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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_ARCH_ARM) | 6 #if defined(TARGET_ARCH_ARM) |
7 | 7 |
8 #include "vm/assembler.h" | 8 #include "vm/assembler.h" |
9 #include "vm/code_generator.h" | 9 #include "vm/code_generator.h" |
10 #include "vm/cpu.h" | 10 #include "vm/cpu.h" |
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1076 // The generated code is different if the class is parameterized. | 1076 // The generated code is different if the class is parameterized. |
1077 const bool is_cls_parameterized = cls.NumTypeArguments() > 0; | 1077 const bool is_cls_parameterized = cls.NumTypeArguments() > 0; |
1078 ASSERT(!is_cls_parameterized || | 1078 ASSERT(!is_cls_parameterized || |
1079 (cls.type_arguments_field_offset() != Class::kNoTypeArguments)); | 1079 (cls.type_arguments_field_offset() != Class::kNoTypeArguments)); |
1080 // kInlineInstanceSize is a constant used as a threshold for determining | 1080 // kInlineInstanceSize is a constant used as a threshold for determining |
1081 // when the object initialization should be done as a loop or as | 1081 // when the object initialization should be done as a loop or as |
1082 // straight line code. | 1082 // straight line code. |
1083 const int kInlineInstanceSize = 12; | 1083 const int kInlineInstanceSize = 12; |
1084 const intptr_t instance_size = cls.instance_size(); | 1084 const intptr_t instance_size = cls.instance_size(); |
1085 ASSERT(instance_size > 0); | 1085 ASSERT(instance_size > 0); |
1086 if (FLAG_inline_alloc && Heap::IsAllocatableInNewSpace(instance_size)) { | 1086 if (FLAG_inline_alloc && Heap::IsAllocatableInNewSpace(instance_size) && |
| 1087 !cls.trace_allocation()) { |
1087 Label slow_case; | 1088 Label slow_case; |
1088 // Allocate the object and update top to point to | 1089 // Allocate the object and update top to point to |
1089 // next object start and initialize the allocated object. | 1090 // next object start and initialize the allocated object. |
1090 Heap* heap = Isolate::Current()->heap(); | 1091 Heap* heap = Isolate::Current()->heap(); |
1091 Heap::Space space = heap->SpaceForAllocation(cls.id()); | 1092 Heap::Space space = heap->SpaceForAllocation(cls.id()); |
1092 __ LoadImmediate(R5, heap->TopAddress(space)); | 1093 __ LoadImmediate(R5, heap->TopAddress(space)); |
1093 __ ldr(R0, Address(R5, 0)); | 1094 __ ldr(R0, Address(R5, 0)); |
1094 __ AddImmediate(R1, R0, instance_size); | 1095 __ AddImmediate(R1, R0, instance_size); |
1095 // Check if the allocation fits into the remaining space. | 1096 // Check if the allocation fits into the remaining space. |
1096 // R0: potential new object start. | 1097 // R0: potential new object start. |
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2122 // Result: | 2123 // Result: |
2123 // R1: entry point. | 2124 // R1: entry point. |
2124 void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) { | 2125 void StubCode::GenerateMegamorphicLookupStub(Assembler* assembler) { |
2125 EmitMegamorphicLookup(assembler, R0, R1, R1); | 2126 EmitMegamorphicLookup(assembler, R0, R1, R1); |
2126 __ Ret(); | 2127 __ Ret(); |
2127 } | 2128 } |
2128 | 2129 |
2129 } // namespace dart | 2130 } // namespace dart |
2130 | 2131 |
2131 #endif // defined TARGET_ARCH_ARM | 2132 #endif // defined TARGET_ARCH_ARM |
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