Reduce code duplication in IC updating.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/25033003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17034 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/ic.cc

@@ -996,7 +996,7 @@ bool IC::UpdatePolymorphicIC(State state,
                              Handle<String> name,
                              Handle<Code> code,
                              StrictModeFlag strict_mode) {
-  if (code->kind() != Code::HANDLER) return false;
+  if (!code->is_handler()) return false;
 
   MapHandleList receiver_maps;
   CodeHandleList handlers;
@@ -1045,72 +1045,19 @@ bool IC::UpdatePolymorphicIC(State state,
     handlers.Add(code);
   }
 
-  Handle<Code> ic = ComputePolymorphicIC(
+  Handle<Code> ic = isolate()->stub_cache()->ComputePolymorphicIC(
       &receiver_maps, &handlers, number_of_valid_maps, name, strict_mode);
   set_target(*ic);
   return true;
 }
 
 
-Handle<Code> LoadIC::ComputePolymorphicIC(MapHandleList* receiver_maps,
-                                          CodeHandleList* handlers,
-                                          int number_of_valid_maps,
-                                          Handle<Name> name,
-                                          StrictModeFlag strict_mode) {
-  return isolate()->stub_cache()->ComputePolymorphicLoadIC(
-      receiver_maps, handlers, number_of_valid_maps, name);
-}
-
-
-Handle<Code> StoreIC::ComputePolymorphicIC(MapHandleList* receiver_maps,
-                                           CodeHandleList* handlers,
-                                           int number_of_valid_maps,
-                                           Handle<Name> name,
-                                           StrictModeFlag strict_mode) {
-  return isolate()->stub_cache()->ComputePolymorphicStoreIC(
-      receiver_maps, handlers, number_of_valid_maps, name, strict_mode);
-}
-
-
-void LoadIC::UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                 Handle<Code> handler,
-                                 Handle<String> name,
-                                 StrictModeFlag strict_mode) {
-  if (handler->is_load_stub()) return set_target(*handler);
-  Handle<Code> ic = isolate()->stub_cache()->ComputeMonomorphicLoadIC(
-      receiver, handler, name);
-  set_target(*ic);
-}
-
-
-void KeyedLoadIC::UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                      Handle<Code> handler,
-                                      Handle<String> name,
-                                      StrictModeFlag strict_mode) {
-  if (handler->is_keyed_load_stub()) return set_target(*handler);
-  Handle<Code> ic = isolate()->stub_cache()->ComputeMonomorphicKeyedLoadIC(
-      receiver, handler, name);
-  set_target(*ic);
-}
-
-
-void StoreIC::UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                  Handle<Code> handler,
-                                  Handle<String> name,
-                                  StrictModeFlag strict_mode) {
-  if (handler->is_store_stub()) return set_target(*handler);
-  Handle<Code> ic = isolate()->stub_cache()->ComputeMonomorphicStoreIC(
-      receiver, handler, name, strict_mode);
-  set_target(*ic);
-}
-
-
-void KeyedStoreIC::UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                       Handle<Code> handler,
-                                       Handle<String> name,
-                                       StrictModeFlag strict_mode) {
-  if (handler->is_keyed_store_stub()) return set_target(*handler);
-  Handle<Code> ic = isolate()->stub_cache()->ComputeMonomorphicKeyedStoreIC(
+void IC::UpdateMonomorphicIC(Handle<HeapObject> receiver,
+                             Handle<Code> handler,
+                             Handle<String> name,
+                             StrictModeFlag strict_mode) {
+  if (!handler->is_handler()) return set_target(*handler);
+  Handle<Code> ic = isolate()->stub_cache()->ComputeMonomorphicIC(
       receiver, handler, name, strict_mode);
   set_target(*ic);
 }
@@ -1188,7 +1135,6 @@ void IC::PatchCache(State state,
       }
       break;
     case MEGAMORPHIC:
-      // Update the stub cache.
       UpdateMegamorphicCache(receiver->map(), *name, *code);
       break;
     case POLYMORPHIC:

src/ic.h

@@ -172,27 +172,17 @@ class IC {
   static inline void SetTargetAtAddress(Address address, Code* target);
   static void PostPatching(Address address, Code* target, Code* old_target);
 
-  virtual void UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                   Handle<Code> handler,
-                                   Handle<String> name,
-                                   StrictModeFlag strict_mode) {
-    set_target(*handler);
-  }
+  void UpdateMonomorphicIC(Handle<HeapObject> receiver,
+                           Handle<Code> handler,
+                           Handle<String> name,
+                           StrictModeFlag strict_mode);
+
   bool UpdatePolymorphicIC(State state,
                            Handle<HeapObject> receiver,
                            Handle<String> name,
                            Handle<Code> code,
                            StrictModeFlag strict_mode);
 
-  virtual Handle<Code> ComputePolymorphicIC(MapHandleList* receiver_maps,
-                                            CodeHandleList* handlers,
-                                            int number_of_valid_maps,
-                                            Handle<Name> name,
-                                            StrictModeFlag strict_mode) {
-    UNREACHABLE();
-    return Handle<Code>::null();
-  };
-
   void CopyICToMegamorphicCache(Handle<String> name);
   bool IsTransitionedMapOfMonomorphicTarget(Map* receiver_map);
   void PatchCache(State state,
@@ -408,17 +398,6 @@ class LoadIC: public IC {
                     Handle<Object> object,
                     Handle<String> name);
 
-  virtual void UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                   Handle<Code> handler,
-                                   Handle<String> name,
-                                   StrictModeFlag strict_mode);
-
-  virtual Handle<Code> ComputePolymorphicIC(MapHandleList* receiver_maps,
-                                            CodeHandleList* handlers,
-                                            int number_of_valid_maps,
-                                            Handle<Name> name,
-                                            StrictModeFlag strict_mode);
-
   virtual Handle<Code> ComputeLoadHandler(LookupResult* lookup,
                                           Handle<JSObject> receiver,
                                           Handle<String> name);
@@ -496,10 +475,6 @@ class KeyedLoadIC: public LoadIC {
   }
 
   // Update the inline cache.
-  virtual void UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                   Handle<Code> handler,
-                                   Handle<String> name,
-                                   StrictModeFlag strict_mode);
   virtual Handle<Code> ComputeLoadHandler(LookupResult* lookup,
                                           Handle<JSObject> receiver,
                                           Handle<String> name);
@@ -594,17 +569,6 @@ class StoreIC: public IC {
     return isolate()->builtins()->StoreIC_GlobalProxy_Strict();
   }
 
-  virtual void UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                   Handle<Code> handler,
-                                   Handle<String> name,
-                                   StrictModeFlag strict_mode);
-
-  virtual Handle<Code> ComputePolymorphicIC(MapHandleList* receiver_maps,
-                                            CodeHandleList* handlers,
-                                            int number_of_valid_maps,
-                                            Handle<Name> name,
-                                            StrictModeFlag strict_mode);
-
   // Update the inline cache and the global stub cache based on the
   // lookup result.
   void UpdateCaches(LookupResult* lookup,
@@ -715,11 +679,6 @@ class KeyedStoreIC: public StoreIC {
                                 KeyedAccessStoreMode store_mode,
                                 StrictModeFlag strict_mode);
 
-  virtual void UpdateMonomorphicIC(Handle<HeapObject> receiver,
-                                   Handle<Code> handler,
-                                   Handle<String> name,
-                                   StrictModeFlag strict_mode);
-
  private:
   void set_target(Code* code) {
     // Strict mode must be preserved across IC patching.

src/objects-inl.h

@@ -3756,7 +3756,8 @@ Code::StubType Code::type() {
 
 
 int Code::arguments_count() {
-  ASSERT(is_call_stub() || is_keyed_call_stub() || kind() == STUB);
+  ASSERT(is_call_stub() || is_keyed_call_stub() ||
+         kind() == STUB || is_handler());
   return ExtractArgumentsCountFromFlags(flags());
 }
 

src/objects.h

@@ -4863,6 +4863,9 @@ class Code: public HeapObject {
 
   // [flags]: Access to specific code flags.
   inline Kind kind();
+  inline Kind handler_kind() {
+    return static_cast<Kind>(arguments_count());
+  }
   inline InlineCacheState ic_state();  // Only valid for IC stubs.
   inline ExtraICState extra_ic_state();  // Only valid for IC stubs.
 
@@ -4881,6 +4884,7 @@ class Code: public HeapObject {
   // Testers for IC stub kinds.
   inline bool is_inline_cache_stub();
   inline bool is_debug_stub();
+  inline bool is_handler() { return kind() == HANDLER; }
   inline bool is_load_stub() { return kind() == LOAD_IC; }
   inline bool is_keyed_load_stub() { return kind() == KEYED_LOAD_IC; }
   inline bool is_store_stub() { return kind() == STORE_IC; }

src/stub-cache.cc

@@ -165,66 +165,29 @@ Handle<Code> StubCache::FindStoreHandler(Handle<Name> name,
 }
 
 
-Handle<Code> StubCache::ComputeMonomorphicLoadIC(Handle<HeapObject> receiver,
-                                                 Handle<Code> handler,
-                                                 Handle<Name> name) {
+Handle<Code> StubCache::ComputeMonomorphicIC(Handle<HeapObject> receiver,
+                                             Handle<Code> handler,
+                                             Handle<Name> name,
+                                             StrictModeFlag strict_mode) {
+  Code::Kind kind = handler->handler_kind();
   Handle<Map> map(receiver->map());
-  Handle<Code> ic = FindIC(name, map, Code::LOAD_IC, handler->type());
+  Handle<Code> ic = FindIC(name, map, kind, handler->type(), strict_mode);
   if (!ic.is_null()) return ic;
 
-  LoadStubCompiler ic_compiler(isolate());
-  ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
-
-  HeapObject::UpdateMapCodeCache(receiver, name, ic);
-  return ic;
-}
-
-
-Handle<Code> StubCache::ComputeMonomorphicKeyedLoadIC(
-    Handle<HeapObject> receiver,
-    Handle<Code> handler,
-    Handle<Name> name) {
-  Handle<Map> map(receiver->map());
-  Handle<Code> ic = FindIC(name, map, Code::KEYED_LOAD_IC, handler->type());
-  if (!ic.is_null()) return ic;
-
-  KeyedLoadStubCompiler ic_compiler(isolate());
-  ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
-
-  HeapObject::UpdateMapCodeCache(receiver, name, ic);
-  return ic;
-}
-
-
-Handle<Code> StubCache::ComputeMonomorphicStoreIC(Handle<HeapObject> receiver,
-                                                  Handle<Code> handler,
-                                                  Handle<Name> name,
-                                                  StrictModeFlag strict_mode) {
-  Handle<Map> map(receiver->map());
-  Handle<Code> ic = FindIC(
-      name, map, Code::STORE_IC, handler->type(), strict_mode);
-  if (!ic.is_null()) return ic;
-
-  StoreStubCompiler ic_compiler(isolate(), strict_mode);
-  ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
-
-  HeapObject::UpdateMapCodeCache(receiver, name, ic);
-  return ic;
-}
-
-
-Handle<Code> StubCache::ComputeMonomorphicKeyedStoreIC(
-    Handle<HeapObject> receiver,
-    Handle<Code> handler,
-    Handle<Name> name,
-    StrictModeFlag strict_mode) {
-  Handle<Map> map(receiver->map());
-  Handle<Code> ic = FindIC(
-      name, map, Code::KEYED_STORE_IC, handler->type(), strict_mode);
-  if (!ic.is_null()) return ic;
-
-  KeyedStoreStubCompiler ic_compiler(isolate(), strict_mode, STANDARD_STORE);
-  ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
+  if (kind == Code::LOAD_IC) {
+    LoadStubCompiler ic_compiler(isolate());
+    ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
+  } else if (kind == Code::KEYED_LOAD_IC) {
+    KeyedLoadStubCompiler ic_compiler(isolate());
+    ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
+  } else if (kind == Code::STORE_IC) {
+    StoreStubCompiler ic_compiler(isolate(), strict_mode);
+    ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
+  } else {
+    ASSERT(kind == Code::KEYED_STORE_IC);
+    KeyedStoreStubCompiler ic_compiler(isolate(), strict_mode, STANDARD_STORE);
+    ic = ic_compiler.CompileMonomorphicIC(map, handler, name);
+  }
 
   HeapObject::UpdateMapCodeCache(receiver, name, ic);
   return ic;
@@ -1072,30 +1035,25 @@ Handle<Code> StubCache::ComputeLoadElementPolymorphic(
 }
 
 
-Handle<Code> StubCache::ComputePolymorphicLoadIC(MapHandleList* receiver_maps,
-                                                 CodeHandleList* handlers,
-                                                 int number_of_valid_maps,
-                                                 Handle<Name> name) {
-  LoadStubCompiler ic_compiler(isolate_);
-  Code::StubType type = number_of_valid_maps == 1 ? handlers->at(0)->type()
+Handle<Code> StubCache::ComputePolymorphicIC(MapHandleList* receiver_maps,
+                                             CodeHandleList* handlers,
+                                             int number_of_valid_maps,
+                                             Handle<Name> name,
+                                             StrictModeFlag strict_mode) {
+  Handle<Code> handler = handlers->at(0);
+  Code::Kind kind = handler->handler_kind();
+  Code::StubType type = number_of_valid_maps == 1 ? handler->type()
                                                   : Code::NORMAL;
-  Handle<Code> ic = ic_compiler.CompilePolymorphicIC(
-      receiver_maps, handlers, name, type, PROPERTY);
-  return ic;
-}
-
-
-Handle<Code> StubCache::ComputePolymorphicStoreIC(MapHandleList* receiver_maps,
-                                                  CodeHandleList* handlers,
-                                                  int number_of_valid_maps,
-                                                  Handle<Name> name,
-                                                  StrictModeFlag strict_mode) {
-  StoreStubCompiler ic_compiler(isolate_, strict_mode);
-  Code::StubType type = number_of_valid_maps == 1 ? handlers->at(0)->type()
-                                                  : Code::NORMAL;
-  Handle<Code> ic = ic_compiler.CompilePolymorphicIC(
-      receiver_maps, handlers, name, type, PROPERTY);
-  return ic;
+  if (kind == Code::LOAD_IC) {
+    LoadStubCompiler ic_compiler(isolate_);
+    return ic_compiler.CompilePolymorphicIC(
+        receiver_maps, handlers, name, type, PROPERTY);
+  } else {
+    ASSERT(kind == Code::STORE_IC);
+    StoreStubCompiler ic_compiler(isolate_, strict_mode);
+    return ic_compiler.CompilePolymorphicIC(
+        receiver_maps, handlers, name, type, PROPERTY);
+  }
 }
 
 
@@ -1973,8 +1931,7 @@ Handle<Code> BaseLoadStoreStubCompiler::GetICCode(Code::Kind kind,
                                                   Code::StubType type,
                                                   Handle<Name> name,
                                                   InlineCacheState state) {
-  Code::Flags flags = Code::ComputeFlags(
-      kind, state, extra_state(), type);
+  Code::Flags flags = Code::ComputeFlags(kind, state, extra_state(), type);
   Handle<Code> code = GetCodeWithFlags(flags, name);
   PROFILE(isolate(), CodeCreateEvent(log_kind(code), *code, *name));
   JitEvent(name, code);
@@ -1982,22 +1939,9 @@ Handle<Code> BaseLoadStoreStubCompiler::GetICCode(Code::Kind kind,
 }
 
 
-Handle<Code> BaseLoadStubCompiler::GetCode(Code::Kind kind,
-                                           Code::StubType type,
-                                           Handle<Name> name) {
-  ASSERT(type != Code::NORMAL);
-  Code::Flags flags = Code::ComputeFlags(
-      Code::HANDLER, MONOMORPHIC, Code::kNoExtraICState, type, kind);
-  Handle<Code> code = GetCodeWithFlags(flags, name);
-  PROFILE(isolate(), CodeCreateEvent(log_kind(code), *code, *name));
-  JitEvent(name, code);
-  return code;
-}
-
-
-Handle<Code> BaseStoreStubCompiler::GetCode(Code::Kind kind,
-                                            Code::StubType type,
-                                            Handle<Name> name) {
+Handle<Code> BaseLoadStoreStubCompiler::GetCode(Code::Kind kind,
+                                                Code::StubType type,
+                                                Handle<Name> name) {
   ASSERT(type != Code::NORMAL);
   Code::Flags flags = Code::ComputeFlags(
       Code::HANDLER, MONOMORPHIC, extra_state(), type, kind);

src/stub-cache.h

@@ -104,23 +104,10 @@ class StubCache {
                                 Code::StubType type,
                                 StrictModeFlag strict_mode);
 
-  Handle<Code> ComputeMonomorphicLoadIC(Handle<HeapObject> receiver,
-                                        Handle<Code> handler,
-                                        Handle<Name> name);
-
-  Handle<Code> ComputeMonomorphicKeyedLoadIC(Handle<HeapObject> receiver,
-                                             Handle<Code> handler,
-                                             Handle<Name> name);
-
-  Handle<Code> ComputeMonomorphicStoreIC(Handle<HeapObject> receiver,
-                                         Handle<Code> handler,
-                                         Handle<Name> name,
-                                         StrictModeFlag strict_mode);
-
-  Handle<Code> ComputeMonomorphicKeyedStoreIC(Handle<HeapObject> receiver,
-                                              Handle<Code> handler,
-                                              Handle<Name> name,
-                                              StrictModeFlag strict_mode);
+  Handle<Code> ComputeMonomorphicIC(Handle<HeapObject> receiver,
+                                    Handle<Code> handler,
+                                    Handle<Name> name,
+                                    StrictModeFlag strict_mode);
 
   // Computes the right stub matching. Inserts the result in the
   // cache before returning.  This might compile a stub if needed.
@@ -326,16 +313,11 @@ class StubCache {
                                               KeyedAccessStoreMode store_mode,
                                               StrictModeFlag strict_mode);
 
-  Handle<Code> ComputePolymorphicLoadIC(MapHandleList* receiver_maps,
-                                        CodeHandleList* handlers,
-                                        int number_of_valid_maps,
-                                        Handle<Name> name);
-
-  Handle<Code> ComputePolymorphicStoreIC(MapHandleList* receiver_maps,
-                                         CodeHandleList* handlers,
-                                         int number_of_valid_maps,
-                                         Handle<Name> name,
-                                         StrictModeFlag strict_mode);
+  Handle<Code> ComputePolymorphicIC(MapHandleList* receiver_maps,
+                                    CodeHandleList* handlers,
+                                    int number_of_valid_maps,
+                                    Handle<Name> name,
+                                    StrictModeFlag strict_mode);
 
   // Finds the Code object stored in the Heap::non_monomorphic_cache().
   Code* FindCallInitialize(int argc, RelocInfo::Mode mode, Code::Kind kind);
@@ -697,6 +679,10 @@ class BaseLoadStoreStubCompiler: public StubCompiler {
                            Handle<Name> name,
                            Label* success);
 
+  Handle<Code> GetCode(Code::Kind kind,
+                       Code::StubType type,
+                       Handle<Name> name);
+
   Handle<Code> GetICCode(Code::Kind kind,
                          Code::StubType type,
                          Handle<Name> name,
@@ -788,10 +774,6 @@ class BaseLoadStubCompiler: public BaseLoadStoreStubCompiler {
                                    Handle<Name> name,
                                    LookupResult* lookup);
 
-  Handle<Code> GetCode(Code::Kind kind,
-                       Code::StubType type,
-                       Handle<Name> name);
-
   virtual Register receiver() { return registers_[0]; }
   virtual Register name()     { return registers_[1]; }
   virtual Register scratch1() { return registers_[2]; }
@@ -942,10 +924,6 @@ class BaseStoreStubCompiler: public BaseLoadStoreStubCompiler {
   virtual void HandlerFrontendFooter(Handle<Name> name,
                                      Label* success,
                                      Label* miss);
-  Handle<Code> GetCode(Code::Kind kind,
-                       Code::StubType type,
-                       Handle<Name> name);
-
   void GenerateRestoreName(MacroAssembler* masm,
                            Label* label,
                            Handle<Name> name);