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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/code_generator.h" | 5 #include "vm/code_generator.h" |
6 | 6 |
7 #include "vm/assembler.h" | 7 #include "vm/assembler.h" |
8 #include "vm/ast.h" | 8 #include "vm/ast.h" |
9 #include "vm/bigint_operations.h" | 9 #include "vm/bigint_operations.h" |
10 #include "vm/code_patcher.h" | 10 #include "vm/code_patcher.h" |
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871 const GrowableArray<const Instance*>& args, | 871 const GrowableArray<const Instance*>& args, |
872 const ICData& ic_data, | 872 const ICData& ic_data, |
873 const Array& args_descriptor_array) { | 873 const Array& args_descriptor_array) { |
874 const Instance& receiver = *args[0]; | 874 const Instance& receiver = *args[0]; |
875 const Code& target_code = | 875 const Code& target_code = |
876 Code::Handle(ResolveCompileInstanceCallTarget(receiver, ic_data)); | 876 Code::Handle(ResolveCompileInstanceCallTarget(receiver, ic_data)); |
877 if (target_code.IsNull()) { | 877 if (target_code.IsNull()) { |
878 // Let the megamorphic stub handle special cases: NoSuchMethod, | 878 // Let the megamorphic stub handle special cases: NoSuchMethod, |
879 // closure calls. | 879 // closure calls. |
880 if (FLAG_trace_ic) { | 880 if (FLAG_trace_ic) { |
881 OS::PrintErr("InlineCacheMissHandler NULL code for %s receiver: %s\n", | 881 OS::PrintErr("InlineCacheMissHandler NULL code for receiver: %s\n", |
882 String::Handle(ic_data.target_name()).ToCString(), | 882 receiver.ToCString()); |
883 receiver.ToCString()); | |
884 } | 883 } |
885 return Function::null(); | 884 return Function::null(); |
886 } | 885 } |
887 const Function& target_function = | 886 const Function& target_function = |
888 Function::Handle(target_code.function()); | 887 Function::Handle(target_code.function()); |
889 ASSERT(!target_function.IsNull()); | 888 ASSERT(!target_function.IsNull()); |
890 if (args.length() == 1) { | 889 if (args.length() == 1) { |
891 ic_data.AddReceiverCheck(args[0]->GetClassId(), target_function); | 890 ic_data.AddReceiverCheck(args[0]->GetClassId(), target_function); |
892 } else { | 891 } else { |
893 GrowableArray<intptr_t> class_ids(args.length()); | 892 GrowableArray<intptr_t> class_ids(args.length()); |
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1148 Object* result) { | 1147 Object* result) { |
1149 // 1. Check if there is a getter with the same name. | 1148 // 1. Check if there is a getter with the same name. |
1150 const String& getter_name = String::Handle(Field::GetterName(target_name)); | 1149 const String& getter_name = String::Handle(Field::GetterName(target_name)); |
1151 const int kNumArguments = 1; | 1150 const int kNumArguments = 1; |
1152 const int kNumNamedArguments = 0; | 1151 const int kNumNamedArguments = 0; |
1153 const Function& getter = Function::Handle( | 1152 const Function& getter = Function::Handle( |
1154 Resolver::ResolveDynamicForReceiverClass(receiver_class, | 1153 Resolver::ResolveDynamicForReceiverClass(receiver_class, |
1155 getter_name, | 1154 getter_name, |
1156 kNumArguments, | 1155 kNumArguments, |
1157 kNumNamedArguments)); | 1156 kNumNamedArguments)); |
1158 if (getter.IsNull() || | 1157 if (getter.IsNull() || getter.IsMethodExtractor()) { |
1159 getter.IsMethodExtractor() || | |
1160 getter.IsNoSuchMethodDispatcher()) { | |
1161 return false; | 1158 return false; |
1162 } | 1159 } |
1163 | 1160 |
1164 // 2. Invoke the getter. | 1161 // 2. Invoke the getter. |
1165 const Array& args = Array::Handle(Array::New(kNumArguments)); | 1162 const Array& args = Array::Handle(Array::New(kNumArguments)); |
1166 args.SetAt(0, receiver); | 1163 args.SetAt(0, receiver); |
1167 const Object& value = Object::Handle(DartEntry::InvokeFunction(getter, args)); | 1164 const Object& value = Object::Handle(DartEntry::InvokeFunction(getter, args)); |
1168 | 1165 |
1169 // 3. If the getter threw an exception, treat it as no such method. | 1166 // 3. If the getter threw an exception, treat it as no such method. |
1170 if (value.IsUnhandledException()) return false; | 1167 if (value.IsUnhandledException()) return false; |
1171 | 1168 |
1172 // 4. If there was some other error, propagate it. | 1169 // 4. If there was some other error, propagate it. |
1173 CheckResultError(value); | 1170 CheckResultError(value); |
1174 | 1171 |
1175 // 5. Invoke the value as a closure. | 1172 // 5. Invoke the value as a closure. |
1176 Instance& instance = Instance::Handle(); | 1173 Instance& instance = Instance::Handle(); |
1177 instance ^= value.raw(); | 1174 instance ^= value.raw(); |
1178 arguments.SetAt(0, instance); | 1175 arguments.SetAt(0, instance); |
1179 *result = DartEntry::InvokeClosure(arguments, arguments_descriptor); | 1176 *result = DartEntry::InvokeClosure(arguments, arguments_descriptor); |
1180 CheckResultError(*result); | 1177 CheckResultError(*result); |
1181 return true; | 1178 return true; |
1182 } | 1179 } |
1183 | 1180 |
1184 | 1181 |
1185 // Create a method for noSuchMethod invocation and attach it to the receiver | |
1186 // class. | |
1187 static RawFunction* CreateNoSuchMethodDispatcher( | |
1188 const String& target_name, | |
1189 const Class& receiver_class, | |
1190 const Array& arguments_descriptor) { | |
1191 Function& invocation = Function::Handle( | |
1192 Function::New(String::Handle(Symbols::New(target_name)), | |
1193 RawFunction::kNoSuchMethodDispatcher, | |
1194 false, // Not static. | |
1195 false, // Not const. | |
1196 false, // Not abstract. | |
1197 false, // Not external. | |
1198 receiver_class, | |
1199 0)); // No token position. | |
1200 | |
1201 // Initialize signature: receiver is a single fixed parameter. | |
1202 const intptr_t kNumParameters = 1; | |
1203 invocation.set_num_fixed_parameters(kNumParameters); | |
1204 invocation.SetNumOptionalParameters(0, 0); | |
1205 invocation.set_parameter_types(Array::Handle(Array::New(kNumParameters, | |
1206 Heap::kOld))); | |
1207 invocation.set_parameter_names(Array::Handle(Array::New(kNumParameters, | |
1208 Heap::kOld))); | |
1209 invocation.SetParameterTypeAt(0, Type::Handle(Type::DynamicType())); | |
1210 invocation.SetParameterNameAt(0, Symbols::This()); | |
1211 invocation.set_result_type(Type::Handle(Type::DynamicType())); | |
1212 invocation.set_is_visible(false); // Not visible in stack trace. | |
1213 | |
1214 receiver_class.AddFunction(invocation); | |
1215 | |
1216 return invocation.raw(); | |
1217 } | |
1218 | |
1219 | |
1220 // The IC miss handler has failed to find a (cacheable) instance function to | 1182 // The IC miss handler has failed to find a (cacheable) instance function to |
1221 // invoke. Handle three possibilities: | 1183 // invoke. Handle three possibilities: |
1222 // | 1184 // |
1223 // 1. If the call was a getter o.f, there may be an instance function with | 1185 // 1. If the call was a getter o.f, there may be an instance function with |
1224 // the same name. If so, create an implicit closure and return it. | 1186 // the same name. If so, create an implicit closure and return it. |
1225 // | 1187 // |
1226 // 2. If the call was an instance call o.f(...), there may be a getter with | 1188 // 2. If the call was an instance call o.f(...), there may be a getter with |
1227 // the same name. If so, invoke it. If the value is a closure, invoke | 1189 // the same name. If so, invoke it. If the value is a closure, invoke |
1228 // it with the given arguments. If the value is a non-closure, attempt | 1190 // it with the given arguments. If the value is a non-closure, attempt |
1229 // to invoke "call" on it. | 1191 // to invoke "call" on it. |
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1244 } | 1206 } |
1245 const String& target_name = String::Handle(ic_data.target_name()); | 1207 const String& target_name = String::Handle(ic_data.target_name()); |
1246 | 1208 |
1247 Object& result = Object::Handle(); | 1209 Object& result = Object::Handle(); |
1248 if (!ResolveCallThroughGetter(receiver, | 1210 if (!ResolveCallThroughGetter(receiver, |
1249 receiver_class, | 1211 receiver_class, |
1250 target_name, | 1212 target_name, |
1251 args_descriptor, | 1213 args_descriptor, |
1252 args, | 1214 args, |
1253 &result)) { | 1215 &result)) { |
1254 ArgumentsDescriptor desc(args_descriptor); | 1216 result = DartEntry::InvokeNoSuchMethod(receiver, |
1255 // TODO(fschneider): Handle multiple arguments. | 1217 target_name, |
1256 if ((desc.Count() == 1) && (desc.PositionalCount() == 1)) { | 1218 args, |
1257 // Create Function for noSuchMethodInvocation and add it to the class. | 1219 args_descriptor); |
1258 Function& target_function = Function::Handle(); | |
1259 target_function ^= CreateNoSuchMethodDispatcher(target_name, | |
1260 receiver_class, | |
1261 args_descriptor); | |
1262 | |
1263 // Update IC data. | |
1264 ASSERT(!target_function.IsNull()); | |
1265 ic_data.AddReceiverCheck(receiver.GetClassId(), target_function); | |
1266 if (FLAG_trace_ic) { | |
1267 OS::PrintErr("NoSuchMethod IC miss: adding <%s> id:%"Pd" -> <%s>\n", | |
1268 Class::Handle(receiver.clazz()).ToCString(), | |
1269 receiver.GetClassId(), | |
1270 target_function.ToCString()); | |
1271 } | |
1272 result = | |
1273 DartEntry::InvokeFunction(target_function, args, args_descriptor); | |
1274 } else { | |
1275 result = DartEntry::InvokeNoSuchMethod(receiver, | |
1276 target_name, | |
1277 args, | |
1278 args_descriptor); | |
1279 } | |
1280 } | 1220 } |
1281 CheckResultError(result); | 1221 CheckResultError(result); |
1282 arguments.SetReturn(result); | 1222 arguments.SetReturn(result); |
1283 } | 1223 } |
1284 | 1224 |
1285 | 1225 |
1286 static bool CanOptimizeFunction(const Function& function, Isolate* isolate) { | 1226 static bool CanOptimizeFunction(const Function& function, Isolate* isolate) { |
1287 const intptr_t kLowInvocationCount = -100000000; | 1227 const intptr_t kLowInvocationCount = -100000000; |
1288 if (isolate->debugger()->HasBreakpoint(function)) { | 1228 if (isolate->debugger()->HasBreakpoint(function)) { |
1289 // We cannot set breakpoints in optimized code, so do not optimize | 1229 // We cannot set breakpoints in optimized code, so do not optimize |
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1863 // Arg1: Value that is being stored. | 1803 // Arg1: Value that is being stored. |
1864 DEFINE_RUNTIME_ENTRY(UpdateFieldCid, 2) { | 1804 DEFINE_RUNTIME_ENTRY(UpdateFieldCid, 2) { |
1865 ASSERT(arguments.ArgCount() == kUpdateFieldCidRuntimeEntry.argument_count()); | 1805 ASSERT(arguments.ArgCount() == kUpdateFieldCidRuntimeEntry.argument_count()); |
1866 const Field& field = Field::CheckedHandle(arguments.ArgAt(0)); | 1806 const Field& field = Field::CheckedHandle(arguments.ArgAt(0)); |
1867 const Object& value = Object::Handle(arguments.ArgAt(1)); | 1807 const Object& value = Object::Handle(arguments.ArgAt(1)); |
1868 | 1808 |
1869 field.UpdateCid(value.GetClassId()); | 1809 field.UpdateCid(value.GetClassId()); |
1870 } | 1810 } |
1871 | 1811 |
1872 } // namespace dart | 1812 } // namespace dart |
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