8266074: Vtable-based CHA implementation

Reviewed-by: kvn, jrose, dlong

Author: Vladimir Ivanov

src/hotspot/share/c1/c1_GraphBuilder.cpp

@@ -2026,7 +2026,7 @@ void GraphBuilder::invoke(Bytecodes::Code code) {
       // by dynamic class loading.  Be sure to test the "static" receiver
       // dest_method here, as opposed to the actual receiver, which may
       // falsely lead us to believe that the receiver is final or private.
-      dependency_recorder()->assert_unique_concrete_method(actual_recv, cha_monomorphic_target);
+      dependency_recorder()->assert_unique_concrete_method(actual_recv, cha_monomorphic_target, callee_holder, target);
     }
     code = Bytecodes::_invokespecial;
   }

src/hotspot/share/ci/bcEscapeAnalyzer.cpp

@@ -346,6 +346,9 @@ void BCEscapeAnalyzer::invoke(StateInfo &state, Bytecodes::Code code, ciMethod*
           (code == Bytecodes::_invokevirtual && !target->is_final_method())) {
         _dependencies.append(actual_recv);
         _dependencies.append(inline_target);
+        _dependencies.append(callee_holder);
+        _dependencies.append(target);
+        assert(callee_holder->is_interface() == (code == Bytecodes::_invokeinterface), "sanity");
       }
       _dependencies.appendAll(analyzer.dependencies());
     }
@@ -1495,9 +1498,11 @@ void BCEscapeAnalyzer::copy_dependencies(Dependencies *deps) {
     // callee will trigger recompilation.
     deps->assert_evol_method(method());
   }
-  for (int i = 0; i < _dependencies.length(); i+=2) {
-    ciKlass *k = _dependencies.at(i)->as_klass();
-    ciMethod *m = _dependencies.at(i+1)->as_method();
-    deps->assert_unique_concrete_method(k, m);
+  for (int i = 0; i < _dependencies.length(); i+=4) {
+    ciKlass*  recv_klass      = _dependencies.at(i+0)->as_klass();
+    ciMethod* target          = _dependencies.at(i+1)->as_method();
+    ciKlass*  resolved_klass  = _dependencies.at(i+2)->as_klass();
+    ciMethod* resolved_method = _dependencies.at(i+3)->as_method();
+    deps->assert_unique_concrete_method(recv_klass, target, resolved_klass, resolved_method);
   }
 }

src/hotspot/share/ci/ciMethod.cpp

@@ -714,7 +714,15 @@ ciMethod* ciMethod::find_monomorphic_target(ciInstanceKlass* caller,
   {
     MutexLocker locker(Compile_lock);
     InstanceKlass* context = actual_recv->get_instanceKlass();
-    target = methodHandle(THREAD, Dependencies::find_unique_concrete_method(context, root_m->get_Method()));
+    if (UseVtableBasedCHA) {
+      target = methodHandle(THREAD, Dependencies::find_unique_concrete_method(context,
+                                                                              root_m->get_Method(),
+                                                                              callee_holder->get_Klass(),
+                                                                              this->get_Method()));
+    } else {
+      target = methodHandle(THREAD, Dependencies::find_unique_concrete_method(context, root_m->get_Method()));
+    }
+    assert(target() == NULL || !target()->is_abstract(), "not allowed");
     // %%% Should upgrade this ciMethod API to look for 1 or 2 concrete methods.
   }
 

src/hotspot/share/code/codeCache.cpp

@@ -1184,10 +1184,18 @@ void CodeCache::flush_dependents_on(InstanceKlass* dependee) {
 
   if (number_of_nmethods_with_dependencies() == 0) return;
 
-  KlassDepChange changes(dependee);
+  int marked = 0;
+  if (dependee->is_linked()) {
+    // Class initialization state change.
+    KlassInitDepChange changes(dependee);
+    marked = mark_for_deoptimization(changes);
+  } else {
+    // New class is loaded.
+    NewKlassDepChange changes(dependee);
+    marked = mark_for_deoptimization(changes);
+  }
 
-  // Compute the dependent nmethods
-  if (mark_for_deoptimization(changes) > 0) {
+  if (marked > 0) {
     // At least one nmethod has been marked for deoptimization
     Deoptimization::deoptimize_all_marked();
   }