src/hotspot/share/opto/compile.cpp

BarrierSetC2

 #include "code/nmethod.hpp"
 #include "compiler/compileBroker.hpp"
 #include "compiler/compileLog.hpp"
 #include "compiler/disassembler.hpp"
 #include "compiler/oopMap.hpp"
+#include "gc/shared/barrierSet.hpp"
+#include "gc/shared/c2/barrierSetC2.hpp"
 #include "memory/resourceArea.hpp"
 #include "opto/addnode.hpp"
 #include "opto/block.hpp"
 #include "opto/c2compiler.hpp"
 #include "opto/callGenerator.hpp"

@@ -635,10 +637,11
                   _save_argument_registers(false),
                   _stub_name(NULL),
                   _stub_function(NULL),
                   _stub_entry_point(NULL),
                   _method(target),
+                  _barrier_set_state(BarrierSet::barrier_set()->barrier_set_c2()->create_barrier_state()),
                   _entry_bci(osr_bci),
                   _initial_gvn(NULL),
                   _for_igvn(NULL),
                   _warm_calls(NULL),
                   _subsume_loads(subsume_loads),

@@ -770,21 +773,16
       // Normal case.
       init_tf(TypeFunc::make(method()));
       StartNode* s = new StartNode(root(), tf()->domain());
       initial_gvn()->set_type_bottom(s);
       init_start(s);
-      if (method()->intrinsic_id() == vmIntrinsics::_Reference_get && UseG1GC) {
+      if (method()->intrinsic_id() == vmIntrinsics::_Reference_get) {
         // With java.lang.ref.reference.get() we must go through the
-        // intrinsic when G1 is enabled - even when get() is the root
+        // intrinsic - even when get() is the root
         // method of the compile - so that, if necessary, the value in
         // the referent field of the reference object gets recorded by
         // the pre-barrier code.
-        // Specifically, if G1 is enabled, the value in the referent
-        // field is recorded by the G1 SATB pre barrier. This will
-        // result in the referent being marked live and the reference
-        // object removed from the list of discovered references during
-        // reference processing.
         cg = find_intrinsic(method(), false);
       }
       if (cg == NULL) {
         float past_uses = method()->interpreter_invocation_count();
         float expected_uses = past_uses;