Remove all uses of field-tracking flags that do not make decisions but are subject to existing info…

src/hydrogen-instructions.h

 // Copyright 2012 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 5808 matching lines @@
   }
 
   static HObjectAccess ForNextFunctionLinkPointer() {
     return HObjectAccess(kInobject, JSFunction::kNextFunctionLinkOffset);
   }
 
   static HObjectAccess ForArrayLength(ElementsKind elements_kind) {
     return HObjectAccess(
         kArrayLengths,
         JSArray::kLengthOffset,
-        IsFastElementsKind(elements_kind) &&
-            FLAG_track_fields
-                ? Representation::Smi() : Representation::Tagged());
+        IsFastElementsKind(elements_kind)
+            ? Representation::Smi() : Representation::Tagged());
   }
 
   static HObjectAccess ForAllocationSiteOffset(int offset);
 
   static HObjectAccess ForAllocationSiteList() {
     return HObjectAccess(kExternalMemory, 0, Representation::Tagged(),
                          Handle<String>::null(), false, false);
   }
 
   static HObjectAccess ForFixedArrayLength() {
     return HObjectAccess(
         kArrayLengths,
         FixedArray::kLengthOffset,
-        FLAG_track_fields ? Representation::Smi() : Representation::Tagged());
+        Representation::Smi());
   }
 
   static HObjectAccess ForStringHashField() {
     return HObjectAccess(kInobject,
                          String::kHashFieldOffset,
                          Representation::Integer32());
   }
 
   static HObjectAccess ForStringLength() {
     STATIC_ASSERT(String::kMaxLength <= Smi::kMaxValue);
     return HObjectAccess(
         kStringLengths,
         String::kLengthOffset,
-        FLAG_track_fields ? Representation::Smi() : Representation::Tagged());
+        Representation::Smi());
   }
 
   static HObjectAccess ForConsStringFirst() {
     return HObjectAccess(kInobject, ConsString::kFirstOffset);
   }
 
   static HObjectAccess ForConsStringSecond() {
     return HObjectAccess(kInobject, ConsString::kSecondOffset);
   }
 
@@ skipping 270 matching lines @@
       set_type(HType::Smi());
       if (SmiValuesAre32Bits()) {
         set_representation(Representation::Integer32());
       } else {
         set_representation(representation);
       }
     } else if (representation.IsDouble() ||
                representation.IsExternal() ||
                representation.IsInteger32()) {
       set_representation(representation);
-    } else if (FLAG_track_heap_object_fields &&
-               representation.IsHeapObject()) {
+    } else if (representation.IsHeapObject()) {
       set_type(HType::NonPrimitive());
       set_representation(Representation::Tagged());
     } else {
       set_representation(Representation::Tagged());
     }
     access.SetGVNFlags(this, LOAD);
   }
 
   virtual bool IsDeletable() const V8_OVERRIDE { return true; }
 
@@ skipping 377 matching lines @@
     ASSERT(!has_transition());  // Only set once.
     Handle<Map> map = Handle<Map>::cast(map_constant->handle(info->isolate()));
     if (map->CanBeDeprecated()) {
       map->AddDependentCompilationInfo(DependentCode::kTransitionGroup, info);
     }
     SetOperandAt(2, map_constant);
     has_transition_ = true;
   }
 
   bool NeedsWriteBarrier() {
-    ASSERT(!(FLAG_track_double_fields && field_representation().IsDouble()) ||
-           !has_transition());
+    ASSERT(!field_representation().IsDouble() || !has_transition());
     if (IsSkipWriteBarrier()) return false;
     if (field_representation().IsDouble()) return false;
     if (field_representation().IsSmi()) return false;
     if (field_representation().IsInteger32()) return false;
     if (field_representation().IsExternal()) return false;
     return StoringValueNeedsWriteBarrier(value()) &&
         ReceiverObjectNeedsWriteBarrier(object(), value(),
                                         new_space_dominator());
   }
 
@@ skipping 921 matching lines @@
   virtual bool IsDeletable() const V8_OVERRIDE { return true; }
 };
 
 
 #undef DECLARE_INSTRUCTION
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_INSTRUCTIONS_H_