src/hotspot/share/opto/loopopts.cpp

*** 1013,1022 ****
--- 1013,1027 ----
      if (n->is_Phi()) {
        for (DUIterator_Fast jmax, j = n->fast_outs(jmax); j < jmax; j++) {
          Node* m = n->fast_out(j);
          if (m->is_FastLock())
            return false;
+         if (m->is_ValueType()) {
+           // TODO this breaks optimizations!
+           // Value types should not be split through phis
+           //return false;
+         }
  #ifdef _LP64
          if (m->Opcode() == Op_ConvI2L)
            return false;
          if (m->is_CastII() && m->isa_CastII()->has_range_check()) {
            return false;