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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 |
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126 } | 126 } |
127 | 127 |
128 LUnallocated(Policy policy, Lifetime lifetime) : LOperand(UNALLOCATED, 0) { | 128 LUnallocated(Policy policy, Lifetime lifetime) : LOperand(UNALLOCATED, 0) { |
129 Initialize(policy, 0, lifetime); | 129 Initialize(policy, 0, lifetime); |
130 } | 130 } |
131 | 131 |
132 // The superclass has a KindField. Some policies have a signed fixed | 132 // The superclass has a KindField. Some policies have a signed fixed |
133 // index in the upper bits. | 133 // index in the upper bits. |
134 static const int kPolicyWidth = 3; | 134 static const int kPolicyWidth = 3; |
135 static const int kLifetimeWidth = 1; | 135 static const int kLifetimeWidth = 1; |
136 static const int kVirtualRegisterWidth = 15; | 136 static const int kVirtualRegisterWidth = 18; |
137 | 137 |
138 static const int kPolicyShift = kKindFieldWidth; | 138 static const int kPolicyShift = kKindFieldWidth; |
139 static const int kLifetimeShift = kPolicyShift + kPolicyWidth; | 139 static const int kLifetimeShift = kPolicyShift + kPolicyWidth; |
140 static const int kVirtualRegisterShift = kLifetimeShift + kLifetimeWidth; | 140 static const int kVirtualRegisterShift = kLifetimeShift + kLifetimeWidth; |
141 static const int kFixedIndexShift = | 141 static const int kFixedIndexShift = |
142 kVirtualRegisterShift + kVirtualRegisterWidth; | 142 kVirtualRegisterShift + kVirtualRegisterWidth; |
143 static const int kFixedIndexWidth = 32 - kFixedIndexShift; | |
144 STATIC_ASSERT(kFixedIndexWidth > 5); | |
145 | 143 |
146 class PolicyField : public BitField<Policy, kPolicyShift, kPolicyWidth> { }; | 144 class PolicyField : public BitField<Policy, kPolicyShift, kPolicyWidth> { }; |
147 | 145 |
148 class LifetimeField | 146 class LifetimeField |
149 : public BitField<Lifetime, kLifetimeShift, kLifetimeWidth> { | 147 : public BitField<Lifetime, kLifetimeShift, kLifetimeWidth> { |
150 }; | 148 }; |
151 | 149 |
152 class VirtualRegisterField | 150 class VirtualRegisterField |
153 : public BitField<unsigned, | 151 : public BitField<unsigned, |
154 kVirtualRegisterShift, | 152 kVirtualRegisterShift, |
155 kVirtualRegisterWidth> { | 153 kVirtualRegisterWidth> { |
156 }; | 154 }; |
157 | 155 |
158 static const int kMaxVirtualRegisters = 1 << kVirtualRegisterWidth; | 156 static const int kMaxVirtualRegisters = 1 << kVirtualRegisterWidth; |
159 static const int kMaxFixedIndex = (1 << kFixedIndexWidth) - 1; | 157 static const int kMaxFixedIndex = 63; |
160 static const int kMinFixedIndex = -(1 << kFixedIndexWidth); | 158 static const int kMinFixedIndex = -64; |
161 | 159 |
162 bool HasAnyPolicy() const { | 160 bool HasAnyPolicy() const { |
163 return policy() == ANY; | 161 return policy() == ANY; |
164 } | 162 } |
165 bool HasFixedPolicy() const { | 163 bool HasFixedPolicy() const { |
166 return policy() == FIXED_REGISTER || | 164 return policy() == FIXED_REGISTER || |
167 policy() == FIXED_DOUBLE_REGISTER || | 165 policy() == FIXED_DOUBLE_REGISTER || |
168 policy() == FIXED_SLOT; | 166 policy() == FIXED_SLOT; |
169 } | 167 } |
170 bool HasRegisterPolicy() const { | 168 bool HasRegisterPolicy() const { |
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703 ZoneList<Handle<JSFunction> > inlined_closures_; | 701 ZoneList<Handle<JSFunction> > inlined_closures_; |
704 }; | 702 }; |
705 | 703 |
706 | 704 |
707 int ElementsKindToShiftSize(ElementsKind elements_kind); | 705 int ElementsKindToShiftSize(ElementsKind elements_kind); |
708 | 706 |
709 | 707 |
710 } } // namespace v8::internal | 708 } } // namespace v8::internal |
711 | 709 |
712 #endif // V8_LITHIUM_H_ | 710 #endif // V8_LITHIUM_H_ |
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