src/hotspot/share/opto/compile.cpp

@@ -880,13 +880,15 @@
    }
    if (directive->DumpInlineOption && (ilt() != nullptr)) {
      env()->dump_inline_data(_compile_id);
    }
  
-   // Now that we know the size of all the monitors we can add a fixed slot
-   // for the original deopt pc.
-   int next_slot = fixed_slots() + (sizeof(address) / VMRegImpl::stack_slot_size);
+   // Now that we know the size of all the monitors we can add the fixed slots
+   // for GC barriers and the original deopt pc. All these slots should be able
+   // to fit an address.
+   int reserved_gc_slots = BarrierSet::barrier_set()->barrier_set_c2()->reserved_slots();
+   int next_slot = fixed_slots() + (reserved_gc_slots + 1) * sizeof(address) / VMRegImpl::stack_slot_size;
    set_fixed_slots(next_slot);
  
    // Compute when to use implicit null checks. Used by matching trap based
    // nodes and NullCheck optimization.
    set_allowed_deopt_reasons();