Lattice-based representation inference, powered by left/right specific type feedback for BinaryOps …

src/objects.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 4247 matching lines @@
   DECL_ACCESSORS(relocation_info, ByteArray)
   void InvalidateRelocation();
 
   // [handler_table]: Fixed array containing offsets of exception handlers.
   DECL_ACCESSORS(handler_table, FixedArray)
 
   // [deoptimization_data]: Array containing data for deopt.
   DECL_ACCESSORS(deoptimization_data, FixedArray)
 
   // [type_feedback_info]: Struct containing type feedback information.
-  // Will contain either a TypeFeedbackInfo object, or undefined.
+  // STUBs can use this slot to store arbitrary information as a Smi.
+  // Will contain either a TypeFeedbackInfo object, or undefined, or a Smi.
   DECL_ACCESSORS(type_feedback_info, Object)
+  inline void InitializeTypeFeedbackInfoNoWriteBarrier(Object* value);
+  inline int stub_info();
+  inline void set_stub_info(int info);
 
   // [gc_metadata]: Field used to hold GC related metadata. The contents of this
   // field does not have to be traced during garbage collection since
   // it is only used by the garbage collector itself.
   DECL_ACCESSORS(gc_metadata, Object)
 
   // [ic_age]: Inline caching age: the value of the Heap::global_ic_age
   // at the moment when this object was created.
   inline void set_ic_age(int count);
   inline int ic_age();
@@ skipping 85 matching lines @@
 
   // [check type]: For kind CALL_IC, tells how to check if the
   // receiver is valid for the given call.
   inline CheckType check_type();
   inline void set_check_type(CheckType value);
 
   // [type-recording unary op type]: For kind UNARY_OP_IC.
   inline byte unary_op_type();
   inline void set_unary_op_type(byte value);
 
-  // [type-recording binary op type]: For kind BINARY_OP_IC.
-  inline byte binary_op_type();
-  inline void set_binary_op_type(byte value);
-  inline byte binary_op_result_type();
-  inline void set_binary_op_result_type(byte value);
-
-  // [compare state]: For kind COMPARE_IC, tells what state the stub is in.
-  inline byte compare_state();
-  inline void set_compare_state(byte value);
-
-  // [compare_operation]: For kind COMPARE_IC tells what compare operation the
-  // stub was generated for.
-  inline byte compare_operation();
-  inline void set_compare_operation(byte value);
-
   // [to_boolean_foo]: For kind TO_BOOLEAN_IC tells what state the stub is in.
   inline byte to_boolean_state();
   inline void set_to_boolean_state(byte value);
 
   // [has_function_cache]: For kind STUB tells whether there is a function
   // cache is passed to the stub.
   inline bool has_function_cache();
   inline void set_has_function_cache(bool flag);
 
   bool allowed_in_shared_map_code_cache();
@@ skipping 172 matching lines @@
   class KindField: public BitField<Kind, 7, 4> {};
   class ExtraICStateField: public BitField<ExtraICState, 11, 2> {};
   class IsPregeneratedField: public BitField<bool, 13, 1> {};
 
   // KindSpecificFlags1 layout (STUB and OPTIMIZED_FUNCTION)
   static const int kStackSlotsFirstBit = 0;
   static const int kStackSlotsBitCount = 24;
   static const int kUnaryOpTypeFirstBit =
       kStackSlotsFirstBit + kStackSlotsBitCount;
   static const int kUnaryOpTypeBitCount = 3;
-  static const int kBinaryOpTypeFirstBit =
-      kStackSlotsFirstBit + kStackSlotsBitCount;
-  static const int kBinaryOpTypeBitCount = 3;
-  static const int kBinaryOpResultTypeFirstBit =
-      kBinaryOpTypeFirstBit + kBinaryOpTypeBitCount;
-  static const int kBinaryOpResultTypeBitCount = 3;
-  static const int kCompareStateFirstBit =
-      kStackSlotsFirstBit + kStackSlotsBitCount;
-  static const int kCompareStateBitCount = 3;
-  static const int kCompareOperationFirstBit =
-      kCompareStateFirstBit + kCompareStateBitCount;
-  static const int kCompareOperationBitCount = 4;
   static const int kToBooleanStateFirstBit =
       kStackSlotsFirstBit + kStackSlotsBitCount;
   static const int kToBooleanStateBitCount = 8;
   static const int kHasFunctionCacheFirstBit =
       kStackSlotsFirstBit + kStackSlotsBitCount;
   static const int kHasFunctionCacheBitCount = 1;
 
   STATIC_ASSERT(kStackSlotsFirstBit + kStackSlotsBitCount <= 32);
   STATIC_ASSERT(kUnaryOpTypeFirstBit + kUnaryOpTypeBitCount <= 32);
-  STATIC_ASSERT(kBinaryOpTypeFirstBit + kBinaryOpTypeBitCount <= 32);
-  STATIC_ASSERT(kBinaryOpResultTypeFirstBit +
-                kBinaryOpResultTypeBitCount <= 32);
-  STATIC_ASSERT(kCompareStateFirstBit + kCompareStateBitCount <= 32);
-  STATIC_ASSERT(kCompareOperationFirstBit + kCompareOperationBitCount <= 32);
   STATIC_ASSERT(kToBooleanStateFirstBit + kToBooleanStateBitCount <= 32);
   STATIC_ASSERT(kHasFunctionCacheFirstBit + kHasFunctionCacheBitCount <= 32);
 
   class StackSlotsField: public BitField<int,
       kStackSlotsFirstBit, kStackSlotsBitCount> {};  // NOLINT
   class UnaryOpTypeField: public BitField<int,
       kUnaryOpTypeFirstBit, kUnaryOpTypeBitCount> {};  // NOLINT
-  class BinaryOpTypeField: public BitField<int,
-      kBinaryOpTypeFirstBit, kBinaryOpTypeBitCount> {};  // NOLINT
-  class BinaryOpResultTypeField: public BitField<int,
-      kBinaryOpResultTypeFirstBit, kBinaryOpResultTypeBitCount> {};  // NOLINT
-  class CompareStateField: public BitField<int,
-      kCompareStateFirstBit, kCompareStateBitCount> {};  // NOLINT
-  class CompareOperationField: public BitField<int,
-      kCompareOperationFirstBit, kCompareOperationBitCount> {};  // NOLINT
   class ToBooleanStateField: public BitField<int,
       kToBooleanStateFirstBit, kToBooleanStateBitCount> {};  // NOLINT
   class HasFunctionCacheField: public BitField<bool,
       kHasFunctionCacheFirstBit, kHasFunctionCacheBitCount> {};  // NOLINT
 
   // KindSpecificFlags2 layout (STUB and OPTIMIZED_FUNCTION)
   static const int kStubMajorKeyFirstBit = 0;
   static const int kSafepointTableOffsetFirstBit =
       kStubMajorKeyFirstBit + kStubMajorKeyBits;
   static const int kSafepointTableOffsetBitCount = 26;
@@ skipping 4325 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_