ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #include "accessors.h" |
| 31 | #include "api.h" |
| 32 | #include "arguments.h" |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 33 | #include "codegen.h" |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 34 | #include "execution.h" |
| 35 | #include "ic-inl.h" |
| 36 | #include "runtime.h" |
| 37 | #include "stub-cache.h" |
| 38 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 39 | namespace v8 { |
| 40 | namespace internal { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 41 | |
| 42 | #ifdef DEBUG |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 43 | char IC::TransitionMarkFromState(IC::State state) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 44 | switch (state) { |
| 45 | case UNINITIALIZED: return '0'; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 46 | case PREMONOMORPHIC: return '.'; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 47 | case MONOMORPHIC: return '1'; |
| 48 | case MONOMORPHIC_PROTOTYPE_FAILURE: return '^'; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 49 | case POLYMORPHIC: return 'P'; |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 50 | case MEGAMORPHIC: return 'N'; |
| 51 | case GENERIC: return 'G'; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 52 | |
| 53 | // We never see the debugger states here, because the state is |
| 54 | // computed from the original code - not the patched code. Let |
| 55 | // these cases fall through to the unreachable code below. |
yangguo@chromium.org | 9768bf1 | 2013-01-11 14:51:07 +0000 | [diff] [blame] | 56 | case DEBUG_STUB: break; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 57 | } |
| 58 | UNREACHABLE(); |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | void IC::TraceIC(const char* type, |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 63 | Handle<Object> name, |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 64 | State old_state, |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 65 | Code* new_target) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 66 | if (FLAG_trace_ic) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 67 | Object* undef = new_target->GetHeap()->undefined_value(); |
| 68 | State new_state = StateFrom(new_target, undef, undef); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 69 | PrintF("[%s in ", type); |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 70 | Isolate* isolate = new_target->GetIsolate(); |
| 71 | StackFrameIterator it(isolate); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 72 | while (it.frame()->fp() != this->fp()) it.Advance(); |
| 73 | StackFrame* raw_frame = it.frame(); |
| 74 | if (raw_frame->is_internal()) { |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 75 | Code* apply_builtin = isolate->builtins()->builtin( |
| 76 | Builtins::kFunctionApply); |
| 77 | if (raw_frame->unchecked_code() == apply_builtin) { |
| 78 | PrintF("apply from "); |
| 79 | it.Advance(); |
| 80 | raw_frame = it.frame(); |
| 81 | } |
| 82 | } |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 83 | JavaScriptFrame::PrintTop(isolate, stdout, false, true); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 84 | bool new_can_grow = |
| 85 | Code::GetKeyedAccessGrowMode(new_target->extra_ic_state()) == |
| 86 | ALLOW_JSARRAY_GROWTH; |
| 87 | PrintF(" (%c->%c%s)", |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 88 | TransitionMarkFromState(old_state), |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 89 | TransitionMarkFromState(new_state), |
| 90 | new_can_grow ? ".GROW" : ""); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 91 | name->Print(); |
| 92 | PrintF("]\n"); |
| 93 | } |
| 94 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 95 | |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 96 | #define TRACE_GENERIC_IC(isolate, type, reason) \ |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 97 | do { \ |
| 98 | if (FLAG_trace_ic) { \ |
| 99 | PrintF("[%s patching generic stub in ", type); \ |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 100 | JavaScriptFrame::PrintTop(isolate, stdout, false, true); \ |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 101 | PrintF(" (%s)]\n", reason); \ |
| 102 | } \ |
| 103 | } while (false) |
| 104 | |
| 105 | #else |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 106 | #define TRACE_GENERIC_IC(isolate, type, reason) |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 107 | #endif // DEBUG |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 108 | |
| 109 | #define TRACE_IC(type, name, old_state, new_target) \ |
| 110 | ASSERT((TraceIC(type, name, old_state, new_target), true)) |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 111 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 112 | IC::IC(FrameDepth depth, Isolate* isolate) : isolate_(isolate) { |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 113 | // To improve the performance of the (much used) IC code, we unfold a few |
| 114 | // levels of the stack frame iteration code. This yields a ~35% speedup when |
| 115 | // running DeltaBlue and a ~25% speedup of gbemu with the '--nouse-ic' flag. |
| 116 | const Address entry = |
| 117 | Isolate::c_entry_fp(isolate->thread_local_top()); |
| 118 | Address* pc_address = |
| 119 | reinterpret_cast<Address*>(entry + ExitFrameConstants::kCallerPCOffset); |
| 120 | Address fp = Memory::Address_at(entry + ExitFrameConstants::kCallerFPOffset); |
| 121 | // If there's another JavaScript frame on the stack or a |
| 122 | // StubFailureTrampoline, we need to look one frame further down the stack to |
| 123 | // find the frame pointer and the return address stack slot. |
| 124 | if (depth == EXTRA_CALL_FRAME) { |
| 125 | const int kCallerPCOffset = StandardFrameConstants::kCallerPCOffset; |
| 126 | pc_address = reinterpret_cast<Address*>(fp + kCallerPCOffset); |
| 127 | fp = Memory::Address_at(fp + StandardFrameConstants::kCallerFPOffset); |
| 128 | } |
| 129 | #ifdef DEBUG |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 130 | StackFrameIterator it(isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 131 | for (int i = 0; i < depth + 1; i++) it.Advance(); |
| 132 | StackFrame* frame = it.frame(); |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 133 | ASSERT(fp == frame->fp() && pc_address == frame->pc_address()); |
| 134 | #endif |
| 135 | fp_ = fp; |
| 136 | pc_address_ = pc_address; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 140 | #ifdef ENABLE_DEBUGGER_SUPPORT |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 141 | Address IC::OriginalCodeAddress() const { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 142 | HandleScope scope(isolate()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 143 | // Compute the JavaScript frame for the frame pointer of this IC |
| 144 | // structure. We need this to be able to find the function |
| 145 | // corresponding to the frame. |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 146 | StackFrameIterator it(isolate()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 147 | while (it.frame()->fp() != this->fp()) it.Advance(); |
| 148 | JavaScriptFrame* frame = JavaScriptFrame::cast(it.frame()); |
| 149 | // Find the function on the stack and both the active code for the |
| 150 | // function and the original code. |
| 151 | JSFunction* function = JSFunction::cast(frame->function()); |
| 152 | Handle<SharedFunctionInfo> shared(function->shared()); |
| 153 | Code* code = shared->code(); |
| 154 | ASSERT(Debug::HasDebugInfo(shared)); |
| 155 | Code* original_code = Debug::GetDebugInfo(shared)->original_code(); |
| 156 | ASSERT(original_code->IsCode()); |
| 157 | // Get the address of the call site in the active code. This is the |
| 158 | // place where the call to DebugBreakXXX is and where the IC |
| 159 | // normally would be. |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 160 | Address addr = Assembler::target_address_from_return_address(pc()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 161 | // Return the address in the original code. This is the place where |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 162 | // the call which has been overwritten by the DebugBreakXXX resides |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 163 | // and the place where the inline cache system should look. |
ager@chromium.org | c4c9272 | 2009-11-18 14:12:51 +0000 | [diff] [blame] | 164 | intptr_t delta = |
| 165 | original_code->instruction_start() - code->instruction_start(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 166 | return addr + delta; |
| 167 | } |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 168 | #endif |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 169 | |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 170 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 171 | static bool TryRemoveInvalidPrototypeDependentStub(Code* target, |
| 172 | Object* receiver, |
| 173 | Object* name) { |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 174 | InlineCacheHolderFlag cache_holder = |
| 175 | Code::ExtractCacheHolderFromFlags(target->flags()); |
| 176 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 177 | Isolate* isolate = target->GetIsolate(); |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 178 | if (cache_holder == OWN_MAP && !receiver->IsJSObject()) { |
| 179 | // The stub was generated for JSObject but called for non-JSObject. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 180 | // IC::GetCodeCacheHolder is not applicable. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 181 | return false; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 182 | } else if (cache_holder == DELEGATE_MAP && |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 183 | receiver->GetPrototype(isolate)->IsNull()) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 184 | // IC::GetCodeCacheHolder is not applicable. |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 185 | return false; |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 186 | } |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 187 | Map* map = IC::GetCodeCacheHolder(isolate, receiver, cache_holder)->map(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 188 | |
| 189 | // Decide whether the inline cache failed because of changes to the |
| 190 | // receiver itself or changes to one of its prototypes. |
| 191 | // |
| 192 | // If there are changes to the receiver itself, the map of the |
| 193 | // receiver will have changed and the current target will not be in |
| 194 | // the receiver map's code cache. Therefore, if the current target |
| 195 | // is in the receiver map's code cache, the inline cache failed due |
| 196 | // to prototype check failure. |
sgjesse@chromium.org | 99a37fa | 2010-03-11 09:23:46 +0000 | [diff] [blame] | 197 | int index = map->IndexInCodeCache(name, target); |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 198 | if (index >= 0) { |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 199 | map->RemoveFromCodeCache(String::cast(name), target, index); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 200 | return true; |
| 201 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 202 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 203 | return false; |
| 204 | } |
| 205 | |
| 206 | |
| 207 | IC::State IC::StateFrom(Code* target, Object* receiver, Object* name) { |
| 208 | IC::State state = target->ic_state(); |
| 209 | |
| 210 | if (state != MONOMORPHIC || !name->IsString()) return state; |
| 211 | if (receiver->IsUndefined() || receiver->IsNull()) return state; |
| 212 | |
| 213 | // For keyed load/store/call, the most likely cause of cache failure is |
| 214 | // that the key has changed. We do not distinguish between |
| 215 | // prototype and non-prototype failures for keyed access. |
| 216 | Code::Kind kind = target->kind(); |
| 217 | if (kind == Code::KEYED_LOAD_IC || |
| 218 | kind == Code::KEYED_STORE_IC || |
| 219 | kind == Code::KEYED_CALL_IC) { |
| 220 | return MONOMORPHIC; |
| 221 | } |
| 222 | |
| 223 | // Remove the target from the code cache if it became invalid |
| 224 | // because of changes in the prototype chain to avoid hitting it |
| 225 | // again. |
| 226 | // Call stubs handle this later to allow extra IC state |
| 227 | // transitions. |
| 228 | if (kind != Code::CALL_IC && |
| 229 | TryRemoveInvalidPrototypeDependentStub(target, receiver, name)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 230 | return MONOMORPHIC_PROTOTYPE_FAILURE; |
| 231 | } |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 232 | |
| 233 | // The builtins object is special. It only changes when JavaScript |
| 234 | // builtins are loaded lazily. It is important to keep inline |
| 235 | // caches for the builtins object monomorphic. Therefore, if we get |
| 236 | // an inline cache miss for the builtins object after lazily loading |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 237 | // JavaScript builtins, we return uninitialized as the state to |
| 238 | // force the inline cache back to monomorphic state. |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 239 | if (receiver->IsJSBuiltinsObject()) { |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 240 | return UNINITIALIZED; |
| 241 | } |
| 242 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 243 | return MONOMORPHIC; |
| 244 | } |
| 245 | |
| 246 | |
ager@chromium.org | 236ad96 | 2008-09-25 09:45:57 +0000 | [diff] [blame] | 247 | RelocInfo::Mode IC::ComputeMode() { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 248 | Address addr = address(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 249 | Code* code = Code::cast(isolate()->heap()->FindCodeObject(addr)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 250 | for (RelocIterator it(code, RelocInfo::kCodeTargetMask); |
| 251 | !it.done(); it.next()) { |
| 252 | RelocInfo* info = it.rinfo(); |
| 253 | if (info->pc() == addr) return info->rmode(); |
| 254 | } |
| 255 | UNREACHABLE(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 256 | return RelocInfo::NONE32; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | |
| 260 | Failure* IC::TypeError(const char* type, |
| 261 | Handle<Object> object, |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 262 | Handle<Object> key) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 263 | HandleScope scope(isolate()); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 264 | Handle<Object> args[2] = { key, object }; |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 265 | Handle<Object> error = isolate()->factory()->NewTypeError( |
| 266 | type, HandleVector(args, 2)); |
| 267 | return isolate()->Throw(*error); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | |
| 271 | Failure* IC::ReferenceError(const char* type, Handle<String> name) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 272 | HandleScope scope(isolate()); |
| 273 | Handle<Object> error = isolate()->factory()->NewReferenceError( |
| 274 | type, HandleVector(&name, 1)); |
| 275 | return isolate()->Throw(*error); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 276 | } |
| 277 | |
| 278 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 279 | static int ComputeTypeInfoCountDelta(IC::State old_state, IC::State new_state) { |
| 280 | bool was_uninitialized = |
| 281 | old_state == UNINITIALIZED || old_state == PREMONOMORPHIC; |
| 282 | bool is_uninitialized = |
| 283 | new_state == UNINITIALIZED || new_state == PREMONOMORPHIC; |
| 284 | return (was_uninitialized && !is_uninitialized) ? 1 : |
| 285 | (!was_uninitialized && is_uninitialized) ? -1 : 0; |
| 286 | } |
| 287 | |
| 288 | |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 289 | void IC::PostPatching(Address address, Code* target, Code* old_target) { |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 290 | if (FLAG_type_info_threshold == 0 && !FLAG_watch_ic_patching) { |
| 291 | return; |
| 292 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 293 | Isolate* isolate = target->GetHeap()->isolate(); |
| 294 | Code* host = isolate-> |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 295 | inner_pointer_to_code_cache()->GetCacheEntry(address)->code; |
| 296 | if (host->kind() != Code::FUNCTION) return; |
| 297 | |
| 298 | if (FLAG_type_info_threshold > 0 && |
| 299 | old_target->is_inline_cache_stub() && |
| 300 | target->is_inline_cache_stub()) { |
| 301 | int delta = ComputeTypeInfoCountDelta(old_target->ic_state(), |
| 302 | target->ic_state()); |
| 303 | // Not all Code objects have TypeFeedbackInfo. |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 304 | if (host->type_feedback_info()->IsTypeFeedbackInfo() && delta != 0) { |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 305 | TypeFeedbackInfo* info = |
| 306 | TypeFeedbackInfo::cast(host->type_feedback_info()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 307 | info->change_ic_with_type_info_count(delta); |
jkummerow@chromium.org | f7a5884 | 2012-02-21 10:08:21 +0000 | [diff] [blame] | 308 | } |
| 309 | } |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 310 | if (host->type_feedback_info()->IsTypeFeedbackInfo()) { |
| 311 | TypeFeedbackInfo* info = |
| 312 | TypeFeedbackInfo::cast(host->type_feedback_info()); |
| 313 | info->change_own_type_change_checksum(); |
| 314 | } |
yangguo@chromium.org | 78d1ad4 | 2012-02-09 13:53:47 +0000 | [diff] [blame] | 315 | if (FLAG_watch_ic_patching) { |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 316 | host->set_profiler_ticks(0); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 317 | isolate->runtime_profiler()->NotifyICChanged(); |
yangguo@chromium.org | 78d1ad4 | 2012-02-09 13:53:47 +0000 | [diff] [blame] | 318 | } |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 319 | // TODO(2029): When an optimized function is patched, it would |
| 320 | // be nice to propagate the corresponding type information to its |
| 321 | // unoptimized version for the benefit of later inlining. |
yangguo@chromium.org | 78d1ad4 | 2012-02-09 13:53:47 +0000 | [diff] [blame] | 322 | } |
| 323 | |
| 324 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 325 | void IC::Clear(Address address) { |
| 326 | Code* target = GetTargetAtAddress(address); |
| 327 | |
| 328 | // Don't clear debug break inline cache as it will remove the break point. |
yangguo@chromium.org | 9768bf1 | 2013-01-11 14:51:07 +0000 | [diff] [blame] | 329 | if (target->is_debug_break()) return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 330 | |
| 331 | switch (target->kind()) { |
| 332 | case Code::LOAD_IC: return LoadIC::Clear(address, target); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 333 | case Code::KEYED_LOAD_IC: return KeyedLoadIC::Clear(address, target); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 334 | case Code::STORE_IC: return StoreIC::Clear(address, target); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 335 | case Code::KEYED_STORE_IC: return KeyedStoreIC::Clear(address, target); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 336 | case Code::CALL_IC: return CallIC::Clear(address, target); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 337 | case Code::KEYED_CALL_IC: return KeyedCallIC::Clear(address, target); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 338 | case Code::COMPARE_IC: return CompareIC::Clear(address, target); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 339 | case Code::UNARY_OP_IC: |
| 340 | case Code::BINARY_OP_IC: |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 341 | case Code::TO_BOOLEAN_IC: |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 342 | // Clearing these is tricky and does not |
| 343 | // make any performance difference. |
| 344 | return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 345 | default: UNREACHABLE(); |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 350 | void CallICBase::Clear(Address address, Code* target) { |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 351 | if (target->ic_state() == UNINITIALIZED) return; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 352 | bool contextual = CallICBase::Contextual::decode(target->extra_ic_state()); |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 353 | Code* code = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 354 | Isolate::Current()->stub_cache()->FindCallInitialize( |
| 355 | target->arguments_count(), |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 356 | contextual ? RelocInfo::CODE_TARGET_CONTEXT : RelocInfo::CODE_TARGET, |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 357 | target->kind()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 358 | SetTargetAtAddress(address, code); |
| 359 | } |
| 360 | |
| 361 | |
| 362 | void KeyedLoadIC::Clear(Address address, Code* target) { |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 363 | if (target->ic_state() == UNINITIALIZED) return; |
christian.plesner.hansen@gmail.com | 37abdec | 2009-01-06 14:43:28 +0000 | [diff] [blame] | 364 | // Make sure to also clear the map used in inline fast cases. If we |
| 365 | // do not clear these maps, cached code can keep objects alive |
| 366 | // through the embedded maps. |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 367 | SetTargetAtAddress(address, *initialize_stub()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | |
| 371 | void LoadIC::Clear(Address address, Code* target) { |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 372 | if (target->ic_state() == UNINITIALIZED) return; |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 373 | SetTargetAtAddress(address, *initialize_stub()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | |
| 377 | void StoreIC::Clear(Address address, Code* target) { |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 378 | if (target->ic_state() == UNINITIALIZED) return; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 379 | SetTargetAtAddress(address, |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 380 | (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 381 | ? *initialize_stub_strict() |
| 382 | : *initialize_stub()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 383 | } |
| 384 | |
| 385 | |
| 386 | void KeyedStoreIC::Clear(Address address, Code* target) { |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 387 | if (target->ic_state() == UNINITIALIZED) return; |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 388 | SetTargetAtAddress(address, |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 389 | (Code::GetStrictMode(target->extra_ic_state()) == kStrictMode) |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 390 | ? *initialize_stub_strict() |
| 391 | : *initialize_stub()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 395 | void CompareIC::Clear(Address address, Code* target) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 396 | ASSERT(target->major_key() == CodeStub::CompareIC); |
| 397 | CompareIC::State handler_state; |
| 398 | Token::Value op; |
| 399 | ICCompareStub::DecodeMinorKey(target->stub_info(), NULL, NULL, |
| 400 | &handler_state, &op); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 401 | // Only clear CompareICs that can retain objects. |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 402 | if (handler_state != KNOWN_OBJECT) return; |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 403 | SetTargetAtAddress(address, GetRawUninitialized(op)); |
| 404 | PatchInlinedSmiCode(address, DISABLE_INLINED_SMI_CHECK); |
| 405 | } |
| 406 | |
| 407 | |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 408 | static bool HasInterceptorGetter(JSObject* object) { |
| 409 | return !object->GetNamedInterceptor()->getter()->IsUndefined(); |
| 410 | } |
| 411 | |
| 412 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 413 | static void LookupForRead(Handle<Object> object, |
| 414 | Handle<String> name, |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 415 | LookupResult* lookup) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 416 | // Skip all the objects with named interceptors, but |
| 417 | // without actual getter. |
| 418 | while (true) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 419 | object->Lookup(*name, lookup); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 420 | // Besides normal conditions (property not found or it's not |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 421 | // an interceptor), bail out if lookup is not cacheable: we won't |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 422 | // be able to IC it anyway and regular lookup should work fine. |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 423 | if (!lookup->IsInterceptor() || !lookup->IsCacheable()) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 424 | return; |
| 425 | } |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 426 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 427 | Handle<JSObject> holder(lookup->holder()); |
| 428 | if (HasInterceptorGetter(*holder)) { |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 429 | return; |
| 430 | } |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 431 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 432 | holder->LocalLookupRealNamedProperty(*name, lookup); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 433 | if (lookup->IsFound()) { |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 434 | ASSERT(!lookup->IsInterceptor()); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 435 | return; |
| 436 | } |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 437 | |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 438 | Handle<Object> proto(holder->GetPrototype(), name->GetIsolate()); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 439 | if (proto->IsNull()) { |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 440 | ASSERT(!lookup->IsFound()); |
kasperl@chromium.org | e959c18 | 2009-07-27 08:59:04 +0000 | [diff] [blame] | 441 | return; |
| 442 | } |
| 443 | |
| 444 | object = proto; |
| 445 | } |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 449 | Handle<Object> CallICBase::TryCallAsFunction(Handle<Object> object) { |
| 450 | Handle<Object> delegate = Execution::GetFunctionDelegate(object); |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 451 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 452 | if (delegate->IsJSFunction() && !object->IsJSFunctionProxy()) { |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 453 | // Patch the receiver and use the delegate as the function to |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 454 | // invoke. This is used for invoking objects as if they were functions. |
| 455 | const int argc = target()->arguments_count(); |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 456 | StackFrameLocator locator(isolate()); |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 457 | JavaScriptFrame* frame = locator.FindJavaScriptFrame(0); |
| 458 | int index = frame->ComputeExpressionsCount() - (argc + 1); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 459 | frame->SetExpression(index, *object); |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 460 | } |
| 461 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 462 | return delegate; |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 463 | } |
| 464 | |
whesse@chromium.org | 2c186ca | 2010-06-16 11:32:39 +0000 | [diff] [blame] | 465 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 466 | void CallICBase::ReceiverToObjectIfRequired(Handle<Object> callee, |
| 467 | Handle<Object> object) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 468 | while (callee->IsJSFunctionProxy()) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 469 | callee = Handle<Object>(JSFunctionProxy::cast(*callee)->call_trap(), |
| 470 | isolate()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 471 | } |
| 472 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 473 | if (callee->IsJSFunction()) { |
| 474 | Handle<JSFunction> function = Handle<JSFunction>::cast(callee); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 475 | if (!function->shared()->is_classic_mode() || function->IsBuiltin()) { |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 476 | // Do not wrap receiver for strict mode functions or for builtins. |
| 477 | return; |
| 478 | } |
| 479 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 480 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 481 | // And only wrap string, number or boolean. |
| 482 | if (object->IsString() || object->IsNumber() || object->IsBoolean()) { |
| 483 | // Change the receiver to the result of calling ToObject on it. |
| 484 | const int argc = this->target()->arguments_count(); |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 485 | StackFrameLocator locator(isolate()); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 486 | JavaScriptFrame* frame = locator.FindJavaScriptFrame(0); |
| 487 | int index = frame->ComputeExpressionsCount() - (argc + 1); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 488 | frame->SetExpression(index, *isolate()->factory()->ToObject(object)); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 489 | } |
sgjesse@chromium.org | b302e56 | 2010-02-03 11:26:59 +0000 | [diff] [blame] | 490 | } |
| 491 | |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 492 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 493 | MaybeObject* CallICBase::LoadFunction(State state, |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 494 | Code::ExtraICState extra_ic_state, |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 495 | Handle<Object> object, |
| 496 | Handle<String> name) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 497 | // If the object is undefined or null it's illegal to try to get any |
| 498 | // of its properties; throw a TypeError in that case. |
| 499 | if (object->IsUndefined() || object->IsNull()) { |
| 500 | return TypeError("non_object_property_call", object, name); |
| 501 | } |
| 502 | |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 503 | // Check if the name is trivially convertible to an index and get |
| 504 | // the element if so. |
| 505 | uint32_t index; |
| 506 | if (name->AsArrayIndex(&index)) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 507 | Handle<Object> result = Object::GetElement(object, index); |
| 508 | RETURN_IF_EMPTY_HANDLE(isolate(), result); |
| 509 | if (result->IsJSFunction()) return *result; |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 510 | |
| 511 | // Try to find a suitable function delegate for the object at hand. |
| 512 | result = TryCallAsFunction(result); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 513 | if (result->IsJSFunction()) return *result; |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 514 | |
| 515 | // Otherwise, it will fail in the lookup step. |
| 516 | } |
| 517 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 518 | // Lookup the property in the object. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 519 | LookupResult lookup(isolate()); |
| 520 | LookupForRead(object, name, &lookup); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 521 | |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 522 | if (!lookup.IsFound()) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 523 | // If the object does not have the requested property, check which |
| 524 | // exception we need to throw. |
mvstanton@chromium.org | c47dff5 | 2013-01-23 16:28:41 +0000 | [diff] [blame] | 525 | return IsUndeclaredGlobal(object) |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 526 | ? ReferenceError("not_defined", name) |
| 527 | : TypeError("undefined_method", object, name); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 528 | } |
| 529 | |
| 530 | // Lookup is valid: Update inline cache and stub cache. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 531 | if (FLAG_use_ic) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 532 | UpdateCaches(&lookup, state, extra_ic_state, object, name); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 533 | } |
| 534 | |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 535 | // Get the property. |
| 536 | PropertyAttributes attr; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 537 | Handle<Object> result = |
| 538 | Object::GetProperty(object, object, &lookup, name, &attr); |
| 539 | RETURN_IF_EMPTY_HANDLE(isolate(), result); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 540 | |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 541 | if (lookup.IsInterceptor() && attr == ABSENT) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 542 | // If the object does not have the requested property, check which |
| 543 | // exception we need to throw. |
mvstanton@chromium.org | c47dff5 | 2013-01-23 16:28:41 +0000 | [diff] [blame] | 544 | return IsUndeclaredGlobal(object) |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 545 | ? ReferenceError("not_defined", name) |
| 546 | : TypeError("undefined_method", object, name); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 547 | } |
| 548 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 549 | ASSERT(!result->IsTheHole()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 550 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 551 | // Make receiver an object if the callee requires it. Strict mode or builtin |
| 552 | // functions do not wrap the receiver, non-strict functions and objects |
| 553 | // called as functions do. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 554 | ReceiverToObjectIfRequired(result, object); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 555 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 556 | if (result->IsJSFunction()) { |
| 557 | Handle<JSFunction> function = Handle<JSFunction>::cast(result); |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 558 | #ifdef ENABLE_DEBUGGER_SUPPORT |
christian.plesner.hansen@gmail.com | 37abdec | 2009-01-06 14:43:28 +0000 | [diff] [blame] | 559 | // Handle stepping into a function if step into is active. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 560 | Debug* debug = isolate()->debug(); |
| 561 | if (debug->StepInActive()) { |
christian.plesner.hansen@gmail.com | 37abdec | 2009-01-06 14:43:28 +0000 | [diff] [blame] | 562 | // Protect the result in a handle as the debugger can allocate and might |
| 563 | // cause GC. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 564 | debug->HandleStepIn(function, object, fp(), false); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 565 | } |
ager@chromium.org | 65dad4b | 2009-04-23 08:48:43 +0000 | [diff] [blame] | 566 | #endif |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 567 | return *function; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 568 | } |
| 569 | |
| 570 | // Try to find a suitable function delegate for the object at hand. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 571 | result = TryCallAsFunction(result); |
| 572 | if (result->IsJSFunction()) return *result; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 573 | |
| 574 | return TypeError("property_not_function", object, name); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 575 | } |
| 576 | |
| 577 | |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 578 | bool CallICBase::TryUpdateExtraICState(LookupResult* lookup, |
| 579 | Handle<Object> object, |
| 580 | Code::ExtraICState* extra_ic_state) { |
| 581 | ASSERT(kind_ == Code::CALL_IC); |
| 582 | if (lookup->type() != CONSTANT_FUNCTION) return false; |
| 583 | JSFunction* function = lookup->GetConstantFunction(); |
| 584 | if (!function->shared()->HasBuiltinFunctionId()) return false; |
| 585 | |
| 586 | // Fetch the arguments passed to the called function. |
| 587 | const int argc = target()->arguments_count(); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 588 | Address entry = isolate()->c_entry_fp(isolate()->thread_local_top()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 589 | Address fp = Memory::Address_at(entry + ExitFrameConstants::kCallerFPOffset); |
| 590 | Arguments args(argc + 1, |
| 591 | &Memory::Object_at(fp + |
| 592 | StandardFrameConstants::kCallerSPOffset + |
| 593 | argc * kPointerSize)); |
| 594 | switch (function->shared()->builtin_function_id()) { |
| 595 | case kStringCharCodeAt: |
| 596 | case kStringCharAt: |
| 597 | if (object->IsString()) { |
| 598 | String* string = String::cast(*object); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 599 | // Check there's the right string value or wrapper in the receiver slot. |
| 600 | ASSERT(string == args[0] || string == JSValue::cast(args[0])->value()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 601 | // If we're in the default (fastest) state and the index is |
| 602 | // out of bounds, update the state to record this fact. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 603 | if (StringStubState::decode(*extra_ic_state) == DEFAULT_STRING_STUB && |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 604 | argc >= 1 && args[1]->IsNumber()) { |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 605 | double index = DoubleToInteger(args.number_at(1)); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 606 | if (index < 0 || index >= string->length()) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 607 | *extra_ic_state = |
| 608 | StringStubState::update(*extra_ic_state, |
| 609 | STRING_INDEX_OUT_OF_BOUNDS); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 610 | return true; |
| 611 | } |
| 612 | } |
| 613 | } |
| 614 | break; |
| 615 | default: |
| 616 | return false; |
| 617 | } |
| 618 | return false; |
| 619 | } |
| 620 | |
| 621 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 622 | Handle<Code> CallICBase::ComputeMonomorphicStub(LookupResult* lookup, |
| 623 | State state, |
| 624 | Code::ExtraICState extra_state, |
| 625 | Handle<Object> object, |
| 626 | Handle<String> name) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 627 | int argc = target()->arguments_count(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 628 | Handle<JSObject> holder(lookup->holder()); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 629 | switch (lookup->type()) { |
| 630 | case FIELD: { |
yangguo@chromium.org | eeb44b6 | 2012-11-13 13:56:09 +0000 | [diff] [blame] | 631 | PropertyIndex index = lookup->GetFieldIndex(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 632 | return isolate()->stub_cache()->ComputeCallField( |
| 633 | argc, kind_, extra_state, name, object, holder, index); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 634 | } |
| 635 | case CONSTANT_FUNCTION: { |
| 636 | // Get the constant function and compute the code stub for this |
| 637 | // call; used for rewriting to monomorphic state and making sure |
| 638 | // that the code stub is in the stub cache. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 639 | Handle<JSFunction> function(lookup->GetConstantFunction()); |
| 640 | return isolate()->stub_cache()->ComputeCallConstant( |
| 641 | argc, kind_, extra_state, name, object, holder, function); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 642 | } |
| 643 | case NORMAL: { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 644 | // If we return a null handle, the IC will not be patched. |
| 645 | if (!object->IsJSObject()) return Handle<Code>::null(); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 646 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 647 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 648 | if (holder->IsGlobalObject()) { |
| 649 | Handle<GlobalObject> global = Handle<GlobalObject>::cast(holder); |
| 650 | Handle<JSGlobalPropertyCell> cell(global->GetPropertyCell(lookup)); |
| 651 | if (!cell->value()->IsJSFunction()) return Handle<Code>::null(); |
| 652 | Handle<JSFunction> function(JSFunction::cast(cell->value())); |
| 653 | return isolate()->stub_cache()->ComputeCallGlobal( |
| 654 | argc, kind_, extra_state, name, receiver, global, cell, function); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 655 | } else { |
| 656 | // There is only one shared stub for calling normalized |
| 657 | // properties. It does not traverse the prototype chain, so the |
| 658 | // property must be found in the receiver for the stub to be |
| 659 | // applicable. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 660 | if (!holder.is_identical_to(receiver)) return Handle<Code>::null(); |
| 661 | return isolate()->stub_cache()->ComputeCallNormal( |
| 662 | argc, kind_, extra_state); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 663 | } |
| 664 | break; |
| 665 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 666 | case INTERCEPTOR: |
| 667 | ASSERT(HasInterceptorGetter(*holder)); |
| 668 | return isolate()->stub_cache()->ComputeCallInterceptor( |
| 669 | argc, kind_, extra_state, name, object, holder); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 670 | default: |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 671 | return Handle<Code>::null(); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 672 | } |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 673 | } |
| 674 | |
| 675 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 676 | void CallICBase::UpdateCaches(LookupResult* lookup, |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 677 | State state, |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 678 | Code::ExtraICState extra_ic_state, |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 679 | Handle<Object> object, |
| 680 | Handle<String> name) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 681 | // Bail out if we didn't find a result. |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 682 | if (!lookup->IsProperty() || !lookup->IsCacheable()) return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 683 | |
| 684 | // Compute the number of arguments. |
| 685 | int argc = target()->arguments_count(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 686 | Handle<Code> code; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 687 | if (state == UNINITIALIZED) { |
| 688 | // This is the first time we execute this inline cache. |
| 689 | // Set the target to the pre monomorphic stub to delay |
| 690 | // setting the monomorphic state. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 691 | code = isolate()->stub_cache()->ComputeCallPreMonomorphic( |
| 692 | argc, kind_, extra_ic_state); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 693 | } else if (state == MONOMORPHIC) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 694 | if (kind_ == Code::CALL_IC && |
| 695 | TryUpdateExtraICState(lookup, object, &extra_ic_state)) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 696 | code = ComputeMonomorphicStub(lookup, state, extra_ic_state, |
| 697 | object, name); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 698 | } else if (kind_ == Code::CALL_IC && |
| 699 | TryRemoveInvalidPrototypeDependentStub(target(), |
| 700 | *object, |
| 701 | *name)) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 702 | state = MONOMORPHIC_PROTOTYPE_FAILURE; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 703 | code = ComputeMonomorphicStub(lookup, state, extra_ic_state, |
| 704 | object, name); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 705 | } else { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 706 | code = isolate()->stub_cache()->ComputeCallMegamorphic( |
| 707 | argc, kind_, extra_ic_state); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 708 | } |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 709 | } else { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 710 | code = ComputeMonomorphicStub(lookup, state, extra_ic_state, |
| 711 | object, name); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 712 | } |
| 713 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 714 | // If there's no appropriate stub we simply avoid updating the caches. |
| 715 | if (code.is_null()) return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 716 | |
| 717 | // Patch the call site depending on the state of the cache. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 718 | switch (state) { |
| 719 | case UNINITIALIZED: |
| 720 | case MONOMORPHIC_PROTOTYPE_FAILURE: |
| 721 | case PREMONOMORPHIC: |
| 722 | set_target(*code); |
| 723 | break; |
| 724 | case MONOMORPHIC: |
| 725 | if (code->ic_state() != MONOMORPHIC) { |
| 726 | Map* map = target()->FindFirstMap(); |
| 727 | if (map != NULL) { |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 728 | UpdateMegamorphicCache(map, *name, target()); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 729 | } |
| 730 | } |
| 731 | set_target(*code); |
| 732 | break; |
| 733 | case MEGAMORPHIC: { |
| 734 | // Cache code holding map should be consistent with |
| 735 | // GenerateMonomorphicCacheProbe. It is not the map which holds the stub. |
| 736 | Handle<JSObject> cache_object = object->IsJSObject() |
| 737 | ? Handle<JSObject>::cast(object) |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 738 | : Handle<JSObject>(JSObject::cast(object->GetPrototype(isolate()))); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 739 | // Update the stub cache. |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 740 | UpdateMegamorphicCache(cache_object->map(), *name, *code); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 741 | break; |
| 742 | } |
yangguo@chromium.org | 9768bf1 | 2013-01-11 14:51:07 +0000 | [diff] [blame] | 743 | case DEBUG_STUB: |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 744 | break; |
| 745 | case POLYMORPHIC: |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 746 | case GENERIC: |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 747 | UNREACHABLE(); |
| 748 | break; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 749 | } |
| 750 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 751 | TRACE_IC(kind_ == Code::CALL_IC ? "CallIC" : "KeyedCallIC", |
| 752 | name, state, target()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 756 | MaybeObject* KeyedCallIC::LoadFunction(State state, |
| 757 | Handle<Object> object, |
| 758 | Handle<Object> key) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 759 | if (key->IsInternalizedString()) { |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 760 | return CallICBase::LoadFunction(state, |
| 761 | Code::kNoExtraICState, |
| 762 | object, |
| 763 | Handle<String>::cast(key)); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 764 | } |
| 765 | |
| 766 | if (object->IsUndefined() || object->IsNull()) { |
| 767 | return TypeError("non_object_property_call", object, key); |
| 768 | } |
| 769 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 770 | bool use_ic = FLAG_use_ic && !object->IsAccessCheckNeeded(); |
| 771 | ASSERT(!(use_ic && object->IsJSGlobalProxy())); |
| 772 | |
| 773 | if (use_ic && state != MEGAMORPHIC) { |
ager@chromium.org | 2cc82ae | 2010-06-14 07:35:38 +0000 | [diff] [blame] | 774 | int argc = target()->arguments_count(); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 775 | Handle<Code> stub = isolate()->stub_cache()->ComputeCallMegamorphic( |
| 776 | argc, Code::KEYED_CALL_IC, Code::kNoExtraICState); |
| 777 | if (object->IsJSObject()) { |
| 778 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 779 | if (receiver->elements()->map() == |
| 780 | isolate()->heap()->non_strict_arguments_elements_map()) { |
| 781 | stub = isolate()->stub_cache()->ComputeCallArguments(argc); |
| 782 | } |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 783 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 784 | ASSERT(!stub.is_null()); |
| 785 | set_target(*stub); |
| 786 | TRACE_IC("KeyedCallIC", key, state, target()); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 787 | } |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 788 | |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 789 | Handle<Object> result = GetProperty(isolate(), object, key); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 790 | RETURN_IF_EMPTY_HANDLE(isolate(), result); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 791 | |
| 792 | // Make receiver an object if the callee requires it. Strict mode or builtin |
| 793 | // functions do not wrap the receiver, non-strict functions and objects |
| 794 | // called as functions do. |
| 795 | ReceiverToObjectIfRequired(result, object); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 796 | if (result->IsJSFunction()) return *result; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 797 | |
| 798 | result = TryCallAsFunction(result); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 799 | if (result->IsJSFunction()) return *result; |
| 800 | |
| 801 | return TypeError("property_not_function", object, key); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 805 | MaybeObject* LoadIC::Load(State state, |
| 806 | Handle<Object> object, |
| 807 | Handle<String> name) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 808 | // If the object is undefined or null it's illegal to try to get any |
| 809 | // of its properties; throw a TypeError in that case. |
| 810 | if (object->IsUndefined() || object->IsNull()) { |
| 811 | return TypeError("non_object_property_load", object, name); |
| 812 | } |
| 813 | |
| 814 | if (FLAG_use_ic) { |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 815 | // Use specialized code for getting the length of strings and |
| 816 | // string wrapper objects. The length property of string wrapper |
| 817 | // objects is read-only and therefore always returns the length of |
| 818 | // the underlying string value. See ECMA-262 15.5.5.1. |
| 819 | if ((object->IsString() || object->IsStringWrapper()) && |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 820 | name->Equals(isolate()->heap()->length_string())) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 821 | Handle<Code> stub; |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 822 | if (state == UNINITIALIZED) { |
| 823 | stub = pre_monomorphic_stub(); |
| 824 | } else if (state == PREMONOMORPHIC) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 825 | StringLengthStub string_length_stub(kind(), !object->IsString()); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 826 | stub = string_length_stub.GetCode(isolate()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 827 | } else if (state == MONOMORPHIC && object->IsStringWrapper()) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 828 | StringLengthStub string_length_stub(kind(), true); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 829 | stub = string_length_stub.GetCode(isolate()); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 830 | } else if (state != MEGAMORPHIC) { |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 831 | ASSERT(state != GENERIC); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 832 | stub = megamorphic_stub(); |
| 833 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 834 | if (!stub.is_null()) { |
| 835 | set_target(*stub); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 836 | #ifdef DEBUG |
| 837 | if (FLAG_trace_ic) PrintF("[LoadIC : +#length /string]\n"); |
| 838 | #endif |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 839 | } |
kasperl@chromium.org | 9fe21c6 | 2008-10-28 08:53:51 +0000 | [diff] [blame] | 840 | // Get the string if we have a string wrapper object. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 841 | Handle<Object> string = object->IsJSValue() |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 842 | ? Handle<Object>(Handle<JSValue>::cast(object)->value(), isolate()) |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 843 | : object; |
| 844 | return Smi::FromInt(String::cast(*string)->length()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 845 | } |
| 846 | |
| 847 | // Use specialized code for getting the length of arrays. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 848 | if (object->IsJSArray() && |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 849 | name->Equals(isolate()->heap()->length_string())) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 850 | Handle<Code> stub; |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 851 | if (state == UNINITIALIZED) { |
| 852 | stub = pre_monomorphic_stub(); |
| 853 | } else if (state == PREMONOMORPHIC) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 854 | ArrayLengthStub array_length_stub(kind()); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 855 | stub = array_length_stub.GetCode(isolate()); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 856 | } else if (state != MEGAMORPHIC) { |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 857 | ASSERT(state != GENERIC); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 858 | stub = megamorphic_stub(); |
| 859 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 860 | if (!stub.is_null()) { |
| 861 | set_target(*stub); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 862 | #ifdef DEBUG |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 863 | if (FLAG_trace_ic) PrintF("[LoadIC : +#length /array]\n"); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 864 | #endif |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 865 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 866 | return JSArray::cast(*object)->length(); |
| 867 | } |
| 868 | |
| 869 | // Use specialized code for getting prototype of functions. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 870 | if (object->IsJSFunction() && |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 871 | name->Equals(isolate()->heap()->prototype_string()) && |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 872 | Handle<JSFunction>::cast(object)->should_have_prototype()) { |
| 873 | Handle<Code> stub; |
| 874 | if (state == UNINITIALIZED) { |
| 875 | stub = pre_monomorphic_stub(); |
| 876 | } else if (state == PREMONOMORPHIC) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 877 | FunctionPrototypeStub function_prototype_stub(kind()); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 878 | stub = function_prototype_stub.GetCode(isolate()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 879 | } else if (state != MEGAMORPHIC) { |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 880 | ASSERT(state != GENERIC); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 881 | stub = megamorphic_stub(); |
| 882 | } |
| 883 | if (!stub.is_null()) { |
| 884 | set_target(*stub); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 885 | #ifdef DEBUG |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 886 | if (FLAG_trace_ic) PrintF("[LoadIC : +#prototype /function]\n"); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 887 | #endif |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 888 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 889 | return Accessors::FunctionGetPrototype(*object, 0); |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | // Check if the name is trivially convertible to an index and get |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 894 | // the element or char if so. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 895 | uint32_t index; |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 896 | if (kind() == Code::KEYED_LOAD_IC && name->AsArrayIndex(&index)) { |
| 897 | // Rewrite to the generic keyed load stub. |
| 898 | if (FLAG_use_ic) set_target(*generic_stub()); |
| 899 | return Runtime::GetElementOrCharAt(isolate(), object, index); |
| 900 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 901 | |
| 902 | // Named lookup in the object. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 903 | LookupResult lookup(isolate()); |
| 904 | LookupForRead(object, name, &lookup); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 905 | |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 906 | // If we did not find a property, check if we need to throw an exception. |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 907 | if (!lookup.IsFound()) { |
mvstanton@chromium.org | c47dff5 | 2013-01-23 16:28:41 +0000 | [diff] [blame] | 908 | if (IsUndeclaredGlobal(object)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 909 | return ReferenceError("not_defined", name); |
| 910 | } |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 911 | LOG(isolate(), SuspectReadEvent(*name, *object)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 912 | } |
| 913 | |
| 914 | // Update inline cache and stub cache. |
kmillikin@chromium.org | 5d8f0e6 | 2010-03-24 08:21:20 +0000 | [diff] [blame] | 915 | if (FLAG_use_ic) { |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 916 | UpdateCaches(&lookup, state, object, name); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | PropertyAttributes attr; |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 920 | if (lookup.IsInterceptor() || lookup.IsHandler()) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 921 | // Get the property. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 922 | Handle<Object> result = |
| 923 | Object::GetProperty(object, object, &lookup, name, &attr); |
| 924 | RETURN_IF_EMPTY_HANDLE(isolate(), result); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 925 | // If the property is not present, check if we need to throw an |
| 926 | // exception. |
mvstanton@chromium.org | c47dff5 | 2013-01-23 16:28:41 +0000 | [diff] [blame] | 927 | if (attr == ABSENT && IsUndeclaredGlobal(object)) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 928 | return ReferenceError("not_defined", name); |
| 929 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 930 | return *result; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 931 | } |
| 932 | |
| 933 | // Get the property. |
| 934 | return object->GetProperty(*object, &lookup, *name, &attr); |
| 935 | } |
| 936 | |
| 937 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 938 | static bool AddOneReceiverMapIfMissing(MapHandleList* receiver_maps, |
| 939 | Handle<Map> new_receiver_map) { |
| 940 | ASSERT(!new_receiver_map.is_null()); |
| 941 | for (int current = 0; current < receiver_maps->length(); ++current) { |
| 942 | if (!receiver_maps->at(current).is_null() && |
| 943 | receiver_maps->at(current).is_identical_to(new_receiver_map)) { |
| 944 | return false; |
| 945 | } |
| 946 | } |
| 947 | receiver_maps->Add(new_receiver_map); |
| 948 | return true; |
| 949 | } |
| 950 | |
| 951 | |
| 952 | bool IC::UpdatePolymorphicIC(State state, |
| 953 | StrictModeFlag strict_mode, |
| 954 | Handle<JSObject> receiver, |
| 955 | Handle<String> name, |
| 956 | Handle<Code> code) { |
| 957 | if (code->type() == Code::NORMAL) return false; |
| 958 | if (target()->ic_state() == MONOMORPHIC && |
| 959 | target()->type() == Code::NORMAL) { |
| 960 | return false; |
| 961 | } |
| 962 | MapHandleList receiver_maps; |
| 963 | CodeHandleList handlers; |
| 964 | target()->FindAllMaps(&receiver_maps); |
| 965 | int number_of_maps = receiver_maps.length(); |
| 966 | if (number_of_maps == 0 || number_of_maps >= 4) return false; |
| 967 | |
| 968 | target()->FindAllCode(&handlers, receiver_maps.length()); |
| 969 | |
| 970 | if (!AddOneReceiverMapIfMissing(&receiver_maps, |
| 971 | Handle<Map>(receiver->map()))) { |
| 972 | return false; |
| 973 | } |
| 974 | |
| 975 | handlers.Add(code); |
| 976 | Handle<Code> ic = isolate()->stub_cache()->ComputePolymorphicIC( |
| 977 | &receiver_maps, &handlers, name); |
| 978 | set_target(*ic); |
| 979 | return true; |
| 980 | } |
| 981 | |
| 982 | |
| 983 | void LoadIC::UpdateMonomorphicIC(Handle<JSObject> receiver, |
| 984 | Handle<Code> handler, |
| 985 | Handle<String> name) { |
| 986 | if (handler->type() == Code::NORMAL) return set_target(*handler); |
| 987 | Handle<Code> ic = isolate()->stub_cache()->ComputeMonomorphicIC( |
| 988 | receiver, handler, name); |
| 989 | set_target(*ic); |
| 990 | } |
| 991 | |
| 992 | |
| 993 | void KeyedLoadIC::UpdateMonomorphicIC(Handle<JSObject> receiver, |
| 994 | Handle<Code> handler, |
| 995 | Handle<String> name) { |
| 996 | if (handler->type() == Code::NORMAL) return set_target(*handler); |
| 997 | Handle<Code> ic = isolate()->stub_cache()->ComputeKeyedMonomorphicIC( |
| 998 | receiver, handler, name); |
| 999 | set_target(*ic); |
| 1000 | } |
| 1001 | |
| 1002 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1003 | void IC::PatchCache(State state, |
| 1004 | StrictModeFlag strict_mode, |
| 1005 | Handle<JSObject> receiver, |
| 1006 | Handle<String> name, |
| 1007 | Handle<Code> code) { |
| 1008 | switch (state) { |
| 1009 | case UNINITIALIZED: |
| 1010 | case PREMONOMORPHIC: |
| 1011 | case MONOMORPHIC_PROTOTYPE_FAILURE: |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1012 | UpdateMonomorphicIC(receiver, code, name); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1013 | break; |
| 1014 | case MONOMORPHIC: |
| 1015 | // Only move to megamorphic if the target changes. |
| 1016 | if (target() != *code) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1017 | if (target()->is_load_stub()) { |
| 1018 | if (UpdatePolymorphicIC(state, strict_mode, receiver, name, code)) { |
| 1019 | break; |
| 1020 | } |
| 1021 | } |
| 1022 | // We are transitioning from monomorphic to megamorphic case. Place the |
| 1023 | // stub compiled for the receiver into stub cache. |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1024 | Map* map = target()->FindFirstMap(); |
| 1025 | if (map != NULL) { |
| 1026 | UpdateMegamorphicCache(map, *name, target()); |
| 1027 | } |
| 1028 | UpdateMegamorphicCache(receiver->map(), *name, *code); |
| 1029 | set_target((strict_mode == kStrictMode) |
| 1030 | ? *megamorphic_stub_strict() |
| 1031 | : *megamorphic_stub()); |
| 1032 | } |
| 1033 | break; |
| 1034 | case MEGAMORPHIC: |
| 1035 | // Update the stub cache. |
| 1036 | UpdateMegamorphicCache(receiver->map(), *name, *code); |
| 1037 | break; |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1038 | case POLYMORPHIC: |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1039 | if (target()->is_load_stub()) { |
| 1040 | if (UpdatePolymorphicIC(state, strict_mode, receiver, name, code)) { |
| 1041 | break; |
| 1042 | } |
| 1043 | MapHandleList receiver_maps; |
| 1044 | CodeHandleList handlers; |
| 1045 | target()->FindAllMaps(&receiver_maps); |
| 1046 | target()->FindAllCode(&handlers, receiver_maps.length()); |
| 1047 | for (int i = 0; i < receiver_maps.length(); i++) { |
| 1048 | UpdateMegamorphicCache(*receiver_maps.at(i), *name, *handlers.at(i)); |
| 1049 | } |
| 1050 | UpdateMegamorphicCache(receiver->map(), *name, *code); |
| 1051 | set_target(*megamorphic_stub()); |
| 1052 | } else { |
| 1053 | // When trying to patch a polymorphic keyed load/store element stub |
| 1054 | // with anything other than another polymorphic stub, go generic. |
| 1055 | set_target((strict_mode == kStrictMode) |
| 1056 | ? *generic_stub_strict() |
| 1057 | : *generic_stub()); |
| 1058 | } |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1059 | break; |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1060 | case DEBUG_STUB: |
| 1061 | break; |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1062 | case GENERIC: |
| 1063 | UNREACHABLE(); |
| 1064 | break; |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1065 | } |
| 1066 | } |
| 1067 | |
| 1068 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1069 | static void GetReceiverMapsForStub(Handle<Code> stub, |
| 1070 | MapHandleList* result) { |
| 1071 | ASSERT(stub->is_inline_cache_stub()); |
| 1072 | switch (stub->ic_state()) { |
| 1073 | case MONOMORPHIC: { |
| 1074 | Map* map = stub->FindFirstMap(); |
| 1075 | if (map != NULL) { |
| 1076 | result->Add(Handle<Map>(map)); |
| 1077 | } |
| 1078 | break; |
| 1079 | } |
| 1080 | case POLYMORPHIC: { |
| 1081 | AssertNoAllocation no_allocation; |
| 1082 | int mask = RelocInfo::ModeMask(RelocInfo::EMBEDDED_OBJECT); |
| 1083 | for (RelocIterator it(*stub, mask); !it.done(); it.next()) { |
| 1084 | RelocInfo* info = it.rinfo(); |
| 1085 | Handle<Object> object(info->target_object(), stub->GetIsolate()); |
| 1086 | if (object->IsString()) break; |
| 1087 | ASSERT(object->IsMap()); |
| 1088 | AddOneReceiverMapIfMissing(result, Handle<Map>::cast(object)); |
| 1089 | } |
| 1090 | break; |
| 1091 | } |
| 1092 | case MEGAMORPHIC: |
| 1093 | break; |
| 1094 | case UNINITIALIZED: |
| 1095 | case PREMONOMORPHIC: |
| 1096 | case MONOMORPHIC_PROTOTYPE_FAILURE: |
| 1097 | case GENERIC: |
| 1098 | case DEBUG_STUB: |
| 1099 | UNREACHABLE(); |
| 1100 | break; |
| 1101 | } |
| 1102 | } |
| 1103 | |
| 1104 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1105 | void LoadIC::UpdateCaches(LookupResult* lookup, |
| 1106 | State state, |
| 1107 | Handle<Object> object, |
| 1108 | Handle<String> name) { |
ricow@chromium.org | c9c8082 | 2010-04-21 08:22:37 +0000 | [diff] [blame] | 1109 | // Bail out if the result is not cacheable. |
| 1110 | if (!lookup->IsCacheable()) return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1111 | |
| 1112 | // Loading properties from values is not common, so don't try to |
| 1113 | // deal with non-JS objects here. |
| 1114 | if (!object->IsJSObject()) return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1115 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1116 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1117 | Handle<Code> code; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1118 | if (state == UNINITIALIZED) { |
| 1119 | // This is the first time we execute this inline cache. |
| 1120 | // Set the target to the pre monomorphic stub to delay |
| 1121 | // setting the monomorphic state. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1122 | code = pre_monomorphic_stub(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1123 | } else { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1124 | code = ComputeLoadHandler(lookup, receiver, name); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1125 | if (code.is_null()) return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1126 | } |
| 1127 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1128 | PatchCache(state, kNonStrictMode, receiver, name, code); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1129 | TRACE_IC("LoadIC", name, state, target()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1130 | } |
| 1131 | |
| 1132 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1133 | void IC::UpdateMegamorphicCache(Map* map, String* name, Code* code) { |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1134 | // Cache code holding map should be consistent with |
| 1135 | // GenerateMonomorphicCacheProbe. |
| 1136 | isolate()->stub_cache()->Set(name, map, code); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1137 | } |
| 1138 | |
| 1139 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1140 | Handle<Code> LoadIC::ComputeLoadHandler(LookupResult* lookup, |
| 1141 | Handle<JSObject> receiver, |
| 1142 | Handle<String> name) { |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1143 | if (!lookup->IsProperty()) { |
| 1144 | // Nonexistent property. The result is undefined. |
| 1145 | return isolate()->stub_cache()->ComputeLoadNonexistent(name, receiver); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1146 | } |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1147 | |
| 1148 | // Compute monomorphic stub. |
| 1149 | Handle<JSObject> holder(lookup->holder()); |
| 1150 | switch (lookup->type()) { |
| 1151 | case FIELD: |
| 1152 | return isolate()->stub_cache()->ComputeLoadField( |
| 1153 | name, receiver, holder, lookup->GetFieldIndex()); |
| 1154 | case CONSTANT_FUNCTION: { |
| 1155 | Handle<JSFunction> constant(lookup->GetConstantFunction()); |
| 1156 | return isolate()->stub_cache()->ComputeLoadConstant( |
| 1157 | name, receiver, holder, constant); |
| 1158 | } |
| 1159 | case NORMAL: |
| 1160 | if (holder->IsGlobalObject()) { |
| 1161 | Handle<GlobalObject> global = Handle<GlobalObject>::cast(holder); |
| 1162 | Handle<JSGlobalPropertyCell> cell(global->GetPropertyCell(lookup)); |
| 1163 | return isolate()->stub_cache()->ComputeLoadGlobal( |
| 1164 | name, receiver, global, cell, lookup->IsDontDelete()); |
| 1165 | } |
| 1166 | // There is only one shared stub for loading normalized |
| 1167 | // properties. It does not traverse the prototype chain, so the |
| 1168 | // property must be found in the receiver for the stub to be |
| 1169 | // applicable. |
| 1170 | if (!holder.is_identical_to(receiver)) break; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1171 | return isolate()->stub_cache()->ComputeLoadNormal(name, receiver); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1172 | case CALLBACKS: { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 1173 | Handle<Object> callback(lookup->GetCallbackObject(), isolate()); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1174 | if (callback->IsExecutableAccessorInfo()) { |
| 1175 | Handle<ExecutableAccessorInfo> info = |
| 1176 | Handle<ExecutableAccessorInfo>::cast(callback); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1177 | if (v8::ToCData<Address>(info->getter()) == 0) break; |
| 1178 | if (!info->IsCompatibleReceiver(*receiver)) break; |
| 1179 | return isolate()->stub_cache()->ComputeLoadCallback( |
| 1180 | name, receiver, holder, info); |
| 1181 | } else if (callback->IsAccessorPair()) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 1182 | Handle<Object> getter(Handle<AccessorPair>::cast(callback)->getter(), |
| 1183 | isolate()); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1184 | if (!getter->IsJSFunction()) break; |
| 1185 | if (holder->IsGlobalObject()) break; |
| 1186 | if (!holder->HasFastProperties()) break; |
| 1187 | return isolate()->stub_cache()->ComputeLoadViaGetter( |
| 1188 | name, receiver, holder, Handle<JSFunction>::cast(getter)); |
| 1189 | } |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1190 | // TODO(dcarney): Handle correctly. |
| 1191 | if (callback->IsDeclaredAccessorInfo()) break; |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1192 | ASSERT(callback->IsForeign()); |
| 1193 | // No IC support for old-style native accessors. |
| 1194 | break; |
| 1195 | } |
| 1196 | case INTERCEPTOR: |
| 1197 | ASSERT(HasInterceptorGetter(*holder)); |
| 1198 | return isolate()->stub_cache()->ComputeLoadInterceptor( |
| 1199 | name, receiver, holder); |
| 1200 | default: |
| 1201 | break; |
| 1202 | } |
| 1203 | return Handle<Code>::null(); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1204 | } |
| 1205 | |
| 1206 | |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 1207 | static Handle<Object> TryConvertKey(Handle<Object> key, Isolate* isolate) { |
| 1208 | // This helper implements a few common fast cases for converting |
| 1209 | // non-smi keys of keyed loads/stores to a smi or a string. |
| 1210 | if (key->IsHeapNumber()) { |
| 1211 | double value = Handle<HeapNumber>::cast(key)->value(); |
| 1212 | if (isnan(value)) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1213 | key = isolate->factory()->nan_string(); |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 1214 | } else { |
| 1215 | int int_value = FastD2I(value); |
| 1216 | if (value == int_value && Smi::IsValid(int_value)) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 1217 | key = Handle<Smi>(Smi::FromInt(int_value), isolate); |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 1218 | } |
| 1219 | } |
| 1220 | } else if (key->IsUndefined()) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1221 | key = isolate->factory()->undefined_string(); |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 1222 | } |
| 1223 | return key; |
| 1224 | } |
| 1225 | |
| 1226 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1227 | Handle<Code> KeyedLoadIC::LoadElementStub(Handle<JSObject> receiver) { |
| 1228 | State ic_state = target()->ic_state(); |
| 1229 | |
| 1230 | // Don't handle megamorphic property accesses for INTERCEPTORS or CALLBACKS |
| 1231 | // via megamorphic stubs, since they don't have a map in their relocation info |
| 1232 | // and so the stubs can't be harvested for the object needed for a map check. |
| 1233 | if (target()->type() != Code::NORMAL) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1234 | TRACE_GENERIC_IC(isolate(), "KeyedIC", "non-NORMAL target type"); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1235 | return generic_stub(); |
| 1236 | } |
| 1237 | |
| 1238 | Handle<Map> receiver_map(receiver->map()); |
| 1239 | MapHandleList target_receiver_maps; |
| 1240 | if (ic_state == UNINITIALIZED || ic_state == PREMONOMORPHIC) { |
| 1241 | // Optimistically assume that ICs that haven't reached the MONOMORPHIC state |
| 1242 | // yet will do so and stay there. |
| 1243 | return isolate()->stub_cache()->ComputeKeyedLoadElement(receiver_map); |
| 1244 | } |
| 1245 | |
| 1246 | if (target() == *string_stub()) { |
| 1247 | target_receiver_maps.Add(isolate()->factory()->string_map()); |
| 1248 | } else { |
| 1249 | GetReceiverMapsForStub(Handle<Code>(target()), &target_receiver_maps); |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1250 | if (target_receiver_maps.length() == 0) { |
| 1251 | return isolate()->stub_cache()->ComputeKeyedLoadElement(receiver_map); |
| 1252 | } |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1253 | } |
| 1254 | |
| 1255 | // The first time a receiver is seen that is a transitioned version of the |
| 1256 | // previous monomorphic receiver type, assume the new ElementsKind is the |
| 1257 | // monomorphic type. This benefits global arrays that only transition |
| 1258 | // once, and all call sites accessing them are faster if they remain |
| 1259 | // monomorphic. If this optimistic assumption is not true, the IC will |
| 1260 | // miss again and it will become polymorphic and support both the |
| 1261 | // untransitioned and transitioned maps. |
| 1262 | if (ic_state == MONOMORPHIC && |
| 1263 | IsMoreGeneralElementsKindTransition( |
| 1264 | target_receiver_maps.at(0)->elements_kind(), |
| 1265 | receiver->GetElementsKind())) { |
| 1266 | return isolate()->stub_cache()->ComputeKeyedLoadElement(receiver_map); |
| 1267 | } |
| 1268 | |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1269 | ASSERT(ic_state != GENERIC); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1270 | |
| 1271 | // Determine the list of receiver maps that this call site has seen, |
| 1272 | // adding the map that was just encountered. |
| 1273 | if (!AddOneReceiverMapIfMissing(&target_receiver_maps, receiver_map)) { |
| 1274 | // If the miss wasn't due to an unseen map, a polymorphic stub |
| 1275 | // won't help, use the generic stub. |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1276 | TRACE_GENERIC_IC(isolate(), "KeyedIC", "same map added twice"); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1277 | return generic_stub(); |
| 1278 | } |
| 1279 | |
| 1280 | // If the maximum number of receiver maps has been exceeded, use the generic |
| 1281 | // version of the IC. |
| 1282 | if (target_receiver_maps.length() > kMaxKeyedPolymorphism) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1283 | TRACE_GENERIC_IC(isolate(), "KeyedIC", "max polymorph exceeded"); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1284 | return generic_stub(); |
| 1285 | } |
| 1286 | |
| 1287 | return isolate()->stub_cache()->ComputeLoadElementPolymorphic( |
| 1288 | &target_receiver_maps); |
| 1289 | } |
| 1290 | |
| 1291 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 1292 | MaybeObject* KeyedLoadIC::Load(State state, |
| 1293 | Handle<Object> object, |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1294 | Handle<Object> key, |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1295 | ICMissMode miss_mode) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1296 | // Check for values that can be converted into an internalized string directly |
| 1297 | // or is representable as a smi. |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 1298 | key = TryConvertKey(key, isolate()); |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1299 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1300 | if (key->IsInternalizedString()) { |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1301 | return LoadIC::Load(state, object, Handle<String>::cast(key)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1302 | } |
| 1303 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1304 | bool use_ic = FLAG_use_ic && !object->IsAccessCheckNeeded(); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1305 | ASSERT(!(use_ic && object->IsJSGlobalProxy())); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1306 | |
christian.plesner.hansen@gmail.com | 37abdec | 2009-01-06 14:43:28 +0000 | [diff] [blame] | 1307 | if (use_ic) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1308 | Handle<Code> stub = generic_stub(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1309 | if (miss_mode != MISS_FORCE_GENERIC) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1310 | if (object->IsString() && key->IsNumber()) { |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1311 | if (state == UNINITIALIZED) { |
| 1312 | stub = string_stub(); |
| 1313 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1314 | } else if (object->IsJSObject()) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1315 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 1316 | if (receiver->elements()->map() == |
| 1317 | isolate()->heap()->non_strict_arguments_elements_map()) { |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1318 | stub = non_strict_arguments_stub(); |
| 1319 | } else if (receiver->HasIndexedInterceptor()) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1320 | stub = indexed_interceptor_stub(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1321 | } else if (key->IsSmi() && (target() != *non_strict_arguments_stub())) { |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1322 | stub = LoadElementStub(receiver); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1323 | } |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1324 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 1325 | } else { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1326 | TRACE_GENERIC_IC(isolate(), "KeyedLoadIC", "force generic"); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1327 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1328 | ASSERT(!stub.is_null()); |
| 1329 | set_target(*stub); |
| 1330 | TRACE_IC("KeyedLoadIC", key, state, target()); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1331 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1332 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1333 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1334 | return Runtime::GetObjectProperty(isolate(), object, key); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1335 | } |
| 1336 | |
| 1337 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1338 | Handle<Code> KeyedLoadIC::ComputeLoadHandler(LookupResult* lookup, |
| 1339 | Handle<JSObject> receiver, |
| 1340 | Handle<String> name) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1341 | // Bail out if we didn't find a result. |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1342 | if (!lookup->IsProperty()) return Handle<Code>::null(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1343 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1344 | // Compute a monomorphic stub. |
| 1345 | Handle<JSObject> holder(lookup->holder()); |
| 1346 | switch (lookup->type()) { |
| 1347 | case FIELD: |
| 1348 | return isolate()->stub_cache()->ComputeKeyedLoadField( |
| 1349 | name, receiver, holder, lookup->GetFieldIndex()); |
| 1350 | case CONSTANT_FUNCTION: { |
| 1351 | Handle<JSFunction> constant(lookup->GetConstantFunction()); |
| 1352 | return isolate()->stub_cache()->ComputeKeyedLoadConstant( |
| 1353 | name, receiver, holder, constant); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1354 | } |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1355 | case CALLBACKS: { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 1356 | Handle<Object> callback_object(lookup->GetCallbackObject(), isolate()); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1357 | // TODO(dcarney): Handle DeclaredAccessorInfo correctly. |
| 1358 | if (!callback_object->IsExecutableAccessorInfo()) break; |
| 1359 | Handle<ExecutableAccessorInfo> callback = |
| 1360 | Handle<ExecutableAccessorInfo>::cast(callback_object); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1361 | if (v8::ToCData<Address>(callback->getter()) == 0) break; |
| 1362 | if (!callback->IsCompatibleReceiver(*receiver)) break; |
| 1363 | return isolate()->stub_cache()->ComputeKeyedLoadCallback( |
| 1364 | name, receiver, holder, callback); |
| 1365 | } |
| 1366 | case INTERCEPTOR: |
| 1367 | ASSERT(HasInterceptorGetter(lookup->holder())); |
| 1368 | return isolate()->stub_cache()->ComputeKeyedLoadInterceptor( |
| 1369 | name, receiver, holder); |
| 1370 | default: |
| 1371 | // Always rewrite to the generic case so that we do not |
| 1372 | // repeatedly try to rewrite. |
| 1373 | return generic_stub(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1374 | } |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1375 | return Handle<Code>::null(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1376 | } |
| 1377 | |
| 1378 | |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1379 | static bool StoreICableLookup(LookupResult* lookup) { |
| 1380 | // Bail out if we didn't find a result. |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 1381 | if (!lookup->IsFound()) return false; |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1382 | |
jkummerow@chromium.org | 05ed9dd | 2012-01-23 14:42:48 +0000 | [diff] [blame] | 1383 | // Bail out if inline caching is not allowed. |
| 1384 | if (!lookup->IsCacheable()) return false; |
| 1385 | |
| 1386 | // If the property is read-only, we leave the IC in its current state. |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1387 | if (lookup->IsTransition()) { |
| 1388 | return !lookup->GetTransitionDetails().IsReadOnly(); |
| 1389 | } |
| 1390 | return !lookup->IsReadOnly(); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1391 | } |
| 1392 | |
| 1393 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1394 | static bool LookupForWrite(Handle<JSObject> receiver, |
| 1395 | Handle<String> name, |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 1396 | LookupResult* lookup) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1397 | receiver->LocalLookup(*name, lookup); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 1398 | if (!lookup->IsFound()) { |
| 1399 | receiver->map()->LookupTransition(*receiver, *name, lookup); |
| 1400 | } |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1401 | if (!StoreICableLookup(lookup)) { |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 1402 | // 2nd chance: There can be accessors somewhere in the prototype chain. |
svenpanne@chromium.org | 619781a | 2012-07-05 08:22:44 +0000 | [diff] [blame] | 1403 | receiver->Lookup(*name, lookup); |
jkummerow@chromium.org | 78502a9 | 2012-09-06 13:50:42 +0000 | [diff] [blame] | 1404 | return lookup->IsPropertyCallbacks() && StoreICableLookup(lookup); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1405 | } |
| 1406 | |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 1407 | if (lookup->IsInterceptor() && |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1408 | receiver->GetNamedInterceptor()->setter()->IsUndefined()) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1409 | receiver->LocalLookupRealNamedProperty(*name, lookup); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1410 | return StoreICableLookup(lookup); |
ager@chromium.org | 5aa501c | 2009-06-23 07:57:28 +0000 | [diff] [blame] | 1411 | } |
| 1412 | |
| 1413 | return true; |
| 1414 | } |
| 1415 | |
| 1416 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1417 | MaybeObject* StoreIC::Store(State state, |
| 1418 | StrictModeFlag strict_mode, |
| 1419 | Handle<Object> object, |
| 1420 | Handle<String> name, |
| 1421 | Handle<Object> value, |
| 1422 | JSReceiver::StoreFromKeyed store_mode) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1423 | // Handle proxies. |
| 1424 | if (object->IsJSProxy()) { |
| 1425 | return JSProxy::cast(*object)-> |
| 1426 | SetProperty(*name, *value, NONE, strict_mode); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 1427 | } |
| 1428 | |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1429 | // If the object is undefined or null it's illegal to try to set any |
| 1430 | // properties on it; throw a TypeError in that case. |
| 1431 | if (object->IsUndefined() || object->IsNull()) { |
| 1432 | return TypeError("non_object_property_store", object, name); |
| 1433 | } |
| 1434 | |
| 1435 | // The length property of string values is read-only. Throw in strict mode. |
| 1436 | if (strict_mode == kStrictMode && object->IsString() && |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1437 | name->Equals(isolate()->heap()->length_string())) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1438 | return TypeError("strict_read_only_property", object, name); |
| 1439 | } |
| 1440 | |
| 1441 | // Ignore other stores where the receiver is not a JSObject. |
| 1442 | // TODO(1475): Must check prototype chains of object wrappers. |
| 1443 | if (!object->IsJSObject()) return *value; |
| 1444 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1445 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 1446 | |
| 1447 | // Check if the given name is an array index. |
| 1448 | uint32_t index; |
| 1449 | if (name->AsArrayIndex(&index)) { |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 1450 | Handle<Object> result = |
yangguo@chromium.org | ab30bb8 | 2012-02-24 14:41:46 +0000 | [diff] [blame] | 1451 | JSObject::SetElement(receiver, index, value, NONE, strict_mode); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1452 | RETURN_IF_EMPTY_HANDLE(isolate(), result); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1453 | return *value; |
| 1454 | } |
| 1455 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 1456 | // Observed objects are always modified through the runtime. |
| 1457 | if (FLAG_harmony_observation && receiver->map()->is_observed()) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1458 | return receiver->SetProperty(*name, *value, NONE, strict_mode, store_mode); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 1459 | } |
| 1460 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 1461 | // Use specialized code for setting the length of arrays with fast |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1462 | // properties. Slow properties might indicate redefinition of the length |
| 1463 | // property. |
| 1464 | if (FLAG_use_ic && |
| 1465 | receiver->IsJSArray() && |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1466 | name->Equals(isolate()->heap()->length_string()) && |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 1467 | Handle<JSArray>::cast(receiver)->AllowsSetElementsLength() && |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1468 | receiver->HasFastProperties()) { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1469 | Handle<Code> stub = |
| 1470 | StoreArrayLengthStub(kind(), strict_mode).GetCode(isolate()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1471 | set_target(*stub); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1472 | TRACE_IC("StoreIC", name, state, *stub); |
| 1473 | return receiver->SetProperty(*name, *value, NONE, strict_mode, store_mode); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1474 | } |
| 1475 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1476 | if (receiver->IsJSGlobalProxy()) { |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1477 | if (FLAG_use_ic && kind() != Code::KEYED_STORE_IC) { |
| 1478 | // Generate a generic stub that goes to the runtime when we see a global |
| 1479 | // proxy as receiver. |
| 1480 | Handle<Code> stub = (strict_mode == kStrictMode) |
| 1481 | ? global_proxy_stub_strict() |
| 1482 | : global_proxy_stub(); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1483 | set_target(*stub); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1484 | TRACE_IC("StoreIC", name, state, *stub); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1485 | } |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1486 | return receiver->SetProperty(*name, *value, NONE, strict_mode, store_mode); |
| 1487 | } |
| 1488 | |
| 1489 | LookupResult lookup(isolate()); |
| 1490 | if (LookupForWrite(receiver, name, &lookup)) { |
| 1491 | if (FLAG_use_ic) { |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1492 | UpdateCaches(&lookup, state, strict_mode, receiver, name, value); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1493 | } |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1494 | } else if (strict_mode == kStrictMode && |
| 1495 | !(lookup.IsProperty() && lookup.IsReadOnly()) && |
| 1496 | IsUndeclaredGlobal(object)) { |
mvstanton@chromium.org | c47dff5 | 2013-01-23 16:28:41 +0000 | [diff] [blame] | 1497 | // Strict mode doesn't allow setting non-existent global property. |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1498 | return ReferenceError("not_defined", name); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1499 | } |
| 1500 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1501 | // Set the property. |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 1502 | return receiver->SetProperty(*name, *value, NONE, strict_mode, store_mode); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1503 | } |
| 1504 | |
| 1505 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1506 | void StoreIC::UpdateCaches(LookupResult* lookup, |
| 1507 | State state, |
| 1508 | StrictModeFlag strict_mode, |
| 1509 | Handle<JSObject> receiver, |
| 1510 | Handle<String> name, |
| 1511 | Handle<Object> value) { |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1512 | ASSERT(!receiver->IsJSGlobalProxy()); |
ager@chromium.org | eadaf22 | 2009-06-16 09:43:10 +0000 | [diff] [blame] | 1513 | ASSERT(StoreICableLookup(lookup)); |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 1514 | ASSERT(lookup->IsFound()); |
| 1515 | |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1516 | // These are not cacheable, so we never see such LookupResults here. |
yangguo@chromium.org | de0db00 | 2012-06-22 13:44:28 +0000 | [diff] [blame] | 1517 | ASSERT(!lookup->IsHandler()); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1518 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1519 | Handle<Code> code = |
| 1520 | ComputeStoreMonomorphic(lookup, strict_mode, receiver, name); |
| 1521 | if (code.is_null()) return; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1522 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1523 | PatchCache(state, strict_mode, receiver, name, code); |
| 1524 | TRACE_IC("StoreIC", name, state, target()); |
| 1525 | } |
| 1526 | |
| 1527 | |
| 1528 | Handle<Code> StoreIC::ComputeStoreMonomorphic(LookupResult* lookup, |
| 1529 | StrictModeFlag strict_mode, |
| 1530 | Handle<JSObject> receiver, |
| 1531 | Handle<String> name) { |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1532 | Handle<JSObject> holder(lookup->holder()); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1533 | switch (lookup->type()) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1534 | case FIELD: |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1535 | return isolate()->stub_cache()->ComputeStoreField( |
yangguo@chromium.org | eeb44b6 | 2012-11-13 13:56:09 +0000 | [diff] [blame] | 1536 | name, receiver, lookup->GetFieldIndex().field_index(), |
| 1537 | Handle<Map>::null(), strict_mode); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1538 | case NORMAL: |
kmillikin@chromium.org | 69ea396 | 2010-07-05 11:01:40 +0000 | [diff] [blame] | 1539 | if (receiver->IsGlobalObject()) { |
| 1540 | // The stub generated for the global object picks the value directly |
| 1541 | // from the property cell. So the property must be directly on the |
| 1542 | // global object. |
| 1543 | Handle<GlobalObject> global = Handle<GlobalObject>::cast(receiver); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1544 | Handle<JSGlobalPropertyCell> cell(global->GetPropertyCell(lookup)); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1545 | return isolate()->stub_cache()->ComputeStoreGlobal( |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1546 | name, global, cell, strict_mode); |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 1547 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1548 | if (!holder.is_identical_to(receiver)) break; |
| 1549 | return isolate()->stub_cache()->ComputeStoreNormal(strict_mode); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1550 | case CALLBACKS: { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 1551 | Handle<Object> callback(lookup->GetCallbackObject(), isolate()); |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1552 | if (callback->IsExecutableAccessorInfo()) { |
| 1553 | Handle<ExecutableAccessorInfo> info = |
| 1554 | Handle<ExecutableAccessorInfo>::cast(callback); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1555 | if (v8::ToCData<Address>(info->setter()) == 0) break; |
| 1556 | if (!holder->HasFastProperties()) break; |
| 1557 | if (!info->IsCompatibleReceiver(*receiver)) break; |
| 1558 | return isolate()->stub_cache()->ComputeStoreCallback( |
yangguo@chromium.org | 355cfd1 | 2012-08-29 15:32:24 +0000 | [diff] [blame] | 1559 | name, receiver, holder, info, strict_mode); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1560 | } else if (callback->IsAccessorPair()) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 1561 | Handle<Object> setter(Handle<AccessorPair>::cast(callback)->setter(), |
| 1562 | isolate()); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1563 | if (!setter->IsJSFunction()) break; |
| 1564 | if (holder->IsGlobalObject()) break; |
| 1565 | if (!holder->HasFastProperties()) break; |
| 1566 | return isolate()->stub_cache()->ComputeStoreViaSetter( |
svenpanne@chromium.org | 619781a | 2012-07-05 08:22:44 +0000 | [diff] [blame] | 1567 | name, receiver, holder, Handle<JSFunction>::cast(setter), |
| 1568 | strict_mode); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1569 | } |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1570 | // TODO(dcarney): Handle correctly. |
| 1571 | if (callback->IsDeclaredAccessorInfo()) break; |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1572 | ASSERT(callback->IsForeign()); |
| 1573 | // No IC support for old-style native accessors. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1574 | break; |
| 1575 | } |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1576 | case INTERCEPTOR: |
kasperl@chromium.org | 2abc450 | 2009-07-02 07:00:29 +0000 | [diff] [blame] | 1577 | ASSERT(!receiver->GetNamedInterceptor()->setter()->IsUndefined()); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1578 | return isolate()->stub_cache()->ComputeStoreInterceptor( |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1579 | name, receiver, strict_mode); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1580 | case CONSTANT_FUNCTION: |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1581 | break; |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1582 | case TRANSITION: { |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 1583 | Handle<Map> transition(lookup->GetTransitionTarget()); |
| 1584 | int descriptor = transition->LastAdded(); |
| 1585 | |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1586 | DescriptorArray* target_descriptors = transition->instance_descriptors(); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1587 | PropertyDetails details = target_descriptors->GetDetails(descriptor); |
| 1588 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1589 | if (details.type() != FIELD || details.attributes() != NONE) break; |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1590 | |
| 1591 | int field_index = target_descriptors->GetFieldIndex(descriptor); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1592 | return isolate()->stub_cache()->ComputeStoreField( |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1593 | name, receiver, field_index, transition, strict_mode); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1594 | } |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 1595 | case NONEXISTENT: |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1596 | case HANDLER: |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1597 | UNREACHABLE(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1598 | break; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1599 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1600 | return Handle<Code>::null(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1601 | } |
| 1602 | |
| 1603 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1604 | Handle<Code> KeyedStoreIC::StoreElementStub(Handle<JSObject> receiver, |
| 1605 | StubKind stub_kind, |
| 1606 | StrictModeFlag strict_mode) { |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1607 | State ic_state = target()->ic_state(); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1608 | KeyedAccessGrowMode grow_mode = IsGrowStubKind(stub_kind) |
| 1609 | ? ALLOW_JSARRAY_GROWTH |
| 1610 | : DO_NOT_ALLOW_JSARRAY_GROWTH; |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1611 | |
| 1612 | // Don't handle megamorphic property accesses for INTERCEPTORS or CALLBACKS |
| 1613 | // via megamorphic stubs, since they don't have a map in their relocation info |
| 1614 | // and so the stubs can't be harvested for the object needed for a map check. |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 1615 | if (target()->type() != Code::NORMAL) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1616 | TRACE_GENERIC_IC(isolate(), "KeyedIC", "non-NORMAL target type"); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1617 | return strict_mode == kStrictMode ? generic_stub_strict() : generic_stub(); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1618 | } |
| 1619 | |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1620 | Handle<Map> receiver_map(receiver->map()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1621 | MapHandleList target_receiver_maps; |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1622 | if (ic_state == UNINITIALIZED || ic_state == PREMONOMORPHIC) { |
| 1623 | // Optimistically assume that ICs that haven't reached the MONOMORPHIC state |
| 1624 | // yet will do so and stay there. |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1625 | Handle<Map> monomorphic_map = ComputeTransitionedMap(receiver, stub_kind); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1626 | stub_kind = GetNoTransitionStubKind(stub_kind); |
| 1627 | return isolate()->stub_cache()->ComputeKeyedStoreElement( |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1628 | monomorphic_map, stub_kind, strict_mode, grow_mode); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1629 | } |
| 1630 | |
| 1631 | GetReceiverMapsForStub(Handle<Code>(target()), &target_receiver_maps); |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1632 | if (target_receiver_maps.length() == 0) { |
| 1633 | // Optimistically assume that ICs that haven't reached the MONOMORPHIC state |
| 1634 | // yet will do so and stay there. |
| 1635 | stub_kind = GetNoTransitionStubKind(stub_kind); |
| 1636 | return isolate()->stub_cache()->ComputeKeyedStoreElement( |
| 1637 | receiver_map, stub_kind, strict_mode, grow_mode); |
| 1638 | } |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1639 | // The first time a receiver is seen that is a transitioned version of the |
| 1640 | // previous monomorphic receiver type, assume the new ElementsKind is the |
| 1641 | // monomorphic type. This benefits global arrays that only transition |
| 1642 | // once, and all call sites accessing them are faster if they remain |
| 1643 | // monomorphic. If this optimistic assumption is not true, the IC will |
| 1644 | // miss again and it will become polymorphic and support both the |
| 1645 | // untransitioned and transitioned maps. |
| 1646 | if (ic_state == MONOMORPHIC && |
| 1647 | IsTransitionStubKind(stub_kind) && |
| 1648 | IsMoreGeneralElementsKindTransition( |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 1649 | target_receiver_maps.at(0)->elements_kind(), |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1650 | receiver->GetElementsKind())) { |
| 1651 | Handle<Map> monomorphic_map = ComputeTransitionedMap(receiver, stub_kind); |
| 1652 | ASSERT(*monomorphic_map != *receiver_map); |
| 1653 | stub_kind = GetNoTransitionStubKind(stub_kind); |
| 1654 | return isolate()->stub_cache()->ComputeKeyedStoreElement( |
| 1655 | monomorphic_map, stub_kind, strict_mode, grow_mode); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1656 | } |
| 1657 | |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 1658 | ASSERT(ic_state != GENERIC); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1659 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1660 | bool map_added = |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1661 | AddOneReceiverMapIfMissing(&target_receiver_maps, receiver_map); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1662 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1663 | if (IsTransitionStubKind(stub_kind)) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1664 | Handle<Map> new_map = ComputeTransitionedMap(receiver, stub_kind); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1665 | map_added |= AddOneReceiverMapIfMissing(&target_receiver_maps, new_map); |
| 1666 | } |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1667 | |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1668 | if (!map_added) { |
| 1669 | // If the miss wasn't due to an unseen map, a polymorphic stub |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1670 | // won't help, use the generic stub. |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1671 | TRACE_GENERIC_IC(isolate(), "KeyedIC", "same map added twice"); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1672 | return strict_mode == kStrictMode ? generic_stub_strict() : generic_stub(); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1673 | } |
| 1674 | |
jkummerow@chromium.org | e297f59 | 2011-06-08 10:05:15 +0000 | [diff] [blame] | 1675 | // If the maximum number of receiver maps has been exceeded, use the generic |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1676 | // version of the IC. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1677 | if (target_receiver_maps.length() > kMaxKeyedPolymorphism) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1678 | TRACE_GENERIC_IC(isolate(), "KeyedIC", "max polymorph exceeded"); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1679 | return strict_mode == kStrictMode ? generic_stub_strict() : generic_stub(); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1680 | } |
| 1681 | |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1682 | if ((Code::GetKeyedAccessGrowMode(target()->extra_ic_state()) == |
| 1683 | ALLOW_JSARRAY_GROWTH)) { |
| 1684 | grow_mode = ALLOW_JSARRAY_GROWTH; |
| 1685 | } |
| 1686 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1687 | return isolate()->stub_cache()->ComputeStoreElementPolymorphic( |
| 1688 | &target_receiver_maps, grow_mode, strict_mode); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1689 | } |
| 1690 | |
| 1691 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1692 | Handle<Map> KeyedStoreIC::ComputeTransitionedMap(Handle<JSObject> receiver, |
| 1693 | StubKind stub_kind) { |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1694 | switch (stub_kind) { |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1695 | case STORE_TRANSITION_SMI_TO_OBJECT: |
| 1696 | case STORE_TRANSITION_DOUBLE_TO_OBJECT: |
| 1697 | case STORE_AND_GROW_TRANSITION_SMI_TO_OBJECT: |
| 1698 | case STORE_AND_GROW_TRANSITION_DOUBLE_TO_OBJECT: |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1699 | return JSObject::GetElementsTransitionMap(receiver, FAST_ELEMENTS); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1700 | case STORE_TRANSITION_SMI_TO_DOUBLE: |
| 1701 | case STORE_AND_GROW_TRANSITION_SMI_TO_DOUBLE: |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1702 | return JSObject::GetElementsTransitionMap(receiver, FAST_DOUBLE_ELEMENTS); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1703 | case STORE_TRANSITION_HOLEY_SMI_TO_OBJECT: |
| 1704 | case STORE_TRANSITION_HOLEY_DOUBLE_TO_OBJECT: |
| 1705 | case STORE_AND_GROW_TRANSITION_HOLEY_SMI_TO_OBJECT: |
| 1706 | case STORE_AND_GROW_TRANSITION_HOLEY_DOUBLE_TO_OBJECT: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1707 | return JSObject::GetElementsTransitionMap(receiver, |
| 1708 | FAST_HOLEY_ELEMENTS); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1709 | case STORE_TRANSITION_HOLEY_SMI_TO_DOUBLE: |
| 1710 | case STORE_AND_GROW_TRANSITION_HOLEY_SMI_TO_DOUBLE: |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1711 | return JSObject::GetElementsTransitionMap(receiver, |
| 1712 | FAST_HOLEY_DOUBLE_ELEMENTS); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1713 | case STORE_NO_TRANSITION: |
| 1714 | case STORE_AND_GROW_NO_TRANSITION: |
hpayer@chromium.org | 7c3372b | 2013-02-13 17:26:04 +0000 | [diff] [blame] | 1715 | return Handle<Map>(receiver->map()); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1716 | } |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1717 | return Handle<Map>::null(); |
rossberg@chromium.org | b4b2aa6 | 2011-10-13 09:49:59 +0000 | [diff] [blame] | 1718 | } |
| 1719 | |
| 1720 | |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1721 | KeyedStoreIC::StubKind KeyedStoreIC::GetStubKind(Handle<JSObject> receiver, |
| 1722 | Handle<Object> key, |
| 1723 | Handle<Object> value) { |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1724 | ASSERT(key->IsSmi()); |
| 1725 | int index = Smi::cast(*key)->value(); |
| 1726 | bool allow_growth = receiver->IsJSArray() && |
| 1727 | JSArray::cast(*receiver)->length()->IsSmi() && |
| 1728 | index >= Smi::cast(JSArray::cast(*receiver)->length())->value(); |
| 1729 | |
| 1730 | if (allow_growth) { |
| 1731 | // Handle growing array in stub if necessary. |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1732 | if (receiver->HasFastSmiElements()) { |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1733 | if (value->IsHeapNumber()) { |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1734 | if (receiver->HasFastHoleyElements()) { |
| 1735 | return STORE_AND_GROW_TRANSITION_HOLEY_SMI_TO_DOUBLE; |
| 1736 | } else { |
| 1737 | return STORE_AND_GROW_TRANSITION_SMI_TO_DOUBLE; |
| 1738 | } |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1739 | } |
| 1740 | if (value->IsHeapObject()) { |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1741 | if (receiver->HasFastHoleyElements()) { |
| 1742 | return STORE_AND_GROW_TRANSITION_HOLEY_SMI_TO_OBJECT; |
| 1743 | } else { |
| 1744 | return STORE_AND_GROW_TRANSITION_SMI_TO_OBJECT; |
| 1745 | } |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1746 | } |
| 1747 | } else if (receiver->HasFastDoubleElements()) { |
| 1748 | if (!value->IsSmi() && !value->IsHeapNumber()) { |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1749 | if (receiver->HasFastHoleyElements()) { |
| 1750 | return STORE_AND_GROW_TRANSITION_HOLEY_DOUBLE_TO_OBJECT; |
| 1751 | } else { |
| 1752 | return STORE_AND_GROW_TRANSITION_DOUBLE_TO_OBJECT; |
| 1753 | } |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1754 | } |
| 1755 | } |
| 1756 | return STORE_AND_GROW_NO_TRANSITION; |
| 1757 | } else { |
| 1758 | // Handle only in-bounds elements accesses. |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1759 | if (receiver->HasFastSmiElements()) { |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1760 | if (value->IsHeapNumber()) { |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1761 | if (receiver->HasFastHoleyElements()) { |
| 1762 | return STORE_TRANSITION_HOLEY_SMI_TO_DOUBLE; |
| 1763 | } else { |
| 1764 | return STORE_TRANSITION_SMI_TO_DOUBLE; |
| 1765 | } |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1766 | } else if (value->IsHeapObject()) { |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1767 | if (receiver->HasFastHoleyElements()) { |
| 1768 | return STORE_TRANSITION_HOLEY_SMI_TO_OBJECT; |
| 1769 | } else { |
| 1770 | return STORE_TRANSITION_SMI_TO_OBJECT; |
| 1771 | } |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1772 | } |
| 1773 | } else if (receiver->HasFastDoubleElements()) { |
| 1774 | if (!value->IsSmi() && !value->IsHeapNumber()) { |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 1775 | if (receiver->HasFastHoleyElements()) { |
| 1776 | return STORE_TRANSITION_HOLEY_DOUBLE_TO_OBJECT; |
| 1777 | } else { |
| 1778 | return STORE_TRANSITION_DOUBLE_TO_OBJECT; |
| 1779 | } |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1780 | } |
| 1781 | } |
| 1782 | return STORE_NO_TRANSITION; |
| 1783 | } |
| 1784 | } |
| 1785 | |
| 1786 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 1787 | MaybeObject* KeyedStoreIC::Store(State state, |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 1788 | StrictModeFlag strict_mode, |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 1789 | Handle<Object> object, |
| 1790 | Handle<Object> key, |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1791 | Handle<Object> value, |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1792 | ICMissMode miss_mode) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1793 | // Check for values that can be converted into an internalized string directly |
| 1794 | // or is representable as a smi. |
jkummerow@chromium.org | 28faa98 | 2012-04-13 09:58:30 +0000 | [diff] [blame] | 1795 | key = TryConvertKey(key, isolate()); |
| 1796 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 1797 | if (key->IsInternalizedString()) { |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1798 | return StoreIC::Store(state, |
| 1799 | strict_mode, |
| 1800 | object, |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1801 | Handle<String>::cast(key), |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1802 | value, |
| 1803 | JSReceiver::MAY_BE_STORE_FROM_KEYED); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1804 | } |
| 1805 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 1806 | bool use_ic = FLAG_use_ic && !object->IsAccessCheckNeeded() && |
| 1807 | !(FLAG_harmony_observation && object->IsJSObject() && |
| 1808 | JSObject::cast(*object)->map()->is_observed()); |
kasperl@chromium.org | 5a8ca6c | 2008-10-23 13:57:19 +0000 | [diff] [blame] | 1809 | ASSERT(!(use_ic && object->IsJSGlobalProxy())); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1810 | |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1811 | if (use_ic) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1812 | Handle<Code> stub = (strict_mode == kStrictMode) |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1813 | ? generic_stub_strict() |
| 1814 | : generic_stub(); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1815 | if (miss_mode != MISS_FORCE_GENERIC) { |
| 1816 | if (object->IsJSObject()) { |
| 1817 | Handle<JSObject> receiver = Handle<JSObject>::cast(object); |
| 1818 | if (receiver->elements()->map() == |
| 1819 | isolate()->heap()->non_strict_arguments_elements_map()) { |
| 1820 | stub = non_strict_arguments_stub(); |
| 1821 | } else if (key->IsSmi() && (target() != *non_strict_arguments_stub())) { |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1822 | StubKind stub_kind = GetStubKind(receiver, key, value); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1823 | stub = StoreElementStub(receiver, stub_kind, strict_mode); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1824 | } |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1825 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1826 | } else { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1827 | TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "force generic"); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1828 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1829 | ASSERT(!stub.is_null()); |
| 1830 | set_target(*stub); |
| 1831 | TRACE_IC("KeyedStoreIC", key, state, target()); |
ager@chromium.org | 3811b43 | 2009-10-28 14:53:37 +0000 | [diff] [blame] | 1832 | } |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1833 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1834 | return Runtime::SetObjectProperty( |
| 1835 | isolate(), object , key, value, NONE, strict_mode); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1836 | } |
| 1837 | |
| 1838 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1839 | Handle<Code> KeyedStoreIC::ComputeStoreMonomorphic(LookupResult* lookup, |
| 1840 | StrictModeFlag strict_mode, |
| 1841 | Handle<JSObject> receiver, |
| 1842 | Handle<String> name) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1843 | // If the property has a non-field type allowing map transitions |
| 1844 | // where there is extra room in the object, we leave the IC in its |
| 1845 | // current state. |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1846 | switch (lookup->type()) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1847 | case FIELD: |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1848 | return isolate()->stub_cache()->ComputeKeyedStoreField( |
yangguo@chromium.org | eeb44b6 | 2012-11-13 13:56:09 +0000 | [diff] [blame] | 1849 | name, receiver, lookup->GetFieldIndex().field_index(), |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1850 | Handle<Map>::null(), strict_mode); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1851 | case TRANSITION: { |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 1852 | Handle<Map> transition(lookup->GetTransitionTarget()); |
yangguo@chromium.org | 304cc33 | 2012-07-24 07:59:48 +0000 | [diff] [blame] | 1853 | int descriptor = transition->LastAdded(); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1854 | |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1855 | DescriptorArray* target_descriptors = transition->instance_descriptors(); |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1856 | PropertyDetails details = target_descriptors->GetDetails(descriptor); |
| 1857 | |
| 1858 | if (details.type() == FIELD && details.attributes() == NONE) { |
| 1859 | int field_index = target_descriptors->GetFieldIndex(descriptor); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1860 | return isolate()->stub_cache()->ComputeKeyedStoreField( |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1861 | name, receiver, field_index, transition, strict_mode); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1862 | } |
| 1863 | // fall through. |
yangguo@chromium.org | 99aa490 | 2012-07-06 16:21:55 +0000 | [diff] [blame] | 1864 | } |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1865 | case NORMAL: |
| 1866 | case CONSTANT_FUNCTION: |
| 1867 | case CALLBACKS: |
| 1868 | case INTERCEPTOR: |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1869 | // Always rewrite to the generic case so that we do not |
| 1870 | // repeatedly try to rewrite. |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1871 | return (strict_mode == kStrictMode) |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 1872 | ? generic_stub_strict() |
| 1873 | : generic_stub(); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1874 | case HANDLER: |
jkummerow@chromium.org | 7a6fc81 | 2012-06-27 11:12:38 +0000 | [diff] [blame] | 1875 | case NONEXISTENT: |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 1876 | UNREACHABLE(); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1877 | break; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1878 | } |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 1879 | return Handle<Code>::null(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1880 | } |
| 1881 | |
| 1882 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1883 | #undef TRACE_IC |
| 1884 | |
| 1885 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1886 | // ---------------------------------------------------------------------------- |
| 1887 | // Static IC stub generators. |
| 1888 | // |
| 1889 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1890 | // Used from ic-<arch>.cc. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1891 | RUNTIME_FUNCTION(MaybeObject*, CallIC_Miss) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1892 | HandleScope scope(isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1893 | ASSERT(args.length() == 2); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1894 | CallIC ic(isolate); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1895 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
erik.corry@gmail.com | 0511e24 | 2011-01-19 11:11:08 +0000 | [diff] [blame] | 1896 | Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); |
| 1897 | MaybeObject* maybe_result = ic.LoadFunction(state, |
| 1898 | extra_ic_state, |
| 1899 | args.at<Object>(0), |
| 1900 | args.at<String>(1)); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1901 | JSFunction* raw_function; |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1902 | if (!maybe_result->To(&raw_function)) return maybe_result; |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 1903 | |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1904 | // The first time the inline cache is updated may be the first time the |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1905 | // function it references gets called. If the function is lazily compiled |
| 1906 | // then the first call will trigger a compilation. We check for this case |
kasperl@chromium.org | 71affb5 | 2009-05-26 05:44:31 +0000 | [diff] [blame] | 1907 | // and we do the compilation immediately, instead of waiting for the stub |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1908 | // currently attached to the JSFunction object to trigger compilation. |
| 1909 | if (raw_function->is_compiled()) return raw_function; |
| 1910 | |
| 1911 | Handle<JSFunction> function(raw_function); |
| 1912 | JSFunction::CompileLazy(function, CLEAR_EXCEPTION); |
| 1913 | return *function; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1914 | } |
| 1915 | |
| 1916 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1917 | // Used from ic-<arch>.cc. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1918 | RUNTIME_FUNCTION(MaybeObject*, KeyedCallIC_Miss) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1919 | HandleScope scope(isolate); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1920 | ASSERT(args.length() == 2); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1921 | KeyedCallIC ic(isolate); |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1922 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1923 | MaybeObject* maybe_result = |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1924 | ic.LoadFunction(state, args.at<Object>(0), args.at<Object>(1)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1925 | // Result could be a function or a failure. |
| 1926 | JSFunction* raw_function = NULL; |
| 1927 | if (!maybe_result->To(&raw_function)) return maybe_result; |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1928 | |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1929 | if (raw_function->is_compiled()) return raw_function; |
| 1930 | |
| 1931 | Handle<JSFunction> function(raw_function); |
| 1932 | JSFunction::CompileLazy(function, CLEAR_EXCEPTION); |
| 1933 | return *function; |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1934 | } |
| 1935 | |
| 1936 | |
| 1937 | // Used from ic-<arch>.cc. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1938 | RUNTIME_FUNCTION(MaybeObject*, LoadIC_Miss) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1939 | HandleScope scope(isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1940 | ASSERT(args.length() == 2); |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 1941 | LoadIC ic(IC::NO_EXTRA_FRAME, isolate); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1942 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1943 | return ic.Load(state, args.at<Object>(0), args.at<String>(1)); |
| 1944 | } |
| 1945 | |
| 1946 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1947 | // Used from ic-<arch>.cc |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1948 | RUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_Miss) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1949 | HandleScope scope(isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1950 | ASSERT(args.length() == 2); |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 1951 | KeyedLoadIC ic(IC::NO_EXTRA_FRAME, isolate); |
| 1952 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
| 1953 | return ic.Load(state, args.at<Object>(0), args.at<Object>(1), MISS); |
| 1954 | } |
| 1955 | |
| 1956 | |
| 1957 | RUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_MissFromStubFailure) { |
| 1958 | HandleScope scope(isolate); |
| 1959 | ASSERT(args.length() == 2); |
| 1960 | KeyedLoadIC ic(IC::EXTRA_CALL_FRAME, isolate); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1961 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1962 | return ic.Load(state, args.at<Object>(0), args.at<Object>(1), MISS); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1963 | } |
| 1964 | |
| 1965 | |
| 1966 | RUNTIME_FUNCTION(MaybeObject*, KeyedLoadIC_MissForceGeneric) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 1967 | HandleScope scope(isolate); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1968 | ASSERT(args.length() == 2); |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 1969 | KeyedLoadIC ic(IC::NO_EXTRA_FRAME, isolate); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1970 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1971 | return ic.Load(state, |
| 1972 | args.at<Object>(0), |
| 1973 | args.at<Object>(1), |
| 1974 | MISS_FORCE_GENERIC); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1975 | } |
| 1976 | |
| 1977 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 1978 | // Used from ic-<arch>.cc. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1979 | RUNTIME_FUNCTION(MaybeObject*, StoreIC_Miss) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 1980 | HandleScope scope(isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1981 | ASSERT(args.length() == 3); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1982 | StoreIC ic(isolate); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 1983 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 1984 | Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 1985 | return ic.Store(state, |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 1986 | Code::GetStrictMode(extra_ic_state), |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 1987 | args.at<Object>(0), |
| 1988 | args.at<String>(1), |
| 1989 | args.at<Object>(2)); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 1990 | } |
| 1991 | |
| 1992 | |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 1993 | RUNTIME_FUNCTION(MaybeObject*, StoreIC_ArrayLength) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 1994 | NoHandleAllocation nha(isolate); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1995 | |
| 1996 | ASSERT(args.length() == 2); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 1997 | JSArray* receiver = JSArray::cast(args[0]); |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 1998 | Object* len = args[1]; |
| 1999 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2000 | // The generated code should filter out non-Smis before we get here. |
| 2001 | ASSERT(len->IsSmi()); |
| 2002 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2003 | #ifdef DEBUG |
| 2004 | // The length property has to be a writable callback property. |
| 2005 | LookupResult debug_lookup(isolate); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2006 | receiver->LocalLookup(isolate->heap()->length_string(), &debug_lookup); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 2007 | ASSERT(debug_lookup.IsPropertyCallbacks() && !debug_lookup.IsReadOnly()); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 2008 | #endif |
| 2009 | |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2010 | Object* result; |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 2011 | MaybeObject* maybe_result = receiver->SetElementsLength(len); |
| 2012 | if (!maybe_result->To(&result)) return maybe_result; |
| 2013 | |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 2014 | return len; |
ager@chromium.org | 5c83825 | 2010-02-19 08:53:10 +0000 | [diff] [blame] | 2015 | } |
| 2016 | |
| 2017 | |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 2018 | // Extend storage is called in a store inline cache when |
| 2019 | // it is necessary to extend the properties array of a |
| 2020 | // JSObject. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2021 | RUNTIME_FUNCTION(MaybeObject*, SharedStoreIC_ExtendStorage) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 2022 | NoHandleAllocation na(isolate); |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 2023 | ASSERT(args.length() == 3); |
| 2024 | |
| 2025 | // Convert the parameters |
| 2026 | JSObject* object = JSObject::cast(args[0]); |
| 2027 | Map* transition = Map::cast(args[1]); |
| 2028 | Object* value = args[2]; |
| 2029 | |
| 2030 | // Check the object has run out out property space. |
| 2031 | ASSERT(object->HasFastProperties()); |
| 2032 | ASSERT(object->map()->unused_property_fields() == 0); |
| 2033 | |
| 2034 | // Expand the properties array. |
| 2035 | FixedArray* old_storage = object->properties(); |
| 2036 | int new_unused = transition->unused_property_fields(); |
| 2037 | int new_size = old_storage->length() + new_unused + 1; |
lrn@chromium.org | 303ada7 | 2010-10-27 09:33:13 +0000 | [diff] [blame] | 2038 | Object* result; |
| 2039 | { MaybeObject* maybe_result = old_storage->CopySize(new_size); |
| 2040 | if (!maybe_result->ToObject(&result)) return maybe_result; |
| 2041 | } |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 2042 | FixedArray* new_storage = FixedArray::cast(result); |
| 2043 | new_storage->set(old_storage->length(), value); |
| 2044 | |
ager@chromium.org | 3291210 | 2009-01-16 10:38:43 +0000 | [diff] [blame] | 2045 | // Set the new property value and do the map transition. |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 2046 | object->set_properties(new_storage); |
| 2047 | object->set_map(transition); |
| 2048 | |
| 2049 | // Return the stored value. |
| 2050 | return value; |
| 2051 | } |
| 2052 | |
| 2053 | |
lrn@chromium.org | 1af7e1b | 2010-06-07 11:12:01 +0000 | [diff] [blame] | 2054 | // Used from ic-<arch>.cc. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2055 | RUNTIME_FUNCTION(MaybeObject*, KeyedStoreIC_Miss) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2056 | HandleScope scope(isolate); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2057 | ASSERT(args.length() == 3); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2058 | KeyedStoreIC ic(isolate); |
ager@chromium.org | ce5e87b | 2010-03-10 10:24:18 +0000 | [diff] [blame] | 2059 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2060 | Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); |
| 2061 | return ic.Store(state, |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 2062 | Code::GetStrictMode(extra_ic_state), |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2063 | args.at<Object>(0), |
| 2064 | args.at<Object>(1), |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2065 | args.at<Object>(2), |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2066 | MISS); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2067 | } |
| 2068 | |
| 2069 | |
| 2070 | RUNTIME_FUNCTION(MaybeObject*, KeyedStoreIC_Slow) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 2071 | NoHandleAllocation na(isolate); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2072 | ASSERT(args.length() == 3); |
| 2073 | KeyedStoreIC ic(isolate); |
| 2074 | Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); |
| 2075 | Handle<Object> object = args.at<Object>(0); |
| 2076 | Handle<Object> key = args.at<Object>(1); |
| 2077 | Handle<Object> value = args.at<Object>(2); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 2078 | StrictModeFlag strict_mode = Code::GetStrictMode(extra_ic_state); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2079 | return Runtime::SetObjectProperty(isolate, |
| 2080 | object, |
| 2081 | key, |
| 2082 | value, |
| 2083 | NONE, |
| 2084 | strict_mode); |
| 2085 | } |
| 2086 | |
| 2087 | |
| 2088 | RUNTIME_FUNCTION(MaybeObject*, KeyedStoreIC_MissForceGeneric) { |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 2089 | HandleScope scope(isolate); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2090 | ASSERT(args.length() == 3); |
| 2091 | KeyedStoreIC ic(isolate); |
| 2092 | IC::State state = IC::StateFrom(ic.target(), args[0], args[1]); |
| 2093 | Code::ExtraICState extra_ic_state = ic.target()->extra_ic_state(); |
| 2094 | return ic.Store(state, |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 2095 | Code::GetStrictMode(extra_ic_state), |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2096 | args.at<Object>(0), |
| 2097 | args.at<Object>(1), |
| 2098 | args.at<Object>(2), |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2099 | MISS_FORCE_GENERIC); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2100 | } |
| 2101 | |
| 2102 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2103 | void UnaryOpIC::patch(Code* code) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2104 | set_target(code); |
| 2105 | } |
| 2106 | |
| 2107 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2108 | const char* UnaryOpIC::GetName(TypeInfo type_info) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2109 | switch (type_info) { |
| 2110 | case UNINITIALIZED: return "Uninitialized"; |
| 2111 | case SMI: return "Smi"; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2112 | case NUMBER: return "Number"; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2113 | case GENERIC: return "Generic"; |
| 2114 | default: return "Invalid"; |
| 2115 | } |
| 2116 | } |
| 2117 | |
| 2118 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2119 | UnaryOpIC::State UnaryOpIC::ToState(TypeInfo type_info) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2120 | switch (type_info) { |
| 2121 | case UNINITIALIZED: |
| 2122 | return ::v8::internal::UNINITIALIZED; |
| 2123 | case SMI: |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2124 | case NUMBER: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2125 | return MONOMORPHIC; |
| 2126 | case GENERIC: |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 2127 | return ::v8::internal::GENERIC; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2128 | } |
| 2129 | UNREACHABLE(); |
| 2130 | return ::v8::internal::UNINITIALIZED; |
| 2131 | } |
| 2132 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2133 | UnaryOpIC::TypeInfo UnaryOpIC::GetTypeInfo(Handle<Object> operand) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2134 | ::v8::internal::TypeInfo operand_type = |
| 2135 | ::v8::internal::TypeInfo::TypeFromValue(operand); |
| 2136 | if (operand_type.IsSmi()) { |
| 2137 | return SMI; |
| 2138 | } else if (operand_type.IsNumber()) { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2139 | return NUMBER; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2140 | } else { |
| 2141 | return GENERIC; |
| 2142 | } |
| 2143 | } |
| 2144 | |
| 2145 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2146 | UnaryOpIC::TypeInfo UnaryOpIC::ComputeNewType( |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2147 | TypeInfo current_type, |
| 2148 | TypeInfo previous_type) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2149 | switch (previous_type) { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2150 | case UNINITIALIZED: |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2151 | return current_type; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2152 | case SMI: |
| 2153 | return (current_type == GENERIC) ? GENERIC : NUMBER; |
| 2154 | case NUMBER: |
| 2155 | return GENERIC; |
| 2156 | case GENERIC: |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2157 | // We should never do patching if we are in GENERIC state. |
| 2158 | UNREACHABLE(); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2159 | return GENERIC; |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2160 | } |
| 2161 | UNREACHABLE(); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2162 | return GENERIC; |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2163 | } |
| 2164 | |
| 2165 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2166 | void BinaryOpIC::patch(Code* code) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2167 | set_target(code); |
| 2168 | } |
| 2169 | |
| 2170 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2171 | const char* BinaryOpIC::GetName(TypeInfo type_info) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2172 | switch (type_info) { |
| 2173 | case UNINITIALIZED: return "Uninitialized"; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2174 | case SMI: return "Smi"; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2175 | case INT32: return "Int32"; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2176 | case NUMBER: return "Number"; |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2177 | case ODDBALL: return "Oddball"; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2178 | case STRING: return "String"; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2179 | case GENERIC: return "Generic"; |
| 2180 | default: return "Invalid"; |
| 2181 | } |
| 2182 | } |
| 2183 | |
| 2184 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2185 | BinaryOpIC::State BinaryOpIC::ToState(TypeInfo type_info) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2186 | switch (type_info) { |
| 2187 | case UNINITIALIZED: |
| 2188 | return ::v8::internal::UNINITIALIZED; |
| 2189 | case SMI: |
| 2190 | case INT32: |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2191 | case NUMBER: |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2192 | case ODDBALL: |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2193 | case STRING: |
| 2194 | return MONOMORPHIC; |
| 2195 | case GENERIC: |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 2196 | return ::v8::internal::GENERIC; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2197 | } |
| 2198 | UNREACHABLE(); |
| 2199 | return ::v8::internal::UNINITIALIZED; |
| 2200 | } |
| 2201 | |
| 2202 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2203 | RUNTIME_FUNCTION(MaybeObject*, UnaryOp_Patch) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2204 | ASSERT(args.length() == 4); |
| 2205 | |
| 2206 | HandleScope scope(isolate); |
| 2207 | Handle<Object> operand = args.at<Object>(0); |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 2208 | Token::Value op = static_cast<Token::Value>(args.smi_at(1)); |
| 2209 | UnaryOverwriteMode mode = static_cast<UnaryOverwriteMode>(args.smi_at(2)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2210 | UnaryOpIC::TypeInfo previous_type = |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2211 | static_cast<UnaryOpIC::TypeInfo>(args.smi_at(3)); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2212 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2213 | UnaryOpIC::TypeInfo type = UnaryOpIC::GetTypeInfo(operand); |
| 2214 | type = UnaryOpIC::ComputeNewType(type, previous_type); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2215 | |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 2216 | UnaryOpStub stub(op, mode, type); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2217 | Handle<Code> code = stub.GetCode(isolate); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2218 | if (!code.is_null()) { |
| 2219 | if (FLAG_trace_ic) { |
yangguo@chromium.org | 9768bf1 | 2013-01-11 14:51:07 +0000 | [diff] [blame] | 2220 | PrintF("[UnaryOpIC in "); |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 2221 | JavaScriptFrame::PrintTop(isolate, stdout, false, true); |
yangguo@chromium.org | 9768bf1 | 2013-01-11 14:51:07 +0000 | [diff] [blame] | 2222 | PrintF(" (%s->%s)#%s @ %p]\n", |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2223 | UnaryOpIC::GetName(previous_type), |
| 2224 | UnaryOpIC::GetName(type), |
yangguo@chromium.org | 9768bf1 | 2013-01-11 14:51:07 +0000 | [diff] [blame] | 2225 | Token::Name(op), |
| 2226 | static_cast<void*>(*code)); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2227 | } |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2228 | UnaryOpIC ic(isolate); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2229 | ic.patch(*code); |
| 2230 | } |
| 2231 | |
| 2232 | Handle<JSBuiltinsObject> builtins = Handle<JSBuiltinsObject>( |
| 2233 | isolate->thread_local_top()->context_->builtins(), isolate); |
| 2234 | Object* builtin = NULL; // Initialization calms down the compiler. |
| 2235 | switch (op) { |
| 2236 | case Token::SUB: |
| 2237 | builtin = builtins->javascript_builtin(Builtins::UNARY_MINUS); |
| 2238 | break; |
| 2239 | case Token::BIT_NOT: |
| 2240 | builtin = builtins->javascript_builtin(Builtins::BIT_NOT); |
| 2241 | break; |
| 2242 | default: |
| 2243 | UNREACHABLE(); |
| 2244 | } |
| 2245 | |
| 2246 | Handle<JSFunction> builtin_function(JSFunction::cast(builtin), isolate); |
| 2247 | |
| 2248 | bool caught_exception; |
| 2249 | Handle<Object> result = Execution::Call(builtin_function, operand, 0, NULL, |
| 2250 | &caught_exception); |
| 2251 | if (caught_exception) { |
| 2252 | return Failure::Exception(); |
| 2253 | } |
| 2254 | return *result; |
| 2255 | } |
| 2256 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2257 | |
| 2258 | static BinaryOpIC::TypeInfo TypeInfoFromValue(Handle<Object> value, |
| 2259 | Token::Value op) { |
| 2260 | ::v8::internal::TypeInfo type = |
| 2261 | ::v8::internal::TypeInfo::TypeFromValue(value); |
| 2262 | if (type.IsSmi()) return BinaryOpIC::SMI; |
| 2263 | if (type.IsInteger32()) { |
| 2264 | if (kSmiValueSize == 32) return BinaryOpIC::SMI; |
| 2265 | return BinaryOpIC::INT32; |
| 2266 | } |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2267 | if (type.IsNumber()) return BinaryOpIC::NUMBER; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2268 | if (type.IsString()) return BinaryOpIC::STRING; |
| 2269 | if (value->IsUndefined()) { |
| 2270 | if (op == Token::BIT_AND || |
| 2271 | op == Token::BIT_OR || |
| 2272 | op == Token::BIT_XOR || |
| 2273 | op == Token::SAR || |
| 2274 | op == Token::SHL || |
| 2275 | op == Token::SHR) { |
| 2276 | if (kSmiValueSize == 32) return BinaryOpIC::SMI; |
| 2277 | return BinaryOpIC::INT32; |
| 2278 | } |
| 2279 | return BinaryOpIC::ODDBALL; |
| 2280 | } |
| 2281 | return BinaryOpIC::GENERIC; |
| 2282 | } |
| 2283 | |
| 2284 | |
| 2285 | static BinaryOpIC::TypeInfo InputState(BinaryOpIC::TypeInfo old_type, |
| 2286 | Handle<Object> value, |
| 2287 | Token::Value op) { |
| 2288 | BinaryOpIC::TypeInfo new_type = TypeInfoFromValue(value, op); |
| 2289 | if (old_type == BinaryOpIC::STRING) { |
| 2290 | if (new_type == BinaryOpIC::STRING) return new_type; |
| 2291 | return BinaryOpIC::GENERIC; |
| 2292 | } |
| 2293 | return Max(old_type, new_type); |
| 2294 | } |
| 2295 | |
| 2296 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2297 | RUNTIME_FUNCTION(MaybeObject*, BinaryOp_Patch) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2298 | ASSERT(args.length() == 3); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2299 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2300 | HandleScope scope(isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2301 | Handle<Object> left = args.at<Object>(0); |
| 2302 | Handle<Object> right = args.at<Object>(1); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2303 | int key = args.smi_at(2); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2304 | Token::Value op = BinaryOpStub::decode_op_from_minor_key(key); |
| 2305 | BinaryOpIC::TypeInfo previous_left, previous_right, unused_previous_result; |
| 2306 | BinaryOpStub::decode_types_from_minor_key( |
| 2307 | key, &previous_left, &previous_right, &unused_previous_result); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2308 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2309 | BinaryOpIC::TypeInfo new_left = InputState(previous_left, left, op); |
| 2310 | BinaryOpIC::TypeInfo new_right = InputState(previous_right, right, op); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2311 | BinaryOpIC::TypeInfo result_type = BinaryOpIC::UNINITIALIZED; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2312 | |
| 2313 | // STRING is only used for ADD operations. |
| 2314 | if ((new_left == BinaryOpIC::STRING || new_right == BinaryOpIC::STRING) && |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2315 | op != Token::ADD) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2316 | new_left = new_right = BinaryOpIC::GENERIC; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2317 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2318 | |
| 2319 | BinaryOpIC::TypeInfo new_overall = Max(new_left, new_right); |
| 2320 | BinaryOpIC::TypeInfo previous_overall = Max(previous_left, previous_right); |
| 2321 | |
| 2322 | if (new_overall == BinaryOpIC::SMI && previous_overall == BinaryOpIC::SMI) { |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 2323 | if (op == Token::DIV || |
| 2324 | op == Token::MUL || |
| 2325 | op == Token::SHR || |
| 2326 | kSmiValueSize == 32) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2327 | // Arithmetic on two Smi inputs has yielded a heap number. |
| 2328 | // That is the only way to get here from the Smi stub. |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2329 | // With 32-bit Smis, all overflows give heap numbers, but with |
| 2330 | // 31-bit Smis, most operations overflow to int32 results. |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2331 | result_type = BinaryOpIC::NUMBER; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2332 | } else { |
| 2333 | // Other operations on SMIs that overflow yield int32s. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2334 | result_type = BinaryOpIC::INT32; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2335 | } |
| 2336 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2337 | if (new_overall == BinaryOpIC::INT32 && |
| 2338 | previous_overall == BinaryOpIC::INT32) { |
| 2339 | if (new_left == previous_left && new_right == previous_right) { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2340 | result_type = BinaryOpIC::NUMBER; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2341 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2342 | } |
| 2343 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2344 | BinaryOpStub stub(key, new_left, new_right, result_type); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2345 | Handle<Code> code = stub.GetCode(isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2346 | if (!code.is_null()) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2347 | #ifdef DEBUG |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2348 | if (FLAG_trace_ic) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2349 | PrintF("[BinaryOpIC in "); |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 2350 | JavaScriptFrame::PrintTop(isolate, stdout, false, true); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2351 | PrintF(" ((%s+%s)->((%s+%s)->%s))#%s @ %p]\n", |
| 2352 | BinaryOpIC::GetName(previous_left), |
| 2353 | BinaryOpIC::GetName(previous_right), |
| 2354 | BinaryOpIC::GetName(new_left), |
| 2355 | BinaryOpIC::GetName(new_right), |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2356 | BinaryOpIC::GetName(result_type), |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2357 | Token::Name(op), |
| 2358 | static_cast<void*>(*code)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2359 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2360 | #endif |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2361 | BinaryOpIC ic(isolate); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2362 | ic.patch(*code); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2363 | |
| 2364 | // Activate inlined smi code. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2365 | if (previous_overall == BinaryOpIC::UNINITIALIZED) { |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2366 | PatchInlinedSmiCode(ic.address(), ENABLE_INLINED_SMI_CHECK); |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2367 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2368 | } |
| 2369 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2370 | Handle<JSBuiltinsObject> builtins = Handle<JSBuiltinsObject>( |
| 2371 | isolate->thread_local_top()->context_->builtins(), isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2372 | Object* builtin = NULL; // Initialization calms down the compiler. |
| 2373 | switch (op) { |
| 2374 | case Token::ADD: |
| 2375 | builtin = builtins->javascript_builtin(Builtins::ADD); |
| 2376 | break; |
| 2377 | case Token::SUB: |
| 2378 | builtin = builtins->javascript_builtin(Builtins::SUB); |
| 2379 | break; |
| 2380 | case Token::MUL: |
| 2381 | builtin = builtins->javascript_builtin(Builtins::MUL); |
| 2382 | break; |
| 2383 | case Token::DIV: |
| 2384 | builtin = builtins->javascript_builtin(Builtins::DIV); |
| 2385 | break; |
| 2386 | case Token::MOD: |
| 2387 | builtin = builtins->javascript_builtin(Builtins::MOD); |
| 2388 | break; |
| 2389 | case Token::BIT_AND: |
| 2390 | builtin = builtins->javascript_builtin(Builtins::BIT_AND); |
| 2391 | break; |
| 2392 | case Token::BIT_OR: |
| 2393 | builtin = builtins->javascript_builtin(Builtins::BIT_OR); |
| 2394 | break; |
| 2395 | case Token::BIT_XOR: |
| 2396 | builtin = builtins->javascript_builtin(Builtins::BIT_XOR); |
| 2397 | break; |
| 2398 | case Token::SHR: |
| 2399 | builtin = builtins->javascript_builtin(Builtins::SHR); |
| 2400 | break; |
| 2401 | case Token::SAR: |
| 2402 | builtin = builtins->javascript_builtin(Builtins::SAR); |
| 2403 | break; |
| 2404 | case Token::SHL: |
| 2405 | builtin = builtins->javascript_builtin(Builtins::SHL); |
| 2406 | break; |
| 2407 | default: |
| 2408 | UNREACHABLE(); |
| 2409 | } |
| 2410 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2411 | Handle<JSFunction> builtin_function(JSFunction::cast(builtin), isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2412 | |
| 2413 | bool caught_exception; |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 2414 | Handle<Object> builtin_args[] = { right }; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2415 | Handle<Object> result = Execution::Call(builtin_function, |
| 2416 | left, |
| 2417 | ARRAY_SIZE(builtin_args), |
| 2418 | builtin_args, |
| 2419 | &caught_exception); |
| 2420 | if (caught_exception) { |
| 2421 | return Failure::Exception(); |
| 2422 | } |
| 2423 | return *result; |
| 2424 | } |
| 2425 | |
| 2426 | |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2427 | Code* CompareIC::GetRawUninitialized(Token::Value op) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2428 | ICCompareStub stub(op, UNINITIALIZED, UNINITIALIZED, UNINITIALIZED); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2429 | Code* code = NULL; |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 2430 | CHECK(stub.FindCodeInCache(&code, Isolate::Current())); |
jkummerow@chromium.org | 212d964 | 2012-05-11 15:02:09 +0000 | [diff] [blame] | 2431 | return code; |
| 2432 | } |
| 2433 | |
| 2434 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2435 | Handle<Code> CompareIC::GetUninitialized(Isolate* isolate, Token::Value op) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2436 | ICCompareStub stub(op, UNINITIALIZED, UNINITIALIZED, UNINITIALIZED); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2437 | return stub.GetCode(isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2438 | } |
| 2439 | |
| 2440 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2441 | const char* CompareIC::GetStateName(State state) { |
| 2442 | switch (state) { |
| 2443 | case UNINITIALIZED: return "UNINITIALIZED"; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2444 | case SMI: return "SMI"; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2445 | case NUMBER: return "NUMBER"; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2446 | case INTERNALIZED_STRING: return "INTERNALIZED_STRING"; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2447 | case STRING: return "STRING"; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2448 | case UNIQUE_NAME: return "UNIQUE_NAME"; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2449 | case OBJECT: return "OBJECT"; |
| 2450 | case KNOWN_OBJECT: return "KNOWN_OBJECT"; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2451 | case GENERIC: return "GENERIC"; |
| 2452 | default: |
| 2453 | UNREACHABLE(); |
| 2454 | return NULL; |
| 2455 | } |
| 2456 | } |
| 2457 | |
| 2458 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2459 | static CompareIC::State InputState(CompareIC::State old_state, |
| 2460 | Handle<Object> value) { |
| 2461 | switch (old_state) { |
| 2462 | case CompareIC::UNINITIALIZED: |
| 2463 | if (value->IsSmi()) return CompareIC::SMI; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2464 | if (value->IsHeapNumber()) return CompareIC::NUMBER; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2465 | if (value->IsInternalizedString()) return CompareIC::INTERNALIZED_STRING; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2466 | if (value->IsString()) return CompareIC::STRING; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2467 | if (value->IsSymbol()) return CompareIC::UNIQUE_NAME; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2468 | if (value->IsJSObject()) return CompareIC::OBJECT; |
| 2469 | break; |
| 2470 | case CompareIC::SMI: |
| 2471 | if (value->IsSmi()) return CompareIC::SMI; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2472 | if (value->IsHeapNumber()) return CompareIC::NUMBER; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2473 | break; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2474 | case CompareIC::NUMBER: |
| 2475 | if (value->IsNumber()) return CompareIC::NUMBER; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2476 | break; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2477 | case CompareIC::INTERNALIZED_STRING: |
| 2478 | if (value->IsInternalizedString()) return CompareIC::INTERNALIZED_STRING; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2479 | if (value->IsString()) return CompareIC::STRING; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2480 | if (value->IsSymbol()) return CompareIC::UNIQUE_NAME; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2481 | break; |
| 2482 | case CompareIC::STRING: |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2483 | if (value->IsString()) return CompareIC::STRING; |
| 2484 | break; |
| 2485 | case CompareIC::UNIQUE_NAME: |
| 2486 | if (value->IsUniqueName()) return CompareIC::UNIQUE_NAME; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2487 | break; |
| 2488 | case CompareIC::OBJECT: |
| 2489 | if (value->IsJSObject()) return CompareIC::OBJECT; |
| 2490 | break; |
| 2491 | case CompareIC::GENERIC: |
| 2492 | break; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2493 | case CompareIC::KNOWN_OBJECT: |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2494 | UNREACHABLE(); |
| 2495 | break; |
| 2496 | } |
| 2497 | return CompareIC::GENERIC; |
| 2498 | } |
| 2499 | |
| 2500 | |
| 2501 | CompareIC::State CompareIC::TargetState(State old_state, |
| 2502 | State old_left, |
| 2503 | State old_right, |
ager@chromium.org | 5f0c45f | 2010-12-17 08:51:21 +0000 | [diff] [blame] | 2504 | bool has_inlined_smi_code, |
| 2505 | Handle<Object> x, |
| 2506 | Handle<Object> y) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2507 | switch (old_state) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2508 | case UNINITIALIZED: |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2509 | if (x->IsSmi() && y->IsSmi()) return SMI; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2510 | if (x->IsNumber() && y->IsNumber()) return NUMBER; |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 2511 | if (Token::IsOrderedRelationalCompareOp(op_)) { |
| 2512 | // Ordered comparisons treat undefined as NaN, so the |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2513 | // NUMBER stub will do the right thing. |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 2514 | if ((x->IsNumber() && y->IsUndefined()) || |
| 2515 | (y->IsNumber() && x->IsUndefined())) { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2516 | return NUMBER; |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 2517 | } |
| 2518 | } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2519 | if (x->IsInternalizedString() && y->IsInternalizedString()) { |
| 2520 | // We compare internalized strings as plain ones if we need to determine |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 2521 | // the order in a non-equality compare. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2522 | return Token::IsEqualityOp(op_) ? INTERNALIZED_STRING : STRING; |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 2523 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2524 | if (x->IsString() && y->IsString()) return STRING; |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 2525 | if (!Token::IsEqualityOp(op_)) return GENERIC; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2526 | if (x->IsUniqueName() && y->IsUniqueName()) return UNIQUE_NAME; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2527 | if (x->IsJSObject() && y->IsJSObject()) { |
| 2528 | if (Handle<JSObject>::cast(x)->map() == |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2529 | Handle<JSObject>::cast(y)->map()) { |
| 2530 | return KNOWN_OBJECT; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2531 | } else { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2532 | return OBJECT; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2533 | } |
| 2534 | } |
| 2535 | return GENERIC; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2536 | case SMI: |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2537 | return x->IsNumber() && y->IsNumber() ? NUMBER : GENERIC; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2538 | case INTERNALIZED_STRING: |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2539 | ASSERT(Token::IsEqualityOp(op_)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2540 | if (x->IsString() && y->IsString()) return STRING; |
| 2541 | if (x->IsUniqueName() && y->IsUniqueName()) return UNIQUE_NAME; |
| 2542 | return GENERIC; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2543 | case NUMBER: |
| 2544 | // If the failure was due to one side changing from smi to heap number, |
| 2545 | // then keep the state (if other changed at the same time, we will get |
| 2546 | // a second miss and then go to generic). |
| 2547 | if (old_left == SMI && x->IsHeapNumber()) return NUMBER; |
| 2548 | if (old_right == SMI && y->IsHeapNumber()) return NUMBER; |
| 2549 | return GENERIC; |
| 2550 | case KNOWN_OBJECT: |
| 2551 | ASSERT(Token::IsEqualityOp(op_)); |
| 2552 | if (x->IsJSObject() && y->IsJSObject()) return OBJECT; |
| 2553 | return GENERIC; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2554 | case STRING: |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame^] | 2555 | case UNIQUE_NAME: |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2556 | case OBJECT: |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2557 | case GENERIC: |
| 2558 | return GENERIC; |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 2559 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2560 | UNREACHABLE(); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2561 | return GENERIC; // Make the compiler happy. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2562 | } |
| 2563 | |
| 2564 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2565 | void CompareIC::UpdateCaches(Handle<Object> x, Handle<Object> y) { |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 2566 | HandleScope scope(isolate()); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2567 | State previous_left, previous_right, previous_state; |
| 2568 | ICCompareStub::DecodeMinorKey(target()->stub_info(), &previous_left, |
| 2569 | &previous_right, &previous_state, NULL); |
| 2570 | State new_left = InputState(previous_left, x); |
| 2571 | State new_right = InputState(previous_right, y); |
| 2572 | State state = TargetState(previous_state, previous_left, previous_right, |
| 2573 | HasInlinedSmiCode(address()), x, y); |
| 2574 | ICCompareStub stub(op_, new_left, new_right, state); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2575 | if (state == KNOWN_OBJECT) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2576 | stub.set_known_map(Handle<Map>(Handle<JSObject>::cast(x)->map())); |
| 2577 | } |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2578 | set_target(*stub.GetCode(isolate())); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2579 | |
| 2580 | #ifdef DEBUG |
| 2581 | if (FLAG_trace_ic) { |
| 2582 | PrintF("[CompareIC in "); |
yangguo@chromium.org | c03a192 | 2013-02-19 13:55:47 +0000 | [diff] [blame] | 2583 | JavaScriptFrame::PrintTop(isolate(), stdout, false, true); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2584 | PrintF(" ((%s+%s=%s)->(%s+%s=%s))#%s @ %p]\n", |
| 2585 | GetStateName(previous_left), |
| 2586 | GetStateName(previous_right), |
| 2587 | GetStateName(previous_state), |
| 2588 | GetStateName(new_left), |
| 2589 | GetStateName(new_right), |
| 2590 | GetStateName(state), |
| 2591 | Token::Name(op_), |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2592 | static_cast<void*>(*stub.GetCode(isolate()))); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2593 | } |
| 2594 | #endif |
| 2595 | |
| 2596 | // Activate inlined smi code. |
| 2597 | if (previous_state == UNINITIALIZED) { |
| 2598 | PatchInlinedSmiCode(address(), ENABLE_INLINED_SMI_CHECK); |
| 2599 | } |
| 2600 | } |
| 2601 | |
| 2602 | |
| 2603 | // Used from ICCompareStub::GenerateMiss in code-stubs-<arch>.cc. |
kmillikin@chromium.org | c36ce6e | 2011-04-04 08:25:31 +0000 | [diff] [blame] | 2604 | RUNTIME_FUNCTION(Code*, CompareIC_Miss) { |
ulan@chromium.org | 09d7ab5 | 2013-02-25 15:50:35 +0000 | [diff] [blame] | 2605 | NoHandleAllocation na(isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2606 | ASSERT(args.length() == 3); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 2607 | CompareIC ic(isolate, static_cast<Token::Value>(args.smi_at(2))); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2608 | ic.UpdateCaches(args.at<Object>(0), args.at<Object>(1)); |
| 2609 | return ic.target(); |
| 2610 | } |
| 2611 | |
| 2612 | |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 2613 | RUNTIME_FUNCTION(MaybeObject*, ToBoolean_Patch) { |
| 2614 | ASSERT(args.length() == 3); |
| 2615 | |
| 2616 | HandleScope scope(isolate); |
| 2617 | Handle<Object> object = args.at<Object>(0); |
| 2618 | Register tos = Register::from_code(args.smi_at(1)); |
| 2619 | ToBooleanStub::Types old_types(args.smi_at(2)); |
| 2620 | |
| 2621 | ToBooleanStub::Types new_types(old_types); |
| 2622 | bool to_boolean_value = new_types.Record(object); |
| 2623 | old_types.TraceTransition(new_types); |
| 2624 | |
| 2625 | ToBooleanStub stub(tos, new_types); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2626 | Handle<Code> code = stub.GetCode(isolate); |
ricow@chromium.org | 9fa0967 | 2011-07-25 11:05:35 +0000 | [diff] [blame] | 2627 | ToBooleanIC ic(isolate); |
| 2628 | ic.patch(*code); |
| 2629 | return Smi::FromInt(to_boolean_value ? 1 : 0); |
| 2630 | } |
| 2631 | |
| 2632 | |
| 2633 | void ToBooleanIC::patch(Code* code) { |
| 2634 | set_target(code); |
| 2635 | } |
| 2636 | |
| 2637 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2638 | static const Address IC_utilities[] = { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2639 | #define ADDR(name) FUNCTION_ADDR(name), |
| 2640 | IC_UTIL_LIST(ADDR) |
| 2641 | NULL |
| 2642 | #undef ADDR |
| 2643 | }; |
| 2644 | |
| 2645 | |
| 2646 | Address IC::AddressFromUtilityId(IC::UtilityId id) { |
| 2647 | return IC_utilities[id]; |
| 2648 | } |
| 2649 | |
| 2650 | |
| 2651 | } } // namespace v8::internal |