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1 // Copyright 2009 the V8 project authors. All rights reserved. | 1 // Copyright 2009 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 |
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972 // The element is memory, a register, or a constant. | 972 // The element is memory, a register, or a constant. |
973 if (element.is_memory()) { | 973 if (element.is_memory()) { |
974 // Memory elements could only be the backing store of a copy. | 974 // Memory elements could only be the backing store of a copy. |
975 // Allocate the original to a register. | 975 // Allocate the original to a register. |
976 ASSERT(index <= stack_pointer_); | 976 ASSERT(index <= stack_pointer_); |
977 Result temp = cgen_->allocator()->Allocate(); | 977 Result temp = cgen_->allocator()->Allocate(); |
978 ASSERT(temp.is_valid()); | 978 ASSERT(temp.is_valid()); |
979 Use(temp.reg(), index); | 979 Use(temp.reg(), index); |
980 FrameElement new_element = | 980 FrameElement new_element = |
981 FrameElement::RegisterElement(temp.reg(), FrameElement::SYNCED); | 981 FrameElement::RegisterElement(temp.reg(), FrameElement::SYNCED); |
| 982 // Preserve the copy flag on the element. |
| 983 if (element.is_copied()) new_element.set_copied(); |
982 elements_[index] = new_element; | 984 elements_[index] = new_element; |
983 __ mov(temp.reg(), Operand(ebp, fp_relative(index))); | 985 __ mov(temp.reg(), Operand(ebp, fp_relative(index))); |
984 return Result(temp.reg(), cgen_); | 986 return Result(temp.reg(), cgen_); |
985 } else if (element.is_register()) { | 987 } else if (element.is_register()) { |
986 return Result(element.reg(), cgen_); | 988 return Result(element.reg(), cgen_); |
987 } else { | 989 } else { |
988 ASSERT(element.is_constant()); | 990 ASSERT(element.is_constant()); |
989 return Result(element.handle(), cgen_); | 991 return Result(element.handle(), cgen_); |
990 } | 992 } |
991 } | 993 } |
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1027 ASSERT(stack_pointer_ == elements_.length() - 1); | 1029 ASSERT(stack_pointer_ == elements_.length() - 1); |
1028 elements_.Add(FrameElement::MemoryElement()); | 1030 elements_.Add(FrameElement::MemoryElement()); |
1029 stack_pointer_++; | 1031 stack_pointer_++; |
1030 __ push(immediate); | 1032 __ push(immediate); |
1031 } | 1033 } |
1032 | 1034 |
1033 | 1035 |
1034 #undef __ | 1036 #undef __ |
1035 | 1037 |
1036 } } // namespace v8::internal | 1038 } } // namespace v8::internal |
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