[llvm] [LICM] Fold associative binary ops to promote code hoisting (PR #81608)

[Ricardo Jesus via llvm-commits]

rj-jesus wrote:

> Can you please add a test for AArch64?

@madhur13490 The test would overlap with the one already present. Since the fold is architecture-agnostic I suggest we avoid adding a new (mostly replicated) test case and keep the one we have presently. What do you think?

https://github.com/llvm/llvm-project/pull/81608