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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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67 ASSERT(element_count() == other->element_count()); | 67 ASSERT(element_count() == other->element_count()); |
68 if (top_of_stack_state_ != other->top_of_stack_state_) return false; | 68 if (top_of_stack_state_ != other->top_of_stack_state_) return false; |
69 if (register_allocation_map_ != other->register_allocation_map_) return false; | 69 if (register_allocation_map_ != other->register_allocation_map_) return false; |
70 if (tos_known_smi_map_ != other->tos_known_smi_map_) return false; | 70 if (tos_known_smi_map_ != other->tos_known_smi_map_) return false; |
71 | 71 |
72 return true; | 72 return true; |
73 } | 73 } |
74 | 74 |
75 | 75 |
76 void VirtualFrame::PrepareForReturn() { | 76 void VirtualFrame::PrepareForReturn() { |
77 SpillAll(); | 77 // Don't bother flushing tos registers as returning does not require more |
| 78 // access to the expression stack. |
| 79 top_of_stack_state_ = NO_TOS_REGISTERS; |
78 } | 80 } |
79 | 81 |
80 | 82 |
81 VirtualFrame::RegisterAllocationScope::RegisterAllocationScope( | 83 VirtualFrame::RegisterAllocationScope::RegisterAllocationScope( |
82 CodeGenerator* cgen) | 84 CodeGenerator* cgen) |
83 : cgen_(cgen), | 85 : cgen_(cgen), |
84 old_is_spilled_(SpilledScope::is_spilled_) { | 86 old_is_spilled_(SpilledScope::is_spilled_) { |
85 SpilledScope::is_spilled_ = false; | 87 SpilledScope::is_spilled_ = false; |
86 if (old_is_spilled_) { | 88 if (old_is_spilled_) { |
87 VirtualFrame* frame = cgen->frame(); | 89 VirtualFrame* frame = cgen->frame(); |
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159 | 161 |
160 MemOperand VirtualFrame::LocalAt(int index) { | 162 MemOperand VirtualFrame::LocalAt(int index) { |
161 ASSERT(0 <= index); | 163 ASSERT(0 <= index); |
162 ASSERT(index < local_count()); | 164 ASSERT(index < local_count()); |
163 return MemOperand(fp, kLocal0Offset - index * kPointerSize); | 165 return MemOperand(fp, kLocal0Offset - index * kPointerSize); |
164 } | 166 } |
165 | 167 |
166 } } // namespace v8::internal | 168 } } // namespace v8::internal |
167 | 169 |
168 #endif // V8_VIRTUAL_FRAME_LIGHT_INL_H_ | 170 #endif // V8_VIRTUAL_FRAME_LIGHT_INL_H_ |
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