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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 receiver: %s\n", | 881 OS::PrintErr("InlineCacheMissHandler NULL code for %s receiver: %s\n", |
882 receiver.ToCString()); | 882 String::Handle(ic_data.target_name()).ToCString(), |
| 883 receiver.ToCString()); |
883 } | 884 } |
884 return Function::null(); | 885 return Function::null(); |
885 } | 886 } |
886 const Function& target_function = | 887 const Function& target_function = |
887 Function::Handle(target_code.function()); | 888 Function::Handle(target_code.function()); |
888 ASSERT(!target_function.IsNull()); | 889 ASSERT(!target_function.IsNull()); |
889 if (args.length() == 1) { | 890 if (args.length() == 1) { |
890 ic_data.AddReceiverCheck(args[0]->GetClassId(), target_function); | 891 ic_data.AddReceiverCheck(args[0]->GetClassId(), target_function); |
891 } else { | 892 } else { |
892 GrowableArray<intptr_t> class_ids(args.length()); | 893 GrowableArray<intptr_t> class_ids(args.length()); |
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1147 Object* result) { | 1148 Object* result) { |
1148 // 1. Check if there is a getter with the same name. | 1149 // 1. Check if there is a getter with the same name. |
1149 const String& getter_name = String::Handle(Field::GetterName(target_name)); | 1150 const String& getter_name = String::Handle(Field::GetterName(target_name)); |
1150 const int kNumArguments = 1; | 1151 const int kNumArguments = 1; |
1151 const int kNumNamedArguments = 0; | 1152 const int kNumNamedArguments = 0; |
1152 const Function& getter = Function::Handle( | 1153 const Function& getter = Function::Handle( |
1153 Resolver::ResolveDynamicForReceiverClass(receiver_class, | 1154 Resolver::ResolveDynamicForReceiverClass(receiver_class, |
1154 getter_name, | 1155 getter_name, |
1155 kNumArguments, | 1156 kNumArguments, |
1156 kNumNamedArguments)); | 1157 kNumNamedArguments)); |
1157 if (getter.IsNull() || getter.IsMethodExtractor()) { | 1158 if (getter.IsNull() || |
| 1159 getter.IsMethodExtractor() || |
| 1160 getter.IsNoSuchMethodDispatcher()) { |
1158 return false; | 1161 return false; |
1159 } | 1162 } |
1160 | 1163 |
1161 // 2. Invoke the getter. | 1164 // 2. Invoke the getter. |
1162 const Array& args = Array::Handle(Array::New(kNumArguments)); | 1165 const Array& args = Array::Handle(Array::New(kNumArguments)); |
1163 args.SetAt(0, receiver); | 1166 args.SetAt(0, receiver); |
1164 const Object& value = Object::Handle(DartEntry::InvokeFunction(getter, args)); | 1167 const Object& value = Object::Handle(DartEntry::InvokeFunction(getter, args)); |
1165 | 1168 |
1166 // 3. If the getter threw an exception, treat it as no such method. | 1169 // 3. If the getter threw an exception, treat it as no such method. |
1167 if (value.IsUnhandledException()) return false; | 1170 if (value.IsUnhandledException()) return false; |
1168 | 1171 |
1169 // 4. If there was some other error, propagate it. | 1172 // 4. If there was some other error, propagate it. |
1170 CheckResultError(value); | 1173 CheckResultError(value); |
1171 | 1174 |
1172 // 5. Invoke the value as a closure. | 1175 // 5. Invoke the value as a closure. |
1173 Instance& instance = Instance::Handle(); | 1176 Instance& instance = Instance::Handle(); |
1174 instance ^= value.raw(); | 1177 instance ^= value.raw(); |
1175 arguments.SetAt(0, instance); | 1178 arguments.SetAt(0, instance); |
1176 *result = DartEntry::InvokeClosure(arguments, arguments_descriptor); | 1179 *result = DartEntry::InvokeClosure(arguments, arguments_descriptor); |
1177 CheckResultError(*result); | 1180 CheckResultError(*result); |
1178 return true; | 1181 return true; |
1179 } | 1182 } |
1180 | 1183 |
1181 | 1184 |
| 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 |
1182 // The IC miss handler has failed to find a (cacheable) instance function to | 1220 // The IC miss handler has failed to find a (cacheable) instance function to |
1183 // invoke. Handle three possibilities: | 1221 // invoke. Handle three possibilities: |
1184 // | 1222 // |
1185 // 1. If the call was a getter o.f, there may be an instance function with | 1223 // 1. If the call was a getter o.f, there may be an instance function with |
1186 // the same name. If so, create an implicit closure and return it. | 1224 // the same name. If so, create an implicit closure and return it. |
1187 // | 1225 // |
1188 // 2. If the call was an instance call o.f(...), there may be a getter with | 1226 // 2. If the call was an instance call o.f(...), there may be a getter with |
1189 // the same name. If so, invoke it. If the value is a closure, invoke | 1227 // the same name. If so, invoke it. If the value is a closure, invoke |
1190 // it with the given arguments. If the value is a non-closure, attempt | 1228 // it with the given arguments. If the value is a non-closure, attempt |
1191 // to invoke "call" on it. | 1229 // to invoke "call" on it. |
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1206 } | 1244 } |
1207 const String& target_name = String::Handle(ic_data.target_name()); | 1245 const String& target_name = String::Handle(ic_data.target_name()); |
1208 | 1246 |
1209 Object& result = Object::Handle(); | 1247 Object& result = Object::Handle(); |
1210 if (!ResolveCallThroughGetter(receiver, | 1248 if (!ResolveCallThroughGetter(receiver, |
1211 receiver_class, | 1249 receiver_class, |
1212 target_name, | 1250 target_name, |
1213 args_descriptor, | 1251 args_descriptor, |
1214 args, | 1252 args, |
1215 &result)) { | 1253 &result)) { |
1216 result = DartEntry::InvokeNoSuchMethod(receiver, | 1254 ArgumentsDescriptor desc(args_descriptor); |
1217 target_name, | 1255 Function& target_function = Function::Handle( |
1218 args, | 1256 Resolver::ResolveDynamicAnyArgs(receiver_class, target_name)); |
1219 args_descriptor); | 1257 // Check number of arguments and check that there is not already a method |
| 1258 // with the same name present. |
| 1259 // TODO(fschneider): Handle multiple arguments. |
| 1260 if (target_function.IsNull() && |
| 1261 (desc.Count() == 1) && (desc.PositionalCount() == 1)) { |
| 1262 // Create Function for noSuchMethodInvocation and add it to the class. |
| 1263 target_function ^= CreateNoSuchMethodDispatcher(target_name, |
| 1264 receiver_class, |
| 1265 args_descriptor); |
| 1266 |
| 1267 // Update IC data. |
| 1268 ASSERT(!target_function.IsNull()); |
| 1269 ic_data.AddReceiverCheck(receiver.GetClassId(), target_function); |
| 1270 if (FLAG_trace_ic) { |
| 1271 OS::PrintErr("NoSuchMethod IC miss: adding <%s> id:%"Pd" -> <%s>\n", |
| 1272 Class::Handle(receiver.clazz()).ToCString(), |
| 1273 receiver.GetClassId(), |
| 1274 target_function.ToCString()); |
| 1275 } |
| 1276 result = |
| 1277 DartEntry::InvokeFunction(target_function, args, args_descriptor); |
| 1278 } else { |
| 1279 result = DartEntry::InvokeNoSuchMethod(receiver, |
| 1280 target_name, |
| 1281 args, |
| 1282 args_descriptor); |
| 1283 } |
1220 } | 1284 } |
1221 CheckResultError(result); | 1285 CheckResultError(result); |
1222 arguments.SetReturn(result); | 1286 arguments.SetReturn(result); |
1223 } | 1287 } |
1224 | 1288 |
1225 | 1289 |
1226 static bool CanOptimizeFunction(const Function& function, Isolate* isolate) { | 1290 static bool CanOptimizeFunction(const Function& function, Isolate* isolate) { |
1227 const intptr_t kLowInvocationCount = -100000000; | 1291 const intptr_t kLowInvocationCount = -100000000; |
1228 if (isolate->debugger()->HasBreakpoint(function)) { | 1292 if (isolate->debugger()->HasBreakpoint(function)) { |
1229 // We cannot set breakpoints in optimized code, so do not optimize | 1293 // We cannot set breakpoints in optimized code, so do not optimize |
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1803 // Arg1: Value that is being stored. | 1867 // Arg1: Value that is being stored. |
1804 DEFINE_RUNTIME_ENTRY(UpdateFieldCid, 2) { | 1868 DEFINE_RUNTIME_ENTRY(UpdateFieldCid, 2) { |
1805 ASSERT(arguments.ArgCount() == kUpdateFieldCidRuntimeEntry.argument_count()); | 1869 ASSERT(arguments.ArgCount() == kUpdateFieldCidRuntimeEntry.argument_count()); |
1806 const Field& field = Field::CheckedHandle(arguments.ArgAt(0)); | 1870 const Field& field = Field::CheckedHandle(arguments.ArgAt(0)); |
1807 const Object& value = Object::Handle(arguments.ArgAt(1)); | 1871 const Object& value = Object::Handle(arguments.ArgAt(1)); |
1808 | 1872 |
1809 field.UpdateCid(value.GetClassId()); | 1873 field.UpdateCid(value.GetClassId()); |
1810 } | 1874 } |
1811 | 1875 |
1812 } // namespace dart | 1876 } // namespace dart |
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