[InstCombine] Don't sink if it would require dropping deref assumptio…#11828

fhahn wants to merge 1 commit intoswiftlang:swift/release/6.3swiftlang/llvm-project:swift/release/6.3from

fhahn:pick-deref-ic-sinkingfhahn/llvm-project:pick-deref-ic-sinkingCopy head branch name to clipboard