lib/AST/Decl.cpp

1696 bool NamedDecl::declarationReplaces(NamedDecl *OldD, bool IsKnownNewer) const {
1697   assert(getDeclName() == OldD->getDeclName() && "Declaration name mismatch");
1701   if (OldD->isFromASTFile() && isFromASTFile())
1705   if (OldD->getKind() != getKind())
1721           OldD->getDeclContext()->getRedeclContext()))
1730                cast<UsingDecl>(OldD)->getQualifier());
1736                         cast<UnresolvedUsingValueDecl>(OldD)->getQualifier());
1740     if (getCanonicalDecl() != OldD->getCanonicalDecl())
1746     // Check whether this is actually newer than OldD. We want to keep the
1748     // OldD is usually the previous declaration.
1750       if (D == OldD)
1753       // If we reach the canonical declaration, then OldD is not actually older