[llvm] [SCEV] Infer loop max trip count from memory accesses (PR #70361)

[Shilei Tian via llvm-commits]

shiltian wrote:

This version can pass llvm test suite w/ the option `-mllvm -scalar-evolution-infer-max-trip-count-from-memory-access=1`.

https://github.com/llvm/llvm-project/pull/70361