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Issue 159013003: Remove extended_extra_ic_state and extend extra_ic_state instead. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 10 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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5229 inline void set_flags(Flags flags); 5229 inline void set_flags(Flags flags);
5230 5230
5231 // [flags]: Access to specific code flags. 5231 // [flags]: Access to specific code flags.
5232 inline Kind kind(); 5232 inline Kind kind();
5233 inline Kind handler_kind() { 5233 inline Kind handler_kind() {
5234 return static_cast<Kind>(arguments_count()); 5234 return static_cast<Kind>(arguments_count());
5235 } 5235 }
5236 inline InlineCacheState ic_state(); // Only valid for IC stubs. 5236 inline InlineCacheState ic_state(); // Only valid for IC stubs.
5237 inline ExtraICState extra_ic_state(); // Only valid for IC stubs. 5237 inline ExtraICState extra_ic_state(); // Only valid for IC stubs.
5238 5238
5239 inline ExtraICState extended_extra_ic_state(); // Only valid for
5240 // non-call IC stubs.
5241 static bool needs_extended_extra_ic_state(Kind kind) {
5242 // TODO(danno): This is a bit of a hack right now since there are still
5243 // clients of this API that pass "extra" values in for argc. These clients
5244 // should be retrofitted to used ExtendedExtraICState.
5245 return kind == COMPARE_NIL_IC || kind == TO_BOOLEAN_IC ||
5246 kind == BINARY_OP_IC;
5247 }
5248
5249 inline StubType type(); // Only valid for monomorphic IC stubs. 5239 inline StubType type(); // Only valid for monomorphic IC stubs.
5250 inline int arguments_count(); // Only valid for call IC stubs. 5240 inline int arguments_count(); // Only valid for call IC stubs.
5251 5241
5252 // Testers for IC stub kinds. 5242 // Testers for IC stub kinds.
5253 inline bool is_inline_cache_stub(); 5243 inline bool is_inline_cache_stub();
5254 inline bool is_debug_stub(); 5244 inline bool is_debug_stub();
5255 inline bool is_handler() { return kind() == HANDLER; } 5245 inline bool is_handler() { return kind() == HANDLER; }
5256 inline bool is_load_stub() { return kind() == LOAD_IC; } 5246 inline bool is_load_stub() { return kind() == LOAD_IC; }
5257 inline bool is_keyed_load_stub() { return kind() == KEYED_LOAD_IC; } 5247 inline bool is_keyed_load_stub() { return kind() == KEYED_LOAD_IC; }
5258 inline bool is_store_stub() { return kind() == STORE_IC; } 5248 inline bool is_store_stub() { return kind() == STORE_IC; }
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5379 // which would make snapshot production non-reproducible. This method wipes 5369 // which would make snapshot production non-reproducible. This method wipes
5380 // out the to-be-overwritten header data for reproducible snapshots. 5370 // out the to-be-overwritten header data for reproducible snapshots.
5381 inline void WipeOutHeader(); 5371 inline void WipeOutHeader();
5382 5372
5383 // Flags operations. 5373 // Flags operations.
5384 static inline Flags ComputeFlags( 5374 static inline Flags ComputeFlags(
5385 Kind kind, 5375 Kind kind,
5386 InlineCacheState ic_state = UNINITIALIZED, 5376 InlineCacheState ic_state = UNINITIALIZED,
5387 ExtraICState extra_ic_state = kNoExtraICState, 5377 ExtraICState extra_ic_state = kNoExtraICState,
5388 StubType type = NORMAL, 5378 StubType type = NORMAL,
5389 int argc = -1, 5379 Kind handler_kind = STUB,
5390 InlineCacheHolderFlag holder = OWN_MAP); 5380 InlineCacheHolderFlag holder = OWN_MAP);
5391 5381
5392 static inline Flags ComputeMonomorphicFlags( 5382 static inline Flags ComputeMonomorphicFlags(
5393 Kind kind, 5383 Kind kind,
5394 ExtraICState extra_ic_state = kNoExtraICState, 5384 ExtraICState extra_ic_state = kNoExtraICState,
5395 InlineCacheHolderFlag holder = OWN_MAP, 5385 InlineCacheHolderFlag holder = OWN_MAP,
5396 StubType type = NORMAL, 5386 StubType type = NORMAL,
5397 int argc = -1); 5387 Kind handler_kind = STUB);
5398 5388
5399 static inline InlineCacheState ExtractICStateFromFlags(Flags flags); 5389 static inline InlineCacheState ExtractICStateFromFlags(Flags flags);
5400 static inline StubType ExtractTypeFromFlags(Flags flags); 5390 static inline StubType ExtractTypeFromFlags(Flags flags);
5401 static inline Kind ExtractKindFromFlags(Flags flags); 5391 static inline Kind ExtractKindFromFlags(Flags flags);
5402 static inline InlineCacheHolderFlag ExtractCacheHolderFromFlags(Flags flags); 5392 static inline InlineCacheHolderFlag ExtractCacheHolderFromFlags(Flags flags);
5403 static inline ExtraICState ExtractExtraICStateFromFlags(Flags flags); 5393 static inline ExtraICState ExtractExtraICStateFromFlags(Flags flags);
5404 static inline ExtraICState ExtractExtendedExtraICStateFromFlags(Flags flags);
5405 static inline int ExtractArgumentsCountFromFlags(Flags flags); 5394 static inline int ExtractArgumentsCountFromFlags(Flags flags);
5406 5395
5407 static inline Flags RemoveTypeFromFlags(Flags flags); 5396 static inline Flags RemoveTypeFromFlags(Flags flags);
5408 5397
5409 // Convert a target address into a code object. 5398 // Convert a target address into a code object.
5410 static inline Code* GetCodeFromTargetAddress(Address address); 5399 static inline Code* GetCodeFromTargetAddress(Address address);
5411 5400
5412 // Convert an entry address into an object. 5401 // Convert an entry address into an object.
5413 static inline Object* GetObjectFromEntryAddress(Address location_of_address); 5402 static inline Object* GetObjectFromEntryAddress(Address location_of_address);
5414 5403
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5560 5549
5561 static const int kAllowOSRAtLoopNestingLevelOffset = kFullCodeFlags + 1; 5550 static const int kAllowOSRAtLoopNestingLevelOffset = kFullCodeFlags + 1;
5562 static const int kProfilerTicksOffset = kAllowOSRAtLoopNestingLevelOffset + 1; 5551 static const int kProfilerTicksOffset = kAllowOSRAtLoopNestingLevelOffset + 1;
5563 5552
5564 // Flags layout. BitField<type, shift, size>. 5553 // Flags layout. BitField<type, shift, size>.
5565 class ICStateField: public BitField<InlineCacheState, 0, 3> {}; 5554 class ICStateField: public BitField<InlineCacheState, 0, 3> {};
5566 class TypeField: public BitField<StubType, 3, 1> {}; 5555 class TypeField: public BitField<StubType, 3, 1> {};
5567 class CacheHolderField: public BitField<InlineCacheHolderFlag, 5, 1> {}; 5556 class CacheHolderField: public BitField<InlineCacheHolderFlag, 5, 1> {};
5568 class KindField: public BitField<Kind, 6, 4> {}; 5557 class KindField: public BitField<Kind, 6, 4> {};
5569 // TODO(bmeurer): Bit 10 is available for free use. :-) 5558 // TODO(bmeurer): Bit 10 is available for free use. :-)
5570 class ExtraICStateField: public BitField<ExtraICState, 11, 6> {}; 5559 class ExtraICStateField: public BitField<ExtraICState, 11,
5571 class ExtendedExtraICStateField: public BitField<ExtraICState, 11,
5572 PlatformSmiTagging::kSmiValueSize - 11 + 1> {}; // NOLINT 5560 PlatformSmiTagging::kSmiValueSize - 11 + 1> {}; // NOLINT
5573 STATIC_ASSERT(ExtraICStateField::kShift == ExtendedExtraICStateField::kShift);
5574 5561
5575 // KindSpecificFlags1 layout (STUB and OPTIMIZED_FUNCTION) 5562 // KindSpecificFlags1 layout (STUB and OPTIMIZED_FUNCTION)
5576 static const int kStackSlotsFirstBit = 0; 5563 static const int kStackSlotsFirstBit = 0;
5577 static const int kStackSlotsBitCount = 24; 5564 static const int kStackSlotsBitCount = 24;
5578 static const int kHasFunctionCacheFirstBit = 5565 static const int kHasFunctionCacheFirstBit =
5579 kStackSlotsFirstBit + kStackSlotsBitCount; 5566 kStackSlotsFirstBit + kStackSlotsBitCount;
5580 static const int kHasFunctionCacheBitCount = 1; 5567 static const int kHasFunctionCacheBitCount = 1;
5581 static const int kMarkedForDeoptimizationFirstBit = 5568 static const int kMarkedForDeoptimizationFirstBit =
5582 kStackSlotsFirstBit + kStackSlotsBitCount + 1; 5569 kStackSlotsFirstBit + kStackSlotsBitCount + 1;
5583 static const int kMarkedForDeoptimizationBitCount = 1; 5570 static const int kMarkedForDeoptimizationBitCount = 1;
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5624 class BackEdgesPatchedForOSRField: public BitField<bool, 5611 class BackEdgesPatchedForOSRField: public BitField<bool,
5625 kIsCrankshaftedBit + 1 + 29, 1> {}; // NOLINT 5612 kIsCrankshaftedBit + 1 + 29, 1> {}; // NOLINT
5626 5613
5627 // Signed field cannot be encoded using the BitField class. 5614 // Signed field cannot be encoded using the BitField class.
5628 static const int kArgumentsCountShift = 17; 5615 static const int kArgumentsCountShift = 17;
5629 static const int kArgumentsCountMask = ~((1 << kArgumentsCountShift) - 1); 5616 static const int kArgumentsCountMask = ~((1 << kArgumentsCountShift) - 1);
5630 static const int kArgumentsBits = 5617 static const int kArgumentsBits =
5631 PlatformSmiTagging::kSmiValueSize - Code::kArgumentsCountShift + 1; 5618 PlatformSmiTagging::kSmiValueSize - Code::kArgumentsCountShift + 1;
5632 static const int kMaxArguments = (1 << kArgumentsBits) - 1; 5619 static const int kMaxArguments = (1 << kArgumentsBits) - 1;
5633 5620
5634 // ICs can use either argument count or ExtendedExtraIC, since their storage
5635 // overlaps.
5636 STATIC_ASSERT(ExtraICStateField::kShift +
5637 ExtraICStateField::kSize + kArgumentsBits ==
5638 ExtendedExtraICStateField::kShift +
5639 ExtendedExtraICStateField::kSize);
5640
5641 // This constant should be encodable in an ARM instruction. 5621 // This constant should be encodable in an ARM instruction.
5642 static const int kFlagsNotUsedInLookup = 5622 static const int kFlagsNotUsedInLookup =
5643 TypeField::kMask | CacheHolderField::kMask; 5623 TypeField::kMask | CacheHolderField::kMask;
5644 5624
5645 private: 5625 private:
5646 friend class RelocIterator; 5626 friend class RelocIterator;
5647 5627
5648 void ClearInlineCaches(Kind* kind); 5628 void ClearInlineCaches(Kind* kind);
5649 5629
5650 // Code aging 5630 // Code aging
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10761 } else { 10741 } else {
10762 value &= ~(1 << bit_position); 10742 value &= ~(1 << bit_position);
10763 } 10743 }
10764 return value; 10744 return value;
10765 } 10745 }
10766 }; 10746 };
10767 10747
10768 } } // namespace v8::internal 10748 } } // namespace v8::internal
10769 10749
10770 #endif // V8_OBJECTS_H_ 10750 #endif // V8_OBJECTS_H_
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