Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +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 | #ifndef V8_IC_H_ |
| 29 | #define V8_IC_H_ |
| 30 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 31 | #include "macro-assembler.h" |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 32 | #include "type-info.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 33 | |
| 34 | namespace v8 { |
| 35 | namespace internal { |
| 36 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 37 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 38 | // IC_UTIL_LIST defines all utility functions called from generated |
| 39 | // inline caching code. The argument for the macro, ICU, is the function name. |
| 40 | #define IC_UTIL_LIST(ICU) \ |
| 41 | ICU(LoadIC_Miss) \ |
| 42 | ICU(KeyedLoadIC_Miss) \ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 43 | ICU(KeyedLoadIC_MissForceGeneric) \ |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 44 | ICU(CallIC_Miss) \ |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 45 | ICU(KeyedCallIC_Miss) \ |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 46 | ICU(StoreIC_Miss) \ |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 47 | ICU(StoreIC_ArrayLength) \ |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 48 | ICU(SharedStoreIC_ExtendStorage) \ |
| 49 | ICU(KeyedStoreIC_Miss) \ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 50 | ICU(KeyedStoreIC_MissForceGeneric) \ |
| 51 | ICU(KeyedStoreIC_Slow) \ |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 52 | /* Utilities for IC stubs. */ \ |
| 53 | ICU(LoadCallbackProperty) \ |
| 54 | ICU(StoreCallbackProperty) \ |
| 55 | ICU(LoadPropertyWithInterceptorOnly) \ |
| 56 | ICU(LoadPropertyWithInterceptorForLoad) \ |
| 57 | ICU(LoadPropertyWithInterceptorForCall) \ |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 58 | ICU(KeyedLoadPropertyWithInterceptor) \ |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 59 | ICU(StoreInterceptorProperty) \ |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 60 | ICU(UnaryOp_Patch) \ |
| 61 | ICU(BinaryOp_Patch) \ |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 62 | ICU(CompareIC_Miss) \ |
| 63 | ICU(ToBoolean_Patch) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 64 | // |
| 65 | // IC is the base class for LoadIC, StoreIC, CallIC, KeyedLoadIC, |
| 66 | // and KeyedStoreIC. |
| 67 | // |
| 68 | class IC { |
| 69 | public: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 70 | // The ids for utility called from the generated code. |
| 71 | enum UtilityId { |
| 72 | #define CONST_NAME(name) k##name, |
| 73 | IC_UTIL_LIST(CONST_NAME) |
| 74 | #undef CONST_NAME |
| 75 | kUtilityCount |
| 76 | }; |
| 77 | |
| 78 | // Looks up the address of the named utility. |
| 79 | static Address AddressFromUtilityId(UtilityId id); |
| 80 | |
| 81 | // Alias the inline cache state type to make the IC code more readable. |
| 82 | typedef InlineCacheState State; |
| 83 | |
| 84 | // The IC code is either invoked with no extra frames on the stack |
| 85 | // or with a single extra frame for supporting calls. |
| 86 | enum FrameDepth { |
| 87 | NO_EXTRA_FRAME = 0, |
| 88 | EXTRA_CALL_FRAME = 1 |
| 89 | }; |
| 90 | |
| 91 | // Construct the IC structure with the given number of extra |
| 92 | // JavaScript frames on the stack. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 93 | IC(FrameDepth depth, Isolate* isolate); |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 94 | virtual ~IC() {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 95 | |
| 96 | // Get the call-site target; used for determining the state. |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 97 | Code* target() const { return GetTargetAtAddress(address()); } |
| 98 | inline Address address() const; |
| 99 | |
| 100 | virtual bool IsGeneric() const { return false; } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 101 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 102 | // Compute the current IC state based on the target stub, receiver and name. |
| 103 | static State StateFrom(Code* target, Object* receiver, Object* name); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 104 | |
| 105 | // Clear the inline cache to initial state. |
| 106 | static void Clear(Address address); |
| 107 | |
| 108 | // Computes the reloc info for this IC. This is a fairly expensive |
| 109 | // operation as it has to search through the heap to find the code |
| 110 | // object that contains this IC site. |
| 111 | RelocInfo::Mode ComputeMode(); |
| 112 | |
| 113 | // Returns if this IC is for contextual (no explicit receiver) |
| 114 | // access to properties. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 115 | bool IsContextual(Handle<Object> receiver) { |
| 116 | if (receiver->IsGlobalObject()) { |
| 117 | return SlowIsContextual(); |
| 118 | } else { |
| 119 | ASSERT(!SlowIsContextual()); |
| 120 | return false; |
| 121 | } |
| 122 | } |
| 123 | |
| 124 | bool SlowIsContextual() { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 125 | return ComputeMode() == RelocInfo::CODE_TARGET_CONTEXT; |
| 126 | } |
| 127 | |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 128 | // Determines which map must be used for keeping the code stub. |
| 129 | // These methods should not be called with undefined or null. |
| 130 | static inline InlineCacheHolderFlag GetCodeCacheForObject(Object* object, |
| 131 | JSObject* holder); |
| 132 | static inline InlineCacheHolderFlag GetCodeCacheForObject(JSObject* object, |
| 133 | JSObject* holder); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 134 | static inline JSObject* GetCodeCacheHolder(Object* object, |
| 135 | InlineCacheHolderFlag holder); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 136 | |
| 137 | protected: |
| 138 | Address fp() const { return fp_; } |
| 139 | Address pc() const { return *pc_address_; } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 140 | Isolate* isolate() const { return isolate_; } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 141 | |
| 142 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 143 | // Computes the address in the original code when the code running is |
| 144 | // containing break points (calls to DebugBreakXXX builtins). |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 145 | Address OriginalCodeAddress() const; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 146 | #endif |
| 147 | |
| 148 | // Set the call-site target. |
| 149 | void set_target(Code* code) { SetTargetAtAddress(address(), code); } |
| 150 | |
| 151 | #ifdef DEBUG |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 152 | char TransitionMarkFromState(IC::State state); |
| 153 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 154 | void TraceIC(const char* type, |
| 155 | Handle<Object> name, |
| 156 | State old_state, |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 157 | Code* new_target); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 158 | #endif |
| 159 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 160 | Failure* TypeError(const char* type, |
| 161 | Handle<Object> object, |
| 162 | Handle<Object> key); |
| 163 | Failure* ReferenceError(const char* type, Handle<String> name); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 164 | |
| 165 | // Access the target code for the given IC address. |
| 166 | static inline Code* GetTargetAtAddress(Address address); |
| 167 | static inline void SetTargetAtAddress(Address address, Code* target); |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 168 | static void PostPatching(Address address, Code* target, Code* old_target); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 169 | |
| 170 | private: |
| 171 | // Frame pointer for the frame that uses (calls) the IC. |
| 172 | Address fp_; |
| 173 | |
| 174 | // All access to the program counter of an IC structure is indirect |
| 175 | // to make the code GC safe. This feature is crucial since |
| 176 | // GetProperty and SetProperty are called and they in turn might |
| 177 | // invoke the garbage collector. |
| 178 | Address* pc_address_; |
| 179 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 180 | Isolate* isolate_; |
| 181 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 182 | DISALLOW_IMPLICIT_CONSTRUCTORS(IC); |
| 183 | }; |
| 184 | |
| 185 | |
| 186 | // An IC_Utility encapsulates IC::UtilityId. It exists mainly because you |
| 187 | // cannot make forward declarations to an enum. |
| 188 | class IC_Utility { |
| 189 | public: |
| 190 | explicit IC_Utility(IC::UtilityId id) |
| 191 | : address_(IC::AddressFromUtilityId(id)), id_(id) {} |
| 192 | |
| 193 | Address address() const { return address_; } |
| 194 | |
| 195 | IC::UtilityId id() const { return id_; } |
| 196 | private: |
| 197 | Address address_; |
| 198 | IC::UtilityId id_; |
| 199 | }; |
| 200 | |
| 201 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 202 | class CallICBase: public IC { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 203 | public: |
| 204 | class Contextual: public BitField<bool, 0, 1> {}; |
| 205 | class StringStubState: public BitField<StringStubFeedback, 1, 1> {}; |
| 206 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 207 | // Returns a JSFunction or a Failure. |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 208 | MUST_USE_RESULT MaybeObject* LoadFunction(State state, |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 209 | Code::ExtraICState extra_ic_state, |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 210 | Handle<Object> object, |
| 211 | Handle<String> name); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 212 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 213 | protected: |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 214 | CallICBase(Code::Kind kind, Isolate* isolate) |
| 215 | : IC(EXTRA_CALL_FRAME, isolate), kind_(kind) {} |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 216 | |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 217 | bool TryUpdateExtraICState(LookupResult* lookup, |
| 218 | Handle<Object> object, |
| 219 | Code::ExtraICState* extra_ic_state); |
| 220 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 221 | // Compute a monomorphic stub if possible, otherwise return a null handle. |
| 222 | Handle<Code> ComputeMonomorphicStub(LookupResult* lookup, |
| 223 | State state, |
| 224 | Code::ExtraICState extra_state, |
| 225 | Handle<Object> object, |
| 226 | Handle<String> name); |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 227 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 228 | // Update the inline cache and the global stub cache based on the lookup |
| 229 | // result. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 230 | void UpdateCaches(LookupResult* lookup, |
| 231 | State state, |
Ben Murdoch | b8e0da2 | 2011-05-16 14:20:40 +0100 | [diff] [blame] | 232 | Code::ExtraICState extra_ic_state, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 233 | Handle<Object> object, |
| 234 | Handle<String> name); |
| 235 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 236 | // Returns a JSFunction if the object can be called as a function, and |
| 237 | // patches the stack to be ready for the call. Otherwise, it returns the |
| 238 | // undefined value. |
| 239 | Handle<Object> TryCallAsFunction(Handle<Object> object); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 240 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 241 | void ReceiverToObjectIfRequired(Handle<Object> callee, Handle<Object> object); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 242 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 243 | static void Clear(Address address, Code* target); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 244 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 245 | // Platform-specific code generation functions used by both call and |
| 246 | // keyed call. |
| 247 | static void GenerateMiss(MacroAssembler* masm, |
| 248 | int argc, |
| 249 | IC::UtilityId id, |
| 250 | Code::ExtraICState extra_state); |
| 251 | |
| 252 | static void GenerateNormal(MacroAssembler* masm, int argc); |
| 253 | |
| 254 | static void GenerateMonomorphicCacheProbe(MacroAssembler* masm, |
| 255 | int argc, |
| 256 | Code::Kind kind, |
| 257 | Code::ExtraICState extra_state); |
| 258 | |
| 259 | Code::Kind kind_; |
| 260 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 261 | friend class IC; |
| 262 | }; |
| 263 | |
| 264 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 265 | class CallIC: public CallICBase { |
| 266 | public: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 267 | explicit CallIC(Isolate* isolate) : CallICBase(Code::CALL_IC, isolate) { |
| 268 | ASSERT(target()->is_call_stub()); |
| 269 | } |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 270 | |
| 271 | // Code generator routines. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 272 | static void GenerateInitialize(MacroAssembler* masm, |
| 273 | int argc, |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 274 | Code::ExtraICState extra_state) { |
| 275 | GenerateMiss(masm, argc, extra_state); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 276 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 277 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 278 | static void GenerateMiss(MacroAssembler* masm, |
| 279 | int argc, |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 280 | Code::ExtraICState extra_state) { |
| 281 | CallICBase::GenerateMiss(masm, argc, IC::kCallIC_Miss, extra_state); |
| 282 | } |
| 283 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 284 | static void GenerateMegamorphic(MacroAssembler* masm, |
| 285 | int argc, |
| 286 | Code::ExtraICState extra_ic_state); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 287 | |
| 288 | static void GenerateNormal(MacroAssembler* masm, int argc) { |
| 289 | CallICBase::GenerateNormal(masm, argc); |
| 290 | GenerateMiss(masm, argc, Code::kNoExtraICState); |
| 291 | } |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 292 | }; |
| 293 | |
| 294 | |
| 295 | class KeyedCallIC: public CallICBase { |
| 296 | public: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 297 | explicit KeyedCallIC(Isolate* isolate) |
| 298 | : CallICBase(Code::KEYED_CALL_IC, isolate) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 299 | ASSERT(target()->is_keyed_call_stub()); |
| 300 | } |
| 301 | |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 302 | MUST_USE_RESULT MaybeObject* LoadFunction(State state, |
| 303 | Handle<Object> object, |
| 304 | Handle<Object> key); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 305 | |
| 306 | // Code generator routines. |
| 307 | static void GenerateInitialize(MacroAssembler* masm, int argc) { |
| 308 | GenerateMiss(masm, argc); |
| 309 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 310 | |
| 311 | static void GenerateMiss(MacroAssembler* masm, int argc) { |
| 312 | CallICBase::GenerateMiss(masm, argc, IC::kKeyedCallIC_Miss, |
| 313 | Code::kNoExtraICState); |
| 314 | } |
| 315 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 316 | static void GenerateMegamorphic(MacroAssembler* masm, int argc); |
| 317 | static void GenerateNormal(MacroAssembler* masm, int argc); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 318 | static void GenerateNonStrictArguments(MacroAssembler* masm, int argc); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 319 | }; |
| 320 | |
| 321 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 322 | class LoadIC: public IC { |
| 323 | public: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 324 | explicit LoadIC(Isolate* isolate) : IC(NO_EXTRA_FRAME, isolate) { |
| 325 | ASSERT(target()->is_load_stub()); |
| 326 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 327 | |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 328 | MUST_USE_RESULT MaybeObject* Load(State state, |
| 329 | Handle<Object> object, |
| 330 | Handle<String> name); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 331 | |
| 332 | // Code generator routines. |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 333 | static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); } |
| 334 | static void GeneratePreMonomorphic(MacroAssembler* masm) { |
| 335 | GenerateMiss(masm); |
| 336 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 337 | static void GenerateMiss(MacroAssembler* masm); |
| 338 | static void GenerateMegamorphic(MacroAssembler* masm); |
| 339 | static void GenerateNormal(MacroAssembler* masm); |
| 340 | |
| 341 | // Specialized code generator routines. |
| 342 | static void GenerateArrayLength(MacroAssembler* masm); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 343 | static void GenerateStringLength(MacroAssembler* masm, |
| 344 | bool support_wrappers); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 345 | static void GenerateFunctionPrototype(MacroAssembler* masm); |
| 346 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 347 | private: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 348 | // Update the inline cache and the global stub cache based on the |
| 349 | // lookup result. |
| 350 | void UpdateCaches(LookupResult* lookup, |
| 351 | State state, |
| 352 | Handle<Object> object, |
| 353 | Handle<String> name); |
| 354 | |
| 355 | // Stub accessors. |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 356 | Handle<Code> megamorphic_stub() { |
| 357 | return isolate()->builtins()->LoadIC_Megamorphic(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 358 | } |
| 359 | static Code* initialize_stub() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 360 | return Isolate::Current()->builtins()->builtin( |
| 361 | Builtins::kLoadIC_Initialize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 362 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 363 | Handle<Code> pre_monomorphic_stub() { |
| 364 | return isolate()->builtins()->LoadIC_PreMonomorphic(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 365 | } |
| 366 | |
| 367 | static void Clear(Address address, Code* target); |
| 368 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 369 | friend class IC; |
| 370 | }; |
| 371 | |
| 372 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 373 | class KeyedIC: public IC { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 374 | public: |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 375 | enum StubKind { |
| 376 | LOAD, |
| 377 | STORE_NO_TRANSITION, |
| 378 | STORE_TRANSITION_SMI_TO_OBJECT, |
| 379 | STORE_TRANSITION_SMI_TO_DOUBLE, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 380 | STORE_TRANSITION_DOUBLE_TO_OBJECT, |
| 381 | STORE_AND_GROW_NO_TRANSITION, |
| 382 | STORE_AND_GROW_TRANSITION_SMI_TO_OBJECT, |
| 383 | STORE_AND_GROW_TRANSITION_SMI_TO_DOUBLE, |
| 384 | STORE_AND_GROW_TRANSITION_DOUBLE_TO_OBJECT |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 385 | }; |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 386 | |
| 387 | static const int kGrowICDelta = STORE_AND_GROW_NO_TRANSITION - |
| 388 | STORE_NO_TRANSITION; |
| 389 | STATIC_ASSERT(kGrowICDelta == |
| 390 | STORE_AND_GROW_TRANSITION_SMI_TO_OBJECT - |
| 391 | STORE_TRANSITION_SMI_TO_OBJECT); |
| 392 | STATIC_ASSERT(kGrowICDelta == |
| 393 | STORE_AND_GROW_TRANSITION_SMI_TO_DOUBLE - |
| 394 | STORE_TRANSITION_SMI_TO_DOUBLE); |
| 395 | STATIC_ASSERT(kGrowICDelta == |
| 396 | STORE_AND_GROW_TRANSITION_DOUBLE_TO_OBJECT - |
| 397 | STORE_TRANSITION_DOUBLE_TO_OBJECT); |
| 398 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 399 | explicit KeyedIC(Isolate* isolate) : IC(NO_EXTRA_FRAME, isolate) {} |
| 400 | virtual ~KeyedIC() {} |
| 401 | |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 402 | static inline KeyedAccessGrowMode GetGrowModeFromStubKind( |
| 403 | StubKind stub_kind) { |
| 404 | return (stub_kind >= STORE_AND_GROW_NO_TRANSITION) |
| 405 | ? ALLOW_JSARRAY_GROWTH |
| 406 | : DO_NOT_ALLOW_JSARRAY_GROWTH; |
| 407 | } |
| 408 | |
| 409 | static inline StubKind GetGrowStubKind(StubKind stub_kind) { |
| 410 | ASSERT(stub_kind != LOAD); |
| 411 | if (stub_kind < STORE_AND_GROW_NO_TRANSITION) { |
| 412 | stub_kind = static_cast<StubKind>(static_cast<int>(stub_kind) + |
| 413 | kGrowICDelta); |
| 414 | } |
| 415 | return stub_kind; |
| 416 | } |
| 417 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 418 | virtual Handle<Code> GetElementStubWithoutMapCheck( |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 419 | bool is_js_array, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 420 | ElementsKind elements_kind, |
| 421 | KeyedAccessGrowMode grow_mode) = 0; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 422 | |
| 423 | protected: |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 424 | virtual Handle<Code> string_stub() { |
| 425 | return Handle<Code>::null(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 426 | } |
| 427 | |
| 428 | virtual Code::Kind kind() const = 0; |
| 429 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 430 | Handle<Code> ComputeStub(Handle<JSObject> receiver, |
| 431 | StubKind stub_kind, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 432 | StrictModeFlag strict_mode, |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 433 | Handle<Code> default_stub); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 434 | |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 435 | virtual Handle<Code> ComputePolymorphicStub( |
| 436 | MapHandleList* receiver_maps, |
| 437 | StrictModeFlag strict_mode, |
| 438 | KeyedAccessGrowMode grow_mode) = 0; |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 439 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 440 | Handle<Code> ComputeMonomorphicStubWithoutMapCheck( |
| 441 | Handle<Map> receiver_map, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 442 | StrictModeFlag strict_mode, |
| 443 | KeyedAccessGrowMode grow_mode); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 444 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 445 | private: |
| 446 | void GetReceiverMapsForStub(Handle<Code> stub, MapHandleList* result); |
| 447 | |
| 448 | Handle<Code> ComputeMonomorphicStub(Handle<JSObject> receiver, |
| 449 | StubKind stub_kind, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 450 | StrictModeFlag strict_mode, |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 451 | Handle<Code> default_stub); |
| 452 | |
| 453 | Handle<Map> ComputeTransitionedMap(Handle<JSObject> receiver, |
| 454 | StubKind stub_kind); |
| 455 | |
| 456 | static bool IsTransitionStubKind(StubKind stub_kind) { |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 457 | return stub_kind > STORE_NO_TRANSITION && |
| 458 | stub_kind != STORE_AND_GROW_NO_TRANSITION; |
| 459 | } |
| 460 | |
| 461 | static bool IsGrowStubKind(StubKind stub_kind) { |
| 462 | return stub_kind >= STORE_AND_GROW_NO_TRANSITION; |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 463 | } |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 464 | }; |
| 465 | |
| 466 | |
| 467 | class KeyedLoadIC: public KeyedIC { |
| 468 | public: |
| 469 | explicit KeyedLoadIC(Isolate* isolate) : KeyedIC(isolate) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 470 | ASSERT(target()->is_keyed_load_stub()); |
| 471 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 472 | |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 473 | MUST_USE_RESULT MaybeObject* Load(State state, |
| 474 | Handle<Object> object, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 475 | Handle<Object> key, |
| 476 | bool force_generic_stub); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 477 | |
| 478 | // Code generator routines. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 479 | static void GenerateMiss(MacroAssembler* masm, bool force_generic); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 480 | static void GenerateRuntimeGetProperty(MacroAssembler* masm); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 481 | static void GenerateInitialize(MacroAssembler* masm) { |
| 482 | GenerateMiss(masm, false); |
| 483 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 484 | static void GeneratePreMonomorphic(MacroAssembler* masm) { |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 485 | GenerateMiss(masm, false); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 486 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 487 | static void GenerateGeneric(MacroAssembler* masm); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 488 | static void GenerateString(MacroAssembler* masm); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 489 | static void GenerateIndexedInterceptor(MacroAssembler* masm); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 490 | static void GenerateNonStrictArguments(MacroAssembler* masm); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 491 | |
Leon Clarke | d91b9f7 | 2010-01-27 17:25:45 +0000 | [diff] [blame] | 492 | // Bit mask to be tested against bit field for the cases when |
| 493 | // generic stub should go into slow case. |
| 494 | // Access check is necessary explicitly since generic stub does not perform |
| 495 | // map checks. |
| 496 | static const int kSlowCaseBitFieldMask = |
| 497 | (1 << Map::kIsAccessCheckNeeded) | (1 << Map::kHasIndexedInterceptor); |
| 498 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 499 | virtual Handle<Code> GetElementStubWithoutMapCheck( |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 500 | bool is_js_array, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 501 | ElementsKind elements_kind, |
| 502 | KeyedAccessGrowMode grow_mode); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 503 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 504 | virtual bool IsGeneric() const { |
| 505 | return target() == *generic_stub(); |
| 506 | } |
| 507 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 508 | protected: |
| 509 | virtual Code::Kind kind() const { return Code::KEYED_LOAD_IC; } |
| 510 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 511 | virtual Handle<Code> ComputePolymorphicStub(MapHandleList* receiver_maps, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 512 | StrictModeFlag strict_mode, |
| 513 | KeyedAccessGrowMode grow_mode); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 514 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 515 | virtual Handle<Code> string_stub() { |
| 516 | return isolate()->builtins()->KeyedLoadIC_String(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 517 | } |
| 518 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 519 | private: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 520 | // Update the inline cache. |
| 521 | void UpdateCaches(LookupResult* lookup, |
| 522 | State state, |
| 523 | Handle<Object> object, |
| 524 | Handle<String> name); |
| 525 | |
| 526 | // Stub accessors. |
| 527 | static Code* initialize_stub() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 528 | return Isolate::Current()->builtins()->builtin( |
| 529 | Builtins::kKeyedLoadIC_Initialize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 530 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 531 | Handle<Code> megamorphic_stub() { |
| 532 | return isolate()->builtins()->KeyedLoadIC_Generic(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 533 | } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 534 | Handle<Code> generic_stub() const { |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 535 | return isolate()->builtins()->KeyedLoadIC_Generic(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 536 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 537 | Handle<Code> pre_monomorphic_stub() { |
| 538 | return isolate()->builtins()->KeyedLoadIC_PreMonomorphic(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 539 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 540 | Handle<Code> indexed_interceptor_stub() { |
| 541 | return isolate()->builtins()->KeyedLoadIC_IndexedInterceptor(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 542 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 543 | Handle<Code> non_strict_arguments_stub() { |
| 544 | return isolate()->builtins()->KeyedLoadIC_NonStrictArguments(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 545 | } |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 546 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 547 | static void Clear(Address address, Code* target); |
| 548 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 549 | friend class IC; |
| 550 | }; |
| 551 | |
| 552 | |
| 553 | class StoreIC: public IC { |
| 554 | public: |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 555 | explicit StoreIC(Isolate* isolate) : IC(NO_EXTRA_FRAME, isolate) { |
| 556 | ASSERT(target()->is_store_stub()); |
| 557 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 558 | |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 559 | MUST_USE_RESULT MaybeObject* Store(State state, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 560 | StrictModeFlag strict_mode, |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 561 | Handle<Object> object, |
| 562 | Handle<String> name, |
| 563 | Handle<Object> value); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 564 | |
| 565 | // Code generators for stub routines. Only called once at startup. |
Leon Clarke | 4515c47 | 2010-02-03 11:58:03 +0000 | [diff] [blame] | 566 | static void GenerateInitialize(MacroAssembler* masm) { GenerateMiss(masm); } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 567 | static void GenerateMiss(MacroAssembler* masm); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 568 | static void GenerateMegamorphic(MacroAssembler* masm, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 569 | StrictModeFlag strict_mode); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 570 | static void GenerateArrayLength(MacroAssembler* masm); |
Steve Block | 8defd9f | 2010-07-08 12:39:36 +0100 | [diff] [blame] | 571 | static void GenerateNormal(MacroAssembler* masm); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 572 | static void GenerateGlobalProxy(MacroAssembler* masm, |
| 573 | StrictModeFlag strict_mode); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 574 | |
| 575 | private: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 576 | // Update the inline cache and the global stub cache based on the |
| 577 | // lookup result. |
| 578 | void UpdateCaches(LookupResult* lookup, |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 579 | State state, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 580 | StrictModeFlag strict_mode, |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 581 | Handle<JSObject> receiver, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 582 | Handle<String> name, |
| 583 | Handle<Object> value); |
| 584 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 585 | void set_target(Code* code) { |
| 586 | // Strict mode must be preserved across IC patching. |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 587 | ASSERT(Code::GetStrictMode(code->extra_ic_state()) == |
| 588 | Code::GetStrictMode(target()->extra_ic_state())); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 589 | IC::set_target(code); |
| 590 | } |
| 591 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 592 | // Stub accessors. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 593 | Code* megamorphic_stub() { |
| 594 | return isolate()->builtins()->builtin( |
| 595 | Builtins::kStoreIC_Megamorphic); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 596 | } |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 597 | Code* megamorphic_stub_strict() { |
| 598 | return isolate()->builtins()->builtin( |
| 599 | Builtins::kStoreIC_Megamorphic_Strict); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 600 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 601 | static Code* initialize_stub() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 602 | return Isolate::Current()->builtins()->builtin( |
| 603 | Builtins::kStoreIC_Initialize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 604 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 605 | static Code* initialize_stub_strict() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 606 | return Isolate::Current()->builtins()->builtin( |
| 607 | Builtins::kStoreIC_Initialize_Strict); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 608 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 609 | Handle<Code> global_proxy_stub() { |
| 610 | return isolate()->builtins()->StoreIC_GlobalProxy(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 611 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 612 | Handle<Code> global_proxy_stub_strict() { |
| 613 | return isolate()->builtins()->StoreIC_GlobalProxy_Strict(); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 614 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 615 | |
| 616 | static void Clear(Address address, Code* target); |
Kristian Monsen | 50ef84f | 2010-07-29 15:18:00 +0100 | [diff] [blame] | 617 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 618 | friend class IC; |
| 619 | }; |
| 620 | |
| 621 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 622 | class KeyedStoreIC: public KeyedIC { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 623 | public: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 624 | explicit KeyedStoreIC(Isolate* isolate) : KeyedIC(isolate) { |
| 625 | ASSERT(target()->is_keyed_store_stub()); |
| 626 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 627 | |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 628 | MUST_USE_RESULT MaybeObject* Store(State state, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 629 | StrictModeFlag strict_mode, |
John Reck | 5913587 | 2010-11-02 12:39:01 -0700 | [diff] [blame] | 630 | Handle<Object> object, |
| 631 | Handle<Object> name, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 632 | Handle<Object> value, |
| 633 | bool force_generic); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 634 | |
| 635 | // Code generators for stub routines. Only called once at startup. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 636 | static void GenerateInitialize(MacroAssembler* masm) { |
| 637 | GenerateMiss(masm, false); |
| 638 | } |
| 639 | static void GenerateMiss(MacroAssembler* masm, bool force_generic); |
| 640 | static void GenerateSlow(MacroAssembler* masm); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 641 | static void GenerateRuntimeSetProperty(MacroAssembler* masm, |
| 642 | StrictModeFlag strict_mode); |
| 643 | static void GenerateGeneric(MacroAssembler* masm, StrictModeFlag strict_mode); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 644 | static void GenerateNonStrictArguments(MacroAssembler* masm); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 645 | static void GenerateTransitionElementsSmiToDouble(MacroAssembler* masm); |
| 646 | static void GenerateTransitionElementsDoubleToObject(MacroAssembler* masm); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 647 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 648 | virtual Handle<Code> GetElementStubWithoutMapCheck( |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 649 | bool is_js_array, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 650 | ElementsKind elements_kind, |
| 651 | KeyedAccessGrowMode grow_mode); |
Steve Block | 053d10c | 2011-06-13 19:13:29 +0100 | [diff] [blame] | 652 | |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 653 | virtual bool IsGeneric() const { |
| 654 | return target() == *generic_stub() || |
| 655 | target() == *generic_stub_strict(); |
| 656 | } |
| 657 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 658 | protected: |
| 659 | virtual Code::Kind kind() const { return Code::KEYED_STORE_IC; } |
| 660 | |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 661 | virtual Handle<Code> ComputePolymorphicStub(MapHandleList* receiver_maps, |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 662 | StrictModeFlag strict_mode, |
| 663 | KeyedAccessGrowMode grow_mode); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 664 | |
| 665 | private: |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 666 | // Update the inline cache. |
| 667 | void UpdateCaches(LookupResult* lookup, |
| 668 | State state, |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 669 | StrictModeFlag strict_mode, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 670 | Handle<JSObject> receiver, |
| 671 | Handle<String> name, |
| 672 | Handle<Object> value); |
| 673 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 674 | void set_target(Code* code) { |
| 675 | // Strict mode must be preserved across IC patching. |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 676 | ASSERT(Code::GetStrictMode(code->extra_ic_state()) == |
| 677 | Code::GetStrictMode(target()->extra_ic_state())); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 678 | IC::set_target(code); |
| 679 | } |
| 680 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 681 | // Stub accessors. |
| 682 | static Code* initialize_stub() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 683 | return Isolate::Current()->builtins()->builtin( |
| 684 | Builtins::kKeyedStoreIC_Initialize); |
| 685 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 686 | static Code* initialize_stub_strict() { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 687 | return Isolate::Current()->builtins()->builtin( |
| 688 | Builtins::kKeyedStoreIC_Initialize_Strict); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 689 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 690 | Handle<Code> megamorphic_stub() { |
| 691 | return isolate()->builtins()->KeyedStoreIC_Generic(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 692 | } |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 693 | Handle<Code> megamorphic_stub_strict() { |
| 694 | return isolate()->builtins()->KeyedStoreIC_Generic_Strict(); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 695 | } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 696 | Handle<Code> generic_stub() const { |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 697 | return isolate()->builtins()->KeyedStoreIC_Generic(); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 698 | } |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 699 | Handle<Code> generic_stub_strict() const { |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 700 | return isolate()->builtins()->KeyedStoreIC_Generic_Strict(); |
| 701 | } |
| 702 | Handle<Code> non_strict_arguments_stub() { |
| 703 | return isolate()->builtins()->KeyedStoreIC_NonStrictArguments(); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 704 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 705 | |
| 706 | static void Clear(Address address, Code* target); |
| 707 | |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame^] | 708 | StubKind GetStubKind(Handle<JSObject> receiver, |
| 709 | Handle<Object> key, |
| 710 | Handle<Object> value); |
| 711 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 712 | friend class IC; |
| 713 | }; |
| 714 | |
| 715 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 716 | class UnaryOpIC: public IC { |
| 717 | public: |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 718 | // sorted: increasingly more unspecific (ignoring UNINITIALIZED) |
| 719 | // TODO(svenpanne) Using enums+switch is an antipattern, use a class instead. |
| 720 | enum TypeInfo { |
| 721 | UNINITIALIZED, |
| 722 | SMI, |
| 723 | HEAP_NUMBER, |
| 724 | GENERIC |
| 725 | }; |
| 726 | |
| 727 | explicit UnaryOpIC(Isolate* isolate) : IC(NO_EXTRA_FRAME, isolate) { } |
| 728 | |
| 729 | void patch(Code* code); |
| 730 | |
| 731 | static const char* GetName(TypeInfo type_info); |
| 732 | |
| 733 | static State ToState(TypeInfo type_info); |
| 734 | |
| 735 | static TypeInfo GetTypeInfo(Handle<Object> operand); |
| 736 | |
| 737 | static TypeInfo ComputeNewType(TypeInfo type, TypeInfo previous); |
| 738 | }; |
| 739 | |
| 740 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 741 | // Type Recording BinaryOpIC, that records the types of the inputs and outputs. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 742 | class BinaryOpIC: public IC { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 743 | public: |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 744 | enum TypeInfo { |
| 745 | UNINITIALIZED, |
| 746 | SMI, |
| 747 | INT32, |
| 748 | HEAP_NUMBER, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 749 | ODDBALL, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 750 | BOTH_STRING, // Only used for addition operation. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 751 | STRING, // Only used for addition operation. At least one string operand. |
| 752 | GENERIC |
| 753 | }; |
| 754 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 755 | explicit BinaryOpIC(Isolate* isolate) : IC(NO_EXTRA_FRAME, isolate) { } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 756 | |
| 757 | void patch(Code* code); |
| 758 | |
| 759 | static const char* GetName(TypeInfo type_info); |
| 760 | |
| 761 | static State ToState(TypeInfo type_info); |
| 762 | |
| 763 | static TypeInfo GetTypeInfo(Handle<Object> left, Handle<Object> right); |
| 764 | |
| 765 | static TypeInfo JoinTypes(TypeInfo x, TypeInfo y); |
| 766 | }; |
| 767 | |
| 768 | |
| 769 | class CompareIC: public IC { |
| 770 | public: |
| 771 | enum State { |
| 772 | UNINITIALIZED, |
| 773 | SMIS, |
| 774 | HEAP_NUMBERS, |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 775 | SYMBOLS, |
| 776 | STRINGS, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 777 | OBJECTS, |
Ben Murdoch | c7cc028 | 2012-03-05 14:35:55 +0000 | [diff] [blame] | 778 | KNOWN_OBJECTS, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 779 | GENERIC |
| 780 | }; |
| 781 | |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 782 | CompareIC(Isolate* isolate, Token::Value op) |
| 783 | : IC(EXTRA_CALL_FRAME, isolate), op_(op) { } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 784 | |
| 785 | // Update the inline cache for the given operands. |
| 786 | void UpdateCaches(Handle<Object> x, Handle<Object> y); |
| 787 | |
| 788 | // Factory method for getting an uninitialized compare stub. |
| 789 | static Handle<Code> GetUninitialized(Token::Value op); |
| 790 | |
| 791 | // Helper function for computing the condition for a compare operation. |
| 792 | static Condition ComputeCondition(Token::Value op); |
| 793 | |
| 794 | // Helper function for determining the state of a compare IC. |
| 795 | static State ComputeState(Code* target); |
| 796 | |
| 797 | static const char* GetStateName(State state); |
| 798 | |
| 799 | private: |
| 800 | State TargetState(State state, bool has_inlined_smi_code, |
| 801 | Handle<Object> x, Handle<Object> y); |
| 802 | |
| 803 | bool strict() const { return op_ == Token::EQ_STRICT; } |
| 804 | Condition GetCondition() const { return ComputeCondition(op_); } |
| 805 | State GetState() { return ComputeState(target()); } |
| 806 | |
| 807 | Token::Value op_; |
| 808 | }; |
| 809 | |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 810 | |
| 811 | class ToBooleanIC: public IC { |
| 812 | public: |
| 813 | explicit ToBooleanIC(Isolate* isolate) : IC(NO_EXTRA_FRAME, isolate) { } |
| 814 | |
| 815 | void patch(Code* code); |
| 816 | }; |
| 817 | |
| 818 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 819 | // Helper for BinaryOpIC and CompareIC. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 820 | void PatchInlinedSmiCode(Address address); |
| 821 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 822 | } } // namespace v8::internal |
| 823 | |
| 824 | #endif // V8_IC_H_ |