[llvm] Add unit tests for size returning new funcs in the MemProf use pass. (PR #105473)

[Snehasish Kumar via llvm-commits]

snehasish wrote:

Looking into the failures that were reported --

* The `libc-x86_64-debian-dbg` and `libc-riscv64-debian-dbg` buildbot failures are unrelated.
* The `llvm-nvptx64-nvidia-ubuntu` and `llvm-nvptx-nvidia-ubuntu` builders have linker undefined errors but they are using gold.
*  The `openmp-offload-sles-build-only` has a CTAD error which doesn't reproduce locally for me.



https://github.com/llvm/llvm-project/pull/105473