[compiler-rt] [compiler-rt][builtins] Switch to using __builtin_memcpy_inline (PR #69784)

[Alexander Shaposhnikov via llvm-commits]

alexander-shaposhnikov wrote:

I'm under impression that i've seen built bots failures (related to compiler-rt/builtins) on Windows, so unfortunately I suspect I won't be able to land this change.

https://github.com/llvm/llvm-project/pull/69784