6985015: C1 needs to support compressed oops

This change implements compressed oops for C1 for x64 and sparc. The changes are mostly on the codegen level, with a few exceptions when we do access things outside of the heap that are uncompressed from the IR. Compressed oops are now also enabled with tiered.

Reviewed-by: twisti, kvn, never, phh

hotspot/src/share/vm/c1/c1_GraphBuilder.cpp

@@ -2795,7 +2795,7 @@ void GraphBuilder::setup_osr_entry_block() {
       get = append(new UnsafeGetRaw(as_BasicType(local->type()), e,
                                     append(new Constant(new IntConstant(offset))),
                                     0,
-                                    true));
+                                    true /*unaligned*/, true /*wide*/));
     }
     _state->store_local(index, get);
   }