[llvm-branch-commits] [llvm] [RISCV] Add initial support of memcmp expansion (PR #107548)

[Alex Bradbury via llvm-branch-commits]

asb wrote:

This is perhaps more of a comment for #107824 than for this one, but I think we'd benefit from some level of test coverage for OptForSize to demonstrate that we stick with the libcall in cases where expanding increases code size.  

https://github.com/llvm/llvm-project/pull/107548