src/hotspot/share/opto/node.cpp

rev 54995 : 8224675: Late GC barrier insertion for ZGC
Reviewed-by:

*** 544,553 ****
--- 544,556 ----
      n->as_Call()->clone_jvms(C);
    }
    if (n->is_SafePoint()) {
      n->as_SafePoint()->clone_replaced_nodes();
    }
+   if (n->is_Load()) {
+     n->as_Load()->copy_barrier_info(this);
+   }
    return n;                     // Return the clone
  }
  
  //---------------------------setup_is_top--------------------------------------
  // Call this when changing the top node, to reassert the invariants
*** 562,572 ****
      if (_out == NULL)  _out = NO_OUT_ARRAY;
      assert(!is_top(), "must not be top");
    }
  }
  
- 
  //------------------------------~Node------------------------------------------
  // Fancy destructor; eagerly attempt to reclaim Node numberings and storage
  void Node::destruct() {
    // Eagerly reclaim unique Node numberings
    Compile* compile = Compile::current();
--- 565,574 ----
*** 1452,1468 ****
  }
  
  //------------------------------needs_anti_dependence_check---------------------
  // Nodes which use memory without consuming it, hence need antidependences.
  bool Node::needs_anti_dependence_check() const {
!   if( req() < 2 || (_flags & Flag_needs_anti_dependence_check) == 0 )
      return false;
!   else
      return in(1)->bottom_type()->has_memory();
  }
  
- 
  // Get an integer constant from a ConNode (or CastIINode).
  // Return a default value if there is no apparent constant here.
  const TypeInt* Node::find_int_type() const {
    if (this->is_Type()) {
      return this->as_Type()->type()->isa_int();
--- 1454,1473 ----
  }
  
  //------------------------------needs_anti_dependence_check---------------------
  // Nodes which use memory without consuming it, hence need antidependences.
  bool Node::needs_anti_dependence_check() const {
!   if (req() < 2 || (_flags & Flag_needs_anti_dependence_check) == 0) {
      return false;
!   }
!   BarrierSetC2* bs = BarrierSet::barrier_set()->barrier_set_c2();
!   if (!bs->needs_anti_dependence_check(this)) {
!     return false;
!   }
    return in(1)->bottom_type()->has_memory();
  }
  
  // Get an integer constant from a ConNode (or CastIINode).
  // Return a default value if there is no apparent constant here.
  const TypeInt* Node::find_int_type() const {
    if (this->is_Type()) {
      return this->as_Type()->type()->isa_int();