The problem is in calculating the offset where SIGSEGV that should be turned into NPE can happen.

Before introducing ldrd/strd macrosses in macroAssembler we could rely on code_offset() saved before emitting load/store operation.
However now in case several address modes ldrd/strd macrosses will emit an additional instruction resolving address before real load/store.

The code offset where implicit NPE can happen now can be calculated by sum of code_offset() and value returned by ldrd/strd macrosess.