Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2012 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/ic.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 6 | |
| 7 | #include "src/accessors.h" |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 8 | #include "src/api-arguments-inl.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 9 | #include "src/api.h" |
| 10 | #include "src/arguments.h" |
| 11 | #include "src/base/bits.h" |
| 12 | #include "src/codegen.h" |
| 13 | #include "src/conversions.h" |
| 14 | #include "src/execution.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 15 | #include "src/field-type.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 16 | #include "src/frames-inl.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 17 | #include "src/ic/call-optimization.h" |
| 18 | #include "src/ic/handler-compiler.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 19 | #include "src/ic/ic-compiler.h" |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 20 | #include "src/ic/ic-inl.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 21 | #include "src/ic/stub-cache.h" |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 22 | #include "src/isolate-inl.h" |
| 23 | #include "src/macro-assembler.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 24 | #include "src/prototype.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 25 | #include "src/runtime/runtime-utils.h" |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 26 | #include "src/runtime/runtime.h" |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 27 | #include "src/tracing/trace-event.h" |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | |
| 29 | namespace v8 { |
| 30 | namespace internal { |
| 31 | |
| 32 | char IC::TransitionMarkFromState(IC::State state) { |
| 33 | switch (state) { |
| 34 | case UNINITIALIZED: |
| 35 | return '0'; |
| 36 | case PREMONOMORPHIC: |
| 37 | return '.'; |
| 38 | case MONOMORPHIC: |
| 39 | return '1'; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 40 | case RECOMPUTE_HANDLER: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 41 | return '^'; |
| 42 | case POLYMORPHIC: |
| 43 | return 'P'; |
| 44 | case MEGAMORPHIC: |
| 45 | return 'N'; |
| 46 | case GENERIC: |
| 47 | return 'G'; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 48 | } |
| 49 | UNREACHABLE(); |
| 50 | return 0; |
| 51 | } |
| 52 | |
| 53 | |
| 54 | const char* GetTransitionMarkModifier(KeyedAccessStoreMode mode) { |
| 55 | if (mode == STORE_NO_TRANSITION_HANDLE_COW) return ".COW"; |
| 56 | if (mode == STORE_NO_TRANSITION_IGNORE_OUT_OF_BOUNDS) { |
| 57 | return ".IGNORE_OOB"; |
| 58 | } |
| 59 | if (IsGrowStoreMode(mode)) return ".GROW"; |
| 60 | return ""; |
| 61 | } |
| 62 | |
| 63 | |
| 64 | #ifdef DEBUG |
| 65 | |
| 66 | #define TRACE_GENERIC_IC(isolate, type, reason) \ |
| 67 | do { \ |
| 68 | if (FLAG_trace_ic) { \ |
| 69 | PrintF("[%s patching generic stub in ", type); \ |
| 70 | JavaScriptFrame::PrintTop(isolate, stdout, false, true); \ |
| 71 | PrintF(" (%s)]\n", reason); \ |
| 72 | } \ |
| 73 | } while (false) |
| 74 | |
| 75 | #else |
| 76 | |
| 77 | #define TRACE_GENERIC_IC(isolate, type, reason) \ |
| 78 | do { \ |
| 79 | if (FLAG_trace_ic) { \ |
| 80 | PrintF("[%s patching generic stub in ", type); \ |
| 81 | PrintF("(see below) (%s)]\n", reason); \ |
| 82 | } \ |
| 83 | } while (false) |
| 84 | |
| 85 | #endif // DEBUG |
| 86 | |
| 87 | |
| 88 | void IC::TraceIC(const char* type, Handle<Object> name) { |
| 89 | if (FLAG_trace_ic) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 90 | if (AddressIsDeoptimizedCode()) return; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 91 | DCHECK(UseVector()); |
| 92 | State new_state = nexus()->StateFromFeedback(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 93 | TraceIC(type, name, state(), new_state); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | |
| 98 | void IC::TraceIC(const char* type, Handle<Object> name, State old_state, |
| 99 | State new_state) { |
| 100 | if (FLAG_trace_ic) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 101 | PrintF("[%s%s in ", is_keyed() ? "Keyed" : "", type); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 102 | |
| 103 | // TODO(jkummerow): Add support for "apply". The logic is roughly: |
| 104 | // marker = [fp_ + kMarkerOffset]; |
| 105 | // if marker is smi and marker.value == INTERNAL and |
| 106 | // the frame's code == builtin(Builtins::kFunctionApply): |
| 107 | // then print "apply from" and advance one frame |
| 108 | |
| 109 | Object* maybe_function = |
| 110 | Memory::Object_at(fp_ + JavaScriptFrameConstants::kFunctionOffset); |
| 111 | if (maybe_function->IsJSFunction()) { |
| 112 | JSFunction* function = JSFunction::cast(maybe_function); |
| 113 | JavaScriptFrame::PrintFunctionAndOffset(function, function->code(), pc(), |
| 114 | stdout, true); |
| 115 | } |
| 116 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 117 | const char* modifier = ""; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 118 | if (kind() == Code::KEYED_STORE_IC) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 119 | KeyedAccessStoreMode mode = |
| 120 | casted_nexus<KeyedStoreICNexus>()->GetKeyedAccessStoreMode(); |
| 121 | modifier = GetTransitionMarkModifier(mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 122 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 123 | void* map = nullptr; |
| 124 | if (!receiver_map().is_null()) { |
| 125 | map = reinterpret_cast<void*>(*receiver_map()); |
| 126 | } |
| 127 | PrintF(" (%c->%c%s) map=%p ", TransitionMarkFromState(old_state), |
| 128 | TransitionMarkFromState(new_state), modifier, map); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 129 | name->ShortPrint(stdout); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 130 | PrintF("]\n"); |
| 131 | } |
| 132 | } |
| 133 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 134 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 135 | #define TRACE_IC(type, name) TraceIC(type, name) |
| 136 | |
| 137 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 138 | IC::IC(FrameDepth depth, Isolate* isolate, FeedbackNexus* nexus) |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 139 | : isolate_(isolate), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 140 | vector_set_(false), |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 141 | target_maps_set_(false), |
| 142 | nexus_(nexus) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 143 | // To improve the performance of the (much used) IC code, we unfold a few |
| 144 | // levels of the stack frame iteration code. This yields a ~35% speedup when |
| 145 | // running DeltaBlue and a ~25% speedup of gbemu with the '--nouse-ic' flag. |
| 146 | const Address entry = Isolate::c_entry_fp(isolate->thread_local_top()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 147 | Address* constant_pool = NULL; |
| 148 | if (FLAG_enable_embedded_constant_pool) { |
| 149 | constant_pool = reinterpret_cast<Address*>( |
| 150 | entry + ExitFrameConstants::kConstantPoolOffset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 151 | } |
| 152 | Address* pc_address = |
| 153 | reinterpret_cast<Address*>(entry + ExitFrameConstants::kCallerPCOffset); |
| 154 | Address fp = Memory::Address_at(entry + ExitFrameConstants::kCallerFPOffset); |
| 155 | // If there's another JavaScript frame on the stack or a |
| 156 | // StubFailureTrampoline, we need to look one frame further down the stack to |
| 157 | // find the frame pointer and the return address stack slot. |
| 158 | if (depth == EXTRA_CALL_FRAME) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 159 | if (FLAG_enable_embedded_constant_pool) { |
| 160 | constant_pool = reinterpret_cast<Address*>( |
| 161 | fp + StandardFrameConstants::kConstantPoolOffset); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 162 | } |
| 163 | const int kCallerPCOffset = StandardFrameConstants::kCallerPCOffset; |
| 164 | pc_address = reinterpret_cast<Address*>(fp + kCallerPCOffset); |
| 165 | fp = Memory::Address_at(fp + StandardFrameConstants::kCallerFPOffset); |
| 166 | } |
| 167 | #ifdef DEBUG |
| 168 | StackFrameIterator it(isolate); |
| 169 | for (int i = 0; i < depth + 1; i++) it.Advance(); |
| 170 | StackFrame* frame = it.frame(); |
| 171 | DCHECK(fp == frame->fp() && pc_address == frame->pc_address()); |
| 172 | #endif |
| 173 | fp_ = fp; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 174 | if (FLAG_enable_embedded_constant_pool) { |
| 175 | constant_pool_address_ = constant_pool; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 176 | } |
| 177 | pc_address_ = StackFrame::ResolveReturnAddressLocation(pc_address); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 178 | Code* target = this->target(); |
| 179 | kind_ = target->kind(); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 180 | state_ = UseVector() ? nexus->StateFromFeedback() : StateFromCode(target); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 181 | old_state_ = state_; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 182 | extra_ic_state_ = target->extra_ic_state(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 183 | } |
| 184 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 185 | InlineCacheState IC::StateFromCode(Code* code) { |
| 186 | Isolate* isolate = code->GetIsolate(); |
| 187 | switch (code->kind()) { |
| 188 | case Code::BINARY_OP_IC: { |
| 189 | BinaryOpICState state(isolate, code->extra_ic_state()); |
| 190 | return state.GetICState(); |
| 191 | } |
| 192 | case Code::COMPARE_IC: { |
| 193 | CompareICStub stub(isolate, code->extra_ic_state()); |
| 194 | return stub.GetICState(); |
| 195 | } |
| 196 | case Code::TO_BOOLEAN_IC: { |
| 197 | ToBooleanICStub stub(isolate, code->extra_ic_state()); |
| 198 | return stub.GetICState(); |
| 199 | } |
| 200 | default: |
| 201 | if (code->is_debug_stub()) return UNINITIALIZED; |
| 202 | UNREACHABLE(); |
| 203 | return UNINITIALIZED; |
| 204 | } |
| 205 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 206 | |
| 207 | SharedFunctionInfo* IC::GetSharedFunctionInfo() const { |
| 208 | // Compute the JavaScript frame for the frame pointer of this IC |
| 209 | // structure. We need this to be able to find the function |
| 210 | // corresponding to the frame. |
| 211 | StackFrameIterator it(isolate()); |
| 212 | while (it.frame()->fp() != this->fp()) it.Advance(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 213 | if (FLAG_ignition && it.frame()->type() == StackFrame::STUB) { |
| 214 | // Advance over bytecode handler frame. |
| 215 | // TODO(rmcilroy): Remove this once bytecode handlers don't need a frame. |
| 216 | it.Advance(); |
| 217 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 218 | JavaScriptFrame* frame = JavaScriptFrame::cast(it.frame()); |
| 219 | // Find the function on the stack and both the active code for the |
| 220 | // function and the original code. |
| 221 | JSFunction* function = frame->function(); |
| 222 | return function->shared(); |
| 223 | } |
| 224 | |
| 225 | |
| 226 | Code* IC::GetCode() const { |
| 227 | HandleScope scope(isolate()); |
| 228 | Handle<SharedFunctionInfo> shared(GetSharedFunctionInfo(), isolate()); |
| 229 | Code* code = shared->code(); |
| 230 | return code; |
| 231 | } |
| 232 | |
| 233 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 234 | bool IC::AddressIsOptimizedCode() const { |
| 235 | Code* host = |
| 236 | isolate()->inner_pointer_to_code_cache()->GetCacheEntry(address())->code; |
| 237 | return host->kind() == Code::OPTIMIZED_FUNCTION; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 238 | } |
| 239 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 240 | static void LookupForRead(LookupIterator* it) { |
| 241 | for (; it->IsFound(); it->Next()) { |
| 242 | switch (it->state()) { |
| 243 | case LookupIterator::NOT_FOUND: |
| 244 | case LookupIterator::TRANSITION: |
| 245 | UNREACHABLE(); |
| 246 | case LookupIterator::JSPROXY: |
| 247 | return; |
| 248 | case LookupIterator::INTERCEPTOR: { |
| 249 | // If there is a getter, return; otherwise loop to perform the lookup. |
| 250 | Handle<JSObject> holder = it->GetHolder<JSObject>(); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 251 | if (!holder->GetNamedInterceptor()->getter()->IsUndefined( |
| 252 | it->isolate())) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 253 | return; |
| 254 | } |
| 255 | break; |
| 256 | } |
| 257 | case LookupIterator::ACCESS_CHECK: |
| 258 | // PropertyHandlerCompiler::CheckPrototypes() knows how to emit |
| 259 | // access checks for global proxies. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 260 | if (it->GetHolder<JSObject>()->IsJSGlobalProxy() && it->HasAccess()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 261 | break; |
| 262 | } |
| 263 | return; |
| 264 | case LookupIterator::ACCESSOR: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 265 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 266 | case LookupIterator::DATA: |
| 267 | return; |
| 268 | } |
| 269 | } |
| 270 | } |
| 271 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 272 | bool IC::ShouldRecomputeHandler(Handle<Object> receiver, Handle<String> name) { |
| 273 | if (!RecomputeHandlerForName(name)) return false; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 274 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 275 | DCHECK(UseVector()); |
| 276 | maybe_handler_ = nexus()->FindHandlerForMap(receiver_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 277 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 278 | // This is a contextual access, always just update the handler and stay |
| 279 | // monomorphic. |
| 280 | if (kind() == Code::LOAD_GLOBAL_IC) return true; |
| 281 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 282 | // The current map wasn't handled yet. There's no reason to stay monomorphic, |
| 283 | // *unless* we're moving from a deprecated map to its replacement, or |
| 284 | // to a more general elements kind. |
| 285 | // TODO(verwaest): Check if the current map is actually what the old map |
| 286 | // would transition to. |
| 287 | if (maybe_handler_.is_null()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 288 | if (!receiver_map()->IsJSObjectMap()) return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 289 | Map* first_map = FirstTargetMap(); |
| 290 | if (first_map == NULL) return false; |
| 291 | Handle<Map> old_map(first_map); |
| 292 | if (old_map->is_deprecated()) return true; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 293 | return IsMoreGeneralElementsKindTransition(old_map->elements_kind(), |
| 294 | receiver_map()->elements_kind()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 295 | } |
| 296 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 297 | return true; |
| 298 | } |
| 299 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 300 | bool IC::RecomputeHandlerForName(Handle<Object> name) { |
| 301 | if (is_keyed()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 302 | // Determine whether the failure is due to a name failure. |
| 303 | if (!name->IsName()) return false; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 304 | DCHECK(UseVector()); |
| 305 | Name* stub_name = nexus()->FindFirstName(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 306 | if (*name != stub_name) return false; |
| 307 | } |
| 308 | |
| 309 | return true; |
| 310 | } |
| 311 | |
| 312 | |
| 313 | void IC::UpdateState(Handle<Object> receiver, Handle<Object> name) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 314 | update_receiver_map(receiver); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 315 | if (!name->IsString()) return; |
| 316 | if (state() != MONOMORPHIC && state() != POLYMORPHIC) return; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 317 | if (receiver->IsUndefined(isolate()) || receiver->IsNull(isolate())) return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 318 | |
| 319 | // Remove the target from the code cache if it became invalid |
| 320 | // because of changes in the prototype chain to avoid hitting it |
| 321 | // again. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 322 | if (ShouldRecomputeHandler(receiver, Handle<String>::cast(name))) { |
| 323 | MarkRecomputeHandler(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 324 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 328 | MaybeHandle<Object> IC::TypeError(MessageTemplate::Template index, |
| 329 | Handle<Object> object, Handle<Object> key) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 330 | HandleScope scope(isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 331 | THROW_NEW_ERROR(isolate(), NewTypeError(index, key, object), Object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 335 | MaybeHandle<Object> IC::ReferenceError(Handle<Name> name) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 336 | HandleScope scope(isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 337 | THROW_NEW_ERROR( |
| 338 | isolate(), NewReferenceError(MessageTemplate::kNotDefined, name), Object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | |
| 342 | static void ComputeTypeInfoCountDelta(IC::State old_state, IC::State new_state, |
| 343 | int* polymorphic_delta, |
| 344 | int* generic_delta) { |
| 345 | switch (old_state) { |
| 346 | case UNINITIALIZED: |
| 347 | case PREMONOMORPHIC: |
| 348 | if (new_state == UNINITIALIZED || new_state == PREMONOMORPHIC) break; |
| 349 | if (new_state == MONOMORPHIC || new_state == POLYMORPHIC) { |
| 350 | *polymorphic_delta = 1; |
| 351 | } else if (new_state == MEGAMORPHIC || new_state == GENERIC) { |
| 352 | *generic_delta = 1; |
| 353 | } |
| 354 | break; |
| 355 | case MONOMORPHIC: |
| 356 | case POLYMORPHIC: |
| 357 | if (new_state == MONOMORPHIC || new_state == POLYMORPHIC) break; |
| 358 | *polymorphic_delta = -1; |
| 359 | if (new_state == MEGAMORPHIC || new_state == GENERIC) { |
| 360 | *generic_delta = 1; |
| 361 | } |
| 362 | break; |
| 363 | case MEGAMORPHIC: |
| 364 | case GENERIC: |
| 365 | if (new_state == MEGAMORPHIC || new_state == GENERIC) break; |
| 366 | *generic_delta = -1; |
| 367 | if (new_state == MONOMORPHIC || new_state == POLYMORPHIC) { |
| 368 | *polymorphic_delta = 1; |
| 369 | } |
| 370 | break; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 371 | case RECOMPUTE_HANDLER: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 372 | UNREACHABLE(); |
| 373 | } |
| 374 | } |
| 375 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 376 | // static |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 377 | void IC::OnTypeFeedbackChanged(Isolate* isolate, Code* host) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 378 | if (host->kind() != Code::FUNCTION) return; |
| 379 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 380 | TypeFeedbackInfo* info = TypeFeedbackInfo::cast(host->type_feedback_info()); |
| 381 | info->change_own_type_change_checksum(); |
| 382 | host->set_profiler_ticks(0); |
| 383 | isolate->runtime_profiler()->NotifyICChanged(); |
| 384 | // TODO(2029): When an optimized function is patched, it would |
| 385 | // be nice to propagate the corresponding type information to its |
| 386 | // unoptimized version for the benefit of later inlining. |
| 387 | } |
| 388 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 389 | void IC::PostPatching(Address address, Code* target, Code* old_target) { |
| 390 | // Type vector based ICs update these statistics at a different time because |
| 391 | // they don't always patch on state change. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 392 | if (ICUseVector(target->kind())) return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 393 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 394 | DCHECK(old_target->is_inline_cache_stub()); |
| 395 | DCHECK(target->is_inline_cache_stub()); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 396 | State old_state = StateFromCode(old_target); |
| 397 | State new_state = StateFromCode(target); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 398 | |
| 399 | Isolate* isolate = target->GetIsolate(); |
| 400 | Code* host = |
| 401 | isolate->inner_pointer_to_code_cache()->GetCacheEntry(address)->code; |
| 402 | if (host->kind() != Code::FUNCTION) return; |
| 403 | |
| 404 | // Not all Code objects have TypeFeedbackInfo. |
| 405 | if (host->type_feedback_info()->IsTypeFeedbackInfo()) { |
| 406 | if (FLAG_type_info_threshold > 0) { |
| 407 | int polymorphic_delta = 0; // "Polymorphic" here includes monomorphic. |
| 408 | int generic_delta = 0; // "Generic" here includes megamorphic. |
| 409 | ComputeTypeInfoCountDelta(old_state, new_state, &polymorphic_delta, |
| 410 | &generic_delta); |
| 411 | TypeFeedbackInfo* info = |
| 412 | TypeFeedbackInfo::cast(host->type_feedback_info()); |
| 413 | info->change_ic_with_type_info_count(polymorphic_delta); |
| 414 | info->change_ic_generic_count(generic_delta); |
| 415 | } |
| 416 | TypeFeedbackInfo* info = TypeFeedbackInfo::cast(host->type_feedback_info()); |
| 417 | info->change_own_type_change_checksum(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 418 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 419 | host->set_profiler_ticks(0); |
| 420 | isolate->runtime_profiler()->NotifyICChanged(); |
| 421 | // TODO(2029): When an optimized function is patched, it would |
| 422 | // be nice to propagate the corresponding type information to its |
| 423 | // unoptimized version for the benefit of later inlining. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 424 | } |
| 425 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 426 | void IC::Clear(Isolate* isolate, Address address, Address constant_pool) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 427 | Code* target = GetTargetAtAddress(address, constant_pool); |
| 428 | |
| 429 | // Don't clear debug break inline cache as it will remove the break point. |
| 430 | if (target->is_debug_stub()) return; |
| 431 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 432 | if (target->kind() == Code::COMPARE_IC) { |
| 433 | CompareIC::Clear(isolate, address, target, constant_pool); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 434 | } |
| 435 | } |
| 436 | |
| 437 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 438 | void KeyedLoadIC::Clear(Isolate* isolate, Code* host, KeyedLoadICNexus* nexus) { |
| 439 | if (IsCleared(nexus)) return; |
| 440 | // Make sure to also clear the map used in inline fast cases. If we |
| 441 | // do not clear these maps, cached code can keep objects alive |
| 442 | // through the embedded maps. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 443 | nexus->ConfigurePremonomorphic(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 444 | OnTypeFeedbackChanged(isolate, host); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 445 | } |
| 446 | |
| 447 | |
| 448 | void CallIC::Clear(Isolate* isolate, Code* host, CallICNexus* nexus) { |
| 449 | // Determine our state. |
| 450 | Object* feedback = nexus->vector()->Get(nexus->slot()); |
| 451 | State state = nexus->StateFromFeedback(); |
| 452 | |
| 453 | if (state != UNINITIALIZED && !feedback->IsAllocationSite()) { |
| 454 | nexus->ConfigureUninitialized(); |
| 455 | // The change in state must be processed. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 456 | OnTypeFeedbackChanged(isolate, host); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 457 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 458 | } |
| 459 | |
| 460 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 461 | void LoadIC::Clear(Isolate* isolate, Code* host, LoadICNexus* nexus) { |
| 462 | if (IsCleared(nexus)) return; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 463 | nexus->ConfigurePremonomorphic(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 464 | OnTypeFeedbackChanged(isolate, host); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 465 | } |
| 466 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 467 | void LoadGlobalIC::Clear(Isolate* isolate, Code* host, |
| 468 | LoadGlobalICNexus* nexus) { |
| 469 | if (IsCleared(nexus)) return; |
| 470 | nexus->ConfigureUninitialized(); |
| 471 | OnTypeFeedbackChanged(isolate, host); |
| 472 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 473 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 474 | void StoreIC::Clear(Isolate* isolate, Code* host, StoreICNexus* nexus) { |
| 475 | if (IsCleared(nexus)) return; |
| 476 | nexus->ConfigurePremonomorphic(); |
| 477 | OnTypeFeedbackChanged(isolate, host); |
| 478 | } |
| 479 | |
| 480 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 481 | void KeyedStoreIC::Clear(Isolate* isolate, Code* host, |
| 482 | KeyedStoreICNexus* nexus) { |
| 483 | if (IsCleared(nexus)) return; |
| 484 | nexus->ConfigurePremonomorphic(); |
| 485 | OnTypeFeedbackChanged(isolate, host); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 486 | } |
| 487 | |
| 488 | |
| 489 | void CompareIC::Clear(Isolate* isolate, Address address, Code* target, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 490 | Address constant_pool) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 491 | DCHECK(CodeStub::GetMajorKey(target) == CodeStub::CompareIC); |
| 492 | CompareICStub stub(target->stub_key(), isolate); |
| 493 | // Only clear CompareICs that can retain objects. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 494 | if (stub.state() != CompareICState::KNOWN_RECEIVER) return; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 495 | SetTargetAtAddress(address, GetRawUninitialized(isolate, stub.op()), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 496 | constant_pool); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 497 | PatchInlinedSmiCode(isolate, address, DISABLE_INLINED_SMI_CHECK); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | |
| 501 | // static |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 502 | Handle<Code> KeyedLoadIC::ChooseMegamorphicStub(Isolate* isolate, |
| 503 | ExtraICState extra_state) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 504 | // TODO(ishell): remove extra_ic_state |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 505 | if (FLAG_compiled_keyed_generic_loads) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 506 | return KeyedLoadGenericStub(isolate).GetCode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 507 | } else { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 508 | return isolate->builtins()->KeyedLoadIC_Megamorphic(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 509 | } |
| 510 | } |
| 511 | |
| 512 | |
| 513 | static bool MigrateDeprecated(Handle<Object> object) { |
| 514 | if (!object->IsJSObject()) return false; |
| 515 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 516 | if (!receiver->map()->is_deprecated()) return false; |
| 517 | JSObject::MigrateInstance(Handle<JSObject>::cast(object)); |
| 518 | return true; |
| 519 | } |
| 520 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 521 | void IC::ConfigureVectorState(IC::State new_state, Handle<Object> key) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 522 | DCHECK(UseVector()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 523 | if (new_state == PREMONOMORPHIC) { |
| 524 | nexus()->ConfigurePremonomorphic(); |
| 525 | } else if (new_state == MEGAMORPHIC) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 526 | if (kind() == Code::LOAD_IC || kind() == Code::STORE_IC) { |
| 527 | nexus()->ConfigureMegamorphic(); |
| 528 | } else if (kind() == Code::KEYED_LOAD_IC) { |
| 529 | KeyedLoadICNexus* nexus = casted_nexus<KeyedLoadICNexus>(); |
| 530 | nexus->ConfigureMegamorphicKeyed(key->IsName() ? PROPERTY : ELEMENT); |
| 531 | } else { |
| 532 | DCHECK(kind() == Code::KEYED_STORE_IC); |
| 533 | KeyedStoreICNexus* nexus = casted_nexus<KeyedStoreICNexus>(); |
| 534 | nexus->ConfigureMegamorphicKeyed(key->IsName() ? PROPERTY : ELEMENT); |
| 535 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 536 | } else { |
| 537 | UNREACHABLE(); |
| 538 | } |
| 539 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 540 | vector_set_ = true; |
| 541 | OnTypeFeedbackChanged(isolate(), get_host()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 542 | } |
| 543 | |
| 544 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 545 | void IC::ConfigureVectorState(Handle<Name> name, Handle<Map> map, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 546 | Handle<Code> handler) { |
| 547 | DCHECK(UseVector()); |
| 548 | if (kind() == Code::LOAD_IC) { |
| 549 | LoadICNexus* nexus = casted_nexus<LoadICNexus>(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 550 | nexus->ConfigureMonomorphic(map, handler); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 551 | } else if (kind() == Code::LOAD_GLOBAL_IC) { |
| 552 | LoadGlobalICNexus* nexus = casted_nexus<LoadGlobalICNexus>(); |
| 553 | nexus->ConfigureHandlerMode(handler); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 554 | } else if (kind() == Code::KEYED_LOAD_IC) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 555 | KeyedLoadICNexus* nexus = casted_nexus<KeyedLoadICNexus>(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 556 | nexus->ConfigureMonomorphic(name, map, handler); |
| 557 | } else if (kind() == Code::STORE_IC) { |
| 558 | StoreICNexus* nexus = casted_nexus<StoreICNexus>(); |
| 559 | nexus->ConfigureMonomorphic(map, handler); |
| 560 | } else { |
| 561 | DCHECK(kind() == Code::KEYED_STORE_IC); |
| 562 | KeyedStoreICNexus* nexus = casted_nexus<KeyedStoreICNexus>(); |
| 563 | nexus->ConfigureMonomorphic(name, map, handler); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 564 | } |
| 565 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 566 | vector_set_ = true; |
| 567 | OnTypeFeedbackChanged(isolate(), get_host()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 571 | void IC::ConfigureVectorState(Handle<Name> name, MapHandleList* maps, |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 572 | CodeHandleList* handlers) { |
| 573 | DCHECK(UseVector()); |
| 574 | if (kind() == Code::LOAD_IC) { |
| 575 | LoadICNexus* nexus = casted_nexus<LoadICNexus>(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 576 | nexus->ConfigurePolymorphic(maps, handlers); |
| 577 | } else if (kind() == Code::KEYED_LOAD_IC) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 578 | KeyedLoadICNexus* nexus = casted_nexus<KeyedLoadICNexus>(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 579 | nexus->ConfigurePolymorphic(name, maps, handlers); |
| 580 | } else if (kind() == Code::STORE_IC) { |
| 581 | StoreICNexus* nexus = casted_nexus<StoreICNexus>(); |
| 582 | nexus->ConfigurePolymorphic(maps, handlers); |
| 583 | } else { |
| 584 | DCHECK(kind() == Code::KEYED_STORE_IC); |
| 585 | KeyedStoreICNexus* nexus = casted_nexus<KeyedStoreICNexus>(); |
| 586 | nexus->ConfigurePolymorphic(name, maps, handlers); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 587 | } |
| 588 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 589 | vector_set_ = true; |
| 590 | OnTypeFeedbackChanged(isolate(), get_host()); |
| 591 | } |
| 592 | |
| 593 | |
| 594 | void IC::ConfigureVectorState(MapHandleList* maps, |
| 595 | MapHandleList* transitioned_maps, |
| 596 | CodeHandleList* handlers) { |
| 597 | DCHECK(UseVector()); |
| 598 | DCHECK(kind() == Code::KEYED_STORE_IC); |
| 599 | KeyedStoreICNexus* nexus = casted_nexus<KeyedStoreICNexus>(); |
| 600 | nexus->ConfigurePolymorphic(maps, transitioned_maps, handlers); |
| 601 | |
| 602 | vector_set_ = true; |
| 603 | OnTypeFeedbackChanged(isolate(), get_host()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 604 | } |
| 605 | |
| 606 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 607 | MaybeHandle<Object> LoadIC::Load(Handle<Object> object, Handle<Name> name) { |
| 608 | // If the object is undefined or null it's illegal to try to get any |
| 609 | // of its properties; throw a TypeError in that case. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 610 | if (object->IsUndefined(isolate()) || object->IsNull(isolate())) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 611 | return TypeError(MessageTemplate::kNonObjectPropertyLoad, object, name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 612 | } |
| 613 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 614 | bool use_ic = MigrateDeprecated(object) ? false : FLAG_use_ic; |
| 615 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 616 | if (state() != UNINITIALIZED) { |
| 617 | JSObject::MakePrototypesFast(object, kStartAtReceiver, isolate()); |
| 618 | update_receiver_map(object); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 619 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 620 | // Named lookup in the object. |
| 621 | LookupIterator it(object, name); |
| 622 | LookupForRead(&it); |
| 623 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 624 | if (it.IsFound() || !ShouldThrowReferenceError()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 625 | // Update inline cache and stub cache. |
| 626 | if (use_ic) UpdateCaches(&it); |
| 627 | |
| 628 | // Get the property. |
| 629 | Handle<Object> result; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 630 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 631 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), result, Object::GetProperty(&it), |
| 632 | Object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 633 | if (it.IsFound()) { |
| 634 | return result; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 635 | } else if (!ShouldThrowReferenceError()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 636 | LOG(isolate(), SuspectReadEvent(*name, *object)); |
| 637 | return result; |
| 638 | } |
| 639 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 640 | return ReferenceError(name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 641 | } |
| 642 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 643 | MaybeHandle<Object> LoadGlobalIC::Load(Handle<Name> name) { |
| 644 | Handle<JSGlobalObject> global = isolate()->global_object(); |
| 645 | |
| 646 | if (name->IsString()) { |
| 647 | // Look up in script context table. |
| 648 | Handle<String> str_name = Handle<String>::cast(name); |
| 649 | Handle<ScriptContextTable> script_contexts( |
| 650 | global->native_context()->script_context_table()); |
| 651 | |
| 652 | ScriptContextTable::LookupResult lookup_result; |
| 653 | if (ScriptContextTable::Lookup(script_contexts, str_name, &lookup_result)) { |
| 654 | Handle<Object> result = |
| 655 | FixedArray::get(*ScriptContextTable::GetContext( |
| 656 | script_contexts, lookup_result.context_index), |
| 657 | lookup_result.slot_index, isolate()); |
| 658 | if (result->IsTheHole(isolate())) { |
| 659 | // Do not install stubs and stay pre-monomorphic for |
| 660 | // uninitialized accesses. |
| 661 | return ReferenceError(name); |
| 662 | } |
| 663 | |
| 664 | if (FLAG_use_ic && LoadScriptContextFieldStub::Accepted(&lookup_result)) { |
| 665 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadScriptContextFieldStub); |
| 666 | LoadScriptContextFieldStub stub(isolate(), &lookup_result); |
| 667 | PatchCache(name, stub.GetCode()); |
| 668 | TRACE_IC("LoadGlobalIC", name); |
| 669 | } |
| 670 | return result; |
| 671 | } |
| 672 | } |
| 673 | return LoadIC::Load(global, name); |
| 674 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 675 | |
| 676 | static bool AddOneReceiverMapIfMissing(MapHandleList* receiver_maps, |
| 677 | Handle<Map> new_receiver_map) { |
| 678 | DCHECK(!new_receiver_map.is_null()); |
| 679 | for (int current = 0; current < receiver_maps->length(); ++current) { |
| 680 | if (!receiver_maps->at(current).is_null() && |
| 681 | receiver_maps->at(current).is_identical_to(new_receiver_map)) { |
| 682 | return false; |
| 683 | } |
| 684 | } |
| 685 | receiver_maps->Add(new_receiver_map); |
| 686 | return true; |
| 687 | } |
| 688 | |
| 689 | |
| 690 | bool IC::UpdatePolymorphicIC(Handle<Name> name, Handle<Code> code) { |
| 691 | if (!code->is_handler()) return false; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 692 | if (is_keyed() && state() != RECOMPUTE_HANDLER) return false; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 693 | Handle<Map> map = receiver_map(); |
| 694 | MapHandleList maps; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 695 | CodeHandleList handlers; |
| 696 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 697 | TargetMaps(&maps); |
| 698 | int number_of_maps = maps.length(); |
| 699 | int deprecated_maps = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 700 | int handler_to_overwrite = -1; |
| 701 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 702 | for (int i = 0; i < number_of_maps; i++) { |
| 703 | Handle<Map> current_map = maps.at(i); |
| 704 | if (current_map->is_deprecated()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 705 | // Filter out deprecated maps to ensure their instances get migrated. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 706 | ++deprecated_maps; |
| 707 | } else if (map.is_identical_to(current_map)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 708 | // If the receiver type is already in the polymorphic IC, this indicates |
| 709 | // there was a prototoype chain failure. In that case, just overwrite the |
| 710 | // handler. |
| 711 | handler_to_overwrite = i; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 712 | } else if (handler_to_overwrite == -1 && |
| 713 | IsTransitionOfMonomorphicTarget(*current_map, *map)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 714 | handler_to_overwrite = i; |
| 715 | } |
| 716 | } |
| 717 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 718 | int number_of_valid_maps = |
| 719 | number_of_maps - deprecated_maps - (handler_to_overwrite != -1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 720 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 721 | if (number_of_valid_maps >= 4) return false; |
| 722 | if (number_of_maps == 0 && state() != MONOMORPHIC && state() != POLYMORPHIC) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 723 | return false; |
| 724 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 725 | DCHECK(UseVector()); |
| 726 | if (!nexus()->FindHandlers(&handlers, maps.length())) return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 727 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 728 | number_of_valid_maps++; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 729 | if (number_of_valid_maps > 1 && is_keyed()) return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 730 | Handle<Code> ic; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 731 | if (number_of_valid_maps == 1) { |
| 732 | ConfigureVectorState(name, receiver_map(), code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 733 | } else { |
| 734 | if (handler_to_overwrite >= 0) { |
| 735 | handlers.Set(handler_to_overwrite, code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 736 | if (!map.is_identical_to(maps.at(handler_to_overwrite))) { |
| 737 | maps.Set(handler_to_overwrite, map); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 738 | } |
| 739 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 740 | maps.Add(map); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 741 | handlers.Add(code); |
| 742 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 743 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 744 | ConfigureVectorState(name, &maps, &handlers); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 745 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 746 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 747 | return true; |
| 748 | } |
| 749 | |
| 750 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 751 | void IC::UpdateMonomorphicIC(Handle<Code> handler, Handle<Name> name) { |
| 752 | DCHECK(handler->is_handler()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 753 | ConfigureVectorState(name, receiver_map(), handler); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 754 | } |
| 755 | |
| 756 | |
| 757 | void IC::CopyICToMegamorphicCache(Handle<Name> name) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 758 | MapHandleList maps; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 759 | CodeHandleList handlers; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 760 | TargetMaps(&maps); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 761 | if (!nexus()->FindHandlers(&handlers, maps.length())) return; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 762 | for (int i = 0; i < maps.length(); i++) { |
| 763 | UpdateMegamorphicCache(*maps.at(i), *name, *handlers.at(i)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 764 | } |
| 765 | } |
| 766 | |
| 767 | |
| 768 | bool IC::IsTransitionOfMonomorphicTarget(Map* source_map, Map* target_map) { |
| 769 | if (source_map == NULL) return true; |
| 770 | if (target_map == NULL) return false; |
| 771 | ElementsKind target_elements_kind = target_map->elements_kind(); |
| 772 | bool more_general_transition = IsMoreGeneralElementsKindTransition( |
| 773 | source_map->elements_kind(), target_elements_kind); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 774 | Map* transitioned_map = nullptr; |
| 775 | if (more_general_transition) { |
| 776 | MapHandleList map_list; |
| 777 | map_list.Add(handle(target_map)); |
| 778 | transitioned_map = source_map->FindElementsKindTransitionedMap(&map_list); |
| 779 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 780 | return transitioned_map == target_map; |
| 781 | } |
| 782 | |
| 783 | |
| 784 | void IC::PatchCache(Handle<Name> name, Handle<Code> code) { |
| 785 | switch (state()) { |
| 786 | case UNINITIALIZED: |
| 787 | case PREMONOMORPHIC: |
| 788 | UpdateMonomorphicIC(code, name); |
| 789 | break; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 790 | case RECOMPUTE_HANDLER: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 791 | case MONOMORPHIC: |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 792 | if (kind() == Code::LOAD_GLOBAL_IC) { |
| 793 | UpdateMonomorphicIC(code, name); |
| 794 | break; |
| 795 | } |
| 796 | // Fall through. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 797 | case POLYMORPHIC: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 798 | if (!is_keyed() || state() == RECOMPUTE_HANDLER) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 799 | if (UpdatePolymorphicIC(name, code)) break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 800 | // For keyed stubs, we can't know whether old handlers were for the |
| 801 | // same key. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 802 | CopyICToMegamorphicCache(name); |
| 803 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 804 | DCHECK(UseVector()); |
| 805 | ConfigureVectorState(MEGAMORPHIC, name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 806 | // Fall through. |
| 807 | case MEGAMORPHIC: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 808 | UpdateMegamorphicCache(*receiver_map(), *name, *code); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 809 | // Indicate that we've handled this case. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 810 | DCHECK(UseVector()); |
| 811 | vector_set_ = true; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 812 | break; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 813 | case GENERIC: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 814 | UNREACHABLE(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 815 | break; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 816 | } |
| 817 | } |
| 818 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 819 | Handle<Code> LoadIC::initialize_stub_in_optimized_code(Isolate* isolate) { |
| 820 | if (FLAG_tf_load_ic_stub) { |
| 821 | return LoadICTFStub(isolate).GetCode(); |
| 822 | } |
| 823 | return LoadICStub(isolate).GetCode(); |
| 824 | } |
| 825 | |
| 826 | Handle<Code> LoadGlobalIC::initialize_stub_in_optimized_code( |
| 827 | Isolate* isolate, ExtraICState extra_state) { |
| 828 | return LoadGlobalICStub(isolate, LoadGlobalICState(extra_state)).GetCode(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 829 | } |
| 830 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 831 | Handle<Code> KeyedLoadIC::initialize_stub_in_optimized_code( |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 832 | Isolate* isolate, ExtraICState extra_state) { |
| 833 | // TODO(ishell): remove extra_ic_state |
| 834 | return KeyedLoadICStub(isolate).GetCode(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 835 | } |
| 836 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 837 | Handle<Code> KeyedStoreIC::initialize_stub_in_optimized_code( |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 838 | Isolate* isolate, LanguageMode language_mode) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 839 | StoreICState state = StoreICState(language_mode); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 840 | return VectorKeyedStoreICStub(isolate, state).GetCode(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 841 | } |
| 842 | |
| 843 | |
| 844 | Handle<Code> KeyedStoreIC::ChooseMegamorphicStub(Isolate* isolate, |
| 845 | ExtraICState extra_state) { |
| 846 | LanguageMode mode = StoreICState::GetLanguageMode(extra_state); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 847 | return is_strict(mode) |
| 848 | ? isolate->builtins()->KeyedStoreIC_Megamorphic_Strict() |
| 849 | : isolate->builtins()->KeyedStoreIC_Megamorphic(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 850 | } |
| 851 | |
| 852 | |
| 853 | Handle<Code> LoadIC::SimpleFieldLoad(FieldIndex index) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 854 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadFieldStub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 855 | LoadFieldStub stub(isolate(), index); |
| 856 | return stub.GetCode(); |
| 857 | } |
| 858 | |
| 859 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 860 | bool IsCompatibleReceiver(LookupIterator* lookup, Handle<Map> receiver_map) { |
| 861 | DCHECK(lookup->state() == LookupIterator::ACCESSOR); |
| 862 | Isolate* isolate = lookup->isolate(); |
| 863 | Handle<Object> accessors = lookup->GetAccessors(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 864 | if (accessors->IsAccessorInfo()) { |
| 865 | Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(accessors); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 866 | if (info->getter() != NULL && |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 867 | !AccessorInfo::IsCompatibleReceiverMap(isolate, info, receiver_map)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 868 | return false; |
| 869 | } |
| 870 | } else if (accessors->IsAccessorPair()) { |
| 871 | Handle<Object> getter(Handle<AccessorPair>::cast(accessors)->getter(), |
| 872 | isolate); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 873 | if (!getter->IsJSFunction() && !getter->IsFunctionTemplateInfo()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 874 | return false; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 875 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 876 | Handle<JSObject> holder = lookup->GetHolder<JSObject>(); |
| 877 | Handle<Object> receiver = lookup->GetReceiver(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 878 | if (holder->HasFastProperties()) { |
| 879 | if (getter->IsJSFunction()) { |
| 880 | Handle<JSFunction> function = Handle<JSFunction>::cast(getter); |
| 881 | if (!receiver->IsJSObject() && !function->shared()->IsBuiltin() && |
| 882 | is_sloppy(function->shared()->language_mode())) { |
| 883 | // Calling sloppy non-builtins with a value as the receiver |
| 884 | // requires boxing. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 885 | return false; |
| 886 | } |
| 887 | } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 888 | CallOptimization call_optimization(getter); |
| 889 | if (call_optimization.is_simple_api_call() && |
| 890 | !call_optimization.IsCompatibleReceiverMap(receiver_map, holder)) { |
| 891 | return false; |
| 892 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 893 | } |
| 894 | } |
| 895 | return true; |
| 896 | } |
| 897 | |
| 898 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 899 | void LoadIC::UpdateCaches(LookupIterator* lookup) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 900 | if (state() == UNINITIALIZED && kind() != Code::LOAD_GLOBAL_IC) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 901 | // This is the first time we execute this inline cache. Set the target to |
| 902 | // the pre monomorphic stub to delay setting the monomorphic state. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 903 | ConfigureVectorState(PREMONOMORPHIC, Handle<Object>()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 904 | TRACE_IC("LoadIC", lookup->name()); |
| 905 | return; |
| 906 | } |
| 907 | |
| 908 | Handle<Code> code; |
| 909 | if (lookup->state() == LookupIterator::JSPROXY || |
| 910 | lookup->state() == LookupIterator::ACCESS_CHECK) { |
| 911 | code = slow_stub(); |
| 912 | } else if (!lookup->IsFound()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 913 | if (kind() == Code::LOAD_IC || kind() == Code::LOAD_GLOBAL_IC) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 914 | code = NamedLoadHandlerCompiler::ComputeLoadNonexistent(lookup->name(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 915 | receiver_map()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 916 | // TODO(jkummerow/verwaest): Introduce a builtin that handles this case. |
| 917 | if (code.is_null()) code = slow_stub(); |
| 918 | } else { |
| 919 | code = slow_stub(); |
| 920 | } |
| 921 | } else { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 922 | if (kind() == Code::LOAD_GLOBAL_IC && |
| 923 | lookup->state() == LookupIterator::DATA && |
| 924 | lookup->GetHolder<Object>()->IsJSGlobalObject()) { |
| 925 | #if DEBUG |
| 926 | Handle<Object> holder = lookup->GetHolder<Object>(); |
| 927 | Handle<Object> receiver = lookup->GetReceiver(); |
| 928 | DCHECK_EQ(*receiver, *holder); |
| 929 | #endif |
| 930 | // Now update the cell in the feedback vector. |
| 931 | LoadGlobalICNexus* nexus = casted_nexus<LoadGlobalICNexus>(); |
| 932 | nexus->ConfigurePropertyCellMode(lookup->GetPropertyCell()); |
| 933 | TRACE_IC("LoadGlobalIC", lookup->name()); |
| 934 | return; |
| 935 | } else if (lookup->state() == LookupIterator::ACCESSOR) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 936 | if (!IsCompatibleReceiver(lookup, receiver_map())) { |
| 937 | TRACE_GENERIC_IC(isolate(), "LoadIC", "incompatible receiver type"); |
| 938 | code = slow_stub(); |
| 939 | } |
| 940 | } else if (lookup->state() == LookupIterator::INTERCEPTOR) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 941 | if (kind() == Code::LOAD_GLOBAL_IC) { |
| 942 | // The interceptor handler requires name but it is not passed explicitly |
| 943 | // to LoadGlobalIC and the LoadGlobalIC dispatcher also does not load |
| 944 | // it so we will just use slow stub. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 945 | code = slow_stub(); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 946 | } else { |
| 947 | // Perform a lookup behind the interceptor. Copy the LookupIterator |
| 948 | // since the original iterator will be used to fetch the value. |
| 949 | LookupIterator it = *lookup; |
| 950 | it.Next(); |
| 951 | LookupForRead(&it); |
| 952 | if (it.state() == LookupIterator::ACCESSOR && |
| 953 | !IsCompatibleReceiver(&it, receiver_map())) { |
| 954 | TRACE_GENERIC_IC(isolate(), "LoadIC", "incompatible receiver type"); |
| 955 | code = slow_stub(); |
| 956 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 957 | } |
| 958 | } |
| 959 | if (code.is_null()) code = ComputeHandler(lookup); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 960 | } |
| 961 | |
| 962 | PatchCache(lookup->name(), code); |
| 963 | TRACE_IC("LoadIC", lookup->name()); |
| 964 | } |
| 965 | |
| 966 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 967 | void IC::UpdateMegamorphicCache(Map* map, Name* name, Code* code) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 968 | isolate()->stub_cache()->Set(name, map, code); |
| 969 | } |
| 970 | |
| 971 | |
| 972 | Handle<Code> IC::ComputeHandler(LookupIterator* lookup, Handle<Object> value) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 973 | // Try to find a globally shared handler stub. |
| 974 | Handle<Code> code = GetMapIndependentHandler(lookup); |
| 975 | if (!code.is_null()) return code; |
| 976 | |
| 977 | // Otherwise check the map's handler cache for a map-specific handler, and |
| 978 | // compile one if the cache comes up empty. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 979 | bool receiver_is_holder = |
| 980 | lookup->GetReceiver().is_identical_to(lookup->GetHolder<JSObject>()); |
| 981 | CacheHolderFlag flag; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 982 | Handle<Map> stub_holder_map; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 983 | if (kind() == Code::LOAD_IC || kind() == Code::LOAD_GLOBAL_IC || |
| 984 | kind() == Code::KEYED_LOAD_IC) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 985 | stub_holder_map = IC::GetHandlerCacheHolder( |
| 986 | receiver_map(), receiver_is_holder, isolate(), &flag); |
| 987 | } else { |
| 988 | DCHECK(kind() == Code::STORE_IC || kind() == Code::KEYED_STORE_IC); |
| 989 | // Store handlers cannot be cached on prototypes. |
| 990 | flag = kCacheOnReceiver; |
| 991 | stub_holder_map = receiver_map(); |
| 992 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 993 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 994 | code = PropertyHandlerCompiler::Find(lookup->name(), stub_holder_map, kind(), |
| 995 | flag); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 996 | // Use the cached value if it exists, and if it is different from the |
| 997 | // handler that just missed. |
| 998 | if (!code.is_null()) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 999 | Handle<Code> handler; |
| 1000 | if (maybe_handler_.ToHandle(&handler)) { |
| 1001 | if (!handler.is_identical_to(code)) { |
| 1002 | TRACE_HANDLER_STATS(isolate(), IC_HandlerCacheHit); |
| 1003 | return code; |
| 1004 | } |
| 1005 | } else { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1006 | // maybe_handler_ is only populated for MONOMORPHIC and POLYMORPHIC ICs. |
| 1007 | // In MEGAMORPHIC case, check if the handler in the megamorphic stub |
| 1008 | // cache (which just missed) is different from the cached handler. |
| 1009 | if (state() == MEGAMORPHIC && lookup->GetReceiver()->IsHeapObject()) { |
| 1010 | Map* map = Handle<HeapObject>::cast(lookup->GetReceiver())->map(); |
| 1011 | Code* megamorphic_cached_code = |
| 1012 | isolate()->stub_cache()->Get(*lookup->name(), map, code->flags()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1013 | if (megamorphic_cached_code != *code) { |
| 1014 | TRACE_HANDLER_STATS(isolate(), IC_HandlerCacheHit); |
| 1015 | return code; |
| 1016 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1017 | } else { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1018 | TRACE_HANDLER_STATS(isolate(), IC_HandlerCacheHit); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1019 | return code; |
| 1020 | } |
| 1021 | } |
| 1022 | } |
| 1023 | |
| 1024 | code = CompileHandler(lookup, value, flag); |
| 1025 | DCHECK(code->is_handler()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1026 | DCHECK(Code::ExtractCacheHolderFromFlags(code->flags()) == flag); |
| 1027 | Map::UpdateCodeCache(stub_holder_map, lookup->name(), code); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1028 | |
| 1029 | return code; |
| 1030 | } |
| 1031 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1032 | Handle<Code> LoadIC::GetMapIndependentHandler(LookupIterator* lookup) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1033 | Handle<Object> receiver = lookup->GetReceiver(); |
| 1034 | if (receiver->IsString() && |
| 1035 | Name::Equals(isolate()->factory()->length_string(), lookup->name())) { |
| 1036 | FieldIndex index = FieldIndex::ForInObjectOffset(String::kLengthOffset); |
| 1037 | return SimpleFieldLoad(index); |
| 1038 | } |
| 1039 | |
| 1040 | if (receiver->IsStringWrapper() && |
| 1041 | Name::Equals(isolate()->factory()->length_string(), lookup->name())) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1042 | TRACE_HANDLER_STATS(isolate(), LoadIC_StringLengthStub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1043 | StringLengthStub string_length_stub(isolate()); |
| 1044 | return string_length_stub.GetCode(); |
| 1045 | } |
| 1046 | |
| 1047 | // Use specialized code for getting prototype of functions. |
| 1048 | if (receiver->IsJSFunction() && |
| 1049 | Name::Equals(isolate()->factory()->prototype_string(), lookup->name()) && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1050 | receiver->IsConstructor() && |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1051 | !Handle<JSFunction>::cast(receiver) |
| 1052 | ->map() |
| 1053 | ->has_non_instance_prototype()) { |
| 1054 | Handle<Code> stub; |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1055 | TRACE_HANDLER_STATS(isolate(), LoadIC_FunctionPrototypeStub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1056 | FunctionPrototypeStub function_prototype_stub(isolate()); |
| 1057 | return function_prototype_stub.GetCode(); |
| 1058 | } |
| 1059 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1060 | Handle<Map> map = receiver_map(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1061 | Handle<JSObject> holder = lookup->GetHolder<JSObject>(); |
| 1062 | bool receiver_is_holder = receiver.is_identical_to(holder); |
| 1063 | switch (lookup->state()) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1064 | case LookupIterator::INTERCEPTOR: |
| 1065 | break; // Custom-compiled handler. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1066 | |
| 1067 | case LookupIterator::ACCESSOR: { |
| 1068 | // Use simple field loads for some well-known callback properties. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1069 | // The method will only return true for absolute truths based on the |
| 1070 | // receiver maps. |
| 1071 | int object_offset; |
| 1072 | if (Accessors::IsJSObjectFieldAccessor(map, lookup->name(), |
| 1073 | &object_offset)) { |
| 1074 | FieldIndex index = FieldIndex::ForInObjectOffset(object_offset, *map); |
| 1075 | return SimpleFieldLoad(index); |
| 1076 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1077 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1078 | if (IsCompatibleReceiver(lookup, map)) { |
| 1079 | Handle<Object> accessors = lookup->GetAccessors(); |
| 1080 | if (accessors->IsAccessorPair()) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1081 | if (!holder->HasFastProperties()) { |
| 1082 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
| 1083 | return slow_stub(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1084 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1085 | // When debugging we need to go the slow path to flood the accessor. |
| 1086 | if (GetSharedFunctionInfo()->HasDebugInfo()) { |
| 1087 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
| 1088 | return slow_stub(); |
| 1089 | } |
| 1090 | break; // Custom-compiled handler. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1091 | } else if (accessors->IsAccessorInfo()) { |
| 1092 | Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(accessors); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1093 | if (v8::ToCData<Address>(info->getter()) == nullptr) { |
| 1094 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
| 1095 | return slow_stub(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1096 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1097 | // Ruled out by IsCompatibleReceiver() above. |
| 1098 | DCHECK(AccessorInfo::IsCompatibleReceiverMap(isolate(), info, map)); |
| 1099 | if (!holder->HasFastProperties()) return slow_stub(); |
| 1100 | if (receiver_is_holder) { |
| 1101 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadApiGetterStub); |
| 1102 | int index = lookup->GetAccessorIndex(); |
| 1103 | LoadApiGetterStub stub(isolate(), true, index); |
| 1104 | return stub.GetCode(); |
| 1105 | } |
| 1106 | if (info->is_sloppy() && !receiver->IsJSReceiver()) { |
| 1107 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
| 1108 | return slow_stub(); |
| 1109 | } |
| 1110 | break; // Custom-compiled handler. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1111 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1112 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1113 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
| 1114 | return slow_stub(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1115 | } |
| 1116 | |
| 1117 | case LookupIterator::DATA: { |
| 1118 | if (lookup->is_dictionary_holder()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1119 | if (kind() != Code::LOAD_IC && kind() != Code::LOAD_GLOBAL_IC) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1120 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
| 1121 | return slow_stub(); |
| 1122 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1123 | if (holder->IsJSGlobalObject()) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1124 | break; // Custom-compiled handler. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1125 | } |
| 1126 | // There is only one shared stub for loading normalized |
| 1127 | // properties. It does not traverse the prototype chain, so the |
| 1128 | // property must be found in the object for the stub to be |
| 1129 | // applicable. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1130 | if (!receiver_is_holder) { |
| 1131 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
| 1132 | return slow_stub(); |
| 1133 | } |
| 1134 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadNormal); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1135 | return isolate()->builtins()->LoadIC_Normal(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1136 | } |
| 1137 | |
| 1138 | // -------------- Fields -------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1139 | if (lookup->property_details().type() == DATA) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1140 | FieldIndex field = lookup->GetFieldIndex(); |
| 1141 | if (receiver_is_holder) { |
| 1142 | return SimpleFieldLoad(field); |
| 1143 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1144 | break; // Custom-compiled handler. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | // -------------- Constant properties -------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1148 | DCHECK(lookup->property_details().type() == DATA_CONSTANT); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1149 | if (receiver_is_holder) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1150 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadConstantStub); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1151 | LoadConstantStub stub(isolate(), lookup->GetConstantIndex()); |
| 1152 | return stub.GetCode(); |
| 1153 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1154 | break; // Custom-compiled handler. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1155 | } |
| 1156 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1157 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1158 | TRACE_HANDLER_STATS(isolate(), LoadIC_SlowStub); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1159 | return slow_stub(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1160 | case LookupIterator::ACCESS_CHECK: |
| 1161 | case LookupIterator::JSPROXY: |
| 1162 | case LookupIterator::NOT_FOUND: |
| 1163 | case LookupIterator::TRANSITION: |
| 1164 | UNREACHABLE(); |
| 1165 | } |
| 1166 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1167 | return Handle<Code>::null(); |
| 1168 | } |
| 1169 | |
| 1170 | Handle<Code> LoadIC::CompileHandler(LookupIterator* lookup, |
| 1171 | Handle<Object> unused, |
| 1172 | CacheHolderFlag cache_holder) { |
| 1173 | Handle<JSObject> holder = lookup->GetHolder<JSObject>(); |
| 1174 | #ifdef DEBUG |
| 1175 | // Only used by DCHECKs below. |
| 1176 | Handle<Object> receiver = lookup->GetReceiver(); |
| 1177 | bool receiver_is_holder = receiver.is_identical_to(holder); |
| 1178 | #endif |
| 1179 | // Non-map-specific handler stubs have already been selected. |
| 1180 | DCHECK(!receiver->IsString() || |
| 1181 | !Name::Equals(isolate()->factory()->length_string(), lookup->name())); |
| 1182 | DCHECK(!receiver->IsStringWrapper() || |
| 1183 | !Name::Equals(isolate()->factory()->length_string(), lookup->name())); |
| 1184 | |
| 1185 | DCHECK(!( |
| 1186 | receiver->IsJSFunction() && |
| 1187 | Name::Equals(isolate()->factory()->prototype_string(), lookup->name()) && |
| 1188 | receiver->IsConstructor() && |
| 1189 | !Handle<JSFunction>::cast(receiver) |
| 1190 | ->map() |
| 1191 | ->has_non_instance_prototype())); |
| 1192 | |
| 1193 | Handle<Map> map = receiver_map(); |
| 1194 | switch (lookup->state()) { |
| 1195 | case LookupIterator::INTERCEPTOR: { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1196 | DCHECK(!holder->GetNamedInterceptor()->getter()->IsUndefined(isolate())); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1197 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadInterceptor); |
| 1198 | NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder); |
| 1199 | // Perform a lookup behind the interceptor. Copy the LookupIterator since |
| 1200 | // the original iterator will be used to fetch the value. |
| 1201 | LookupIterator it = *lookup; |
| 1202 | it.Next(); |
| 1203 | LookupForRead(&it); |
| 1204 | return compiler.CompileLoadInterceptor(&it); |
| 1205 | } |
| 1206 | |
| 1207 | case LookupIterator::ACCESSOR: { |
| 1208 | #ifdef DEBUG |
| 1209 | int object_offset; |
| 1210 | DCHECK(!Accessors::IsJSObjectFieldAccessor(map, lookup->name(), |
| 1211 | &object_offset)); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1212 | #endif |
| 1213 | |
| 1214 | DCHECK(IsCompatibleReceiver(lookup, map)); |
| 1215 | Handle<Object> accessors = lookup->GetAccessors(); |
| 1216 | if (accessors->IsAccessorPair()) { |
| 1217 | DCHECK(holder->HasFastProperties()); |
| 1218 | DCHECK(!GetSharedFunctionInfo()->HasDebugInfo()); |
| 1219 | Handle<Object> getter(Handle<AccessorPair>::cast(accessors)->getter(), |
| 1220 | isolate()); |
| 1221 | CallOptimization call_optimization(getter); |
| 1222 | NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder); |
| 1223 | if (call_optimization.is_simple_api_call()) { |
| 1224 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadCallback); |
| 1225 | int index = lookup->GetAccessorIndex(); |
| 1226 | Handle<Code> code = compiler.CompileLoadCallback( |
| 1227 | lookup->name(), call_optimization, index); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1228 | return code; |
| 1229 | } |
| 1230 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadViaGetter); |
| 1231 | int expected_arguments = Handle<JSFunction>::cast(getter) |
| 1232 | ->shared() |
| 1233 | ->internal_formal_parameter_count(); |
| 1234 | return compiler.CompileLoadViaGetter( |
| 1235 | lookup->name(), lookup->GetAccessorIndex(), expected_arguments); |
| 1236 | } else { |
| 1237 | DCHECK(accessors->IsAccessorInfo()); |
| 1238 | Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(accessors); |
| 1239 | DCHECK(v8::ToCData<Address>(info->getter()) != nullptr); |
| 1240 | DCHECK(AccessorInfo::IsCompatibleReceiverMap(isolate(), info, map)); |
| 1241 | DCHECK(holder->HasFastProperties()); |
| 1242 | DCHECK(!receiver_is_holder); |
| 1243 | DCHECK(!info->is_sloppy() || receiver->IsJSReceiver()); |
| 1244 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadCallback); |
| 1245 | NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder); |
| 1246 | Handle<Code> code = compiler.CompileLoadCallback(lookup->name(), info); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1247 | return code; |
| 1248 | } |
| 1249 | UNREACHABLE(); |
| 1250 | } |
| 1251 | |
| 1252 | case LookupIterator::DATA: { |
| 1253 | if (lookup->is_dictionary_holder()) { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1254 | DCHECK(kind() == Code::LOAD_IC || kind() == Code::LOAD_GLOBAL_IC); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1255 | DCHECK(holder->IsJSGlobalObject()); |
| 1256 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadGlobal); |
| 1257 | NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder); |
| 1258 | Handle<PropertyCell> cell = lookup->GetPropertyCell(); |
| 1259 | Handle<Code> code = compiler.CompileLoadGlobal( |
| 1260 | cell, lookup->name(), lookup->IsConfigurable()); |
| 1261 | return code; |
| 1262 | } |
| 1263 | |
| 1264 | // -------------- Fields -------------- |
| 1265 | if (lookup->property_details().type() == DATA) { |
| 1266 | FieldIndex field = lookup->GetFieldIndex(); |
| 1267 | DCHECK(!receiver_is_holder); |
| 1268 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadField); |
| 1269 | NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder); |
| 1270 | return compiler.CompileLoadField(lookup->name(), field); |
| 1271 | } |
| 1272 | |
| 1273 | // -------------- Constant properties -------------- |
| 1274 | DCHECK(lookup->property_details().type() == DATA_CONSTANT); |
| 1275 | DCHECK(!receiver_is_holder); |
| 1276 | TRACE_HANDLER_STATS(isolate(), LoadIC_LoadConstant); |
| 1277 | NamedLoadHandlerCompiler compiler(isolate(), map, holder, cache_holder); |
| 1278 | return compiler.CompileLoadConstant(lookup->name(), |
| 1279 | lookup->GetConstantIndex()); |
| 1280 | } |
| 1281 | |
| 1282 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
| 1283 | case LookupIterator::ACCESS_CHECK: |
| 1284 | case LookupIterator::JSPROXY: |
| 1285 | case LookupIterator::NOT_FOUND: |
| 1286 | case LookupIterator::TRANSITION: |
| 1287 | UNREACHABLE(); |
| 1288 | } |
| 1289 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1290 | return slow_stub(); |
| 1291 | } |
| 1292 | |
| 1293 | |
| 1294 | static Handle<Object> TryConvertKey(Handle<Object> key, Isolate* isolate) { |
| 1295 | // This helper implements a few common fast cases for converting |
| 1296 | // non-smi keys of keyed loads/stores to a smi or a string. |
| 1297 | if (key->IsHeapNumber()) { |
| 1298 | double value = Handle<HeapNumber>::cast(key)->value(); |
| 1299 | if (std::isnan(value)) { |
| 1300 | key = isolate->factory()->nan_string(); |
| 1301 | } else { |
| 1302 | int int_value = FastD2I(value); |
| 1303 | if (value == int_value && Smi::IsValid(int_value)) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1304 | key = handle(Smi::FromInt(int_value), isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1305 | } |
| 1306 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1307 | } else if (key->IsUndefined(isolate)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1308 | key = isolate->factory()->undefined_string(); |
| 1309 | } |
| 1310 | return key; |
| 1311 | } |
| 1312 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1313 | void KeyedLoadIC::UpdateLoadElement(Handle<HeapObject> receiver) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1314 | Handle<Map> receiver_map(receiver->map(), isolate()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1315 | DCHECK(receiver_map->instance_type() != JS_VALUE_TYPE && |
| 1316 | receiver_map->instance_type() != JS_PROXY_TYPE); // Checked by caller. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1317 | MapHandleList target_receiver_maps; |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1318 | TargetMaps(&target_receiver_maps); |
| 1319 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1320 | if (target_receiver_maps.length() == 0) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1321 | Handle<Code> handler = |
| 1322 | PropertyICCompiler::ComputeKeyedLoadMonomorphicHandler( |
| 1323 | receiver_map, extra_ic_state()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1324 | return ConfigureVectorState(Handle<Name>(), receiver_map, handler); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1325 | } |
| 1326 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1327 | for (int i = 0; i < target_receiver_maps.length(); i++) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1328 | Handle<Map> map = target_receiver_maps.at(i); |
| 1329 | if (map.is_null()) continue; |
| 1330 | if (map->instance_type() == JS_VALUE_TYPE) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1331 | TRACE_GENERIC_IC(isolate(), "KeyedLoadIC", "JSValue"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1332 | return; |
| 1333 | } |
| 1334 | if (map->instance_type() == JS_PROXY_TYPE) { |
| 1335 | TRACE_GENERIC_IC(isolate(), "KeyedLoadIC", "JSProxy"); |
| 1336 | return; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1337 | } |
| 1338 | } |
| 1339 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1340 | // The first time a receiver is seen that is a transitioned version of the |
| 1341 | // previous monomorphic receiver type, assume the new ElementsKind is the |
| 1342 | // monomorphic type. This benefits global arrays that only transition |
| 1343 | // once, and all call sites accessing them are faster if they remain |
| 1344 | // monomorphic. If this optimistic assumption is not true, the IC will |
| 1345 | // miss again and it will become polymorphic and support both the |
| 1346 | // untransitioned and transitioned maps. |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1347 | if (state() == MONOMORPHIC && !receiver->IsString() && |
| 1348 | IsMoreGeneralElementsKindTransition( |
| 1349 | target_receiver_maps.at(0)->elements_kind(), |
| 1350 | Handle<JSObject>::cast(receiver)->GetElementsKind())) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1351 | Handle<Code> handler = |
| 1352 | PropertyICCompiler::ComputeKeyedLoadMonomorphicHandler( |
| 1353 | receiver_map, extra_ic_state()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1354 | return ConfigureVectorState(Handle<Name>(), receiver_map, handler); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1355 | } |
| 1356 | |
| 1357 | DCHECK(state() != GENERIC); |
| 1358 | |
| 1359 | // Determine the list of receiver maps that this call site has seen, |
| 1360 | // adding the map that was just encountered. |
| 1361 | if (!AddOneReceiverMapIfMissing(&target_receiver_maps, receiver_map)) { |
| 1362 | // If the miss wasn't due to an unseen map, a polymorphic stub |
| 1363 | // won't help, use the generic stub. |
| 1364 | TRACE_GENERIC_IC(isolate(), "KeyedLoadIC", "same map added twice"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1365 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1366 | } |
| 1367 | |
| 1368 | // If the maximum number of receiver maps has been exceeded, use the generic |
| 1369 | // version of the IC. |
| 1370 | if (target_receiver_maps.length() > kMaxKeyedPolymorphism) { |
| 1371 | TRACE_GENERIC_IC(isolate(), "KeyedLoadIC", "max polymorph exceeded"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1372 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1373 | } |
| 1374 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1375 | CodeHandleList handlers(target_receiver_maps.length()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1376 | TRACE_HANDLER_STATS(isolate(), KeyedLoadIC_PolymorphicElement); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1377 | ElementHandlerCompiler compiler(isolate()); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1378 | compiler.CompileElementHandlers(&target_receiver_maps, &handlers); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1379 | ConfigureVectorState(Handle<Name>(), &target_receiver_maps, &handlers); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1380 | } |
| 1381 | |
| 1382 | |
| 1383 | MaybeHandle<Object> KeyedLoadIC::Load(Handle<Object> object, |
| 1384 | Handle<Object> key) { |
| 1385 | if (MigrateDeprecated(object)) { |
| 1386 | Handle<Object> result; |
| 1387 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1388 | isolate(), result, Runtime::GetObjectProperty(isolate(), object, key), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1389 | Object); |
| 1390 | return result; |
| 1391 | } |
| 1392 | |
| 1393 | Handle<Object> load_handle; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1394 | |
| 1395 | // Check for non-string values that can be converted into an |
| 1396 | // internalized string directly or is representable as a smi. |
| 1397 | key = TryConvertKey(key, isolate()); |
| 1398 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1399 | uint32_t index; |
| 1400 | if ((key->IsInternalizedString() && |
| 1401 | !String::cast(*key)->AsArrayIndex(&index)) || |
| 1402 | key->IsSymbol()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1403 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), load_handle, |
| 1404 | LoadIC::Load(object, Handle<Name>::cast(key)), |
| 1405 | Object); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1406 | } else if (FLAG_use_ic && !object->IsAccessCheckNeeded() && |
| 1407 | !object->IsJSValue()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1408 | if (object->IsJSObject() || (object->IsString() && key->IsNumber())) { |
| 1409 | Handle<HeapObject> receiver = Handle<HeapObject>::cast(object); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1410 | if (object->IsString() || key->IsSmi()) UpdateLoadElement(receiver); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1411 | } |
| 1412 | } |
| 1413 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1414 | if (!is_vector_set()) { |
| 1415 | ConfigureVectorState(MEGAMORPHIC, key); |
| 1416 | TRACE_GENERIC_IC(isolate(), "KeyedLoadIC", "set generic"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1417 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1418 | TRACE_IC("LoadIC", key); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1419 | |
| 1420 | if (!load_handle.is_null()) return load_handle; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1421 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1422 | Handle<Object> result; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1423 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), result, |
| 1424 | Runtime::GetObjectProperty(isolate(), object, key), |
| 1425 | Object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1426 | return result; |
| 1427 | } |
| 1428 | |
| 1429 | |
| 1430 | bool StoreIC::LookupForWrite(LookupIterator* it, Handle<Object> value, |
| 1431 | JSReceiver::StoreFromKeyed store_mode) { |
| 1432 | // Disable ICs for non-JSObjects for now. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1433 | Handle<Object> object = it->GetReceiver(); |
| 1434 | if (!object->IsJSObject()) return false; |
| 1435 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 1436 | DCHECK(!receiver->map()->is_deprecated()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1437 | |
| 1438 | for (; it->IsFound(); it->Next()) { |
| 1439 | switch (it->state()) { |
| 1440 | case LookupIterator::NOT_FOUND: |
| 1441 | case LookupIterator::TRANSITION: |
| 1442 | UNREACHABLE(); |
| 1443 | case LookupIterator::JSPROXY: |
| 1444 | return false; |
| 1445 | case LookupIterator::INTERCEPTOR: { |
| 1446 | Handle<JSObject> holder = it->GetHolder<JSObject>(); |
| 1447 | InterceptorInfo* info = holder->GetNamedInterceptor(); |
| 1448 | if (it->HolderIsReceiverOrHiddenPrototype()) { |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1449 | return !info->non_masking() && receiver.is_identical_to(holder) && |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1450 | !info->setter()->IsUndefined(it->isolate()); |
| 1451 | } else if (!info->getter()->IsUndefined(it->isolate()) || |
| 1452 | !info->query()->IsUndefined(it->isolate())) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1453 | return false; |
| 1454 | } |
| 1455 | break; |
| 1456 | } |
| 1457 | case LookupIterator::ACCESS_CHECK: |
| 1458 | if (it->GetHolder<JSObject>()->IsAccessCheckNeeded()) return false; |
| 1459 | break; |
| 1460 | case LookupIterator::ACCESSOR: |
| 1461 | return !it->IsReadOnly(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1462 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
| 1463 | return false; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1464 | case LookupIterator::DATA: { |
| 1465 | if (it->IsReadOnly()) return false; |
| 1466 | Handle<JSObject> holder = it->GetHolder<JSObject>(); |
| 1467 | if (receiver.is_identical_to(holder)) { |
| 1468 | it->PrepareForDataProperty(value); |
| 1469 | // The previous receiver map might just have been deprecated, |
| 1470 | // so reload it. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1471 | update_receiver_map(receiver); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1472 | return true; |
| 1473 | } |
| 1474 | |
| 1475 | // Receiver != holder. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1476 | if (receiver->IsJSGlobalProxy()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1477 | PrototypeIterator iter(it->isolate(), receiver); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1478 | return it->GetHolder<Object>().is_identical_to( |
| 1479 | PrototypeIterator::GetCurrent(iter)); |
| 1480 | } |
| 1481 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1482 | if (it->HolderIsReceiverOrHiddenPrototype()) return false; |
| 1483 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1484 | if (it->ExtendingNonExtensible(receiver)) return false; |
| 1485 | it->PrepareTransitionToDataProperty(receiver, value, NONE, store_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1486 | return it->IsCacheableTransition(); |
| 1487 | } |
| 1488 | } |
| 1489 | } |
| 1490 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1491 | receiver = it->GetStoreTarget(); |
| 1492 | if (it->ExtendingNonExtensible(receiver)) return false; |
| 1493 | it->PrepareTransitionToDataProperty(receiver, value, NONE, store_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1494 | return it->IsCacheableTransition(); |
| 1495 | } |
| 1496 | |
| 1497 | |
| 1498 | MaybeHandle<Object> StoreIC::Store(Handle<Object> object, Handle<Name> name, |
| 1499 | Handle<Object> value, |
| 1500 | JSReceiver::StoreFromKeyed store_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1501 | if (object->IsJSGlobalObject() && name->IsString()) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1502 | // Look up in script context table. |
| 1503 | Handle<String> str_name = Handle<String>::cast(name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1504 | Handle<JSGlobalObject> global = Handle<JSGlobalObject>::cast(object); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1505 | Handle<ScriptContextTable> script_contexts( |
| 1506 | global->native_context()->script_context_table()); |
| 1507 | |
| 1508 | ScriptContextTable::LookupResult lookup_result; |
| 1509 | if (ScriptContextTable::Lookup(script_contexts, str_name, &lookup_result)) { |
| 1510 | Handle<Context> script_context = ScriptContextTable::GetContext( |
| 1511 | script_contexts, lookup_result.context_index); |
| 1512 | if (lookup_result.mode == CONST) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1513 | return TypeError(MessageTemplate::kConstAssign, object, name); |
| 1514 | } |
| 1515 | |
| 1516 | Handle<Object> previous_value = |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1517 | FixedArray::get(*script_context, lookup_result.slot_index, isolate()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1518 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1519 | if (previous_value->IsTheHole(isolate())) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1520 | // Do not install stubs and stay pre-monomorphic for |
| 1521 | // uninitialized accesses. |
| 1522 | return ReferenceError(name); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1523 | } |
| 1524 | |
| 1525 | if (FLAG_use_ic && |
| 1526 | StoreScriptContextFieldStub::Accepted(&lookup_result)) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1527 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreScriptContextFieldStub); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1528 | StoreScriptContextFieldStub stub(isolate(), &lookup_result); |
| 1529 | PatchCache(name, stub.GetCode()); |
| 1530 | } |
| 1531 | |
| 1532 | script_context->set(lookup_result.slot_index, *value); |
| 1533 | return value; |
| 1534 | } |
| 1535 | } |
| 1536 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1537 | // TODO(verwaest): Let SetProperty do the migration, since storing a property |
| 1538 | // might deprecate the current map again, if value does not fit. |
| 1539 | if (MigrateDeprecated(object) || object->IsJSProxy()) { |
| 1540 | Handle<Object> result; |
| 1541 | ASSIGN_RETURN_ON_EXCEPTION( |
| 1542 | isolate(), result, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1543 | Object::SetProperty(object, name, value, language_mode()), Object); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1544 | return result; |
| 1545 | } |
| 1546 | |
| 1547 | // If the object is undefined or null it's illegal to try to set any |
| 1548 | // properties on it; throw a TypeError in that case. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1549 | if (object->IsUndefined(isolate()) || object->IsNull(isolate())) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1550 | return TypeError(MessageTemplate::kNonObjectPropertyStore, object, name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1551 | } |
| 1552 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1553 | if (state() != UNINITIALIZED) { |
| 1554 | JSObject::MakePrototypesFast(object, kStartAtPrototype, isolate()); |
| 1555 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1556 | LookupIterator it(object, name); |
| 1557 | if (FLAG_use_ic) UpdateCaches(&it, value, store_mode); |
| 1558 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1559 | MAYBE_RETURN_NULL( |
| 1560 | Object::SetProperty(&it, value, language_mode(), store_mode)); |
| 1561 | return value; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1562 | } |
| 1563 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1564 | Handle<Code> CallIC::initialize_stub_in_optimized_code( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1565 | Isolate* isolate, int argc, ConvertReceiverMode mode, |
| 1566 | TailCallMode tail_call_mode) { |
| 1567 | CallICStub stub(isolate, CallICState(argc, mode, tail_call_mode)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1568 | Handle<Code> code = stub.GetCode(); |
| 1569 | return code; |
| 1570 | } |
| 1571 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1572 | Handle<Code> StoreIC::initialize_stub_in_optimized_code( |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1573 | Isolate* isolate, LanguageMode language_mode) { |
| 1574 | VectorStoreICStub stub(isolate, StoreICState(language_mode)); |
| 1575 | return stub.GetCode(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1576 | } |
| 1577 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1578 | void StoreIC::UpdateCaches(LookupIterator* lookup, Handle<Object> value, |
| 1579 | JSReceiver::StoreFromKeyed store_mode) { |
| 1580 | if (state() == UNINITIALIZED) { |
| 1581 | // This is the first time we execute this inline cache. Set the target to |
| 1582 | // the pre monomorphic stub to delay setting the monomorphic state. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1583 | ConfigureVectorState(PREMONOMORPHIC, Handle<Object>()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1584 | TRACE_IC("StoreIC", lookup->name()); |
| 1585 | return; |
| 1586 | } |
| 1587 | |
| 1588 | bool use_ic = LookupForWrite(lookup, value, store_mode); |
| 1589 | if (!use_ic) { |
| 1590 | TRACE_GENERIC_IC(isolate(), "StoreIC", "LookupForWrite said 'false'"); |
| 1591 | } |
| 1592 | Handle<Code> code = use_ic ? ComputeHandler(lookup, value) : slow_stub(); |
| 1593 | |
| 1594 | PatchCache(lookup->name(), code); |
| 1595 | TRACE_IC("StoreIC", lookup->name()); |
| 1596 | } |
| 1597 | |
| 1598 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1599 | static Handle<Code> PropertyCellStoreHandler( |
| 1600 | Isolate* isolate, Handle<JSObject> receiver, Handle<JSGlobalObject> holder, |
| 1601 | Handle<Name> name, Handle<PropertyCell> cell, PropertyCellType type) { |
| 1602 | auto constant_type = Nothing<PropertyCellConstantType>(); |
| 1603 | if (type == PropertyCellType::kConstantType) { |
| 1604 | constant_type = Just(cell->GetConstantType()); |
| 1605 | } |
| 1606 | StoreGlobalStub stub(isolate, type, constant_type, |
| 1607 | receiver->IsJSGlobalProxy()); |
| 1608 | auto code = stub.GetCodeCopyFromTemplate(holder, cell); |
| 1609 | // TODO(verwaest): Move caching of these NORMAL stubs outside as well. |
| 1610 | HeapObject::UpdateMapCodeCache(receiver, name, code); |
| 1611 | return code; |
| 1612 | } |
| 1613 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1614 | Handle<Code> StoreIC::GetMapIndependentHandler(LookupIterator* lookup) { |
| 1615 | DCHECK_NE(LookupIterator::JSPROXY, lookup->state()); |
| 1616 | |
| 1617 | // This is currently guaranteed by checks in StoreIC::Store. |
| 1618 | Handle<JSObject> receiver = Handle<JSObject>::cast(lookup->GetReceiver()); |
| 1619 | Handle<JSObject> holder = lookup->GetHolder<JSObject>(); |
| 1620 | DCHECK(!receiver->IsAccessCheckNeeded() || lookup->name()->IsPrivate()); |
| 1621 | |
| 1622 | switch (lookup->state()) { |
| 1623 | case LookupIterator::TRANSITION: { |
| 1624 | auto store_target = lookup->GetStoreTarget(); |
| 1625 | if (store_target->IsJSGlobalObject()) { |
| 1626 | break; // Custom-compiled handler. |
| 1627 | } |
| 1628 | // Currently not handled by CompileStoreTransition. |
| 1629 | if (!holder->HasFastProperties()) { |
| 1630 | TRACE_GENERIC_IC(isolate(), "StoreIC", "transition from slow"); |
| 1631 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1632 | return slow_stub(); |
| 1633 | } |
| 1634 | |
| 1635 | DCHECK(lookup->IsCacheableTransition()); |
| 1636 | break; // Custom-compiled handler. |
| 1637 | } |
| 1638 | |
| 1639 | case LookupIterator::INTERCEPTOR: { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1640 | DCHECK(!holder->GetNamedInterceptor()->setter()->IsUndefined(isolate())); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1641 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreInterceptorStub); |
| 1642 | StoreInterceptorStub stub(isolate()); |
| 1643 | return stub.GetCode(); |
| 1644 | } |
| 1645 | |
| 1646 | case LookupIterator::ACCESSOR: { |
| 1647 | if (!holder->HasFastProperties()) { |
| 1648 | TRACE_GENERIC_IC(isolate(), "StoreIC", "accessor on slow map"); |
| 1649 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1650 | return slow_stub(); |
| 1651 | } |
| 1652 | Handle<Object> accessors = lookup->GetAccessors(); |
| 1653 | if (accessors->IsAccessorInfo()) { |
| 1654 | Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(accessors); |
| 1655 | if (v8::ToCData<Address>(info->setter()) == nullptr) { |
| 1656 | TRACE_GENERIC_IC(isolate(), "StoreIC", "setter == nullptr"); |
| 1657 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1658 | return slow_stub(); |
| 1659 | } |
| 1660 | if (AccessorInfo::cast(*accessors)->is_special_data_property() && |
| 1661 | !lookup->HolderIsReceiverOrHiddenPrototype()) { |
| 1662 | TRACE_GENERIC_IC(isolate(), "StoreIC", |
| 1663 | "special data property in prototype chain"); |
| 1664 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1665 | return slow_stub(); |
| 1666 | } |
| 1667 | if (!AccessorInfo::IsCompatibleReceiverMap(isolate(), info, |
| 1668 | receiver_map())) { |
| 1669 | TRACE_GENERIC_IC(isolate(), "StoreIC", "incompatible receiver type"); |
| 1670 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1671 | return slow_stub(); |
| 1672 | } |
| 1673 | if (info->is_sloppy() && !receiver->IsJSReceiver()) { |
| 1674 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1675 | return slow_stub(); |
| 1676 | } |
| 1677 | break; // Custom-compiled handler. |
| 1678 | } else if (accessors->IsAccessorPair()) { |
| 1679 | Handle<Object> setter(Handle<AccessorPair>::cast(accessors)->setter(), |
| 1680 | isolate()); |
| 1681 | if (!setter->IsJSFunction() && !setter->IsFunctionTemplateInfo()) { |
| 1682 | TRACE_GENERIC_IC(isolate(), "StoreIC", "setter not a function"); |
| 1683 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1684 | return slow_stub(); |
| 1685 | } |
| 1686 | CallOptimization call_optimization(setter); |
| 1687 | if (call_optimization.is_simple_api_call()) { |
| 1688 | if (call_optimization.IsCompatibleReceiver(receiver, holder)) { |
| 1689 | break; // Custom-compiled handler. |
| 1690 | } |
| 1691 | TRACE_GENERIC_IC(isolate(), "StoreIC", "incompatible receiver"); |
| 1692 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1693 | return slow_stub(); |
| 1694 | } |
| 1695 | break; // Custom-compiled handler. |
| 1696 | } |
| 1697 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1698 | return slow_stub(); |
| 1699 | } |
| 1700 | |
| 1701 | case LookupIterator::DATA: { |
| 1702 | if (lookup->is_dictionary_holder()) { |
| 1703 | if (holder->IsJSGlobalObject()) { |
| 1704 | break; // Custom-compiled handler. |
| 1705 | } |
| 1706 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreNormal); |
| 1707 | DCHECK(holder.is_identical_to(receiver)); |
| 1708 | return isolate()->builtins()->StoreIC_Normal(); |
| 1709 | } |
| 1710 | |
| 1711 | // -------------- Fields -------------- |
| 1712 | if (lookup->property_details().type() == DATA) { |
| 1713 | bool use_stub = true; |
| 1714 | if (lookup->representation().IsHeapObject()) { |
| 1715 | // Only use a generic stub if no types need to be tracked. |
| 1716 | Handle<FieldType> field_type = lookup->GetFieldType(); |
| 1717 | use_stub = !field_type->IsClass(); |
| 1718 | } |
| 1719 | if (use_stub) { |
| 1720 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreFieldStub); |
| 1721 | StoreFieldStub stub(isolate(), lookup->GetFieldIndex(), |
| 1722 | lookup->representation()); |
| 1723 | return stub.GetCode(); |
| 1724 | } |
| 1725 | break; // Custom-compiled handler. |
| 1726 | } |
| 1727 | |
| 1728 | // -------------- Constant properties -------------- |
| 1729 | DCHECK(lookup->property_details().type() == DATA_CONSTANT); |
| 1730 | TRACE_GENERIC_IC(isolate(), "StoreIC", "constant property"); |
| 1731 | TRACE_HANDLER_STATS(isolate(), StoreIC_SlowStub); |
| 1732 | return slow_stub(); |
| 1733 | } |
| 1734 | |
| 1735 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
| 1736 | case LookupIterator::ACCESS_CHECK: |
| 1737 | case LookupIterator::JSPROXY: |
| 1738 | case LookupIterator::NOT_FOUND: |
| 1739 | UNREACHABLE(); |
| 1740 | } |
| 1741 | return Handle<Code>::null(); |
| 1742 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1743 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1744 | Handle<Code> StoreIC::CompileHandler(LookupIterator* lookup, |
| 1745 | Handle<Object> value, |
| 1746 | CacheHolderFlag cache_holder) { |
| 1747 | DCHECK_NE(LookupIterator::JSPROXY, lookup->state()); |
| 1748 | |
| 1749 | // This is currently guaranteed by checks in StoreIC::Store. |
| 1750 | Handle<JSObject> receiver = Handle<JSObject>::cast(lookup->GetReceiver()); |
| 1751 | Handle<JSObject> holder = lookup->GetHolder<JSObject>(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1752 | DCHECK(!receiver->IsAccessCheckNeeded() || lookup->name()->IsPrivate()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1753 | |
| 1754 | switch (lookup->state()) { |
| 1755 | case LookupIterator::TRANSITION: { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1756 | auto store_target = lookup->GetStoreTarget(); |
| 1757 | if (store_target->IsJSGlobalObject()) { |
| 1758 | // TODO(dcarney): this currently just deopts. Use the transition cell. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1759 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreGlobalTransition); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1760 | auto cell = isolate()->factory()->NewPropertyCell(); |
| 1761 | cell->set_value(*value); |
| 1762 | auto code = PropertyCellStoreHandler( |
| 1763 | isolate(), store_target, Handle<JSGlobalObject>::cast(store_target), |
| 1764 | lookup->name(), cell, PropertyCellType::kConstant); |
| 1765 | cell->set_value(isolate()->heap()->the_hole_value()); |
| 1766 | return code; |
| 1767 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1768 | Handle<Map> transition = lookup->transition_map(); |
| 1769 | // Currently not handled by CompileStoreTransition. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1770 | DCHECK(holder->HasFastProperties()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1771 | |
| 1772 | DCHECK(lookup->IsCacheableTransition()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1773 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreTransition); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1774 | NamedStoreHandlerCompiler compiler(isolate(), receiver_map(), holder); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1775 | return compiler.CompileStoreTransition(transition, lookup->name()); |
| 1776 | } |
| 1777 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1778 | case LookupIterator::INTERCEPTOR: |
| 1779 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1780 | |
| 1781 | case LookupIterator::ACCESSOR: { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1782 | DCHECK(holder->HasFastProperties()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1783 | Handle<Object> accessors = lookup->GetAccessors(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1784 | if (accessors->IsAccessorInfo()) { |
| 1785 | Handle<AccessorInfo> info = Handle<AccessorInfo>::cast(accessors); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1786 | DCHECK(v8::ToCData<Address>(info->setter()) != 0); |
| 1787 | DCHECK(!AccessorInfo::cast(*accessors)->is_special_data_property() || |
| 1788 | lookup->HolderIsReceiverOrHiddenPrototype()); |
| 1789 | DCHECK(AccessorInfo::IsCompatibleReceiverMap(isolate(), info, |
| 1790 | receiver_map())); |
| 1791 | DCHECK(!info->is_sloppy() || receiver->IsJSReceiver()); |
| 1792 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreCallback); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1793 | NamedStoreHandlerCompiler compiler(isolate(), receiver_map(), holder); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1794 | Handle<Code> code = compiler.CompileStoreCallback( |
| 1795 | receiver, lookup->name(), info, language_mode()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1796 | return code; |
| 1797 | } else { |
| 1798 | DCHECK(accessors->IsAccessorPair()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1799 | Handle<Object> setter(Handle<AccessorPair>::cast(accessors)->setter(), |
| 1800 | isolate()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1801 | DCHECK(setter->IsJSFunction() || setter->IsFunctionTemplateInfo()); |
| 1802 | CallOptimization call_optimization(setter); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1803 | NamedStoreHandlerCompiler compiler(isolate(), receiver_map(), holder); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1804 | if (call_optimization.is_simple_api_call()) { |
| 1805 | DCHECK(call_optimization.IsCompatibleReceiver(receiver, holder)); |
| 1806 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreCallback); |
| 1807 | Handle<Code> code = compiler.CompileStoreCallback( |
| 1808 | receiver, lookup->name(), call_optimization, |
| 1809 | lookup->GetAccessorIndex()); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1810 | return code; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1811 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1812 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreViaSetter); |
| 1813 | int expected_arguments = JSFunction::cast(*setter) |
| 1814 | ->shared() |
| 1815 | ->internal_formal_parameter_count(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1816 | return compiler.CompileStoreViaSetter(receiver, lookup->name(), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1817 | lookup->GetAccessorIndex(), |
| 1818 | expected_arguments); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1819 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1820 | } |
| 1821 | |
| 1822 | case LookupIterator::DATA: { |
| 1823 | if (lookup->is_dictionary_holder()) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1824 | DCHECK(holder->IsJSGlobalObject()); |
| 1825 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreGlobal); |
| 1826 | DCHECK(holder.is_identical_to(receiver) || |
| 1827 | receiver->map()->prototype() == *holder); |
| 1828 | auto cell = lookup->GetPropertyCell(); |
| 1829 | auto updated_type = |
| 1830 | PropertyCell::UpdatedType(cell, value, lookup->property_details()); |
| 1831 | auto code = PropertyCellStoreHandler( |
| 1832 | isolate(), receiver, Handle<JSGlobalObject>::cast(holder), |
| 1833 | lookup->name(), cell, updated_type); |
| 1834 | return code; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1835 | } |
| 1836 | |
| 1837 | // -------------- Fields -------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1838 | if (lookup->property_details().type() == DATA) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1839 | #ifdef DEBUG |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1840 | bool use_stub = true; |
| 1841 | if (lookup->representation().IsHeapObject()) { |
| 1842 | // Only use a generic stub if no types need to be tracked. |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1843 | Handle<FieldType> field_type = lookup->GetFieldType(); |
| 1844 | use_stub = !field_type->IsClass(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1845 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1846 | DCHECK(!use_stub); |
| 1847 | #endif |
| 1848 | TRACE_HANDLER_STATS(isolate(), StoreIC_StoreField); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1849 | NamedStoreHandlerCompiler compiler(isolate(), receiver_map(), holder); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1850 | return compiler.CompileStoreField(lookup); |
| 1851 | } |
| 1852 | |
| 1853 | // -------------- Constant properties -------------- |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1854 | DCHECK(lookup->property_details().type() == DATA_CONSTANT); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1855 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1856 | } |
| 1857 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1858 | case LookupIterator::INTEGER_INDEXED_EXOTIC: |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1859 | case LookupIterator::ACCESS_CHECK: |
| 1860 | case LookupIterator::JSPROXY: |
| 1861 | case LookupIterator::NOT_FOUND: |
| 1862 | UNREACHABLE(); |
| 1863 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1864 | UNREACHABLE(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1865 | return slow_stub(); |
| 1866 | } |
| 1867 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1868 | void KeyedStoreIC::UpdateStoreElement(Handle<Map> receiver_map, |
| 1869 | KeyedAccessStoreMode store_mode) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1870 | MapHandleList target_receiver_maps; |
| 1871 | TargetMaps(&target_receiver_maps); |
| 1872 | if (target_receiver_maps.length() == 0) { |
| 1873 | Handle<Map> monomorphic_map = |
| 1874 | ComputeTransitionedMap(receiver_map, store_mode); |
| 1875 | store_mode = GetNonTransitioningStoreMode(store_mode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1876 | Handle<Code> handler = |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1877 | PropertyICCompiler::ComputeKeyedStoreMonomorphicHandler(monomorphic_map, |
| 1878 | store_mode); |
| 1879 | return ConfigureVectorState(Handle<Name>(), monomorphic_map, handler); |
| 1880 | } |
| 1881 | |
| 1882 | for (int i = 0; i < target_receiver_maps.length(); i++) { |
| 1883 | if (!target_receiver_maps.at(i).is_null() && |
| 1884 | target_receiver_maps.at(i)->instance_type() == JS_VALUE_TYPE) { |
| 1885 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "JSValue"); |
| 1886 | return; |
| 1887 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1888 | } |
| 1889 | |
| 1890 | // There are several special cases where an IC that is MONOMORPHIC can still |
| 1891 | // transition to a different GetNonTransitioningStoreMode IC that handles a |
| 1892 | // superset of the original IC. Handle those here if the receiver map hasn't |
| 1893 | // changed or it has transitioned to a more general kind. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1894 | KeyedAccessStoreMode old_store_mode = GetKeyedAccessStoreMode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1895 | Handle<Map> previous_receiver_map = target_receiver_maps.at(0); |
| 1896 | if (state() == MONOMORPHIC) { |
| 1897 | Handle<Map> transitioned_receiver_map = receiver_map; |
| 1898 | if (IsTransitionStoreMode(store_mode)) { |
| 1899 | transitioned_receiver_map = |
| 1900 | ComputeTransitionedMap(receiver_map, store_mode); |
| 1901 | } |
| 1902 | if ((receiver_map.is_identical_to(previous_receiver_map) && |
| 1903 | IsTransitionStoreMode(store_mode)) || |
| 1904 | IsTransitionOfMonomorphicTarget(*previous_receiver_map, |
| 1905 | *transitioned_receiver_map)) { |
| 1906 | // If the "old" and "new" maps are in the same elements map family, or |
| 1907 | // if they at least come from the same origin for a transitioning store, |
| 1908 | // stay MONOMORPHIC and use the map for the most generic ElementsKind. |
| 1909 | store_mode = GetNonTransitioningStoreMode(store_mode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1910 | Handle<Code> handler = |
| 1911 | PropertyICCompiler::ComputeKeyedStoreMonomorphicHandler( |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1912 | transitioned_receiver_map, store_mode); |
| 1913 | ConfigureVectorState(Handle<Name>(), transitioned_receiver_map, handler); |
| 1914 | return; |
| 1915 | } |
| 1916 | if (receiver_map.is_identical_to(previous_receiver_map) && |
| 1917 | old_store_mode == STANDARD_STORE && |
| 1918 | (store_mode == STORE_AND_GROW_NO_TRANSITION || |
| 1919 | store_mode == STORE_NO_TRANSITION_IGNORE_OUT_OF_BOUNDS || |
| 1920 | store_mode == STORE_NO_TRANSITION_HANDLE_COW)) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1921 | // A "normal" IC that handles stores can switch to a version that can |
| 1922 | // grow at the end of the array, handle OOB accesses or copy COW arrays |
| 1923 | // and still stay MONOMORPHIC. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1924 | Handle<Code> handler = |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1925 | PropertyICCompiler::ComputeKeyedStoreMonomorphicHandler(receiver_map, |
| 1926 | store_mode); |
| 1927 | return ConfigureVectorState(Handle<Name>(), receiver_map, handler); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1928 | } |
| 1929 | } |
| 1930 | |
| 1931 | DCHECK(state() != GENERIC); |
| 1932 | |
| 1933 | bool map_added = |
| 1934 | AddOneReceiverMapIfMissing(&target_receiver_maps, receiver_map); |
| 1935 | |
| 1936 | if (IsTransitionStoreMode(store_mode)) { |
| 1937 | Handle<Map> transitioned_receiver_map = |
| 1938 | ComputeTransitionedMap(receiver_map, store_mode); |
| 1939 | map_added |= AddOneReceiverMapIfMissing(&target_receiver_maps, |
| 1940 | transitioned_receiver_map); |
| 1941 | } |
| 1942 | |
| 1943 | if (!map_added) { |
| 1944 | // If the miss wasn't due to an unseen map, a polymorphic stub |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1945 | // won't help, use the megamorphic stub which can handle everything. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1946 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "same map added twice"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1947 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1948 | } |
| 1949 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 1950 | // If the maximum number of receiver maps has been exceeded, use the |
| 1951 | // megamorphic version of the IC. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1952 | if (target_receiver_maps.length() > kMaxKeyedPolymorphism) return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1953 | |
| 1954 | // Make sure all polymorphic handlers have the same store mode, otherwise the |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1955 | // megamorphic stub must be used. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1956 | store_mode = GetNonTransitioningStoreMode(store_mode); |
| 1957 | if (old_store_mode != STANDARD_STORE) { |
| 1958 | if (store_mode == STANDARD_STORE) { |
| 1959 | store_mode = old_store_mode; |
| 1960 | } else if (store_mode != old_store_mode) { |
| 1961 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "store mode mismatch"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1962 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1963 | } |
| 1964 | } |
| 1965 | |
| 1966 | // If the store mode isn't the standard mode, make sure that all polymorphic |
| 1967 | // receivers are either external arrays, or all "normal" arrays. Otherwise, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1968 | // use the megamorphic stub. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1969 | if (store_mode != STANDARD_STORE) { |
| 1970 | int external_arrays = 0; |
| 1971 | for (int i = 0; i < target_receiver_maps.length(); ++i) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1972 | if (target_receiver_maps[i]->has_fixed_typed_array_elements()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1973 | external_arrays++; |
| 1974 | } |
| 1975 | } |
| 1976 | if (external_arrays != 0 && |
| 1977 | external_arrays != target_receiver_maps.length()) { |
| 1978 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", |
| 1979 | "unsupported combination of external and normal arrays"); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1980 | return; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1981 | } |
| 1982 | } |
| 1983 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1984 | TRACE_HANDLER_STATS(isolate(), KeyedStoreIC_Polymorphic); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1985 | MapHandleList transitioned_maps(target_receiver_maps.length()); |
| 1986 | CodeHandleList handlers(target_receiver_maps.length()); |
| 1987 | PropertyICCompiler::ComputeKeyedStorePolymorphicHandlers( |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 1988 | &target_receiver_maps, &transitioned_maps, &handlers, store_mode); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1989 | ConfigureVectorState(&target_receiver_maps, &transitioned_maps, &handlers); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1990 | } |
| 1991 | |
| 1992 | |
| 1993 | Handle<Map> KeyedStoreIC::ComputeTransitionedMap( |
| 1994 | Handle<Map> map, KeyedAccessStoreMode store_mode) { |
| 1995 | switch (store_mode) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1996 | case STORE_TRANSITION_TO_OBJECT: |
| 1997 | case STORE_AND_GROW_TRANSITION_TO_OBJECT: { |
| 1998 | ElementsKind kind = IsFastHoleyElementsKind(map->elements_kind()) |
| 1999 | ? FAST_HOLEY_ELEMENTS |
| 2000 | : FAST_ELEMENTS; |
| 2001 | return Map::TransitionElementsTo(map, kind); |
| 2002 | } |
| 2003 | case STORE_TRANSITION_TO_DOUBLE: |
| 2004 | case STORE_AND_GROW_TRANSITION_TO_DOUBLE: { |
| 2005 | ElementsKind kind = IsFastHoleyElementsKind(map->elements_kind()) |
| 2006 | ? FAST_HOLEY_DOUBLE_ELEMENTS |
| 2007 | : FAST_DOUBLE_ELEMENTS; |
| 2008 | return Map::TransitionElementsTo(map, kind); |
| 2009 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2010 | case STORE_NO_TRANSITION_IGNORE_OUT_OF_BOUNDS: |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2011 | DCHECK(map->has_fixed_typed_array_elements()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2012 | // Fall through |
| 2013 | case STORE_NO_TRANSITION_HANDLE_COW: |
| 2014 | case STANDARD_STORE: |
| 2015 | case STORE_AND_GROW_NO_TRANSITION: |
| 2016 | return map; |
| 2017 | } |
| 2018 | UNREACHABLE(); |
| 2019 | return MaybeHandle<Map>().ToHandleChecked(); |
| 2020 | } |
| 2021 | |
| 2022 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2023 | bool IsOutOfBoundsAccess(Handle<JSObject> receiver, uint32_t index) { |
| 2024 | uint32_t length = 0; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2025 | if (receiver->IsJSArray()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2026 | JSArray::cast(*receiver)->length()->ToArrayLength(&length); |
| 2027 | } else { |
| 2028 | length = static_cast<uint32_t>(receiver->elements()->length()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2029 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2030 | return index >= length; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2031 | } |
| 2032 | |
| 2033 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2034 | static KeyedAccessStoreMode GetStoreMode(Handle<JSObject> receiver, |
| 2035 | uint32_t index, Handle<Object> value) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2036 | bool oob_access = IsOutOfBoundsAccess(receiver, index); |
| 2037 | // Don't consider this a growing store if the store would send the receiver to |
| 2038 | // dictionary mode. |
| 2039 | bool allow_growth = receiver->IsJSArray() && oob_access && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2040 | !receiver->WouldConvertToSlowElements(index); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2041 | if (allow_growth) { |
| 2042 | // Handle growing array in stub if necessary. |
| 2043 | if (receiver->HasFastSmiElements()) { |
| 2044 | if (value->IsHeapNumber()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2045 | return STORE_AND_GROW_TRANSITION_TO_DOUBLE; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2046 | } |
| 2047 | if (value->IsHeapObject()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2048 | return STORE_AND_GROW_TRANSITION_TO_OBJECT; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2049 | } |
| 2050 | } else if (receiver->HasFastDoubleElements()) { |
| 2051 | if (!value->IsSmi() && !value->IsHeapNumber()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2052 | return STORE_AND_GROW_TRANSITION_TO_OBJECT; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2053 | } |
| 2054 | } |
| 2055 | return STORE_AND_GROW_NO_TRANSITION; |
| 2056 | } else { |
| 2057 | // Handle only in-bounds elements accesses. |
| 2058 | if (receiver->HasFastSmiElements()) { |
| 2059 | if (value->IsHeapNumber()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2060 | return STORE_TRANSITION_TO_DOUBLE; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2061 | } else if (value->IsHeapObject()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2062 | return STORE_TRANSITION_TO_OBJECT; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2063 | } |
| 2064 | } else if (receiver->HasFastDoubleElements()) { |
| 2065 | if (!value->IsSmi() && !value->IsHeapNumber()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2066 | return STORE_TRANSITION_TO_OBJECT; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2067 | } |
| 2068 | } |
| 2069 | if (!FLAG_trace_external_array_abuse && |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2070 | receiver->map()->has_fixed_typed_array_elements() && oob_access) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2071 | return STORE_NO_TRANSITION_IGNORE_OUT_OF_BOUNDS; |
| 2072 | } |
| 2073 | Heap* heap = receiver->GetHeap(); |
| 2074 | if (receiver->elements()->map() == heap->fixed_cow_array_map()) { |
| 2075 | return STORE_NO_TRANSITION_HANDLE_COW; |
| 2076 | } else { |
| 2077 | return STANDARD_STORE; |
| 2078 | } |
| 2079 | } |
| 2080 | } |
| 2081 | |
| 2082 | |
| 2083 | MaybeHandle<Object> KeyedStoreIC::Store(Handle<Object> object, |
| 2084 | Handle<Object> key, |
| 2085 | Handle<Object> value) { |
| 2086 | // TODO(verwaest): Let SetProperty do the migration, since storing a property |
| 2087 | // might deprecate the current map again, if value does not fit. |
| 2088 | if (MigrateDeprecated(object)) { |
| 2089 | Handle<Object> result; |
| 2090 | ASSIGN_RETURN_ON_EXCEPTION( |
| 2091 | isolate(), result, Runtime::SetObjectProperty(isolate(), object, key, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2092 | value, language_mode()), |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2093 | Object); |
| 2094 | return result; |
| 2095 | } |
| 2096 | |
| 2097 | // Check for non-string values that can be converted into an |
| 2098 | // internalized string directly or is representable as a smi. |
| 2099 | key = TryConvertKey(key, isolate()); |
| 2100 | |
| 2101 | Handle<Object> store_handle; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2102 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2103 | uint32_t index; |
| 2104 | if ((key->IsInternalizedString() && |
| 2105 | !String::cast(*key)->AsArrayIndex(&index)) || |
| 2106 | key->IsSymbol()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2107 | ASSIGN_RETURN_ON_EXCEPTION( |
| 2108 | isolate(), store_handle, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2109 | StoreIC::Store(object, Handle<Name>::cast(key), value, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2110 | JSReceiver::MAY_BE_STORE_FROM_KEYED), |
| 2111 | Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2112 | if (!is_vector_set()) { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2113 | ConfigureVectorState(MEGAMORPHIC, key); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2114 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", |
| 2115 | "unhandled internalized string key"); |
| 2116 | TRACE_IC("StoreIC", key); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2117 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2118 | return store_handle; |
| 2119 | } |
| 2120 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2121 | bool use_ic = FLAG_use_ic && !object->IsStringWrapper() && |
| 2122 | !object->IsAccessCheckNeeded() && !object->IsJSGlobalProxy(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2123 | if (use_ic && !object->IsSmi()) { |
| 2124 | // Don't use ICs for maps of the objects in Array's prototype chain. We |
| 2125 | // expect to be able to trap element sets to objects with those maps in |
| 2126 | // the runtime to enable optimization of element hole access. |
| 2127 | Handle<HeapObject> heap_object = Handle<HeapObject>::cast(object); |
| 2128 | if (heap_object->map()->IsMapInArrayPrototypeChain()) { |
| 2129 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "map in array prototype"); |
| 2130 | use_ic = false; |
| 2131 | } |
| 2132 | } |
| 2133 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2134 | Handle<Map> old_receiver_map; |
| 2135 | bool sloppy_arguments_elements = false; |
| 2136 | bool key_is_valid_index = false; |
| 2137 | KeyedAccessStoreMode store_mode = STANDARD_STORE; |
| 2138 | if (use_ic && object->IsJSObject()) { |
| 2139 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 2140 | old_receiver_map = handle(receiver->map(), isolate()); |
| 2141 | sloppy_arguments_elements = |
| 2142 | !is_sloppy(language_mode()) && |
| 2143 | receiver->elements()->map() == |
| 2144 | isolate()->heap()->sloppy_arguments_elements_map(); |
| 2145 | if (!sloppy_arguments_elements) { |
| 2146 | key_is_valid_index = key->IsSmi() && Smi::cast(*key)->value() >= 0; |
| 2147 | if (key_is_valid_index) { |
| 2148 | uint32_t index = static_cast<uint32_t>(Smi::cast(*key)->value()); |
| 2149 | store_mode = GetStoreMode(receiver, index, value); |
| 2150 | } |
| 2151 | } |
| 2152 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2153 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2154 | DCHECK(store_handle.is_null()); |
| 2155 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), store_handle, |
| 2156 | Runtime::SetObjectProperty(isolate(), object, key, |
| 2157 | value, language_mode()), |
| 2158 | Object); |
| 2159 | |
| 2160 | if (use_ic) { |
| 2161 | if (!old_receiver_map.is_null()) { |
| 2162 | if (sloppy_arguments_elements) { |
| 2163 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "arguments receiver"); |
| 2164 | } else if (key_is_valid_index) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2165 | // We should go generic if receiver isn't a dictionary, but our |
| 2166 | // prototype chain does have dictionary elements. This ensures that |
| 2167 | // other non-dictionary receivers in the polymorphic case benefit |
| 2168 | // from fast path keyed stores. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2169 | if (!old_receiver_map->DictionaryElementsInPrototypeChainOnly()) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2170 | UpdateStoreElement(old_receiver_map, store_mode); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2171 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2172 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", |
| 2173 | "dictionary or proxy prototype"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2174 | } |
| 2175 | } else { |
| 2176 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "non-smi-like key"); |
| 2177 | } |
| 2178 | } else { |
| 2179 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "non-JSObject receiver"); |
| 2180 | } |
| 2181 | } |
| 2182 | |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2183 | if (!is_vector_set()) { |
| 2184 | ConfigureVectorState(MEGAMORPHIC, key); |
| 2185 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "set generic"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2186 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2187 | TRACE_IC("StoreIC", key); |
| 2188 | |
| 2189 | return store_handle; |
| 2190 | } |
| 2191 | |
| 2192 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2193 | void CallIC::HandleMiss(Handle<Object> function) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2194 | Handle<Object> name = isolate()->factory()->empty_string(); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2195 | CallICNexus* nexus = casted_nexus<CallICNexus>(); |
| 2196 | Object* feedback = nexus->GetFeedback(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2197 | |
| 2198 | // Hand-coded MISS handling is easier if CallIC slots don't contain smis. |
| 2199 | DCHECK(!feedback->IsSmi()); |
| 2200 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2201 | if (feedback->IsWeakCell() || !function->IsJSFunction() || |
| 2202 | feedback->IsAllocationSite()) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2203 | // We are going generic. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2204 | nexus->ConfigureMegamorphic(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2205 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2206 | DCHECK(feedback == *TypeFeedbackVector::UninitializedSentinel(isolate())); |
| 2207 | Handle<JSFunction> js_function = Handle<JSFunction>::cast(function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2208 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2209 | Handle<JSFunction> array_function = |
| 2210 | Handle<JSFunction>(isolate()->native_context()->array_function()); |
| 2211 | if (array_function.is_identical_to(js_function)) { |
| 2212 | // Alter the slot. |
| 2213 | nexus->ConfigureMonomorphicArray(); |
| 2214 | } else if (js_function->context()->native_context() != |
| 2215 | *isolate()->native_context()) { |
| 2216 | // Don't collect cross-native context feedback for the CallIC. |
| 2217 | // TODO(bmeurer): We should collect the SharedFunctionInfo as |
| 2218 | // feedback in this case instead. |
| 2219 | nexus->ConfigureMegamorphic(); |
| 2220 | } else { |
| 2221 | nexus->ConfigureMonomorphic(js_function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2222 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2223 | } |
| 2224 | |
| 2225 | if (function->IsJSFunction()) { |
| 2226 | Handle<JSFunction> js_function = Handle<JSFunction>::cast(function); |
| 2227 | name = handle(js_function->shared()->name(), isolate()); |
| 2228 | } |
| 2229 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2230 | OnTypeFeedbackChanged(isolate(), get_host()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2231 | TRACE_IC("CallIC", name); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2232 | } |
| 2233 | |
| 2234 | |
| 2235 | #undef TRACE_IC |
| 2236 | |
| 2237 | |
| 2238 | // ---------------------------------------------------------------------------- |
| 2239 | // Static IC stub generators. |
| 2240 | // |
| 2241 | |
| 2242 | // Used from ic-<arch>.cc. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2243 | RUNTIME_FUNCTION(Runtime_CallIC_Miss) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2244 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2245 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2246 | HandleScope scope(isolate); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2247 | DCHECK(args.length() == 3); |
| 2248 | Handle<Object> function = args.at<Object>(0); |
| 2249 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(1); |
| 2250 | Handle<Smi> slot = args.at<Smi>(2); |
| 2251 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2252 | CallICNexus nexus(vector, vector_slot); |
| 2253 | CallIC ic(isolate, &nexus); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2254 | ic.HandleMiss(function); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2255 | return *function; |
| 2256 | } |
| 2257 | |
| 2258 | |
| 2259 | // Used from ic-<arch>.cc. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2260 | RUNTIME_FUNCTION(Runtime_LoadIC_Miss) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2261 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2262 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2263 | HandleScope scope(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2264 | Handle<Object> receiver = args.at<Object>(0); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2265 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2266 | DCHECK_EQ(4, args.length()); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2267 | Handle<Smi> slot = args.at<Smi>(2); |
| 2268 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(3); |
| 2269 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2270 | // A monomorphic or polymorphic KeyedLoadIC with a string key can call the |
| 2271 | // LoadIC miss handler if the handler misses. Since the vector Nexus is |
| 2272 | // set up outside the IC, handle that here. |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2273 | FeedbackVectorSlotKind kind = vector->GetKind(vector_slot); |
| 2274 | if (kind == FeedbackVectorSlotKind::LOAD_IC) { |
| 2275 | Handle<Name> key = args.at<Name>(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2276 | LoadICNexus nexus(vector, vector_slot); |
| 2277 | LoadIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2278 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2279 | RETURN_RESULT_OR_FAILURE(isolate, ic.Load(receiver, key)); |
| 2280 | |
| 2281 | } else if (kind == FeedbackVectorSlotKind::LOAD_GLOBAL_IC) { |
| 2282 | Handle<Name> key(vector->GetName(vector_slot), isolate); |
| 2283 | DCHECK_NE(*key, *isolate->factory()->empty_string()); |
| 2284 | DCHECK_EQ(*isolate->global_object(), *receiver); |
| 2285 | LoadGlobalICNexus nexus(vector, vector_slot); |
| 2286 | LoadGlobalIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2287 | ic.UpdateState(receiver, key); |
| 2288 | RETURN_RESULT_OR_FAILURE(isolate, ic.Load(key)); |
| 2289 | |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2290 | } else { |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2291 | Handle<Name> key = args.at<Name>(1); |
| 2292 | DCHECK_EQ(FeedbackVectorSlotKind::KEYED_LOAD_IC, kind); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2293 | KeyedLoadICNexus nexus(vector, vector_slot); |
| 2294 | KeyedLoadIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2295 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2296 | RETURN_RESULT_OR_FAILURE(isolate, ic.Load(receiver, key)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2297 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2298 | } |
| 2299 | |
| 2300 | // Used from ic-<arch>.cc. |
| 2301 | RUNTIME_FUNCTION(Runtime_LoadGlobalIC_Miss) { |
| 2302 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
| 2303 | HandleScope scope(isolate); |
| 2304 | DCHECK_EQ(2, args.length()); |
| 2305 | Handle<JSGlobalObject> global = isolate->global_object(); |
| 2306 | Handle<Smi> slot = args.at<Smi>(0); |
| 2307 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(1); |
| 2308 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2309 | DCHECK_EQ(FeedbackVectorSlotKind::LOAD_GLOBAL_IC, |
| 2310 | vector->GetKind(vector_slot)); |
| 2311 | Handle<String> name(vector->GetName(vector_slot), isolate); |
| 2312 | DCHECK_NE(*name, *isolate->factory()->empty_string()); |
| 2313 | |
| 2314 | LoadGlobalICNexus nexus(vector, vector_slot); |
| 2315 | LoadGlobalIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2316 | ic.UpdateState(global, name); |
| 2317 | |
| 2318 | Handle<Object> result; |
| 2319 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result, ic.Load(name)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2320 | return *result; |
| 2321 | } |
| 2322 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2323 | RUNTIME_FUNCTION(Runtime_LoadGlobalIC_Slow) { |
| 2324 | HandleScope scope(isolate); |
| 2325 | DCHECK_EQ(2, args.length()); |
| 2326 | CONVERT_SMI_ARG_CHECKED(slot, 0); |
| 2327 | CONVERT_ARG_HANDLE_CHECKED(TypeFeedbackVector, vector, 1); |
| 2328 | |
| 2329 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot); |
| 2330 | DCHECK_EQ(FeedbackVectorSlotKind::LOAD_GLOBAL_IC, |
| 2331 | vector->GetKind(vector_slot)); |
| 2332 | Handle<String> name(vector->GetName(vector_slot), isolate); |
| 2333 | DCHECK_NE(*name, *isolate->factory()->empty_string()); |
| 2334 | |
| 2335 | Handle<JSGlobalObject> global = isolate->global_object(); |
| 2336 | |
| 2337 | Handle<ScriptContextTable> script_contexts( |
| 2338 | global->native_context()->script_context_table()); |
| 2339 | |
| 2340 | ScriptContextTable::LookupResult lookup_result; |
| 2341 | if (ScriptContextTable::Lookup(script_contexts, name, &lookup_result)) { |
| 2342 | Handle<Context> script_context = ScriptContextTable::GetContext( |
| 2343 | script_contexts, lookup_result.context_index); |
| 2344 | Handle<Object> result = |
| 2345 | FixedArray::get(*script_context, lookup_result.slot_index, isolate); |
| 2346 | if (*result == *isolate->factory()->the_hole_value()) { |
| 2347 | THROW_NEW_ERROR_RETURN_FAILURE( |
| 2348 | isolate, NewReferenceError(MessageTemplate::kNotDefined, name)); |
| 2349 | } |
| 2350 | return *result; |
| 2351 | } |
| 2352 | |
| 2353 | Handle<Object> result; |
| 2354 | bool is_found = false; |
| 2355 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| 2356 | isolate, result, |
| 2357 | Runtime::GetObjectProperty(isolate, global, name, &is_found)); |
| 2358 | if (!is_found) { |
| 2359 | LoadICNexus nexus(isolate); |
| 2360 | LoadIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2361 | // It is actually a LoadGlobalICs here but the predicate handles this case |
| 2362 | // properly. |
| 2363 | if (ic.ShouldThrowReferenceError()) { |
| 2364 | THROW_NEW_ERROR_RETURN_FAILURE( |
| 2365 | isolate, NewReferenceError(MessageTemplate::kNotDefined, name)); |
| 2366 | } |
| 2367 | } |
| 2368 | return *result; |
| 2369 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2370 | |
| 2371 | // Used from ic-<arch>.cc |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2372 | RUNTIME_FUNCTION(Runtime_KeyedLoadIC_Miss) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2373 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2374 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2375 | HandleScope scope(isolate); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2376 | Handle<Object> receiver = args.at<Object>(0); |
| 2377 | Handle<Object> key = args.at<Object>(1); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2378 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2379 | DCHECK(args.length() == 4); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2380 | Handle<Smi> slot = args.at<Smi>(2); |
| 2381 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(3); |
| 2382 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2383 | KeyedLoadICNexus nexus(vector, vector_slot); |
| 2384 | KeyedLoadIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2385 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2386 | RETURN_RESULT_OR_FAILURE(isolate, ic.Load(receiver, key)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2387 | } |
| 2388 | |
| 2389 | |
| 2390 | RUNTIME_FUNCTION(Runtime_KeyedLoadIC_MissFromStubFailure) { |
| 2391 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2392 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2393 | HandleScope scope(isolate); |
| 2394 | Handle<Object> receiver = args.at<Object>(0); |
| 2395 | Handle<Object> key = args.at<Object>(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2396 | |
| 2397 | DCHECK(args.length() == 4); |
| 2398 | Handle<Smi> slot = args.at<Smi>(2); |
| 2399 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(3); |
| 2400 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2401 | KeyedLoadICNexus nexus(vector, vector_slot); |
| 2402 | KeyedLoadIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus); |
| 2403 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2404 | RETURN_RESULT_OR_FAILURE(isolate, ic.Load(receiver, key)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2405 | } |
| 2406 | |
| 2407 | |
| 2408 | // Used from ic-<arch>.cc. |
| 2409 | RUNTIME_FUNCTION(Runtime_StoreIC_Miss) { |
| 2410 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2411 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2412 | HandleScope scope(isolate); |
| 2413 | Handle<Object> receiver = args.at<Object>(0); |
| 2414 | Handle<Name> key = args.at<Name>(1); |
| 2415 | Handle<Object> value = args.at<Object>(2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2416 | |
| 2417 | DCHECK(args.length() == 5 || args.length() == 6); |
| 2418 | Handle<Smi> slot = args.at<Smi>(3); |
| 2419 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(4); |
| 2420 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2421 | if (vector->GetKind(vector_slot) == FeedbackVectorSlotKind::STORE_IC) { |
| 2422 | StoreICNexus nexus(vector, vector_slot); |
| 2423 | StoreIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2424 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2425 | RETURN_RESULT_OR_FAILURE(isolate, ic.Store(receiver, key, value)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2426 | } else { |
| 2427 | DCHECK_EQ(FeedbackVectorSlotKind::KEYED_STORE_IC, |
| 2428 | vector->GetKind(vector_slot)); |
| 2429 | KeyedStoreICNexus nexus(vector, vector_slot); |
| 2430 | KeyedStoreIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2431 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2432 | RETURN_RESULT_OR_FAILURE(isolate, ic.Store(receiver, key, value)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2433 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2434 | } |
| 2435 | |
| 2436 | |
| 2437 | RUNTIME_FUNCTION(Runtime_StoreIC_MissFromStubFailure) { |
| 2438 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2439 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2440 | HandleScope scope(isolate); |
| 2441 | Handle<Object> receiver = args.at<Object>(0); |
| 2442 | Handle<Name> key = args.at<Name>(1); |
| 2443 | Handle<Object> value = args.at<Object>(2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2444 | |
| 2445 | int length = args.length(); |
| 2446 | DCHECK(length == 5 || length == 6); |
| 2447 | // We might have slot and vector, for a normal miss (slot(3), vector(4)). |
| 2448 | // Or, map and vector for a transitioning store miss (map(3), vector(4)). |
| 2449 | // In this case, we need to recover the slot from a virtual register. |
| 2450 | // If length == 6, then a map is included (map(3), slot(4), vector(5)). |
| 2451 | Handle<Smi> slot; |
| 2452 | Handle<TypeFeedbackVector> vector; |
| 2453 | if (length == 5) { |
| 2454 | if (args.at<Object>(3)->IsMap()) { |
| 2455 | vector = args.at<TypeFeedbackVector>(4); |
| 2456 | slot = handle( |
| 2457 | *reinterpret_cast<Smi**>(isolate->virtual_slot_register_address()), |
| 2458 | isolate); |
| 2459 | } else { |
| 2460 | vector = args.at<TypeFeedbackVector>(4); |
| 2461 | slot = args.at<Smi>(3); |
| 2462 | } |
| 2463 | } else { |
| 2464 | vector = args.at<TypeFeedbackVector>(5); |
| 2465 | slot = args.at<Smi>(4); |
| 2466 | } |
| 2467 | |
| 2468 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2469 | if (vector->GetKind(vector_slot) == FeedbackVectorSlotKind::STORE_IC) { |
| 2470 | StoreICNexus nexus(vector, vector_slot); |
| 2471 | StoreIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus); |
| 2472 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2473 | RETURN_RESULT_OR_FAILURE(isolate, ic.Store(receiver, key, value)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2474 | } else { |
| 2475 | DCHECK_EQ(FeedbackVectorSlotKind::KEYED_STORE_IC, |
| 2476 | vector->GetKind(vector_slot)); |
| 2477 | KeyedStoreICNexus nexus(vector, vector_slot); |
| 2478 | KeyedStoreIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus); |
| 2479 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2480 | RETURN_RESULT_OR_FAILURE(isolate, ic.Store(receiver, key, value)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2481 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2482 | } |
| 2483 | |
| 2484 | |
| 2485 | // Used from ic-<arch>.cc. |
| 2486 | RUNTIME_FUNCTION(Runtime_KeyedStoreIC_Miss) { |
| 2487 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2488 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2489 | HandleScope scope(isolate); |
| 2490 | Handle<Object> receiver = args.at<Object>(0); |
| 2491 | Handle<Object> key = args.at<Object>(1); |
| 2492 | Handle<Object> value = args.at<Object>(2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2493 | |
| 2494 | DCHECK(args.length() == 5); |
| 2495 | Handle<Smi> slot = args.at<Smi>(3); |
| 2496 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(4); |
| 2497 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2498 | KeyedStoreICNexus nexus(vector, vector_slot); |
| 2499 | KeyedStoreIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2500 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2501 | RETURN_RESULT_OR_FAILURE(isolate, ic.Store(receiver, key, value)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2502 | } |
| 2503 | |
| 2504 | |
| 2505 | RUNTIME_FUNCTION(Runtime_KeyedStoreIC_MissFromStubFailure) { |
| 2506 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2507 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2508 | HandleScope scope(isolate); |
| 2509 | Handle<Object> receiver = args.at<Object>(0); |
| 2510 | Handle<Object> key = args.at<Object>(1); |
| 2511 | Handle<Object> value = args.at<Object>(2); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2512 | |
| 2513 | DCHECK(args.length() == 5); |
| 2514 | Handle<Smi> slot = args.at<Smi>(3); |
| 2515 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(4); |
| 2516 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 2517 | KeyedStoreICNexus nexus(vector, vector_slot); |
| 2518 | KeyedStoreIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus); |
| 2519 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2520 | RETURN_RESULT_OR_FAILURE(isolate, ic.Store(receiver, key, value)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2521 | } |
| 2522 | |
| 2523 | |
| 2524 | RUNTIME_FUNCTION(Runtime_StoreIC_Slow) { |
| 2525 | HandleScope scope(isolate); |
| 2526 | DCHECK(args.length() == 5); |
| 2527 | Handle<Object> object = args.at<Object>(0); |
| 2528 | Handle<Object> key = args.at<Object>(1); |
| 2529 | Handle<Object> value = args.at<Object>(2); |
| 2530 | LanguageMode language_mode; |
| 2531 | StoreICNexus nexus(isolate); |
| 2532 | StoreIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2533 | language_mode = ic.language_mode(); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2534 | RETURN_RESULT_OR_FAILURE( |
| 2535 | isolate, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2536 | Runtime::SetObjectProperty(isolate, object, key, value, language_mode)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2537 | } |
| 2538 | |
| 2539 | |
| 2540 | RUNTIME_FUNCTION(Runtime_KeyedStoreIC_Slow) { |
| 2541 | HandleScope scope(isolate); |
| 2542 | DCHECK(args.length() == 5); |
| 2543 | Handle<Object> object = args.at<Object>(0); |
| 2544 | Handle<Object> key = args.at<Object>(1); |
| 2545 | Handle<Object> value = args.at<Object>(2); |
| 2546 | LanguageMode language_mode; |
| 2547 | KeyedStoreICNexus nexus(isolate); |
| 2548 | KeyedStoreIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
| 2549 | language_mode = ic.language_mode(); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2550 | RETURN_RESULT_OR_FAILURE( |
| 2551 | isolate, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2552 | Runtime::SetObjectProperty(isolate, object, key, value, language_mode)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2553 | } |
| 2554 | |
| 2555 | |
| 2556 | RUNTIME_FUNCTION(Runtime_ElementsTransitionAndStoreIC_Miss) { |
| 2557 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2558 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2559 | HandleScope scope(isolate); |
| 2560 | // Length == 5 or 6, depending on whether the vector slot |
| 2561 | // is passed in a virtual register or not. |
| 2562 | DCHECK(args.length() == 5 || args.length() == 6); |
| 2563 | Handle<Object> object = args.at<Object>(0); |
| 2564 | Handle<Object> key = args.at<Object>(1); |
| 2565 | Handle<Object> value = args.at<Object>(2); |
| 2566 | Handle<Map> map = args.at<Map>(3); |
| 2567 | LanguageMode language_mode; |
| 2568 | KeyedStoreICNexus nexus(isolate); |
| 2569 | KeyedStoreIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus); |
| 2570 | language_mode = ic.language_mode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2571 | if (object->IsJSObject()) { |
| 2572 | JSObject::TransitionElementsKind(Handle<JSObject>::cast(object), |
| 2573 | map->elements_kind()); |
| 2574 | } |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2575 | RETURN_RESULT_OR_FAILURE( |
| 2576 | isolate, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2577 | Runtime::SetObjectProperty(isolate, object, key, value, language_mode)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2578 | } |
| 2579 | |
| 2580 | |
| 2581 | MaybeHandle<Object> BinaryOpIC::Transition( |
| 2582 | Handle<AllocationSite> allocation_site, Handle<Object> left, |
| 2583 | Handle<Object> right) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2584 | BinaryOpICState state(isolate(), extra_ic_state()); |
| 2585 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2586 | // Compute the actual result using the builtin for the binary operation. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2587 | Handle<Object> result; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2588 | switch (state.op()) { |
| 2589 | default: |
| 2590 | UNREACHABLE(); |
| 2591 | case Token::ADD: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2592 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), result, |
| 2593 | Object::Add(isolate(), left, right), Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2594 | break; |
| 2595 | case Token::SUB: |
| 2596 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2597 | isolate(), result, Object::Subtract(isolate(), left, right), Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2598 | break; |
| 2599 | case Token::MUL: |
| 2600 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2601 | isolate(), result, Object::Multiply(isolate(), left, right), Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2602 | break; |
| 2603 | case Token::DIV: |
| 2604 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2605 | isolate(), result, Object::Divide(isolate(), left, right), Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2606 | break; |
| 2607 | case Token::MOD: |
| 2608 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2609 | isolate(), result, Object::Modulus(isolate(), left, right), Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2610 | break; |
| 2611 | case Token::BIT_OR: |
| 2612 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2613 | isolate(), result, Object::BitwiseOr(isolate(), left, right), Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2614 | break; |
| 2615 | case Token::BIT_AND: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2616 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), result, |
| 2617 | Object::BitwiseAnd(isolate(), left, right), |
| 2618 | Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2619 | break; |
| 2620 | case Token::BIT_XOR: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2621 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), result, |
| 2622 | Object::BitwiseXor(isolate(), left, right), |
| 2623 | Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2624 | break; |
| 2625 | case Token::SAR: |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2626 | ASSIGN_RETURN_ON_EXCEPTION(isolate(), result, |
| 2627 | Object::ShiftRight(isolate(), left, right), |
| 2628 | Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2629 | break; |
| 2630 | case Token::SHR: |
| 2631 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2632 | isolate(), result, Object::ShiftRightLogical(isolate(), left, right), |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2633 | Object); |
| 2634 | break; |
| 2635 | case Token::SHL: |
| 2636 | ASSIGN_RETURN_ON_EXCEPTION( |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2637 | isolate(), result, Object::ShiftLeft(isolate(), left, right), Object); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2638 | break; |
| 2639 | } |
| 2640 | |
| 2641 | // Do not try to update the target if the code was marked for lazy |
| 2642 | // deoptimization. (Since we do not relocate addresses in these |
| 2643 | // code objects, an attempt to access the target could fail.) |
| 2644 | if (AddressIsDeoptimizedCode()) { |
| 2645 | return result; |
| 2646 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2647 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2648 | // Compute the new state. |
| 2649 | BinaryOpICState old_state(isolate(), target()->extra_ic_state()); |
| 2650 | state.Update(left, right, result); |
| 2651 | |
| 2652 | // Check if we have a string operation here. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2653 | Handle<Code> new_target; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2654 | if (!allocation_site.is_null() || state.ShouldCreateAllocationMementos()) { |
| 2655 | // Setup the allocation site on-demand. |
| 2656 | if (allocation_site.is_null()) { |
| 2657 | allocation_site = isolate()->factory()->NewAllocationSite(); |
| 2658 | } |
| 2659 | |
| 2660 | // Install the stub with an allocation site. |
| 2661 | BinaryOpICWithAllocationSiteStub stub(isolate(), state); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2662 | new_target = stub.GetCodeCopyFromTemplate(allocation_site); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2663 | |
| 2664 | // Sanity check the trampoline stub. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2665 | DCHECK_EQ(*allocation_site, new_target->FindFirstAllocationSite()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2666 | } else { |
| 2667 | // Install the generic stub. |
| 2668 | BinaryOpICStub stub(isolate(), state); |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2669 | new_target = stub.GetCode(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2670 | |
| 2671 | // Sanity check the generic stub. |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2672 | DCHECK_NULL(new_target->FindFirstAllocationSite()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2673 | } |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2674 | set_target(*new_target); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2675 | |
| 2676 | if (FLAG_trace_ic) { |
| 2677 | OFStream os(stdout); |
| 2678 | os << "[BinaryOpIC" << old_state << " => " << state << " @ " |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2679 | << static_cast<void*>(*new_target) << " <- "; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2680 | JavaScriptFrame::PrintTop(isolate(), stdout, false, true); |
| 2681 | if (!allocation_site.is_null()) { |
| 2682 | os << " using allocation site " << static_cast<void*>(*allocation_site); |
| 2683 | } |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2684 | os << "]" << std::endl; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2685 | } |
| 2686 | |
| 2687 | // Patch the inlined smi code as necessary. |
| 2688 | if (!old_state.UseInlinedSmiCode() && state.UseInlinedSmiCode()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2689 | PatchInlinedSmiCode(isolate(), address(), ENABLE_INLINED_SMI_CHECK); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2690 | } else if (old_state.UseInlinedSmiCode() && !state.UseInlinedSmiCode()) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2691 | PatchInlinedSmiCode(isolate(), address(), DISABLE_INLINED_SMI_CHECK); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2692 | } |
| 2693 | |
| 2694 | return result; |
| 2695 | } |
| 2696 | |
| 2697 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2698 | RUNTIME_FUNCTION(Runtime_BinaryOpIC_Miss) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2699 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2700 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2701 | HandleScope scope(isolate); |
| 2702 | DCHECK_EQ(2, args.length()); |
| 2703 | Handle<Object> left = args.at<Object>(BinaryOpICStub::kLeft); |
| 2704 | Handle<Object> right = args.at<Object>(BinaryOpICStub::kRight); |
| 2705 | BinaryOpIC ic(isolate); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2706 | RETURN_RESULT_OR_FAILURE( |
| 2707 | isolate, ic.Transition(Handle<AllocationSite>::null(), left, right)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2708 | } |
| 2709 | |
| 2710 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2711 | RUNTIME_FUNCTION(Runtime_BinaryOpIC_MissWithAllocationSite) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2712 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2713 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2714 | HandleScope scope(isolate); |
| 2715 | DCHECK_EQ(3, args.length()); |
| 2716 | Handle<AllocationSite> allocation_site = |
| 2717 | args.at<AllocationSite>(BinaryOpWithAllocationSiteStub::kAllocationSite); |
| 2718 | Handle<Object> left = args.at<Object>(BinaryOpWithAllocationSiteStub::kLeft); |
| 2719 | Handle<Object> right = |
| 2720 | args.at<Object>(BinaryOpWithAllocationSiteStub::kRight); |
| 2721 | BinaryOpIC ic(isolate); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2722 | RETURN_RESULT_OR_FAILURE(isolate, |
| 2723 | ic.Transition(allocation_site, left, right)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2724 | } |
| 2725 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2726 | Code* CompareIC::GetRawUninitialized(Isolate* isolate, Token::Value op) { |
| 2727 | CompareICStub stub(isolate, op, CompareICState::UNINITIALIZED, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2728 | CompareICState::UNINITIALIZED, |
| 2729 | CompareICState::UNINITIALIZED); |
| 2730 | Code* code = NULL; |
| 2731 | CHECK(stub.FindCodeInCache(&code)); |
| 2732 | return code; |
| 2733 | } |
| 2734 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2735 | Handle<Code> CompareIC::GetUninitialized(Isolate* isolate, Token::Value op) { |
| 2736 | CompareICStub stub(isolate, op, CompareICState::UNINITIALIZED, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2737 | CompareICState::UNINITIALIZED, |
| 2738 | CompareICState::UNINITIALIZED); |
| 2739 | return stub.GetCode(); |
| 2740 | } |
| 2741 | |
| 2742 | |
| 2743 | Code* CompareIC::UpdateCaches(Handle<Object> x, Handle<Object> y) { |
| 2744 | HandleScope scope(isolate()); |
| 2745 | CompareICStub old_stub(target()->stub_key(), isolate()); |
| 2746 | CompareICState::State new_left = |
| 2747 | CompareICState::NewInputState(old_stub.left(), x); |
| 2748 | CompareICState::State new_right = |
| 2749 | CompareICState::NewInputState(old_stub.right(), y); |
| 2750 | CompareICState::State state = CompareICState::TargetState( |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2751 | isolate(), old_stub.state(), old_stub.left(), old_stub.right(), op_, |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2752 | HasInlinedSmiCode(address()), x, y); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2753 | CompareICStub stub(isolate(), op_, new_left, new_right, state); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2754 | if (state == CompareICState::KNOWN_RECEIVER) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2755 | stub.set_known_map( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2756 | Handle<Map>(Handle<JSReceiver>::cast(x)->map(), isolate())); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2757 | } |
| 2758 | Handle<Code> new_target = stub.GetCode(); |
| 2759 | set_target(*new_target); |
| 2760 | |
| 2761 | if (FLAG_trace_ic) { |
| 2762 | PrintF("[CompareIC in "); |
| 2763 | JavaScriptFrame::PrintTop(isolate(), stdout, false, true); |
| 2764 | PrintF(" ((%s+%s=%s)->(%s+%s=%s))#%s @ %p]\n", |
| 2765 | CompareICState::GetStateName(old_stub.left()), |
| 2766 | CompareICState::GetStateName(old_stub.right()), |
| 2767 | CompareICState::GetStateName(old_stub.state()), |
| 2768 | CompareICState::GetStateName(new_left), |
| 2769 | CompareICState::GetStateName(new_right), |
| 2770 | CompareICState::GetStateName(state), Token::Name(op_), |
| 2771 | static_cast<void*>(*stub.GetCode())); |
| 2772 | } |
| 2773 | |
| 2774 | // Activate inlined smi code. |
| 2775 | if (old_stub.state() == CompareICState::UNINITIALIZED) { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2776 | PatchInlinedSmiCode(isolate(), address(), ENABLE_INLINED_SMI_CHECK); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2777 | } |
| 2778 | |
| 2779 | return *new_target; |
| 2780 | } |
| 2781 | |
| 2782 | |
| 2783 | // Used from CompareICStub::GenerateMiss in code-stubs-<arch>.cc. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2784 | RUNTIME_FUNCTION(Runtime_CompareIC_Miss) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2785 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2786 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2787 | HandleScope scope(isolate); |
| 2788 | DCHECK(args.length() == 3); |
| 2789 | CompareIC ic(isolate, static_cast<Token::Value>(args.smi_at(2))); |
| 2790 | return ic.UpdateCaches(args.at<Object>(0), args.at<Object>(1)); |
| 2791 | } |
| 2792 | |
| 2793 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2794 | RUNTIME_FUNCTION(Runtime_Unreachable) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2795 | UNREACHABLE(); |
| 2796 | CHECK(false); |
| 2797 | return isolate->heap()->undefined_value(); |
| 2798 | } |
| 2799 | |
| 2800 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2801 | Handle<Object> ToBooleanIC::ToBoolean(Handle<Object> object) { |
Ben Murdoch | c561043 | 2016-08-08 18:44:38 +0100 | [diff] [blame] | 2802 | ToBooleanICStub stub(isolate(), extra_ic_state()); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2803 | bool to_boolean_value = stub.UpdateStatus(object); |
| 2804 | Handle<Code> code = stub.GetCode(); |
| 2805 | set_target(*code); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2806 | return isolate()->factory()->ToBoolean(to_boolean_value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2807 | } |
| 2808 | |
| 2809 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2810 | RUNTIME_FUNCTION(Runtime_ToBooleanIC_Miss) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2811 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2812 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2813 | DCHECK(args.length() == 1); |
| 2814 | HandleScope scope(isolate); |
| 2815 | Handle<Object> object = args.at<Object>(0); |
| 2816 | ToBooleanIC ic(isolate); |
| 2817 | return *ic.ToBoolean(object); |
| 2818 | } |
| 2819 | |
| 2820 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2821 | RUNTIME_FUNCTION(Runtime_StoreCallbackProperty) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2822 | Handle<JSObject> receiver = args.at<JSObject>(0); |
| 2823 | Handle<JSObject> holder = args.at<JSObject>(1); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2824 | Handle<HeapObject> callback_or_cell = args.at<HeapObject>(2); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2825 | Handle<Name> name = args.at<Name>(3); |
| 2826 | Handle<Object> value = args.at<Object>(4); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2827 | CONVERT_LANGUAGE_MODE_ARG_CHECKED(language_mode, 5); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2828 | HandleScope scope(isolate); |
| 2829 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2830 | if (FLAG_runtime_call_stats) { |
| 2831 | RETURN_RESULT_OR_FAILURE( |
| 2832 | isolate, Runtime::SetObjectProperty(isolate, receiver, name, value, |
| 2833 | language_mode)); |
| 2834 | } |
| 2835 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2836 | Handle<AccessorInfo> callback( |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2837 | callback_or_cell->IsWeakCell() |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2838 | ? AccessorInfo::cast(WeakCell::cast(*callback_or_cell)->value()) |
| 2839 | : AccessorInfo::cast(*callback_or_cell)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2840 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2841 | DCHECK(callback->IsCompatibleReceiver(*receiver)); |
| 2842 | |
| 2843 | Address setter_address = v8::ToCData<Address>(callback->setter()); |
| 2844 | v8::AccessorNameSetterCallback fun = |
| 2845 | FUNCTION_CAST<v8::AccessorNameSetterCallback>(setter_address); |
| 2846 | DCHECK(fun != NULL); |
| 2847 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2848 | Object::ShouldThrow should_throw = |
| 2849 | is_sloppy(language_mode) ? Object::DONT_THROW : Object::THROW_ON_ERROR; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2850 | PropertyCallbackArguments custom_args(isolate, callback->data(), *receiver, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 2851 | *holder, should_throw); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2852 | custom_args.Call(fun, name, value); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2853 | RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate); |
| 2854 | return *value; |
| 2855 | } |
| 2856 | |
| 2857 | |
| 2858 | /** |
| 2859 | * Attempts to load a property with an interceptor (which must be present), |
| 2860 | * but doesn't search the prototype chain. |
| 2861 | * |
| 2862 | * Returns |Heap::no_interceptor_result_sentinel()| if interceptor doesn't |
| 2863 | * provide any value for the given name. |
| 2864 | */ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2865 | RUNTIME_FUNCTION(Runtime_LoadPropertyWithInterceptorOnly) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2866 | DCHECK(args.length() == NamedLoadHandlerCompiler::kInterceptorArgsLength); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 2867 | Handle<Name> name = |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2868 | args.at<Name>(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2869 | Handle<Object> receiver = |
| 2870 | args.at<Object>(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2871 | Handle<JSObject> holder = |
| 2872 | args.at<JSObject>(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2873 | HandleScope scope(isolate); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2874 | |
| 2875 | if (!receiver->IsJSReceiver()) { |
| 2876 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| 2877 | isolate, receiver, Object::ConvertReceiver(isolate, receiver)); |
| 2878 | } |
| 2879 | |
| 2880 | InterceptorInfo* interceptor = holder->GetNamedInterceptor(); |
| 2881 | PropertyCallbackArguments arguments(isolate, interceptor->data(), *receiver, |
| 2882 | *holder, Object::DONT_THROW); |
| 2883 | |
| 2884 | v8::GenericNamedPropertyGetterCallback getter = |
| 2885 | v8::ToCData<v8::GenericNamedPropertyGetterCallback>( |
| 2886 | interceptor->getter()); |
| 2887 | Handle<Object> result = arguments.Call(getter, name); |
| 2888 | |
| 2889 | RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate); |
| 2890 | |
| 2891 | if (!result.is_null()) return *result; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2892 | return isolate->heap()->no_interceptor_result_sentinel(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2893 | } |
| 2894 | |
| 2895 | |
| 2896 | /** |
| 2897 | * Loads a property with an interceptor performing post interceptor |
| 2898 | * lookup if interceptor failed. |
| 2899 | */ |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2900 | RUNTIME_FUNCTION(Runtime_LoadPropertyWithInterceptor) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2901 | HandleScope scope(isolate); |
| 2902 | DCHECK(args.length() == NamedLoadHandlerCompiler::kInterceptorArgsLength); |
| 2903 | Handle<Name> name = |
| 2904 | args.at<Name>(NamedLoadHandlerCompiler::kInterceptorArgsNameIndex); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2905 | Handle<Object> receiver = |
| 2906 | args.at<Object>(NamedLoadHandlerCompiler::kInterceptorArgsThisIndex); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2907 | Handle<JSObject> holder = |
| 2908 | args.at<JSObject>(NamedLoadHandlerCompiler::kInterceptorArgsHolderIndex); |
| 2909 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2910 | if (!receiver->IsJSReceiver()) { |
| 2911 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| 2912 | isolate, receiver, Object::ConvertReceiver(isolate, receiver)); |
| 2913 | } |
| 2914 | |
| 2915 | InterceptorInfo* interceptor = holder->GetNamedInterceptor(); |
| 2916 | PropertyCallbackArguments arguments(isolate, interceptor->data(), *receiver, |
| 2917 | *holder, Object::DONT_THROW); |
| 2918 | |
| 2919 | v8::GenericNamedPropertyGetterCallback getter = |
| 2920 | v8::ToCData<v8::GenericNamedPropertyGetterCallback>( |
| 2921 | interceptor->getter()); |
| 2922 | Handle<Object> result = arguments.Call(getter, name); |
| 2923 | |
| 2924 | RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate); |
| 2925 | |
| 2926 | if (!result.is_null()) return *result; |
| 2927 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2928 | LookupIterator it(receiver, name, holder); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2929 | // Skip any lookup work until we hit the (possibly non-masking) interceptor. |
| 2930 | while (it.state() != LookupIterator::INTERCEPTOR || |
| 2931 | !it.GetHolder<JSObject>().is_identical_to(holder)) { |
| 2932 | DCHECK(it.state() != LookupIterator::ACCESS_CHECK || it.HasAccess()); |
| 2933 | it.Next(); |
| 2934 | } |
| 2935 | // Skip past the interceptor. |
| 2936 | it.Next(); |
| 2937 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result, Object::GetProperty(&it)); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2938 | |
| 2939 | if (it.IsFound()) return *result; |
| 2940 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2941 | #ifdef DEBUG |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2942 | LoadICNexus nexus(isolate); |
| 2943 | LoadIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2944 | // It could actually be any kind of LoadICs here but the predicate handles |
| 2945 | // all the cases properly. |
| 2946 | DCHECK(!ic.ShouldThrowReferenceError()); |
| 2947 | #endif |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2948 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 2949 | return isolate->heap()->undefined_value(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2950 | } |
| 2951 | |
| 2952 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2953 | RUNTIME_FUNCTION(Runtime_StorePropertyWithInterceptor) { |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2954 | HandleScope scope(isolate); |
| 2955 | DCHECK(args.length() == 3); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2956 | StoreICNexus nexus(isolate); |
| 2957 | StoreIC ic(IC::NO_EXTRA_FRAME, isolate, &nexus); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2958 | Handle<JSObject> receiver = args.at<JSObject>(0); |
| 2959 | Handle<Name> name = args.at<Name>(1); |
| 2960 | Handle<Object> value = args.at<Object>(2); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2961 | |
| 2962 | DCHECK(receiver->HasNamedInterceptor()); |
| 2963 | InterceptorInfo* interceptor = receiver->GetNamedInterceptor(); |
| 2964 | DCHECK(!interceptor->non_masking()); |
| 2965 | PropertyCallbackArguments arguments(isolate, interceptor->data(), *receiver, |
| 2966 | *receiver, Object::DONT_THROW); |
| 2967 | |
| 2968 | v8::GenericNamedPropertySetterCallback setter = |
| 2969 | v8::ToCData<v8::GenericNamedPropertySetterCallback>( |
| 2970 | interceptor->setter()); |
| 2971 | Handle<Object> result = arguments.Call(setter, name, value); |
| 2972 | RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate); |
| 2973 | if (!result.is_null()) return *value; |
| 2974 | |
| 2975 | LookupIterator it(receiver, name, receiver); |
| 2976 | // Skip past any access check on the receiver. |
| 2977 | if (it.state() == LookupIterator::ACCESS_CHECK) { |
| 2978 | DCHECK(it.HasAccess()); |
| 2979 | it.Next(); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2980 | } |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2981 | // Skip past the interceptor on the receiver. |
| 2982 | DCHECK_EQ(LookupIterator::INTERCEPTOR, it.state()); |
| 2983 | it.Next(); |
| 2984 | |
| 2985 | MAYBE_RETURN(Object::SetProperty(&it, value, ic.language_mode(), |
| 2986 | JSReceiver::CERTAINLY_NOT_STORE_FROM_KEYED), |
| 2987 | isolate->heap()->exception()); |
| 2988 | return *value; |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2989 | } |
| 2990 | |
| 2991 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 2992 | RUNTIME_FUNCTION(Runtime_LoadElementWithInterceptor) { |
| 2993 | // TODO(verwaest): This should probably get the holder and receiver as input. |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 2994 | HandleScope scope(isolate); |
| 2995 | Handle<JSObject> receiver = args.at<JSObject>(0); |
| 2996 | DCHECK(args.smi_at(1) >= 0); |
| 2997 | uint32_t index = args.smi_at(1); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 2998 | |
| 2999 | InterceptorInfo* interceptor = receiver->GetIndexedInterceptor(); |
| 3000 | PropertyCallbackArguments arguments(isolate, interceptor->data(), *receiver, |
| 3001 | *receiver, Object::DONT_THROW); |
| 3002 | |
| 3003 | v8::IndexedPropertyGetterCallback getter = |
| 3004 | v8::ToCData<v8::IndexedPropertyGetterCallback>(interceptor->getter()); |
| 3005 | Handle<Object> result = arguments.Call(getter, index); |
| 3006 | |
| 3007 | RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate); |
| 3008 | |
| 3009 | if (result.is_null()) { |
| 3010 | LookupIterator it(isolate, receiver, index, receiver); |
| 3011 | DCHECK_EQ(LookupIterator::INTERCEPTOR, it.state()); |
| 3012 | it.Next(); |
| 3013 | ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result, |
| 3014 | Object::GetProperty(&it)); |
| 3015 | } |
| 3016 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3017 | return *result; |
| 3018 | } |
| 3019 | |
| 3020 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3021 | RUNTIME_FUNCTION(Runtime_LoadIC_MissFromStubFailure) { |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3022 | TimerEventScope<TimerEventIcMiss> timer(isolate); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 3023 | TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("v8"), "V8.IcMiss"); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3024 | HandleScope scope(isolate); |
| 3025 | Handle<Object> receiver = args.at<Object>(0); |
| 3026 | Handle<Name> key = args.at<Name>(1); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3027 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3028 | DCHECK(args.length() == 4); |
| 3029 | Handle<Smi> slot = args.at<Smi>(2); |
| 3030 | Handle<TypeFeedbackVector> vector = args.at<TypeFeedbackVector>(3); |
| 3031 | FeedbackVectorSlot vector_slot = vector->ToSlot(slot->value()); |
| 3032 | // A monomorphic or polymorphic KeyedLoadIC with a string key can call the |
| 3033 | // LoadIC miss handler if the handler misses. Since the vector Nexus is |
| 3034 | // set up outside the IC, handle that here. |
| 3035 | if (vector->GetKind(vector_slot) == FeedbackVectorSlotKind::LOAD_IC) { |
| 3036 | LoadICNexus nexus(vector, vector_slot); |
| 3037 | LoadIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus); |
| 3038 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 3039 | RETURN_RESULT_OR_FAILURE(isolate, ic.Load(receiver, key)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3040 | } else { |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3041 | DCHECK_EQ(FeedbackVectorSlotKind::KEYED_LOAD_IC, |
| 3042 | vector->GetKind(vector_slot)); |
| 3043 | KeyedLoadICNexus nexus(vector, vector_slot); |
| 3044 | KeyedLoadIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3045 | ic.UpdateState(receiver, key); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 3046 | RETURN_RESULT_OR_FAILURE(isolate, ic.Load(receiver, key)); |
Emily Bernier | d0a1eb7 | 2015-03-24 16:35:39 -0400 | [diff] [blame] | 3047 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 3048 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 3049 | } // namespace internal |
| 3050 | } // namespace v8 |