[llvm] [PreISelIntrinsicLowering] Lower bounded memcpy/memmove to masked load/store (PR #212710)

[via llvm-commits]

================

----------------
Harishankar14 wrote:

@RKSimon  do u mind if i attach the fix  for the `Improve llvm.get.active.lank.mask codegen in this PR it self, or do u want me to create a new PR ?

https://github.com/llvm/llvm-project/pull/212710