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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_ARM | 5 #if V8_TARGET_ARCH_ARM |
6 | 6 |
7 #include "src/ast/scopes.h" | 7 #include "src/ast/scopes.h" |
8 #include "src/code-factory.h" | 8 #include "src/code-factory.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/codegen.h" | 10 #include "src/codegen.h" |
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1093 __ mov(r0, Operand(Smi::FromInt(0))); | 1093 __ mov(r0, Operand(Smi::FromInt(0))); |
1094 // Push enumeration cache, enumeration cache length (as smi) and zero. | 1094 // Push enumeration cache, enumeration cache length (as smi) and zero. |
1095 __ Push(r2, r1, r0); | 1095 __ Push(r2, r1, r0); |
1096 __ jmp(&loop); | 1096 __ jmp(&loop); |
1097 | 1097 |
1098 __ bind(&no_descriptors); | 1098 __ bind(&no_descriptors); |
1099 __ Drop(1); | 1099 __ Drop(1); |
1100 __ jmp(&exit); | 1100 __ jmp(&exit); |
1101 | 1101 |
1102 // We got a fixed array in register r0. Iterate through that. | 1102 // We got a fixed array in register r0. Iterate through that. |
1103 Label non_proxy; | |
1104 __ bind(&fixed_array); | 1103 __ bind(&fixed_array); |
1105 | 1104 |
1106 __ EmitLoadTypeFeedbackVector(r1); | 1105 __ EmitLoadTypeFeedbackVector(r1); |
1107 __ mov(r2, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate()))); | 1106 __ mov(r2, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate()))); |
1108 int vector_index = SmiFromSlot(slot)->value(); | 1107 int vector_index = SmiFromSlot(slot)->value(); |
1109 __ str(r2, FieldMemOperand(r1, FixedArray::OffsetOfElementAt(vector_index))); | 1108 __ str(r2, FieldMemOperand(r1, FixedArray::OffsetOfElementAt(vector_index))); |
1110 | 1109 __ mov(r1, Operand(Smi::FromInt(1))); // Smi(1) indicates slow check |
1111 __ mov(r1, Operand(Smi::FromInt(1))); // Smi indicates slow check | |
1112 __ ldr(r2, MemOperand(sp, 0 * kPointerSize)); // Get enumerated object | |
1113 STATIC_ASSERT(JS_PROXY_TYPE == FIRST_JS_RECEIVER_TYPE); | |
1114 __ CompareObjectType(r2, r3, r3, JS_PROXY_TYPE); | |
1115 __ b(gt, &non_proxy); | |
1116 __ mov(r1, Operand(Smi::FromInt(0))); // Zero indicates proxy | |
1117 __ bind(&non_proxy); | |
1118 __ Push(r1, r0); // Smi and array | 1110 __ Push(r1, r0); // Smi and array |
1119 __ ldr(r1, FieldMemOperand(r0, FixedArray::kLengthOffset)); | 1111 __ ldr(r1, FieldMemOperand(r0, FixedArray::kLengthOffset)); |
1120 __ mov(r0, Operand(Smi::FromInt(0))); | 1112 __ mov(r0, Operand(Smi::FromInt(0))); |
1121 __ Push(r1, r0); // Fixed array length (as smi) and initial index. | 1113 __ Push(r1, r0); // Fixed array length (as smi) and initial index. |
1122 | 1114 |
1123 // Generate code for doing the condition check. | 1115 // Generate code for doing the condition check. |
1124 __ bind(&loop); | 1116 __ bind(&loop); |
1125 SetExpressionAsStatementPosition(stmt->each()); | 1117 SetExpressionAsStatementPosition(stmt->each()); |
1126 | 1118 |
1127 // Load the current count to r0, load the length to r1. | 1119 // Load the current count to r0, load the length to r1. |
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1139 __ ldr(r2, MemOperand(sp, 3 * kPointerSize)); | 1131 __ ldr(r2, MemOperand(sp, 3 * kPointerSize)); |
1140 | 1132 |
1141 // Check if the expected map still matches that of the enumerable. | 1133 // Check if the expected map still matches that of the enumerable. |
1142 // If not, we may have to filter the key. | 1134 // If not, we may have to filter the key. |
1143 Label update_each; | 1135 Label update_each; |
1144 __ ldr(r1, MemOperand(sp, 4 * kPointerSize)); | 1136 __ ldr(r1, MemOperand(sp, 4 * kPointerSize)); |
1145 __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset)); | 1137 __ ldr(r4, FieldMemOperand(r1, HeapObject::kMapOffset)); |
1146 __ cmp(r4, Operand(r2)); | 1138 __ cmp(r4, Operand(r2)); |
1147 __ b(eq, &update_each); | 1139 __ b(eq, &update_each); |
1148 | 1140 |
1149 // For proxies, no filtering is done. | |
1150 // TODO(rossberg): What if only a prototype is a proxy? Not specified yet. | |
1151 __ cmp(r2, Operand(Smi::FromInt(0))); | |
1152 __ b(eq, &update_each); | |
1153 | |
1154 // Convert the entry to a string or (smi) 0 if it isn't a property | 1141 // Convert the entry to a string or (smi) 0 if it isn't a property |
1155 // any more. If the property has been removed while iterating, we | 1142 // any more. If the property has been removed while iterating, we |
1156 // just skip it. | 1143 // just skip it. |
1157 __ push(r1); // Enumerable. | 1144 __ push(r1); // Enumerable. |
1158 __ push(r3); // Current entry. | 1145 __ push(r3); // Current entry. |
1159 __ CallRuntime(Runtime::kForInFilter, 2); | 1146 __ CallRuntime(Runtime::kForInFilter, 2); |
1160 PrepareForBailoutForId(stmt->FilterId(), TOS_REG); | 1147 PrepareForBailoutForId(stmt->FilterId(), TOS_REG); |
1161 __ mov(r3, Operand(r0)); | 1148 __ mov(r3, Operand(r0)); |
1162 __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); | 1149 __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
1163 __ cmp(r0, ip); | 1150 __ cmp(r0, ip); |
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4961 DCHECK(interrupt_address == | 4948 DCHECK(interrupt_address == |
4962 isolate->builtins()->OsrAfterStackCheck()->entry()); | 4949 isolate->builtins()->OsrAfterStackCheck()->entry()); |
4963 return OSR_AFTER_STACK_CHECK; | 4950 return OSR_AFTER_STACK_CHECK; |
4964 } | 4951 } |
4965 | 4952 |
4966 | 4953 |
4967 } // namespace internal | 4954 } // namespace internal |
4968 } // namespace v8 | 4955 } // namespace v8 |
4969 | 4956 |
4970 #endif // V8_TARGET_ARCH_ARM | 4957 #endif // V8_TARGET_ARCH_ARM |
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