Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 5 | #include "src/ic/handler-compiler.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 7 | #include "src/field-type.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 8 | #include "src/ic/call-optimization.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/ic/ic-inl.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 10 | #include "src/ic/ic.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 11 | #include "src/isolate-inl.h" |
| 12 | #include "src/profiler/cpu-profiler.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 13 | |
| 14 | namespace v8 { |
| 15 | namespace internal { |
| 16 | |
| 17 | |
| 18 | Handle<Code> PropertyHandlerCompiler::Find(Handle<Name> name, |
| 19 | Handle<Map> stub_holder, |
| 20 | Code::Kind kind, |
| 21 | CacheHolderFlag cache_holder, |
| 22 | Code::StubType type) { |
| 23 | Code::Flags flags = Code::ComputeHandlerFlags(kind, type, cache_holder); |
| 24 | Object* probe = stub_holder->FindInCodeCache(*name, flags); |
| 25 | if (probe->IsCode()) return handle(Code::cast(probe)); |
| 26 | return Handle<Code>::null(); |
| 27 | } |
| 28 | |
| 29 | |
| 30 | Handle<Code> NamedLoadHandlerCompiler::ComputeLoadNonexistent( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 31 | Handle<Name> name, Handle<Map> receiver_map) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 32 | Isolate* isolate = name->GetIsolate(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 33 | if (receiver_map->prototype()->IsNull()) { |
| 34 | // TODO(jkummerow/verwaest): If there is no prototype and the property |
| 35 | // is nonexistent, introduce a builtin to handle this (fast properties |
| 36 | // -> return undefined, dictionary properties -> do negative lookup). |
| 37 | return Handle<Code>(); |
| 38 | } |
| 39 | CacheHolderFlag flag; |
| 40 | Handle<Map> stub_holder_map = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 41 | IC::GetHandlerCacheHolder(receiver_map, false, isolate, &flag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 42 | |
| 43 | // If no dictionary mode objects are present in the prototype chain, the load |
| 44 | // nonexistent IC stub can be shared for all names for a given map and we use |
| 45 | // the empty string for the map cache in that case. If there are dictionary |
| 46 | // mode objects involved, we need to do negative lookups in the stub and |
| 47 | // therefore the stub will be specific to the name. |
| 48 | Handle<Name> cache_name = |
| 49 | receiver_map->is_dictionary_map() |
| 50 | ? name |
| 51 | : Handle<Name>::cast(isolate->factory()->nonexistent_symbol()); |
| 52 | Handle<Map> current_map = stub_holder_map; |
| 53 | Handle<JSObject> last(JSObject::cast(receiver_map->prototype())); |
| 54 | while (true) { |
| 55 | if (current_map->is_dictionary_map()) cache_name = name; |
| 56 | if (current_map->prototype()->IsNull()) break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 57 | if (name->IsPrivate()) { |
| 58 | // TODO(verwaest): Use nonexistent_private_symbol. |
| 59 | cache_name = name; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 60 | if (!current_map->has_hidden_prototype()) break; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 61 | } |
| 62 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 63 | last = handle(JSObject::cast(current_map->prototype())); |
| 64 | current_map = handle(last->map()); |
| 65 | } |
| 66 | // Compile the stub that is either shared for all names or |
| 67 | // name specific if there are global objects involved. |
| 68 | Handle<Code> handler = PropertyHandlerCompiler::Find( |
| 69 | cache_name, stub_holder_map, Code::LOAD_IC, flag, Code::FAST); |
| 70 | if (!handler.is_null()) return handler; |
| 71 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 72 | NamedLoadHandlerCompiler compiler(isolate, receiver_map, last, flag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 73 | handler = compiler.CompileLoadNonexistent(cache_name); |
| 74 | Map::UpdateCodeCache(stub_holder_map, cache_name, handler); |
| 75 | return handler; |
| 76 | } |
| 77 | |
| 78 | |
| 79 | Handle<Code> PropertyHandlerCompiler::GetCode(Code::Kind kind, |
| 80 | Code::StubType type, |
| 81 | Handle<Name> name) { |
| 82 | Code::Flags flags = Code::ComputeHandlerFlags(kind, type, cache_holder()); |
| 83 | Handle<Code> code = GetCodeWithFlags(flags, name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 84 | PROFILE(isolate(), CodeCreateEvent(Logger::HANDLER_TAG, *code, *name)); |
| 85 | #ifdef DEBUG |
| 86 | code->VerifyEmbeddedObjects(); |
| 87 | #endif |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 88 | return code; |
| 89 | } |
| 90 | |
| 91 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 92 | #define __ ACCESS_MASM(masm()) |
| 93 | |
| 94 | |
| 95 | Register NamedLoadHandlerCompiler::FrontendHeader(Register object_reg, |
| 96 | Handle<Name> name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 97 | Label* miss, |
| 98 | ReturnHolder return_what) { |
| 99 | PrototypeCheckType check_type = SKIP_RECEIVER; |
| 100 | int function_index = map()->IsPrimitiveMap() |
| 101 | ? map()->GetConstructorFunctionIndex() |
| 102 | : Map::kNoConstructorFunctionIndex; |
| 103 | if (function_index != Map::kNoConstructorFunctionIndex) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 104 | GenerateDirectLoadGlobalFunctionPrototype(masm(), function_index, |
| 105 | scratch1(), miss); |
| 106 | Object* function = isolate()->native_context()->get(function_index); |
| 107 | Object* prototype = JSFunction::cast(function)->instance_prototype(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 108 | Handle<Map> map(JSObject::cast(prototype)->map()); |
| 109 | set_map(map); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 110 | object_reg = scratch1(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 111 | check_type = CHECK_ALL_MAPS; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | // Check that the maps starting from the prototype haven't changed. |
| 115 | return CheckPrototypes(object_reg, scratch1(), scratch2(), scratch3(), name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 116 | miss, check_type, return_what); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 117 | } |
| 118 | |
| 119 | |
| 120 | // Frontend for store uses the name register. It has to be restored before a |
| 121 | // miss. |
| 122 | Register NamedStoreHandlerCompiler::FrontendHeader(Register object_reg, |
| 123 | Handle<Name> name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 124 | Label* miss, |
| 125 | ReturnHolder return_what) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 126 | return CheckPrototypes(object_reg, this->name(), scratch1(), scratch2(), name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 127 | miss, SKIP_RECEIVER, return_what); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 128 | } |
| 129 | |
| 130 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 131 | Register PropertyHandlerCompiler::Frontend(Handle<Name> name) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 132 | Label miss; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 133 | if (IC::ICUseVector(kind())) { |
| 134 | PushVectorAndSlot(); |
| 135 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 136 | Register reg = FrontendHeader(receiver(), name, &miss, RETURN_HOLDER); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 137 | FrontendFooter(name, &miss); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 138 | // The footer consumes the vector and slot from the stack if miss occurs. |
| 139 | if (IC::ICUseVector(kind())) { |
| 140 | DiscardVectorAndSlot(); |
| 141 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 142 | return reg; |
| 143 | } |
| 144 | |
| 145 | |
| 146 | void PropertyHandlerCompiler::NonexistentFrontendHeader(Handle<Name> name, |
| 147 | Label* miss, |
| 148 | Register scratch1, |
| 149 | Register scratch2) { |
| 150 | Register holder_reg; |
| 151 | Handle<Map> last_map; |
| 152 | if (holder().is_null()) { |
| 153 | holder_reg = receiver(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 154 | last_map = map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 155 | // If |type| has null as its prototype, |holder()| is |
| 156 | // Handle<JSObject>::null(). |
| 157 | DCHECK(last_map->prototype() == isolate()->heap()->null_value()); |
| 158 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 159 | last_map = handle(holder()->map()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 160 | // This condition matches the branches below. |
| 161 | bool need_holder = |
| 162 | last_map->is_dictionary_map() && !last_map->IsJSGlobalObjectMap(); |
| 163 | holder_reg = |
| 164 | FrontendHeader(receiver(), name, miss, |
| 165 | need_holder ? RETURN_HOLDER : DONT_RETURN_ANYTHING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 166 | } |
| 167 | |
| 168 | if (last_map->is_dictionary_map()) { |
| 169 | if (last_map->IsJSGlobalObjectMap()) { |
| 170 | Handle<JSGlobalObject> global = |
| 171 | holder().is_null() |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 172 | ? Handle<JSGlobalObject>::cast(isolate()->global_object()) |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 173 | : Handle<JSGlobalObject>::cast(holder()); |
| 174 | GenerateCheckPropertyCell(masm(), global, name, scratch1, miss); |
| 175 | } else { |
| 176 | if (!name->IsUniqueName()) { |
| 177 | DCHECK(name->IsString()); |
| 178 | name = factory()->InternalizeString(Handle<String>::cast(name)); |
| 179 | } |
| 180 | DCHECK(holder().is_null() || |
| 181 | holder()->property_dictionary()->FindEntry(name) == |
| 182 | NameDictionary::kNotFound); |
| 183 | GenerateDictionaryNegativeLookup(masm(), miss, holder_reg, name, scratch1, |
| 184 | scratch2); |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | |
| 190 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadField(Handle<Name> name, |
| 191 | FieldIndex field) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 192 | Register reg = Frontend(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 193 | __ Move(receiver(), reg); |
| 194 | LoadFieldStub stub(isolate(), field); |
| 195 | GenerateTailCall(masm(), stub.GetCode()); |
| 196 | return GetCode(kind(), Code::FAST, name); |
| 197 | } |
| 198 | |
| 199 | |
| 200 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadConstant(Handle<Name> name, |
| 201 | int constant_index) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 202 | Register reg = Frontend(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 203 | __ Move(receiver(), reg); |
| 204 | LoadConstantStub stub(isolate(), constant_index); |
| 205 | GenerateTailCall(masm(), stub.GetCode()); |
| 206 | return GetCode(kind(), Code::FAST, name); |
| 207 | } |
| 208 | |
| 209 | |
| 210 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadNonexistent( |
| 211 | Handle<Name> name) { |
| 212 | Label miss; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 213 | if (IC::ICUseVector(kind())) { |
| 214 | DCHECK(kind() == Code::LOAD_IC); |
| 215 | PushVectorAndSlot(); |
| 216 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 217 | NonexistentFrontendHeader(name, &miss, scratch2(), scratch3()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 218 | if (IC::ICUseVector(kind())) { |
| 219 | DiscardVectorAndSlot(); |
| 220 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 221 | GenerateLoadConstant(isolate()->factory()->undefined_value()); |
| 222 | FrontendFooter(name, &miss); |
| 223 | return GetCode(kind(), Code::FAST, name); |
| 224 | } |
| 225 | |
| 226 | |
| 227 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadCallback( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 228 | Handle<Name> name, Handle<AccessorInfo> callback) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 229 | Register reg = Frontend(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 230 | GenerateLoadCallback(reg, callback); |
| 231 | return GetCode(kind(), Code::FAST, name); |
| 232 | } |
| 233 | |
| 234 | |
| 235 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadCallback( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 236 | Handle<Name> name, const CallOptimization& call_optimization, |
| 237 | int accessor_index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 238 | DCHECK(call_optimization.is_simple_api_call()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 239 | Register holder = Frontend(name); |
| 240 | GenerateApiAccessorCall(masm(), call_optimization, map(), receiver(), |
| 241 | scratch2(), false, no_reg, holder, accessor_index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 242 | return GetCode(kind(), Code::FAST, name); |
| 243 | } |
| 244 | |
| 245 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 246 | void NamedLoadHandlerCompiler::InterceptorVectorSlotPush(Register holder_reg) { |
| 247 | if (IC::ICUseVector(kind())) { |
| 248 | if (holder_reg.is(receiver())) { |
| 249 | PushVectorAndSlot(); |
| 250 | } else { |
| 251 | DCHECK(holder_reg.is(scratch1())); |
| 252 | PushVectorAndSlot(scratch2(), scratch3()); |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 | |
| 257 | |
| 258 | void NamedLoadHandlerCompiler::InterceptorVectorSlotPop(Register holder_reg, |
| 259 | PopMode mode) { |
| 260 | if (IC::ICUseVector(kind())) { |
| 261 | if (mode == DISCARD) { |
| 262 | DiscardVectorAndSlot(); |
| 263 | } else { |
| 264 | if (holder_reg.is(receiver())) { |
| 265 | PopVectorAndSlot(); |
| 266 | } else { |
| 267 | DCHECK(holder_reg.is(scratch1())); |
| 268 | PopVectorAndSlot(scratch2(), scratch3()); |
| 269 | } |
| 270 | } |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 275 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadInterceptor( |
| 276 | LookupIterator* it) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 277 | // So far the most popular follow ups for interceptor loads are DATA and |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 278 | // AccessorInfo, so inline only them. Other cases may be added |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 279 | // later. |
| 280 | bool inline_followup = false; |
| 281 | switch (it->state()) { |
| 282 | case LookupIterator::TRANSITION: |
| 283 | UNREACHABLE(); |
| 284 | case LookupIterator::ACCESS_CHECK: |
| 285 | case LookupIterator::INTERCEPTOR: |
| 286 | case LookupIterator::JSPROXY: |
| 287 | case LookupIterator::NOT_FOUND: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 288 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 289 | break; |
| 290 | case LookupIterator::DATA: |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 291 | inline_followup = |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 292 | it->property_details().type() == DATA && !it->is_dictionary_holder(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 293 | break; |
| 294 | case LookupIterator::ACCESSOR: { |
| 295 | Handle<Object> accessors = it->GetAccessors(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 296 | if (accessors->IsAccessorInfo()) { |
| 297 | Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(accessors); |
| 298 | inline_followup = |
| 299 | info->getter() != NULL && |
| 300 | AccessorInfo::IsCompatibleReceiverMap(isolate(), info, map()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 301 | } else if (accessors->IsAccessorPair()) { |
| 302 | Handle<JSObject> property_holder(it->GetHolder<JSObject>()); |
| 303 | Handle<Object> getter(Handle<AccessorPair>::cast(accessors)->getter(), |
| 304 | isolate()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 305 | if (!(getter->IsJSFunction() || getter->IsFunctionTemplateInfo())) { |
| 306 | break; |
| 307 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 308 | if (!property_holder->HasFastProperties()) break; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 309 | CallOptimization call_optimization(getter); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 310 | Handle<Map> receiver_map = map(); |
| 311 | inline_followup = call_optimization.is_simple_api_call() && |
| 312 | call_optimization.IsCompatibleReceiverMap( |
| 313 | receiver_map, property_holder); |
| 314 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 315 | } |
| 316 | } |
| 317 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 318 | Label miss; |
| 319 | InterceptorVectorSlotPush(receiver()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 320 | bool lost_holder_register = false; |
| 321 | auto holder_orig = holder(); |
| 322 | // non masking interceptors must check the entire chain, so temporarily reset |
| 323 | // the holder to be that last element for the FrontendHeader call. |
| 324 | if (holder()->GetNamedInterceptor()->non_masking()) { |
| 325 | DCHECK(!inline_followup); |
| 326 | JSObject* last = *holder(); |
| 327 | PrototypeIterator iter(isolate(), last); |
| 328 | while (!iter.IsAtEnd()) { |
| 329 | lost_holder_register = true; |
| 330 | // Casting to JSObject is fine here. The LookupIterator makes sure to |
| 331 | // look behind non-masking interceptors during the original lookup, and |
| 332 | // we wouldn't try to compile a handler if there was a Proxy anywhere. |
| 333 | last = iter.GetCurrent<JSObject>(); |
| 334 | iter.Advance(); |
| 335 | } |
| 336 | auto last_handle = handle(last); |
| 337 | set_holder(last_handle); |
| 338 | } |
| 339 | Register reg = FrontendHeader(receiver(), it->name(), &miss, RETURN_HOLDER); |
| 340 | // Reset the holder so further calculations are correct. |
| 341 | set_holder(holder_orig); |
| 342 | if (lost_holder_register) { |
| 343 | if (*it->GetReceiver() == *holder()) { |
| 344 | reg = receiver(); |
| 345 | } else { |
| 346 | // Reload lost holder register. |
| 347 | auto cell = isolate()->factory()->NewWeakCell(holder()); |
| 348 | __ LoadWeakValue(reg, cell, &miss); |
| 349 | } |
| 350 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 351 | FrontendFooter(it->name(), &miss); |
| 352 | InterceptorVectorSlotPop(reg); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 353 | if (inline_followup) { |
| 354 | // TODO(368): Compile in the whole chain: all the interceptors in |
| 355 | // prototypes and ultimate answer. |
| 356 | GenerateLoadInterceptorWithFollowup(it, reg); |
| 357 | } else { |
| 358 | GenerateLoadInterceptor(reg); |
| 359 | } |
| 360 | return GetCode(kind(), Code::FAST, it->name()); |
| 361 | } |
| 362 | |
| 363 | |
| 364 | void NamedLoadHandlerCompiler::GenerateLoadPostInterceptor( |
| 365 | LookupIterator* it, Register interceptor_reg) { |
| 366 | Handle<JSObject> real_named_property_holder(it->GetHolder<JSObject>()); |
| 367 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 368 | Handle<Map> holder_map(holder()->map()); |
| 369 | set_map(holder_map); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 370 | set_holder(real_named_property_holder); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 371 | |
| 372 | Label miss; |
| 373 | InterceptorVectorSlotPush(interceptor_reg); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 374 | Register reg = |
| 375 | FrontendHeader(interceptor_reg, it->name(), &miss, RETURN_HOLDER); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 376 | FrontendFooter(it->name(), &miss); |
| 377 | // We discard the vector and slot now because we don't miss below this point. |
| 378 | InterceptorVectorSlotPop(reg, DISCARD); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 379 | |
| 380 | switch (it->state()) { |
| 381 | case LookupIterator::ACCESS_CHECK: |
| 382 | case LookupIterator::INTERCEPTOR: |
| 383 | case LookupIterator::JSPROXY: |
| 384 | case LookupIterator::NOT_FOUND: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 385 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 386 | case LookupIterator::TRANSITION: |
| 387 | UNREACHABLE(); |
| 388 | case LookupIterator::DATA: { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 389 | DCHECK_EQ(DATA, it->property_details().type()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 390 | __ Move(receiver(), reg); |
| 391 | LoadFieldStub stub(isolate(), it->GetFieldIndex()); |
| 392 | GenerateTailCall(masm(), stub.GetCode()); |
| 393 | break; |
| 394 | } |
| 395 | case LookupIterator::ACCESSOR: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 396 | if (it->GetAccessors()->IsAccessorInfo()) { |
| 397 | Handle<AccessorInfo> info = |
| 398 | Handle<AccessorInfo>::cast(it->GetAccessors()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 399 | DCHECK_NOT_NULL(info->getter()); |
| 400 | GenerateLoadCallback(reg, info); |
| 401 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 402 | Handle<Object> function = handle( |
| 403 | AccessorPair::cast(*it->GetAccessors())->getter(), isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 404 | CallOptimization call_optimization(function); |
| 405 | GenerateApiAccessorCall(masm(), call_optimization, holder_map, |
| 406 | receiver(), scratch2(), false, no_reg, reg, |
| 407 | it->GetAccessorIndex()); |
| 408 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 409 | } |
| 410 | } |
| 411 | |
| 412 | |
| 413 | Handle<Code> NamedLoadHandlerCompiler::CompileLoadViaGetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 414 | Handle<Name> name, int accessor_index, int expected_arguments) { |
| 415 | Register holder = Frontend(name); |
| 416 | GenerateLoadViaGetter(masm(), map(), receiver(), holder, accessor_index, |
| 417 | expected_arguments, scratch2()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 418 | return GetCode(kind(), Code::FAST, name); |
| 419 | } |
| 420 | |
| 421 | |
| 422 | // TODO(verwaest): Cleanup. holder() is actually the receiver. |
| 423 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreTransition( |
| 424 | Handle<Map> transition, Handle<Name> name) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 425 | Label miss; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 426 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 427 | PushVectorAndSlot(); |
| 428 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 429 | // Check that we are allowed to write this. |
| 430 | bool is_nonexistent = holder()->map() == transition->GetBackPointer(); |
| 431 | if (is_nonexistent) { |
| 432 | // Find the top object. |
| 433 | Handle<JSObject> last; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 434 | PrototypeIterator::WhereToEnd end = |
| 435 | name->IsPrivate() ? PrototypeIterator::END_AT_NON_HIDDEN |
| 436 | : PrototypeIterator::END_AT_NULL; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 437 | PrototypeIterator iter(isolate(), holder(), |
| 438 | PrototypeIterator::START_AT_PROTOTYPE, end); |
| 439 | while (!iter.IsAtEnd()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 440 | last = PrototypeIterator::GetCurrent<JSObject>(iter); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 441 | iter.Advance(); |
| 442 | } |
| 443 | if (!last.is_null()) set_holder(last); |
| 444 | NonexistentFrontendHeader(name, &miss, scratch1(), scratch2()); |
| 445 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 446 | FrontendHeader(receiver(), name, &miss, DONT_RETURN_ANYTHING); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 447 | DCHECK(holder()->HasFastProperties()); |
| 448 | } |
| 449 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 450 | int descriptor = transition->LastAdded(); |
| 451 | Handle<DescriptorArray> descriptors(transition->instance_descriptors()); |
| 452 | PropertyDetails details = descriptors->GetDetails(descriptor); |
| 453 | Representation representation = details.representation(); |
| 454 | DCHECK(!representation.IsNone()); |
| 455 | |
| 456 | // Stub is never generated for objects that require access checks. |
| 457 | DCHECK(!transition->is_access_check_needed()); |
| 458 | |
| 459 | // Call to respective StoreTransitionStub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 460 | bool virtual_args = StoreTransitionHelper::HasVirtualSlotArg(); |
| 461 | Register map_reg = StoreTransitionHelper::MapRegister(); |
| 462 | |
| 463 | if (details.type() == DATA_CONSTANT) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 464 | DCHECK(descriptors->GetValue(descriptor)->IsJSFunction()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 465 | Register tmp = |
| 466 | virtual_args ? VectorStoreICDescriptor::VectorRegister() : map_reg; |
| 467 | GenerateRestoreMap(transition, tmp, scratch2(), &miss); |
| 468 | GenerateConstantCheck(tmp, descriptor, value(), scratch2(), &miss); |
| 469 | if (virtual_args) { |
| 470 | // This will move the map from tmp into map_reg. |
| 471 | RearrangeVectorAndSlot(tmp, map_reg); |
| 472 | } else { |
| 473 | PopVectorAndSlot(); |
| 474 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 475 | GenerateRestoreName(name); |
| 476 | StoreTransitionStub stub(isolate()); |
| 477 | GenerateTailCall(masm(), stub.GetCode()); |
| 478 | |
| 479 | } else { |
| 480 | if (representation.IsHeapObject()) { |
| 481 | GenerateFieldTypeChecks(descriptors->GetFieldType(descriptor), value(), |
| 482 | &miss); |
| 483 | } |
| 484 | StoreTransitionStub::StoreMode store_mode = |
| 485 | Map::cast(transition->GetBackPointer())->unused_property_fields() == 0 |
| 486 | ? StoreTransitionStub::ExtendStorageAndStoreMapAndValue |
| 487 | : StoreTransitionStub::StoreMapAndValue; |
| 488 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 489 | Register tmp = |
| 490 | virtual_args ? VectorStoreICDescriptor::VectorRegister() : map_reg; |
| 491 | GenerateRestoreMap(transition, tmp, scratch2(), &miss); |
| 492 | if (virtual_args) { |
| 493 | RearrangeVectorAndSlot(tmp, map_reg); |
| 494 | } else { |
| 495 | PopVectorAndSlot(); |
| 496 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 497 | GenerateRestoreName(name); |
| 498 | StoreTransitionStub stub(isolate(), |
| 499 | FieldIndex::ForDescriptor(*transition, descriptor), |
| 500 | representation, store_mode); |
| 501 | GenerateTailCall(masm(), stub.GetCode()); |
| 502 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 503 | |
| 504 | GenerateRestoreName(&miss, name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 505 | PopVectorAndSlot(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 506 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 507 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 508 | return GetCode(kind(), Code::FAST, name); |
| 509 | } |
| 510 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 511 | bool NamedStoreHandlerCompiler::RequiresFieldTypeChecks( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 512 | FieldType* field_type) const { |
| 513 | return field_type->IsClass(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 517 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreField(LookupIterator* it) { |
| 518 | Label miss; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 519 | DCHECK(it->representation().IsHeapObject()); |
| 520 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 521 | FieldType* field_type = *it->GetFieldType(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 522 | bool need_save_restore = false; |
| 523 | if (RequiresFieldTypeChecks(field_type)) { |
| 524 | need_save_restore = IC::ICUseVector(kind()); |
| 525 | if (need_save_restore) PushVectorAndSlot(); |
| 526 | GenerateFieldTypeChecks(field_type, value(), &miss); |
| 527 | if (need_save_restore) PopVectorAndSlot(); |
| 528 | } |
| 529 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 530 | StoreFieldStub stub(isolate(), it->GetFieldIndex(), it->representation()); |
| 531 | GenerateTailCall(masm(), stub.GetCode()); |
| 532 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 533 | __ bind(&miss); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 534 | if (need_save_restore) PopVectorAndSlot(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 535 | TailCallBuiltin(masm(), MissBuiltin(kind())); |
| 536 | return GetCode(kind(), Code::FAST, it->name()); |
| 537 | } |
| 538 | |
| 539 | |
| 540 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreViaSetter( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 541 | Handle<JSObject> object, Handle<Name> name, int accessor_index, |
| 542 | int expected_arguments) { |
| 543 | Register holder = Frontend(name); |
| 544 | GenerateStoreViaSetter(masm(), map(), receiver(), holder, accessor_index, |
| 545 | expected_arguments, scratch2()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 546 | |
| 547 | return GetCode(kind(), Code::FAST, name); |
| 548 | } |
| 549 | |
| 550 | |
| 551 | Handle<Code> NamedStoreHandlerCompiler::CompileStoreCallback( |
| 552 | Handle<JSObject> object, Handle<Name> name, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 553 | const CallOptimization& call_optimization, int accessor_index) { |
| 554 | Register holder = Frontend(name); |
| 555 | GenerateApiAccessorCall(masm(), call_optimization, handle(object->map()), |
| 556 | receiver(), scratch2(), true, value(), holder, |
| 557 | accessor_index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 558 | return GetCode(kind(), Code::FAST, name); |
| 559 | } |
| 560 | |
| 561 | |
| 562 | #undef __ |
| 563 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 564 | void ElementHandlerCompiler::CompileElementHandlers( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 565 | MapHandleList* receiver_maps, CodeHandleList* handlers) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 566 | for (int i = 0; i < receiver_maps->length(); ++i) { |
| 567 | Handle<Map> receiver_map = receiver_maps->at(i); |
| 568 | Handle<Code> cached_stub; |
| 569 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 570 | if (receiver_map->IsStringMap()) { |
| 571 | cached_stub = LoadIndexedStringStub(isolate()).GetCode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 572 | } else if (receiver_map->instance_type() < FIRST_JS_RECEIVER_TYPE) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 573 | cached_stub = isolate()->builtins()->KeyedLoadIC_Slow(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 574 | } else { |
| 575 | bool is_js_array = receiver_map->instance_type() == JS_ARRAY_TYPE; |
| 576 | ElementsKind elements_kind = receiver_map->elements_kind(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 577 | |
| 578 | // No need to check for an elements-free prototype chain here, the |
| 579 | // generated stub code needs to check that dynamically anyway. |
| 580 | bool convert_hole_to_undefined = |
| 581 | (is_js_array && elements_kind == FAST_HOLEY_ELEMENTS && |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 582 | *receiver_map == isolate()->get_initial_js_array_map(elements_kind)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 583 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 584 | if (receiver_map->has_indexed_interceptor()) { |
| 585 | cached_stub = LoadIndexedInterceptorStub(isolate()).GetCode(); |
| 586 | } else if (IsSloppyArgumentsElements(elements_kind)) { |
| 587 | cached_stub = KeyedLoadSloppyArgumentsStub(isolate()).GetCode(); |
| 588 | } else if (IsFastElementsKind(elements_kind) || |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 589 | IsFixedTypedArrayElementsKind(elements_kind)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 590 | cached_stub = LoadFastElementStub(isolate(), is_js_array, elements_kind, |
| 591 | convert_hole_to_undefined).GetCode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 592 | } else { |
| 593 | DCHECK(elements_kind == DICTIONARY_ELEMENTS); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 594 | LoadICState state = LoadICState(kNoExtraICState); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 595 | cached_stub = LoadDictionaryElementStub(isolate(), state).GetCode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 596 | } |
| 597 | } |
| 598 | |
| 599 | handlers->Add(cached_stub); |
| 600 | } |
| 601 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 602 | } // namespace internal |
| 603 | } // namespace v8 |