Merge experimental/gc branch to the bleeding_edge.

src/code-stubs.h

 // Copyright 2011 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 27 matching lines @@
 #define CODE_STUB_LIST_ALL_PLATFORMS(V)  \
   V(CallFunction)                        \
   V(UnaryOp)                             \
   V(BinaryOp)                            \
   V(StringAdd)                           \
   V(SubString)                           \
   V(StringCompare)                       \
   V(Compare)                             \
   V(CompareIC)                           \
   V(MathPow)                             \
+  V(RecordWrite)                         \
+  V(StoreBufferOverflow)                 \
+  V(RegExpExec)                          \
   V(TranscendentalCache)                 \
   V(Instanceof)                          \
   /* All stubs above this line only exist in a few versions, which are  */  \
   /* generated ahead of time.  Therefore compiling a call to one of     */  \
   /* them can't cause a new stub to be compiled, so compiling a call to */  \
   /* them is GC safe.  The ones below this line exist in many variants  */  \
   /* so code compiling a call to one can cause a GC.  This means they   */  \
   /* can't be called from other stubs, since stub generation code is    */  \
   /* not GC safe.                                                       */  \
   V(ConvertToDouble)                     \
   V(WriteInt32ToHeapNumber)              \
   V(StackCheck)                          \
   V(FastNewClosure)                      \
   V(FastNewContext)                      \
   V(FastCloneShallowArray)               \
   V(RevertToNumber)                      \
   V(ToBoolean)                           \
   V(ToNumber)                            \
   V(CounterOp)                           \
   V(ArgumentsAccess)                     \
-  V(RegExpExec)                          \
   V(RegExpConstructResult)               \
   V(NumberToString)                      \
   V(CEntry)                              \
   V(JSEntry)                             \
   V(KeyedLoadElement)                    \
   V(KeyedStoreElement)                   \
   V(DebuggerStatement)                   \
   V(StringDictionaryLookup)
 
 // List of code stubs only used on ARM platforms.
@@ skipping 94 matching lines @@
   // Generates the assembler code for the stub.
   virtual void Generate(MacroAssembler* masm) = 0;
 
   // Perform bookkeeping required after code generation when stub code is
   // initially generated.
   void RecordCodeGeneration(Code* code, MacroAssembler* masm);
 
   // Finish the code object after it has been generated.
   virtual void FinishCode(Code* code) { }
 
+  // Returns true if TryGetCode should fail if it failed
+  // to register newly generated stub in the stub cache.
+  virtual bool MustBeInStubCache() { return false; }
+
+  // Activate newly generated stub. Is called after
+  // registering stub in the stub cache.
+  virtual void Activate(Code* code) { }
+
   // Returns information for computing the number key.
   virtual Major MajorKey() = 0;
   virtual int MinorKey() = 0;
 
   // BinaryOpStub needs to override this.
   virtual int GetCodeKind();
 
   // BinaryOpStub needs to override this.
   virtual InlineCacheState GetICState() {
     return UNINITIALIZED;
@@ skipping 344 matching lines @@
                          Register scratch);
 
   // Unfortunately you have to run without snapshots to see most of these
   // names in the profile since most compare stubs end up in the snapshot.
   virtual void PrintName(StringStream* stream);
 };
 
 
 class CEntryStub : public CodeStub {
  public:
-  explicit CEntryStub(int result_size)
-      : result_size_(result_size), save_doubles_(false) { }
+  explicit CEntryStub(int result_size,
+                      SaveFPRegsMode save_doubles = kDontSaveFPRegs)
+      : result_size_(result_size), save_doubles_(save_doubles) { }
 
   void Generate(MacroAssembler* masm);
-  void SaveDoubles() { save_doubles_ = true; }
 
   // The version of this stub that doesn't save doubles is generated ahead of
   // time, so it's OK to call it from other stubs that can't cope with GC during
   // their code generation.  On machines that always have gp registers (x64) we
   // can generate both variants ahead of time.
   virtual bool CompilingCallsToThisStubIsGCSafe();
 
  private:
   void GenerateCore(MacroAssembler* masm,
                     Label* throw_normal_exception,
                     Label* throw_termination_exception,
                     Label* throw_out_of_memory_exception,
                     bool do_gc,
                     bool always_allocate_scope);
   void GenerateThrowTOS(MacroAssembler* masm);
   void GenerateThrowUncatchable(MacroAssembler* masm,
                                 UncatchableExceptionType type);
 
   // Number of pointers/values returned.
   const int result_size_;
-  bool save_doubles_;
+  SaveFPRegsMode save_doubles_;
 
   Major MajorKey() { return CEntry; }
   int MinorKey();
 
   bool NeedsImmovableCode();
 };
 
 
 class JSEntryStub : public CodeStub {
  public:
@@ skipping 386 matching lines @@
                     bool result);
   void GenerateTypeTransition(MacroAssembler* masm);
 
   Register tos_;
   Types types_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_