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_LIR.cpp

@@ -1742,6 +1742,8 @@ const char * LIR_Op1::name() const {
       return "unaligned move";
     case lir_move_volatile:
       return "volatile_move";
+    case lir_move_wide:
+      return "wide_move";
     default:
       ShouldNotReachHere();
     return "illegal_op";