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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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_ARM64 | 5 #if V8_TARGET_ARCH_ARM64 |
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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1039 __ JumpIfObjectType(x0, x10, x11, FIRST_JS_RECEIVER_TYPE, &done_convert, ge); | 1039 __ JumpIfObjectType(x0, x10, x11, FIRST_JS_RECEIVER_TYPE, &done_convert, ge); |
1040 __ Bind(&convert); | 1040 __ Bind(&convert); |
1041 ToObjectStub stub(isolate()); | 1041 ToObjectStub stub(isolate()); |
1042 __ CallStub(&stub); | 1042 __ CallStub(&stub); |
1043 __ Bind(&done_convert); | 1043 __ Bind(&done_convert); |
1044 PrepareForBailoutForId(stmt->ToObjectId(), TOS_REG); | 1044 PrepareForBailoutForId(stmt->ToObjectId(), TOS_REG); |
1045 __ Push(x0); | 1045 __ Push(x0); |
1046 | 1046 |
1047 // Check for proxies. | 1047 // Check for proxies. |
1048 Label call_runtime; | 1048 Label call_runtime; |
1049 STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_JS_RECEIVER_TYPE); | 1049 __ JumpIfObjectType(x0, x10, x11, JS_PROXY_TYPE, &call_runtime, eq); |
1050 __ JumpIfObjectType(x0, x10, x11, LAST_JS_PROXY_TYPE, &call_runtime, le); | |
1051 | 1050 |
1052 // Check cache validity in generated code. This is a fast case for | 1051 // Check cache validity in generated code. This is a fast case for |
1053 // the JSObject::IsSimpleEnum cache validity checks. If we cannot | 1052 // the JSObject::IsSimpleEnum cache validity checks. If we cannot |
1054 // guarantee cache validity, call the runtime system to check cache | 1053 // guarantee cache validity, call the runtime system to check cache |
1055 // validity or get the property names in a fixed array. | 1054 // validity or get the property names in a fixed array. |
1056 __ CheckEnumCache(x0, null_value, x10, x11, x12, x13, &call_runtime); | 1055 __ CheckEnumCache(x0, null_value, x10, x11, x12, x13, &call_runtime); |
1057 | 1056 |
1058 // The enum cache is valid. Load the map of the object being | 1057 // The enum cache is valid. Load the map of the object being |
1059 // iterated over and use the cache for the iteration. | 1058 // iterated over and use the cache for the iteration. |
1060 Label use_cache; | 1059 Label use_cache; |
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1098 // We got a fixed array in register x0. Iterate through that. | 1097 // We got a fixed array in register x0. Iterate through that. |
1099 __ Bind(&fixed_array); | 1098 __ Bind(&fixed_array); |
1100 | 1099 |
1101 __ EmitLoadTypeFeedbackVector(x1); | 1100 __ EmitLoadTypeFeedbackVector(x1); |
1102 __ Mov(x10, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate()))); | 1101 __ Mov(x10, Operand(TypeFeedbackVector::MegamorphicSentinel(isolate()))); |
1103 int vector_index = SmiFromSlot(slot)->value(); | 1102 int vector_index = SmiFromSlot(slot)->value(); |
1104 __ Str(x10, FieldMemOperand(x1, FixedArray::OffsetOfElementAt(vector_index))); | 1103 __ Str(x10, FieldMemOperand(x1, FixedArray::OffsetOfElementAt(vector_index))); |
1105 | 1104 |
1106 __ Mov(x1, Smi::FromInt(1)); // Smi indicates slow check. | 1105 __ Mov(x1, Smi::FromInt(1)); // Smi indicates slow check. |
1107 __ Peek(x10, 0); // Get enumerated object. | 1106 __ Peek(x10, 0); // Get enumerated object. |
1108 STATIC_ASSERT(FIRST_JS_PROXY_TYPE == FIRST_JS_RECEIVER_TYPE); | 1107 STATIC_ASSERT(JS_PROXY_TYPE == FIRST_JS_RECEIVER_TYPE); |
1109 // TODO(all): similar check was done already. Can we avoid it here? | 1108 __ CompareObjectType(x10, x11, x12, JS_PROXY_TYPE); |
1110 __ CompareObjectType(x10, x11, x12, LAST_JS_PROXY_TYPE); | |
1111 DCHECK(Smi::FromInt(0) == 0); | 1109 DCHECK(Smi::FromInt(0) == 0); |
1112 __ CzeroX(x1, le); // Zero indicates proxy. | 1110 __ CzeroX(x1, eq); // Zero indicates proxy. |
1113 __ Ldr(x2, FieldMemOperand(x0, FixedArray::kLengthOffset)); | 1111 __ Ldr(x2, FieldMemOperand(x0, FixedArray::kLengthOffset)); |
1114 // Smi and array, fixed array length (as smi) and initial index. | 1112 // Smi and array, fixed array length (as smi) and initial index. |
1115 __ Push(x1, x0, x2, xzr); | 1113 __ Push(x1, x0, x2, xzr); |
1116 | 1114 |
1117 // Generate code for doing the condition check. | 1115 // Generate code for doing the condition check. |
1118 __ Bind(&loop); | 1116 __ Bind(&loop); |
1119 SetExpressionAsStatementPosition(stmt->each()); | 1117 SetExpressionAsStatementPosition(stmt->each()); |
1120 | 1118 |
1121 // Load the current count to x0, load the length to x1. | 1119 // Load the current count to x0, load the length to x1. |
1122 __ PeekPair(x0, x1, 0); | 1120 __ PeekPair(x0, x1, 0); |
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2958 VisitForAccumulatorValue(args->at(0)); | 2956 VisitForAccumulatorValue(args->at(0)); |
2959 | 2957 |
2960 Label materialize_true, materialize_false; | 2958 Label materialize_true, materialize_false; |
2961 Label* if_true = NULL; | 2959 Label* if_true = NULL; |
2962 Label* if_false = NULL; | 2960 Label* if_false = NULL; |
2963 Label* fall_through = NULL; | 2961 Label* fall_through = NULL; |
2964 context()->PrepareTest(&materialize_true, &materialize_false, &if_true, | 2962 context()->PrepareTest(&materialize_true, &materialize_false, &if_true, |
2965 &if_false, &fall_through); | 2963 &if_false, &fall_through); |
2966 | 2964 |
2967 __ JumpIfSmi(x0, if_false); | 2965 __ JumpIfSmi(x0, if_false); |
2968 Register map = x10; | 2966 __ CompareObjectType(x0, x10, x11, JS_PROXY_TYPE); |
2969 Register type_reg = x11; | |
2970 __ Ldr(map, FieldMemOperand(x0, HeapObject::kMapOffset)); | |
2971 __ Ldrb(type_reg, FieldMemOperand(map, Map::kInstanceTypeOffset)); | |
2972 __ Sub(type_reg, type_reg, Operand(FIRST_JS_PROXY_TYPE)); | |
2973 __ Cmp(type_reg, Operand(LAST_JS_PROXY_TYPE - FIRST_JS_PROXY_TYPE)); | |
2974 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); | 2967 PrepareForBailoutBeforeSplit(expr, true, if_true, if_false); |
2975 Split(ls, if_true, if_false, fall_through); | 2968 Split(eq, if_true, if_false, fall_through); |
2976 | 2969 |
2977 context()->Plug(if_true, if_false); | 2970 context()->Plug(if_true, if_false); |
2978 } | 2971 } |
2979 | 2972 |
2980 | 2973 |
2981 void FullCodeGenerator::EmitObjectEquals(CallRuntime* expr) { | 2974 void FullCodeGenerator::EmitObjectEquals(CallRuntime* expr) { |
2982 ZoneList<Expression*>* args = expr->arguments(); | 2975 ZoneList<Expression*>* args = expr->arguments(); |
2983 DCHECK(args->length() == 2); | 2976 DCHECK(args->length() == 2); |
2984 | 2977 |
2985 // Load the two objects into registers and perform the comparison. | 2978 // Load the two objects into registers and perform the comparison. |
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4941 } | 4934 } |
4942 | 4935 |
4943 return INTERRUPT; | 4936 return INTERRUPT; |
4944 } | 4937 } |
4945 | 4938 |
4946 | 4939 |
4947 } // namespace internal | 4940 } // namespace internal |
4948 } // namespace v8 | 4941 } // namespace v8 |
4949 | 4942 |
4950 #endif // V8_TARGET_ARCH_ARM64 | 4943 #endif // V8_TARGET_ARCH_ARM64 |
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