[clang] [compiler-rt] [lld] [libc] [libcxx] [llvm] [clang-tools-extra] [lldb] [flang] [AMDGPU] Use alias info to relax waitcounts for LDS DMA (PR #74537)

[Matt Arsenault via cfe-commits]

https://github.com/arsenm approved this pull request.

lgtm, but can still fix the -O0 thing 

https://github.com/llvm/llvm-project/pull/74537