[PM] Teach PreservedAnalyses to have an `allInSet` static factory
function template to simplify building a quick object with a set marked
as preserved.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307493 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed