[PATCH] D152328: InstrProf - don't emit 64 bit atomic operations on 32 bit platforms

[David Li via Phabricator via llvm-commits]

davidxl added a comment.

Regarding improving performance, it is more about improving the optimized build (profile-use) performance instead of the performance of the instrumented build. This is because the atomic update allows more precise counter update in multi-threaded programs.


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  https://reviews.llvm.org/D152328/new/

https://reviews.llvm.org/D152328