Shrink AOT snapshot size and memory usage.

runtime/vm/object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 1868 matching lines @@
     return raw_ptr()->target_name_;
   }
 
   RawArray* arguments_descriptor() const {
     return raw_ptr()->args_descriptor_;
   }
 
   intptr_t NumArgsTested() const;
 
   intptr_t deopt_id() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return -1;
+#else
     return raw_ptr()->deopt_id_;
+#endif
   }
 
   bool IsImmutable() const;
 
   void Reset(Zone* zone) const;
   void ResetSwitchable(Zone* zone) const;
 
   // Note: only deopts with reasons before Unknown in this list are recorded in
   // the ICData. All other reasons are used purely for informational messages
   // printed during deoptimization itself.
@@ skipping 400 matching lines @@
 
   // Compiles unoptimized code (if necessary) and attaches it to the function.
   void EnsureHasCompiledUnoptimizedCode() const;
 
   // Return the most recently compiled and installed code for this function.
   // It is not the only Code object that points to this function.
   RawCode* CurrentCode() const {
     return raw_ptr()->code_;
   }
 
-  RawCode* unoptimized_code() const { return raw_ptr()->unoptimized_code_; }
+  RawCode* unoptimized_code() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return static_cast<RawCode*>(Object::null());
+#else
+    return raw_ptr()->unoptimized_code_;
+#endif
+  }
   void set_unoptimized_code(const Code& value) const;
   bool HasCode() const;
 
   static intptr_t code_offset() {
     return OFFSET_OF(RawFunction, code_);
   }
 
   static intptr_t entry_point_offset() {
     return OFFSET_OF(RawFunction, entry_point_);
   }
@@ skipping 113 matching lines @@
       case RawFunction::kClosureFunction:
       case RawFunction::kConstructor:
         return false;
       default:
         UNREACHABLE();
         return false;
     }
   }
   bool IsInFactoryScope() const;
 
-  TokenPosition token_pos() const { return raw_ptr()->token_pos_; }
+  TokenPosition token_pos() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return TokenPosition();
+#else
+    return raw_ptr()->token_pos_;
+#endif
+  }
   void set_token_pos(TokenPosition value) const;
 
-  TokenPosition end_token_pos() const { return raw_ptr()->end_token_pos_; }
+  TokenPosition end_token_pos() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return TokenPosition();
+#else
+    return raw_ptr()->end_token_pos_;
+#endif
+}
   void set_end_token_pos(TokenPosition value) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     StoreNonPointer(&raw_ptr()->end_token_pos_, value);
+#endif
   }
 
   intptr_t num_fixed_parameters() const {
     return raw_ptr()->num_fixed_parameters_;
   }
   void set_num_fixed_parameters(intptr_t value) const;
 
   bool HasOptionalParameters() const {
     return raw_ptr()->num_optional_parameters_ != 0;
   }
@@ skipping 17 matching lines @@
   intptr_t NumOptionalNamedParameters() const {
     const intptr_t num_opt_params = raw_ptr()->num_optional_parameters_;
     return (num_opt_params < 0) ? -num_opt_params : 0;
   }
 
   intptr_t NumParameters() const;
 
   intptr_t NumImplicitParameters() const;
 
   static intptr_t usage_counter_offset() {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return 0;
+#else
     return OFFSET_OF(RawFunction, usage_counter_);
+#endif
   }
   intptr_t usage_counter() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return 0;
+#else
     return raw_ptr()->usage_counter_;
+#endif
   }
   void set_usage_counter(intptr_t value) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     // TODO(Srdjan): Assert that this is thread-safe, i.e., only
     // set from mutator-thread or while at a safepoint (e.g., during marking).
     StoreNonPointer(&raw_ptr()->usage_counter_, value);
+#endif
   }
 
   int8_t deoptimization_counter() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return 0;
+#else
     return raw_ptr()->deoptimization_counter_;
+#endif
   }
   void set_deoptimization_counter(int8_t value) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     ASSERT(value >= 0);
     StoreNonPointer(&raw_ptr()->deoptimization_counter_, value);
+#endif
   }
 
   static const intptr_t kMaxInstructionCount = (1 << 16) - 1;
   intptr_t optimized_instruction_count() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return 0;
+#else
     return raw_ptr()->optimized_instruction_count_;
+#endif
   }
   void set_optimized_instruction_count(intptr_t value) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     ASSERT(value >= 0);
     if (value > kMaxInstructionCount) {
       value = kMaxInstructionCount;
     }
     StoreNonPointer(&raw_ptr()->optimized_instruction_count_,
                     static_cast<uint16_t>(value));
+#endif
   }
 
   intptr_t optimized_call_site_count() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return 0;
+#else
     return raw_ptr()->optimized_call_site_count_;
+#endif
   }
   void set_optimized_call_site_count(intptr_t value) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     ASSERT(value >= 0);
     if (value > kMaxInstructionCount) {
       value = kMaxInstructionCount;
     }
     StoreNonPointer(&raw_ptr()->optimized_call_site_count_,
                     static_cast<uint16_t>(value));
+#endif
   }
 
   bool IsOptimizable() const;
   bool IsNativeAutoSetupScope() const;
   void SetIsOptimizable(bool value) const;
   void SetIsNativeAutoSetupScope(bool value) const;
 
   bool CanBeInlined() const;
 
   MethodRecognizer::Kind recognized_kind() const {
@@ skipping 239 matching lines @@
 
   // Sets deopt reason in all ICData-s with given deopt_id.
   void SetDeoptReasonForAll(intptr_t deopt_id, ICData::DeoptReasonId reason);
 
   void set_modifier(RawFunction::AsyncModifier value) const;
 
   // 'was_compiled' is true if the function was compiled once in this
   // VM instantiation. It is independent from presence of type feedback
   // (ic_data_array) and code, which may be loaded from a snapshot.
   void set_was_compiled(bool value) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     StoreNonPointer(&raw_ptr()->was_compiled_, value ? 1 : 0);
+#endif
   }
-  bool was_compiled() const { return raw_ptr()->was_compiled_ == 1; }
+  bool was_compiled() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return true;
+#else
+    return raw_ptr()->was_compiled_ == 1;
+#endif
+  }
 
   // static: Considered during class-side or top-level resolution rather than
   //         instance-side resolution.
   // const: Valid target of a const constructor call.
   // abstract: Skipped during instance-side resolution.
   // reflectable: Enumerated by mirrors, invocable by mirrors. False for private
   //              functions of dart: libraries.
   // debuggable: Valid location of a breakpoint. Synthetic code is not
   //             debuggable.
   // visible: Frame is included in stack traces. Synthetic code such as
@@ skipping 1696 matching lines @@
   static void UnpackInto(const Array& table,
                          const TypedData& packed,
                          GrowableArray<DeoptInstr*>* instructions,
                          intptr_t length);
 };
 
 
 class Code : public Object {
  public:
   RawInstructions* active_instructions() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return NULL;
+#else
     return raw_ptr()->active_instructions_;
+#endif
   }
 
   RawInstructions* instructions() const { return raw_ptr()->instructions_; }
 
   static intptr_t saved_instructions_offset() {
     return OFFSET_OF(RawCode, instructions_);
   }
 
   static intptr_t entry_point_offset() {
     return OFFSET_OF(RawCode, entry_point_);
@@ skipping 47 matching lines @@
 
   RawPcDescriptors* pc_descriptors() const {
     return raw_ptr()->pc_descriptors_;
   }
   void set_pc_descriptors(const PcDescriptors& descriptors) const {
     ASSERT(descriptors.IsOld());
     StorePointer(&raw_ptr()->pc_descriptors_, descriptors.raw());
   }
 
   RawCodeSourceMap* code_source_map() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return CodeSourceMap::null();
+#else
     return raw_ptr()->code_source_map_;
+#endif
   }
 
   void set_code_source_map(const CodeSourceMap& code_source_map) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     ASSERT(code_source_map.IsOld());
     StorePointer(&raw_ptr()->code_source_map_, code_source_map.raw());
+#endif
   }
 
   // Used during reloading (see object_reload.cc). Calls Reset on all ICDatas
   // that are embedded inside the Code object.
   void ResetICDatas(Zone* zone) const;
 
   TokenPosition GetTokenPositionAt(intptr_t offset) const;
 
   // Array of DeoptInfo objects.
   RawArray* deopt_info_array() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return NULL;
+#else
     return raw_ptr()->deopt_info_array_;
+#endif
   }
   void set_deopt_info_array(const Array& array) const;
 
   RawArray* stackmaps() const {
     return raw_ptr()->stackmaps_;
   }
   void set_stackmaps(const Array& maps) const;
   RawStackmap* GetStackmap(
       uint32_t pc_offset, Array* stackmaps, Stackmap* map) const;
 
   enum {
     kSCallTableOffsetEntry = 0,
     kSCallTableFunctionEntry = 1,
     kSCallTableCodeEntry = 2,
     kSCallTableEntryLength = 3,
   };
 
   void set_static_calls_target_table(const Array& value) const;
   RawArray* static_calls_target_table() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return NULL;
+#else
     return raw_ptr()->static_calls_target_table_;
+#endif
   }
 
   RawTypedData* GetDeoptInfoAtPc(uword pc,
                                  ICData::DeoptReasonId* deopt_reason,
                                  uint32_t* deopt_flags) const;
 
   // Returns null if there is no static call at 'pc'.
   RawFunction* GetStaticCallTargetFunctionAt(uword pc) const;
   // Returns null if there is no static call at 'pc'.
   RawCode* GetStaticCallTargetCodeAt(uword pc) const;
@@ skipping 30 matching lines @@
     friend class Code;
 
     DISALLOW_COPY_AND_ASSIGN(Comments);
   };
 
 
   const Comments& comments() const;
   void set_comments(const Comments& comments) const;
 
   RawObject* return_address_metadata() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return NULL;
+#else
     return raw_ptr()->return_address_metadata_;
+#endif
   }
   // Sets |return_address_metadata|.
   void SetPrologueOffset(intptr_t offset) const;
   // Returns -1 if no prologue offset is available.
   intptr_t GetPrologueOffset() const;
 
   enum InlinedIntervalEntries {
     kInlIntStart = 0,
     kInlIntInliningId = 1,
     kInlIntNumEntries = 2,
@@ skipping 14 matching lines @@
   // If |token_positions| is not NULL it will be populated with the token
   // positions of the inlined calls.
   void GetInlinedFunctionsAt(
       intptr_t offset,
       GrowableArray<Function*>* fs,
       GrowableArray<TokenPosition>* token_positions = NULL) const;
 
   void DumpInlinedIntervals() const;
 
   RawLocalVarDescriptors* var_descriptors() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+    return NULL;
+#else
     return raw_ptr()->var_descriptors_;
+#endif
   }
   void set_var_descriptors(const LocalVarDescriptors& value) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     ASSERT(value.IsOld());
     StorePointer(&raw_ptr()->var_descriptors_, value.raw());
+#endif
   }
 
   // Will compute local var descriptors is necessary.
   RawLocalVarDescriptors* GetLocalVarDescriptors() const;
 
   RawExceptionHandlers* exception_handlers() const {
     return raw_ptr()->exception_handlers_;
   }
   void set_exception_handlers(const ExceptionHandlers& handlers) const {
     ASSERT(handlers.IsOld());
@@ skipping 60 matching lines @@
   uword GetLazyDeoptPc() const;
 
   // Find pc, return 0 if not found.
   uword GetPcForDeoptId(intptr_t deopt_id, RawPcDescriptors::Kind kind) const;
   intptr_t GetDeoptIdForOsr(uword pc) const;
 
   RawString* Name() const;
   RawString* QualifiedName() const;
 
   int64_t compile_timestamp() const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    return 0;
+#else
     return raw_ptr()->compile_timestamp_;
+#endif
   }
 
   intptr_t lazy_deopt_pc_offset() const {
+#if defined(DART_PRECOMPILED_RUNTIME)

[Florian Schneider, 2016/09/15 17:17:37]

Is this used in AOT? UNREACHABLE as well?

[rmacnak, 2016/09/16 21:59:02]

From the profiler.

+    return 0;
+#else
     return raw_ptr()->lazy_deopt_pc_offset_;
+#endif
   }
   void set_lazy_deopt_pc_offset(intptr_t pc) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     StoreNonPointer(&raw_ptr()->lazy_deopt_pc_offset_, pc);
+#endif
   }
 
   bool IsAllocationStubCode() const;
   bool IsStubCode() const;
   bool IsFunctionCode() const;
 
   void DisableDartCode() const;
 
   void DisableStubCode() const;
 
@@ skipping 43 matching lines @@
     DISALLOW_COPY_AND_ASSIGN(SlowFindRawCodeVisitor);
   };
 
   static bool IsOptimized(RawCode* code) {
     return Code::OptimizedBit::decode(code->ptr()->state_bits_);
   }
 
   static const intptr_t kEntrySize = sizeof(int32_t);  // NOLINT
 
   void set_compile_timestamp(int64_t timestamp) const {
+#if defined(DART_PRECOMPILED_RUNTIME)
+    UNREACHABLE();
+#else
     StoreNonPointer(&raw_ptr()->compile_timestamp_, timestamp);
+#endif
   }
 
   void SetActiveInstructions(RawInstructions* instructions) const;
 
   void set_instructions(RawInstructions* instructions) const {
     ASSERT(Thread::Current()->IsMutatorThread() || !is_alive());
     StorePointer(&raw_ptr()->instructions_, instructions);
   }
 
   void set_pointer_offsets_length(intptr_t value) {
@@ skipping 209 matching lines @@
 
   void Insert(const Smi& class_id, const Function& target) const;
 
   static intptr_t InstanceSize() {
     return RoundedAllocationSize(sizeof(RawMegamorphicCache));
   }
 
  private:
   friend class Class;
   friend class MegamorphicCacheTable;
+  friend class Precompiler;
 
   static RawMegamorphicCache* New();
 
   void set_target_name(const String& value) const;
   void set_arguments_descriptor(const Array& value) const;
 
   enum {
     kClassIdIndex,
     kTargetFunctionIndex,
     kEntryLength,
@@ skipping 3725 matching lines @@
 
 inline void TypeArguments::SetHash(intptr_t value) const {
   // This is only safe because we create a new Smi, which does not cause
   // heap allocation.
   StoreSmi(&raw_ptr()->hash_, Smi::New(value));
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_