[llvm] [M68k] fix call frame destruction elimination (PR #107579)

[Min-Yih Hsu via llvm-commits]

mshockwave wrote:

> @mshockwave That commit message looks good now, I guess?

If using Github's web interface to merge, it actually uses the PR description.

(@TechnoElf FYI)

https://github.com/llvm/llvm-project/pull/107579