[llvm] [RegisterScavenging] Respect early-clobber when scavenging registers (PR #184814)

[Dominik Steenken via llvm-commits]

dominik-steenken wrote:

Ok, that makes sense. I didn't make the connection between `RestoreAfter` and the circumstances where we want to look at the EC defs. I have created a new pull request containing the change you suggested: https://github.com/llvm/llvm-project/pull/197120 .

https://github.com/llvm/llvm-project/pull/184814