src/hotspot/share/gc/z/c2/zBarrierSetC2.cpp

rev 52443 : 8213489: GC/C2 abstraction for Compile::final_graph_reshaping()

*** 1433,1442 ****
--- 1433,1465 ----
  
  bool ZBarrierSetC2::array_copy_requires_gc_barriers(bool tightly_coupled_alloc, BasicType type, bool is_clone, ArrayCopyPhase phase) const {
    return type == T_OBJECT || type == T_ARRAY;
  }
  
+ bool ZBarrierSetC2::final_graph_reshaping(Compile* compile, Node* n, uint opcode) const {
+   bool handled;
+   switch (n->Opcode()) {
+     case Op_LoadBarrierSlowReg:
+     case Op_LoadBarrierWeakSlowReg:
+ #ifdef ASSERT
+       if (VerifyOptoOopOffsets) {
+         MemNode* mem  = n->as_Mem();
+         // Check to see if address types have grounded out somehow.
+         const TypeInstPtr* tp = mem->in(MemNode::Address)->bottom_type()->isa_instptr();
+         ciInstanceKlass* k = tp->klass()->as_instance_klass();
+         bool oop_offset_is_sane = k->contains_field_offset(tp->offset());
+         assert(!tp || oop_offset_is_sane, "");
+       }
+ #endif
+       handled = true;
+       break;
+     default:
+       handled = false;
+   }
+   return handled;
+ }
+ 
  // == Verification ==
  
  #ifdef ASSERT
  
  static bool look_for_barrier(Node* n, bool post_parse, VectorSet& visited) {