OLD | NEW |
1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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 |
(...skipping 3096 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
3107 ZoneList<Expression*>* args = expr->arguments(); | 3107 ZoneList<Expression*>* args = expr->arguments(); |
3108 ASSERT(args->length() == 3); | 3108 ASSERT(args->length() == 3); |
3109 VisitForStackValue(args->at(0)); | 3109 VisitForStackValue(args->at(0)); |
3110 VisitForStackValue(args->at(1)); | 3110 VisitForStackValue(args->at(1)); |
3111 VisitForStackValue(args->at(2)); | 3111 VisitForStackValue(args->at(2)); |
3112 __ CallStub(&stub); | 3112 __ CallStub(&stub); |
3113 context()->Plug(rax); | 3113 context()->Plug(rax); |
3114 } | 3114 } |
3115 | 3115 |
3116 | 3116 |
3117 void FullCodeGenerator::EmitSwapElements(CallRuntime* expr) { | |
3118 ZoneList<Expression*>* args = expr->arguments(); | |
3119 ASSERT(args->length() == 3); | |
3120 VisitForStackValue(args->at(0)); | |
3121 VisitForStackValue(args->at(1)); | |
3122 VisitForStackValue(args->at(2)); | |
3123 Label done; | |
3124 Label slow_case; | |
3125 Register object = rax; | |
3126 Register index_1 = rbx; | |
3127 Register index_2 = rcx; | |
3128 Register elements = rdi; | |
3129 Register temp = rdx; | |
3130 __ movq(object, Operand(rsp, 2 * kPointerSize)); | |
3131 // Fetch the map and check if array is in fast case. | |
3132 // Check that object doesn't require security checks and | |
3133 // has no indexed interceptor. | |
3134 __ CmpObjectType(object, JS_ARRAY_TYPE, temp); | |
3135 __ j(not_equal, &slow_case); | |
3136 __ testb(FieldOperand(temp, Map::kBitFieldOffset), | |
3137 Immediate(KeyedLoadIC::kSlowCaseBitFieldMask)); | |
3138 __ j(not_zero, &slow_case); | |
3139 | |
3140 // Check the object's elements are in fast case and writable. | |
3141 __ movq(elements, FieldOperand(object, JSObject::kElementsOffset)); | |
3142 __ CompareRoot(FieldOperand(elements, HeapObject::kMapOffset), | |
3143 Heap::kFixedArrayMapRootIndex); | |
3144 __ j(not_equal, &slow_case); | |
3145 | |
3146 // Check that both indices are smis. | |
3147 __ movq(index_1, Operand(rsp, 1 * kPointerSize)); | |
3148 __ movq(index_2, Operand(rsp, 0 * kPointerSize)); | |
3149 __ JumpIfNotBothSmi(index_1, index_2, &slow_case); | |
3150 | |
3151 // Check that both indices are valid. | |
3152 // The JSArray length field is a smi since the array is in fast case mode. | |
3153 __ movq(temp, FieldOperand(object, JSArray::kLengthOffset)); | |
3154 __ SmiCompare(temp, index_1); | |
3155 __ j(below_equal, &slow_case); | |
3156 __ SmiCompare(temp, index_2); | |
3157 __ j(below_equal, &slow_case); | |
3158 | |
3159 __ SmiToInteger32(index_1, index_1); | |
3160 __ SmiToInteger32(index_2, index_2); | |
3161 // Bring addresses into index1 and index2. | |
3162 __ lea(index_1, FieldOperand(elements, index_1, times_pointer_size, | |
3163 FixedArray::kHeaderSize)); | |
3164 __ lea(index_2, FieldOperand(elements, index_2, times_pointer_size, | |
3165 FixedArray::kHeaderSize)); | |
3166 | |
3167 // Swap elements. Use object and temp as scratch registers. | |
3168 __ movq(object, Operand(index_1, 0)); | |
3169 __ movq(temp, Operand(index_2, 0)); | |
3170 __ movq(Operand(index_2, 0), object); | |
3171 __ movq(Operand(index_1, 0), temp); | |
3172 | |
3173 Label no_remembered_set; | |
3174 __ CheckPageFlag(elements, | |
3175 temp, | |
3176 1 << MemoryChunk::SCAN_ON_SCAVENGE, | |
3177 not_zero, | |
3178 &no_remembered_set, | |
3179 Label::kNear); | |
3180 // Possible optimization: do a check that both values are Smis | |
3181 // (or them and test against Smi mask.) | |
3182 | |
3183 // We are swapping two objects in an array and the incremental marker never | |
3184 // pauses in the middle of scanning a single object. Therefore the | |
3185 // incremental marker is not disturbed, so we don't need to call the | |
3186 // RecordWrite stub that notifies the incremental marker. | |
3187 __ RememberedSetHelper(elements, | |
3188 index_1, | |
3189 temp, | |
3190 kDontSaveFPRegs, | |
3191 MacroAssembler::kFallThroughAtEnd); | |
3192 __ RememberedSetHelper(elements, | |
3193 index_2, | |
3194 temp, | |
3195 kDontSaveFPRegs, | |
3196 MacroAssembler::kFallThroughAtEnd); | |
3197 | |
3198 __ bind(&no_remembered_set); | |
3199 | |
3200 // We are done. Drop elements from the stack, and return undefined. | |
3201 __ addq(rsp, Immediate(3 * kPointerSize)); | |
3202 __ LoadRoot(rax, Heap::kUndefinedValueRootIndex); | |
3203 __ jmp(&done); | |
3204 | |
3205 __ bind(&slow_case); | |
3206 __ CallRuntime(Runtime::kSwapElements, 3); | |
3207 | |
3208 __ bind(&done); | |
3209 context()->Plug(rax); | |
3210 } | |
3211 | |
3212 | |
3213 void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) { | 3117 void FullCodeGenerator::EmitGetFromCache(CallRuntime* expr) { |
3214 ZoneList<Expression*>* args = expr->arguments(); | 3118 ZoneList<Expression*>* args = expr->arguments(); |
3215 ASSERT_EQ(2, args->length()); | 3119 ASSERT_EQ(2, args->length()); |
3216 | 3120 |
3217 ASSERT_NE(NULL, args->at(0)->AsLiteral()); | 3121 ASSERT_NE(NULL, args->at(0)->AsLiteral()); |
3218 int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->handle()))->value(); | 3122 int cache_id = Smi::cast(*(args->at(0)->AsLiteral()->handle()))->value(); |
3219 | 3123 |
3220 Handle<FixedArray> jsfunction_result_caches( | 3124 Handle<FixedArray> jsfunction_result_caches( |
3221 isolate()->global_context()->jsfunction_result_caches()); | 3125 isolate()->global_context()->jsfunction_result_caches()); |
3222 if (jsfunction_result_caches->length() <= cache_id) { | 3126 if (jsfunction_result_caches->length() <= cache_id) { |
(...skipping 1129 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
4352 *context_length = 0; | 4256 *context_length = 0; |
4353 return previous_; | 4257 return previous_; |
4354 } | 4258 } |
4355 | 4259 |
4356 | 4260 |
4357 #undef __ | 4261 #undef __ |
4358 | 4262 |
4359 } } // namespace v8::internal | 4263 } } // namespace v8::internal |
4360 | 4264 |
4361 #endif // V8_TARGET_ARCH_X64 | 4265 #endif // V8_TARGET_ARCH_X64 |
OLD | NEW |