMap ctor [3]
   to class `InstrProfSymtab` as owned members. The allocator class doesn't have a move-assignment operator; 
   and it's going to take much effort to implement move-assignment operator for the allocator class such that the
   enclosing class is movable.
- There is only one use of compiler-generated move-assignment operator in the repo, which is in 
   CoverageMappingReader.cpp. Luckily it's possible to use std::unique_ptr<InstrProfSymtab> instead, so did the change.

[1] https://github.com/llvm/llvm-project/pull/66825
[2] 4c2f68840e/llvm/include/llvm/ADT/IntervalMap.h (L936)
[3] 4c2f68840e/llvm/include/llvm/ADT/IntervalMap.h (L1041)

2024-03-27 20:40:01 -07:00

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