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Side by Side Diff: src/lithium.h

Issue 11028027: Revert trunk to bleeding_edge at r12484 (Closed) Base URL: https://v8.googlecode.com/svn/trunk
Patch Set: Created 8 years, 2 months ago
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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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455 453
456 class LEnvironment: public ZoneObject { 454 class LEnvironment: public ZoneObject {
457 public: 455 public:
458 LEnvironment(Handle<JSFunction> closure, 456 LEnvironment(Handle<JSFunction> closure,
459 FrameType frame_type, 457 FrameType frame_type,
460 BailoutId ast_id, 458 BailoutId ast_id,
461 int parameter_count, 459 int parameter_count,
462 int argument_count, 460 int argument_count,
463 int value_count, 461 int value_count,
464 LEnvironment* outer, 462 LEnvironment* outer,
465 HEnterInlined* entry,
466 Zone* zone) 463 Zone* zone)
467 : closure_(closure), 464 : closure_(closure),
468 frame_type_(frame_type), 465 frame_type_(frame_type),
469 arguments_stack_height_(argument_count), 466 arguments_stack_height_(argument_count),
470 deoptimization_index_(Safepoint::kNoDeoptimizationIndex), 467 deoptimization_index_(Safepoint::kNoDeoptimizationIndex),
471 translation_index_(-1), 468 translation_index_(-1),
472 ast_id_(ast_id), 469 ast_id_(ast_id),
473 parameter_count_(parameter_count), 470 parameter_count_(parameter_count),
474 pc_offset_(-1), 471 pc_offset_(-1),
475 values_(value_count, zone), 472 values_(value_count, zone),
476 is_tagged_(value_count, zone), 473 is_tagged_(value_count, zone),
477 is_uint32_(value_count, zone), 474 is_uint32_(value_count, zone),
478 spilled_registers_(NULL), 475 spilled_registers_(NULL),
479 spilled_double_registers_(NULL), 476 spilled_double_registers_(NULL),
480 outer_(outer), 477 outer_(outer),
481 entry_(entry),
482 zone_(zone) { } 478 zone_(zone) { }
483 479
484 Handle<JSFunction> closure() const { return closure_; } 480 Handle<JSFunction> closure() const { return closure_; }
485 FrameType frame_type() const { return frame_type_; } 481 FrameType frame_type() const { return frame_type_; }
486 int arguments_stack_height() const { return arguments_stack_height_; } 482 int arguments_stack_height() const { return arguments_stack_height_; }
487 int deoptimization_index() const { return deoptimization_index_; } 483 int deoptimization_index() const { return deoptimization_index_; }
488 int translation_index() const { return translation_index_; } 484 int translation_index() const { return translation_index_; }
489 BailoutId ast_id() const { return ast_id_; } 485 BailoutId ast_id() const { return ast_id_; }
490 int parameter_count() const { return parameter_count_; } 486 int parameter_count() const { return parameter_count_; }
491 int pc_offset() const { return pc_offset_; } 487 int pc_offset() const { return pc_offset_; }
492 LOperand** spilled_registers() const { return spilled_registers_; } 488 LOperand** spilled_registers() const { return spilled_registers_; }
493 LOperand** spilled_double_registers() const { 489 LOperand** spilled_double_registers() const {
494 return spilled_double_registers_; 490 return spilled_double_registers_;
495 } 491 }
496 const ZoneList<LOperand*>* values() const { return &values_; } 492 const ZoneList<LOperand*>* values() const { return &values_; }
497 LEnvironment* outer() const { return outer_; } 493 LEnvironment* outer() const { return outer_; }
498 HEnterInlined* entry() { return entry_; }
499 494
500 void AddValue(LOperand* operand, 495 void AddValue(LOperand* operand,
501 Representation representation, 496 Representation representation,
502 bool is_uint32) { 497 bool is_uint32) {
503 values_.Add(operand, zone()); 498 values_.Add(operand, zone());
504 if (representation.IsTagged()) { 499 if (representation.IsTagged()) {
505 ASSERT(!is_uint32); 500 ASSERT(!is_uint32);
506 is_tagged_.Add(values_.length() - 1); 501 is_tagged_.Add(values_.length() - 1);
507 } 502 }
508 503
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554 BitVector is_tagged_; 549 BitVector is_tagged_;
555 BitVector is_uint32_; 550 BitVector is_uint32_;
556 551
557 // Allocation index indexed arrays of spill slot operands for registers 552 // Allocation index indexed arrays of spill slot operands for registers
558 // that are also in spill slots at an OSR entry. NULL for environments 553 // that are also in spill slots at an OSR entry. NULL for environments
559 // that do not correspond to an OSR entry. 554 // that do not correspond to an OSR entry.
560 LOperand** spilled_registers_; 555 LOperand** spilled_registers_;
561 LOperand** spilled_double_registers_; 556 LOperand** spilled_double_registers_;
562 557
563 LEnvironment* outer_; 558 LEnvironment* outer_;
564 HEnterInlined* entry_;
565 559
566 Zone* zone_; 560 Zone* zone_;
567 }; 561 };
568 562
569 563
570 // Iterates over the non-null, non-constant operands in an environment. 564 // Iterates over the non-null, non-constant operands in an environment.
571 class ShallowIterator BASE_EMBEDDED { 565 class ShallowIterator BASE_EMBEDDED {
572 public: 566 public:
573 explicit ShallowIterator(LEnvironment* env) 567 explicit ShallowIterator(LEnvironment* env)
574 : env_(env), 568 : env_(env),
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703 ZoneList<Handle<JSFunction> > inlined_closures_; 697 ZoneList<Handle<JSFunction> > inlined_closures_;
704 }; 698 };
705 699
706 700
707 int ElementsKindToShiftSize(ElementsKind elements_kind); 701 int ElementsKindToShiftSize(ElementsKind elements_kind);
708 702
709 703
710 } } // namespace v8::internal 704 } } // namespace v8::internal
711 705
712 #endif // V8_LITHIUM_H_ 706 #endif // V8_LITHIUM_H_
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