OLD | NEW |
1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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 1740 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
1751 Handle<FixedArrayBase> constant_elements_values( | 1751 Handle<FixedArrayBase> constant_elements_values( |
1752 FixedArrayBase::cast(constant_elements->get(1))); | 1752 FixedArrayBase::cast(constant_elements->get(1))); |
1753 | 1753 |
1754 AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE; | 1754 AllocationSiteMode allocation_site_mode = TRACK_ALLOCATION_SITE; |
1755 if (has_constant_fast_elements && !FLAG_allocation_site_pretenuring) { | 1755 if (has_constant_fast_elements && !FLAG_allocation_site_pretenuring) { |
1756 // If the only customer of allocation sites is transitioning, then | 1756 // If the only customer of allocation sites is transitioning, then |
1757 // we can turn it off if we don't have anywhere else to transition to. | 1757 // we can turn it off if we don't have anywhere else to transition to. |
1758 allocation_site_mode = DONT_TRACK_ALLOCATION_SITE; | 1758 allocation_site_mode = DONT_TRACK_ALLOCATION_SITE; |
1759 } | 1759 } |
1760 | 1760 |
1761 if (expr->depth() > 1) { | 1761 Heap* heap = isolate()->heap(); |
| 1762 if (has_constant_fast_elements && |
| 1763 constant_elements_values->map() == heap->fixed_cow_array_map()) { |
| 1764 // If the elements are already FAST_*_ELEMENTS, the boilerplate cannot |
| 1765 // change, so it's possible to specialize the stub in advance. |
| 1766 __ IncrementCounter(isolate()->counters()->cow_arrays_created_stub(), 1); |
| 1767 __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1768 __ mov(eax, FieldOperand(ebx, JSFunction::kLiteralsOffset)); |
| 1769 __ mov(ebx, Immediate(Smi::FromInt(expr->literal_index()))); |
| 1770 __ mov(ecx, Immediate(constant_elements)); |
| 1771 FastCloneShallowArrayStub stub( |
| 1772 isolate(), |
| 1773 FastCloneShallowArrayStub::COPY_ON_WRITE_ELEMENTS, |
| 1774 allocation_site_mode, |
| 1775 length); |
| 1776 __ CallStub(&stub); |
| 1777 } else if (expr->depth() > 1 || Serializer::enabled() || |
| 1778 length > FastCloneShallowArrayStub::kMaximumClonedLength) { |
1762 __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); | 1779 __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
1763 __ push(FieldOperand(ebx, JSFunction::kLiteralsOffset)); | 1780 __ push(FieldOperand(ebx, JSFunction::kLiteralsOffset)); |
1764 __ push(Immediate(Smi::FromInt(expr->literal_index()))); | 1781 __ push(Immediate(Smi::FromInt(expr->literal_index()))); |
1765 __ push(Immediate(constant_elements)); | 1782 __ push(Immediate(constant_elements)); |
1766 __ push(Immediate(Smi::FromInt(flags))); | 1783 __ push(Immediate(Smi::FromInt(flags))); |
1767 __ CallRuntime(Runtime::kHiddenCreateArrayLiteral, 4); | 1784 __ CallRuntime(Runtime::kHiddenCreateArrayLiteral, 4); |
1768 } else { | 1785 } else { |
| 1786 ASSERT(IsFastSmiOrObjectElementsKind(constant_elements_kind) || |
| 1787 FLAG_smi_only_arrays); |
| 1788 FastCloneShallowArrayStub::Mode mode = |
| 1789 FastCloneShallowArrayStub::CLONE_ANY_ELEMENTS; |
| 1790 |
| 1791 // If the elements are already FAST_*_ELEMENTS, the boilerplate cannot |
| 1792 // change, so it's possible to specialize the stub in advance. |
| 1793 if (has_constant_fast_elements) { |
| 1794 mode = FastCloneShallowArrayStub::CLONE_ELEMENTS; |
| 1795 } |
| 1796 |
1769 __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); | 1797 __ mov(ebx, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
1770 __ mov(eax, FieldOperand(ebx, JSFunction::kLiteralsOffset)); | 1798 __ mov(eax, FieldOperand(ebx, JSFunction::kLiteralsOffset)); |
1771 __ mov(ebx, Immediate(Smi::FromInt(expr->literal_index()))); | 1799 __ mov(ebx, Immediate(Smi::FromInt(expr->literal_index()))); |
1772 __ mov(ecx, Immediate(constant_elements)); | 1800 __ mov(ecx, Immediate(constant_elements)); |
1773 FastCloneShallowArrayStub stub(isolate(), allocation_site_mode); | 1801 FastCloneShallowArrayStub stub(isolate(), |
| 1802 mode, |
| 1803 allocation_site_mode, |
| 1804 length); |
1774 __ CallStub(&stub); | 1805 __ CallStub(&stub); |
1775 } | 1806 } |
1776 | 1807 |
1777 bool result_saved = false; // Is the result saved to the stack? | 1808 bool result_saved = false; // Is the result saved to the stack? |
1778 | 1809 |
1779 // Emit code to evaluate all the non-constant subexpressions and to store | 1810 // Emit code to evaluate all the non-constant subexpressions and to store |
1780 // them into the newly cloned array. | 1811 // them into the newly cloned array. |
1781 for (int i = 0; i < length; i++) { | 1812 for (int i = 0; i < length; i++) { |
1782 Expression* subexpr = subexprs->at(i); | 1813 Expression* subexpr = subexprs->at(i); |
1783 // If the subexpression is a literal or a simple materialized literal it | 1814 // If the subexpression is a literal or a simple materialized literal it |
(...skipping 3108 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
4892 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), | 4923 ASSERT_EQ(isolate->builtins()->OsrAfterStackCheck()->entry(), |
4893 Assembler::target_address_at(call_target_address, | 4924 Assembler::target_address_at(call_target_address, |
4894 unoptimized_code)); | 4925 unoptimized_code)); |
4895 return OSR_AFTER_STACK_CHECK; | 4926 return OSR_AFTER_STACK_CHECK; |
4896 } | 4927 } |
4897 | 4928 |
4898 | 4929 |
4899 } } // namespace v8::internal | 4930 } } // namespace v8::internal |
4900 | 4931 |
4901 #endif // V8_TARGET_ARCH_IA32 | 4932 #endif // V8_TARGET_ARCH_IA32 |
OLD | NEW |