# HG changeset patch
# User shade
# Date 1560523678 -7200
# Node ID b444bbe5c45c53f7349dceeebd0c2bb41c3bcd41
# Parent  5dcab10ebfbedadf8fe86631bb2ee31472e5a433
8225743: Remove ShenandoahBarrierSetC2::escape_is_barrier_node and related GC interface
Reviewed-by: roland, eosterlund

diff -r 5dcab10ebfbe -r b444bbe5c45c src/hotspot/share/gc/shared/c2/barrierSetC2.hpp
--- a/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Fri Jun 14 13:26:52 2019 +0200
+++ b/src/hotspot/share/gc/shared/c2/barrierSetC2.hpp	Fri Jun 14 16:47:58 2019 +0200
@@ -308,7 +308,6 @@
   virtual bool escape_add_to_con_graph(ConnectionGraph* conn_graph, PhaseGVN* gvn, Unique_Node_List* delayed_worklist, Node* n, uint opcode) const { return false; }
   virtual bool escape_add_final_edges(ConnectionGraph* conn_graph, PhaseGVN* gvn, Node* n, uint opcode) const { return false; }
   virtual bool escape_has_out_with_unsafe_object(Node* n) const { return false; }
-  virtual bool escape_is_barrier_node(Node* n) const { return false; }
 
   virtual bool matcher_find_shared_visit(Matcher* matcher, Matcher::MStack& mstack, Node* n, uint opcode, bool& mem_op, int& mem_addr_idx) const { return false; };
   virtual bool matcher_find_shared_post_visit(Matcher* matcher, Node* n, uint opcode) const { return false; };
diff -r 5dcab10ebfbe -r b444bbe5c45c src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp
--- a/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp	Fri Jun 14 13:26:52 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp	Fri Jun 14 16:47:58 2019 +0200
@@ -1194,10 +1194,6 @@
 
 }
 
-bool ShenandoahBarrierSetC2::escape_is_barrier_node(Node* n) const {
-  return n->Opcode() == Op_ShenandoahLoadReferenceBarrier;
-}
-
 bool ShenandoahBarrierSetC2::matcher_find_shared_post_visit(Matcher* matcher, Node* n, uint opcode) const {
   switch (opcode) {
     case Op_ShenandoahCompareAndExchangeP:
diff -r 5dcab10ebfbe -r b444bbe5c45c src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.hpp
--- a/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.hpp	Fri Jun 14 13:26:52 2019 +0200
+++ b/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.hpp	Fri Jun 14 16:47:58 2019 +0200
@@ -144,7 +144,6 @@
   virtual bool escape_add_to_con_graph(ConnectionGraph* conn_graph, PhaseGVN* gvn, Unique_Node_List* delayed_worklist, Node* n, uint opcode) const;
   virtual bool escape_add_final_edges(ConnectionGraph* conn_graph, PhaseGVN* gvn, Node* n, uint opcode) const;
   virtual bool escape_has_out_with_unsafe_object(Node* n) const;
-  virtual bool escape_is_barrier_node(Node* n) const;
 
   virtual bool matcher_find_shared_post_visit(Matcher* matcher, Node* n, uint opcode) const;
   virtual bool matcher_is_store_load_barrier(Node* x, uint xop) const;
diff -r 5dcab10ebfbe -r b444bbe5c45c src/hotspot/share/opto/escape.cpp
--- a/src/hotspot/share/opto/escape.cpp	Fri Jun 14 13:26:52 2019 +0200
+++ b/src/hotspot/share/opto/escape.cpp	Fri Jun 14 16:47:58 2019 +0200
@@ -2346,8 +2346,7 @@
       assert(opcode == Op_ConP || opcode == Op_ThreadLocal ||
              opcode == Op_CastX2P || uncast_base->is_DecodeNarrowPtr() ||
              (uncast_base->is_Mem() && (uncast_base->bottom_type()->isa_rawptr() != NULL)) ||
-             (uncast_base->is_Proj() && uncast_base->in(0)->is_Allocate()) ||
-             BarrierSet::barrier_set()->barrier_set_c2()->escape_is_barrier_node(uncast_base), "sanity");
+             (uncast_base->is_Proj() && uncast_base->in(0)->is_Allocate()), "sanity");
     }
   }
   return base;
@@ -3085,7 +3084,6 @@
                n->is_CheckCastPP() ||
                n->is_EncodeP() ||
                n->is_DecodeN() ||
-               BarrierSet::barrier_set()->barrier_set_c2()->escape_is_barrier_node(n) ||
                (n->is_ConstraintCast() && n->Opcode() == Op_CastPP)) {
       if (visited.test_set(n->_idx)) {
         assert(n->is_Phi(), "loops only through Phi's");
@@ -3156,7 +3154,6 @@
                  use->is_CheckCastPP() ||
                  use->is_EncodeNarrowPtr() ||
                  use->is_DecodeNarrowPtr() ||
-                 BarrierSet::barrier_set()->barrier_set_c2()->escape_is_barrier_node(use) ||
                  (use->is_ConstraintCast() && use->Opcode() == Op_CastPP)) {
         alloc_worklist.append_if_missing(use);
 #ifdef ASSERT