Remove some unnecessary explicit special members in Hexagon that, once
removed, allow the other implicit special members to be used without
depending on deprecated features.
llvm-svn: 243825
The standard containers are not designed to be inherited from, as
illustrated by the MSVC hacks for NodeOrdering. No functional change
intended.
llvm-svn: 242616
This includes code that is intended to be target-independent as well
as the Hexagon-specific details. This is just the framework without
any users.
llvm-svn: 241595
