JDevlieghere added a comment.

In https://reviews.llvm.org/D22725#493940, @aaron.ballman wrote:

> > Using std::copy opens up the possibility of type-aware optimizations which 
> > are not possible with memcpy.
>
>
> To my knowledge, those type-aware optimizations are for transforming copies 
> involving trivially-copyable types into calls to memcpy(). What other 
> optimizations does this check enable?


I might be mistaken, but I understood that a call to std::copy (whether or not 
specialized for certain types) might get inlined, while a call to memcpy is 
typically not.


Repository:
  rL LLVM

https://reviews.llvm.org/D22725



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