Remember to eraseFromParent after replaceAllUsesWith.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217536 91177308-0d34-0410-b5e6-96231b3b80d8
Fix docs reference to inexistent class.

Patch sent via telegraph by TNorthover. Thanks!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217537 91177308-0d34-0410-b5e6-96231b3b80d8
[MergedLoadStoreMotion] Move pass enabling option to PassManagerBuilder



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217538 91177308-0d34-0410-b5e6-96231b3b80d8