Removing FLAG_vector_ics.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index 2c5fd6820f38cfde6e57bcafa8a5e2a0eb09376b..c126c4f5c91b0b73d9884f064ddf8ef735adfa8b 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -77,7 +77,6 @@ namespace internal {
   V(LoadScriptContextField)                 \
   V(LoadDictionaryElement)                  \
   V(LoadFastElement)                        \
-  V(MegamorphicLoad)                        \
   V(NameDictionaryLookup)                   \
   V(NumberToString)                         \
   V(Typeof)                                 \
@@ -987,10 +986,7 @@ class FunctionPrototypeStub : public PlatformCodeStub {
   // translated to a hydrogen code stub, a new CallInterfaceDescriptor
   // should be created that just uses that register for more efficient code.
   CallInterfaceDescriptor GetCallInterfaceDescriptor() override {
-    if (FLAG_vector_ics) {
-      return VectorLoadICDescriptor(isolate());
-    }
-    return LoadDescriptor(isolate());
+    return VectorLoadICDescriptor(isolate());
   }
 
   DEFINE_PLATFORM_CODE_STUB(FunctionPrototype, PlatformCodeStub);
@@ -2076,10 +2072,7 @@ class LoadDictionaryElementStub : public HydrogenCodeStub {
       : HydrogenCodeStub(isolate) {}
 
   CallInterfaceDescriptor GetCallInterfaceDescriptor() override {
-    if (FLAG_vector_ics) {
-      return VectorLoadICDescriptor(isolate());
-    }
-    return LoadDescriptor(isolate());
+    return VectorLoadICDescriptor(isolate());
   }
 
   DEFINE_HYDROGEN_CODE_STUB(LoadDictionaryElement, HydrogenCodeStub);
@@ -2173,32 +2166,6 @@ class CallIC_ArrayTrampolineStub : public 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; }
-
-  ExtraICState GetExtraICState() const final {
-    return static_cast<ExtraICState>(sub_minor_key());
-  }
-
-  CallInterfaceDescriptor GetCallInterfaceDescriptor() override {
-    if (FLAG_vector_ics) {
-      return VectorLoadICDescriptor(isolate());
-    }
-    return LoadDescriptor(isolate());
-  }
-
-  DEFINE_HYDROGEN_CODE_STUB(MegamorphicLoad, HydrogenCodeStub);
-};
-
-
 class VectorRawLoadStub : public PlatformCodeStub {
  public:
   explicit VectorRawLoadStub(Isolate* isolate, const LoadICState& state)
@@ -2379,10 +2346,7 @@ class LoadFastElementStub : public HydrogenCodeStub {
   class CanConvertHoleToUndefined : public BitField<bool, 9, 1> {};
 
   CallInterfaceDescriptor GetCallInterfaceDescriptor() override {
-    if (FLAG_vector_ics) {
-      return VectorLoadICDescriptor(isolate());
-    }
-    return LoadDescriptor(isolate());
+    return VectorLoadICDescriptor(isolate());
   }
 
   DEFINE_HYDROGEN_CODE_STUB(LoadFastElement, HydrogenCodeStub);