Add iterator_traits to ImmutableMap and ImmutableSet.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175085 91177308-0d34-0410-b5e6-96231b3b80d8
Hexagon: Use absolute addressing mode loads/stores for global+offset 
instead of redefining separate instructions for them.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175086 91177308-0d34-0410-b5e6-96231b3b80d8