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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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2176 // Non-initializing assignments to consts are ignored. | 2176 // Non-initializing assignments to consts are ignored. |
2177 } | 2177 } |
2178 | 2178 |
2179 | 2179 |
2180 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { | 2180 void FullCodeGenerator::EmitNamedPropertyAssignment(Assignment* expr) { |
2181 // Assignment to a property, using a named store IC. | 2181 // Assignment to a property, using a named store IC. |
2182 Property* prop = expr->target()->AsProperty(); | 2182 Property* prop = expr->target()->AsProperty(); |
2183 ASSERT(prop != NULL); | 2183 ASSERT(prop != NULL); |
2184 ASSERT(prop->key()->AsLiteral() != NULL); | 2184 ASSERT(prop->key()->AsLiteral() != NULL); |
2185 | 2185 |
| 2186 // If the assignment starts a block of assignments to the same object, |
| 2187 // change to slow case to avoid the quadratic behavior of repeatedly |
| 2188 // adding fast properties. |
| 2189 if (expr->starts_initialization_block()) { |
| 2190 __ push(result_register()); |
| 2191 __ ldr(ip, MemOperand(sp, kPointerSize)); // Receiver is now under value. |
| 2192 __ push(ip); |
| 2193 __ CallRuntime(Runtime::kToSlowProperties, 1); |
| 2194 __ pop(result_register()); |
| 2195 } |
| 2196 |
2186 // Record source code position before IC call. | 2197 // Record source code position before IC call. |
2187 SetSourcePosition(expr->position()); | 2198 SetSourcePosition(expr->position()); |
2188 __ mov(r2, Operand(prop->key()->AsLiteral()->handle())); | 2199 __ mov(r2, Operand(prop->key()->AsLiteral()->handle())); |
2189 __ pop(r1); | 2200 // Load receiver to r1. Leave a copy in the stack if needed for turning the |
| 2201 // receiver into fast case. |
| 2202 if (expr->ends_initialization_block()) { |
| 2203 __ ldr(r1, MemOperand(sp)); |
| 2204 } else { |
| 2205 __ pop(r1); |
| 2206 } |
2190 | 2207 |
2191 Handle<Code> ic = is_classic_mode() | 2208 Handle<Code> ic = is_classic_mode() |
2192 ? isolate()->builtins()->StoreIC_Initialize() | 2209 ? isolate()->builtins()->StoreIC_Initialize() |
2193 : isolate()->builtins()->StoreIC_Initialize_Strict(); | 2210 : isolate()->builtins()->StoreIC_Initialize_Strict(); |
2194 CallIC(ic, RelocInfo::CODE_TARGET, expr->AssignmentFeedbackId()); | 2211 CallIC(ic, RelocInfo::CODE_TARGET, expr->AssignmentFeedbackId()); |
2195 | 2212 |
| 2213 // If the assignment ends an initialization block, revert to fast case. |
| 2214 if (expr->ends_initialization_block()) { |
| 2215 __ push(r0); // Result of assignment, saved even if not needed. |
| 2216 // Receiver is under the result value. |
| 2217 __ ldr(ip, MemOperand(sp, kPointerSize)); |
| 2218 __ push(ip); |
| 2219 __ CallRuntime(Runtime::kToFastProperties, 1); |
| 2220 __ pop(r0); |
| 2221 __ Drop(1); |
| 2222 } |
2196 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | 2223 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
2197 context()->Plug(r0); | 2224 context()->Plug(r0); |
2198 } | 2225 } |
2199 | 2226 |
2200 | 2227 |
2201 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { | 2228 void FullCodeGenerator::EmitKeyedPropertyAssignment(Assignment* expr) { |
2202 // Assignment to a property, using a keyed store IC. | 2229 // Assignment to a property, using a keyed store IC. |
2203 | 2230 |
| 2231 // If the assignment starts a block of assignments to the same object, |
| 2232 // change to slow case to avoid the quadratic behavior of repeatedly |
| 2233 // adding fast properties. |
| 2234 if (expr->starts_initialization_block()) { |
| 2235 __ push(result_register()); |
| 2236 // Receiver is now under the key and value. |
| 2237 __ ldr(ip, MemOperand(sp, 2 * kPointerSize)); |
| 2238 __ push(ip); |
| 2239 __ CallRuntime(Runtime::kToSlowProperties, 1); |
| 2240 __ pop(result_register()); |
| 2241 } |
| 2242 |
2204 // Record source code position before IC call. | 2243 // Record source code position before IC call. |
2205 SetSourcePosition(expr->position()); | 2244 SetSourcePosition(expr->position()); |
2206 __ pop(r1); // Key. | 2245 __ pop(r1); // Key. |
2207 __ pop(r2); | 2246 // Load receiver to r2. Leave a copy in the stack if needed for turning the |
| 2247 // receiver into fast case. |
| 2248 if (expr->ends_initialization_block()) { |
| 2249 __ ldr(r2, MemOperand(sp)); |
| 2250 } else { |
| 2251 __ pop(r2); |
| 2252 } |
2208 | 2253 |
2209 Handle<Code> ic = is_classic_mode() | 2254 Handle<Code> ic = is_classic_mode() |
2210 ? isolate()->builtins()->KeyedStoreIC_Initialize() | 2255 ? isolate()->builtins()->KeyedStoreIC_Initialize() |
2211 : isolate()->builtins()->KeyedStoreIC_Initialize_Strict(); | 2256 : isolate()->builtins()->KeyedStoreIC_Initialize_Strict(); |
2212 CallIC(ic, RelocInfo::CODE_TARGET, expr->AssignmentFeedbackId()); | 2257 CallIC(ic, RelocInfo::CODE_TARGET, expr->AssignmentFeedbackId()); |
2213 | 2258 |
| 2259 // If the assignment ends an initialization block, revert to fast case. |
| 2260 if (expr->ends_initialization_block()) { |
| 2261 __ push(r0); // Result of assignment, saved even if not needed. |
| 2262 // Receiver is under the result value. |
| 2263 __ ldr(ip, MemOperand(sp, kPointerSize)); |
| 2264 __ push(ip); |
| 2265 __ CallRuntime(Runtime::kToFastProperties, 1); |
| 2266 __ pop(r0); |
| 2267 __ Drop(1); |
| 2268 } |
2214 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); | 2269 PrepareForBailoutForId(expr->AssignmentId(), TOS_REG); |
2215 context()->Plug(r0); | 2270 context()->Plug(r0); |
2216 } | 2271 } |
2217 | 2272 |
2218 | 2273 |
2219 void FullCodeGenerator::VisitProperty(Property* expr) { | 2274 void FullCodeGenerator::VisitProperty(Property* expr) { |
2220 Comment cmnt(masm_, "[ Property"); | 2275 Comment cmnt(masm_, "[ Property"); |
2221 Expression* key = expr->key(); | 2276 Expression* key = expr->key(); |
2222 | 2277 |
2223 if (key->IsPropertyName()) { | 2278 if (key->IsPropertyName()) { |
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4529 *context_length = 0; | 4584 *context_length = 0; |
4530 return previous_; | 4585 return previous_; |
4531 } | 4586 } |
4532 | 4587 |
4533 | 4588 |
4534 #undef __ | 4589 #undef __ |
4535 | 4590 |
4536 } } // namespace v8::internal | 4591 } } // namespace v8::internal |
4537 | 4592 |
4538 #endif // V8_TARGET_ARCH_ARM | 4593 #endif // V8_TARGET_ARCH_ARM |
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