Use a trampoline stub to load the type feedback vector for CallICs.

src/code-stubs.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_CODE_STUBS_H_
 #define V8_CODE_STUBS_H_
 
 #include "src/allocation.h"
 #include "src/assembler.h"
 #include "src/codegen.h"
@@ skipping 21 matching lines @@
   V(CallIC_Array)                           \
   V(CEntry)                                 \
   V(CompareIC)                              \
   V(DoubleToI)                              \
   V(FunctionPrototype)                      \
   V(Instanceof)                             \
   V(InternalArrayConstructor)               \
   V(JSEntry)                                \
   V(KeyedLoadICTrampoline)                  \
   V(LoadICTrampoline)                       \
+  V(CallICTrampoline)                       \
+  V(CallIC_ArrayTrampoline)                 \
   V(LoadIndexedInterceptor)                 \
   V(LoadIndexedString)                      \
   V(MathPow)                                \
   V(ProfileEntryHook)                       \
   V(RecordWrite)                            \
   V(RegExpExec)                             \
   V(StoreArrayLiteralElement)               \
   V(StoreBufferOverflow)                    \
   V(StoreElement)                           \
   V(StringCompare)                          \
@@ skipping 770 matching lines @@
   CallICState state() const {
     return CallICState(static_cast<ExtraICState>(minor_key_));
   }
 
   // Code generation helpers.
   void GenerateMiss(MacroAssembler* masm);
 
  private:
   void PrintState(std::ostream& os) const OVERRIDE;  // NOLINT
 
-  DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunctionWithFeedback);
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunctionWithFeedbackAndVector);
   DEFINE_PLATFORM_CODE_STUB(CallIC, PlatformCodeStub);
 };
 
 
 class CallIC_ArrayStub: public CallICStub {
  public:
   CallIC_ArrayStub(Isolate* isolate, const CallICState& state_in)
       : CallICStub(isolate, state_in) {}
 
   InlineCacheState GetICState() const FINAL { return MONOMORPHIC; }
@@ skipping 1088 matching lines @@
  public:
   explicit KeyedLoadICTrampolineStub(Isolate* isolate)
       : LoadICTrampolineStub(isolate, LoadICState(0)) {}
 
   Code::Kind GetCodeKind() const OVERRIDE { return Code::KEYED_LOAD_IC; }
 
   DEFINE_PLATFORM_CODE_STUB(KeyedLoadICTrampoline, LoadICTrampolineStub);
 };
 
 
+class CallICTrampolineStub : public PlatformCodeStub {
+ public:
+  CallICTrampolineStub(Isolate* isolate, const CallICState& state)
+      : PlatformCodeStub(isolate) {
+    minor_key_ = state.GetExtraICState();
+  }
+
+  Code::Kind GetCodeKind() const OVERRIDE { return Code::CALL_IC; }
+
+  InlineCacheState GetICState() const FINAL { return DEFAULT; }
+
+  ExtraICState GetExtraICState() const FINAL {
+    return static_cast<ExtraICState>(minor_key_);
+  }
+
+ protected:
+  CallICState state() const {
+    return CallICState(static_cast<ExtraICState>(minor_key_));
+  }
+
+  DEFINE_CALL_INTERFACE_DESCRIPTOR(CallFunctionWithFeedback);
+  DEFINE_PLATFORM_CODE_STUB(CallICTrampoline, PlatformCodeStub);
+};
+
+
+class CallIC_ArrayTrampolineStub : public CallICTrampolineStub {
+ public:
+  CallIC_ArrayTrampolineStub(Isolate* isolate, const CallICState& state)
+      : CallICTrampolineStub(isolate, state) {}
+
+ private:
+  DEFINE_PLATFORM_CODE_STUB(CallIC_ArrayTrampoline, CallICTrampolineStub);
+};
+
+
 class MegamorphicLoadStub : public HydrogenCodeStub {
  public:
   MegamorphicLoadStub(Isolate* isolate, const LoadICState& state)
       : HydrogenCodeStub(isolate) {
     set_sub_minor_key(state.GetExtraICState());
   }
 
   Code::Kind GetCodeKind() const OVERRIDE { return Code::LOAD_IC; }
 
   InlineCacheState GetICState() const FINAL { return MEGAMORPHIC; }
@@ skipping 683 matching lines @@
 
 #undef DEFINE_CALL_INTERFACE_DESCRIPTOR
 #undef DEFINE_PLATFORM_CODE_STUB
 #undef DEFINE_HANDLER_CODE_STUB
 #undef DEFINE_HYDROGEN_CODE_STUB
 #undef DEFINE_CODE_STUB
 #undef DEFINE_CODE_STUB_BASE
 } }  // namespace v8::internal
 
 #endif  // V8_CODE_STUBS_H_