[llvm] [AggressiveInstCombine] Ignore debug instructions when load combining (PR #70200)

[via llvm-commits]

mikaelholmen wrote:

> See https://discourse.llvm.org/t/how-to-enable-the-function-rebase-and-merge/73990/3?u=nikic for a way to land multi-commit PRs in a way that GitHub understands.

Thanks!

https://github.com/llvm/llvm-project/pull/70200