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Issue 2965723002: VM: Reland Inline instance object hash code into object header on 64bit. (Closed)
Patch Set: Fix snapshot incompatibility that sank Flutter Gallery Created 3 years, 5 months ago
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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" // NOLINT 5 #include "vm/globals.h" // NOLINT
6 #if defined(TARGET_ARCH_IA32) 6 #if defined(TARGET_ARCH_IA32)
7 7
8 #include "vm/assembler.h" 8 #include "vm/assembler.h"
9 #include "vm/cpu.h" 9 #include "vm/cpu.h"
10 #include "vm/heap.h" 10 #include "vm/heap.h"
(...skipping 2625 matching lines...) Expand 10 before | Expand all | Expand 10 after
2636 addl(instance_reg, Immediate(instance_size)); 2636 addl(instance_reg, Immediate(instance_size));
2637 // instance_reg: potential next object start. 2637 // instance_reg: potential next object start.
2638 cmpl(instance_reg, Address(temp_reg, Heap::EndOffset(space))); 2638 cmpl(instance_reg, Address(temp_reg, Heap::EndOffset(space)));
2639 j(ABOVE_EQUAL, failure, near_jump); 2639 j(ABOVE_EQUAL, failure, near_jump);
2640 // Successfully allocated the object, now update top to point to 2640 // Successfully allocated the object, now update top to point to
2641 // next object start and store the class in the class field of object. 2641 // next object start and store the class in the class field of object.
2642 movl(Address(temp_reg, Heap::TopOffset(space)), instance_reg); 2642 movl(Address(temp_reg, Heap::TopOffset(space)), instance_reg);
2643 NOT_IN_PRODUCT(UpdateAllocationStats(cls.id(), temp_reg, space)); 2643 NOT_IN_PRODUCT(UpdateAllocationStats(cls.id(), temp_reg, space));
2644 ASSERT(instance_size >= kHeapObjectTag); 2644 ASSERT(instance_size >= kHeapObjectTag);
2645 subl(instance_reg, Immediate(instance_size - kHeapObjectTag)); 2645 subl(instance_reg, Immediate(instance_size - kHeapObjectTag));
2646 uword tags = 0; 2646 uint32_t tags = 0;
2647 tags = RawObject::SizeTag::update(instance_size, tags); 2647 tags = RawObject::SizeTag::update(instance_size, tags);
2648 ASSERT(cls.id() != kIllegalCid); 2648 ASSERT(cls.id() != kIllegalCid);
2649 tags = RawObject::ClassIdTag::update(cls.id(), tags); 2649 tags = RawObject::ClassIdTag::update(cls.id(), tags);
2650 movl(FieldAddress(instance_reg, Object::tags_offset()), Immediate(tags)); 2650 movl(FieldAddress(instance_reg, Object::tags_offset()), Immediate(tags));
2651 } else { 2651 } else {
2652 jmp(failure); 2652 jmp(failure);
2653 } 2653 }
2654 } 2654 }
2655 2655
2656 2656
(...skipping 26 matching lines...) Expand all
2683 j(ABOVE_EQUAL, failure); 2683 j(ABOVE_EQUAL, failure);
2684 2684
2685 // Successfully allocated the object(s), now update top to point to 2685 // Successfully allocated the object(s), now update top to point to
2686 // next object start and initialize the object. 2686 // next object start and initialize the object.
2687 movl(Address(temp_reg, Heap::TopOffset(space)), end_address); 2687 movl(Address(temp_reg, Heap::TopOffset(space)), end_address);
2688 addl(instance, Immediate(kHeapObjectTag)); 2688 addl(instance, Immediate(kHeapObjectTag));
2689 NOT_IN_PRODUCT( 2689 NOT_IN_PRODUCT(
2690 UpdateAllocationStatsWithSize(cid, instance_size, temp_reg, space)); 2690 UpdateAllocationStatsWithSize(cid, instance_size, temp_reg, space));
2691 2691
2692 // Initialize the tags. 2692 // Initialize the tags.
2693 uword tags = 0; 2693 uint32_t tags = 0;
2694 tags = RawObject::ClassIdTag::update(cid, tags); 2694 tags = RawObject::ClassIdTag::update(cid, tags);
2695 tags = RawObject::SizeTag::update(instance_size, tags); 2695 tags = RawObject::SizeTag::update(instance_size, tags);
2696 movl(FieldAddress(instance, Object::tags_offset()), Immediate(tags)); 2696 movl(FieldAddress(instance, Object::tags_offset()), Immediate(tags));
2697 } else { 2697 } else {
2698 jmp(failure); 2698 jmp(failure);
2699 } 2699 }
2700 } 2700 }
2701 2701
2702 2702
2703 void Assembler::PushCodeObject() { 2703 void Assembler::PushCodeObject() {
(...skipping 318 matching lines...) Expand 10 before | Expand all | Expand 10 after
3022 3022
3023 const char* Assembler::FpuRegisterName(FpuRegister reg) { 3023 const char* Assembler::FpuRegisterName(FpuRegister reg) {
3024 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters)); 3024 ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters));
3025 return xmm_reg_names[reg]; 3025 return xmm_reg_names[reg];
3026 } 3026 }
3027 3027
3028 3028
3029 } // namespace dart 3029 } // namespace dart
3030 3030
3031 #endif // defined TARGET_ARCH_IA32 3031 #endif // defined TARGET_ARCH_IA32
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