This is a follow-up to r207670 (ELF) and r218636 (COFF). Differential Revision: http://reviews.llvm.org/D5622 llvm-svn: 219126
IsSymbolRefDifferenceFullyResolved(). For example, we will now fold away something like: -- _a: ... L0: ... L1: ... .long (L1 - L0) / 2 -- llvm-svn: 122043