properlyDominates() shouldn't be used as sort key. It causes different output between stdlibc++ and libc++. Instead, I introduced RPOT. In most cases, it works for CSE. llvm-svn: 318743
properlyDominates() shouldn't be used as sort key. It causes different output between stdlibc++ and libc++. Instead, I introduced RPOT. In most cases, it works for CSE. llvm-svn: 318743