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

src/a64/stub-cache-a64.cc

 // Copyright 2013 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 255 matching lines @@
   __ Ldr(prototype, FieldMemOperand(prototype, Map::kPrototypeOffset));
 }
 
 
 void StubCompiler::GenerateFastPropertyLoad(MacroAssembler* masm,
                                             Register dst,
                                             Register src,
                                             bool inobject,
                                             int index,
                                             Representation representation) {
-  ASSERT(!FLAG_track_double_fields || !representation.IsDouble());
+  ASSERT(!representation.IsDouble());
   USE(representation);
   if (inobject) {
     int offset = index * kPointerSize;
     __ Ldr(dst, FieldMemOperand(src, offset));
   } else {
     // Calculate the offset into the properties array.
     int offset = index * kPointerSize + FixedArray::kHeaderSize;
     __ Ldr(dst, FieldMemOperand(src, JSObject::kPropertiesOffset));
     __ Ldr(dst, FieldMemOperand(dst, offset));
   }
@@ skipping 149 matching lines @@
   DescriptorArray* descriptors = transition->instance_descriptors();
   PropertyDetails details = descriptors->GetDetails(descriptor);
   Representation representation = details.representation();
   ASSERT(!representation.IsNone());
 
   if (details.type() == CONSTANT) {
     Handle<Object> constant(descriptors->GetValue(descriptor), masm->isolate());
     __ LoadObject(scratch1, constant);
     __ Cmp(value_reg, scratch1);
     __ B(ne, miss_label);
-  } else if (FLAG_track_fields && representation.IsSmi()) {
+  } else if (representation.IsSmi()) {
     __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
+  } else if (representation.IsHeapObject()) {
     __ JumpIfSmi(value_reg, miss_label);
-  } else if (FLAG_track_double_fields && representation.IsDouble()) {
+  } else if (representation.IsDouble()) {
     Label do_store, heap_number;
     __ AllocateHeapNumber(storage_reg, slow, scratch1, scratch2);
 
     // TODO(jbramley): Is fp_scratch the most appropriate FP scratch register?
     // It's only used in Fcmp, but it's not really safe to use it like this.
     __ JumpIfNotSmi(value_reg, &heap_number);
     __ SmiUntagToDouble(fp_scratch, value_reg);
     __ B(&do_store);
 
     __ Bind(&heap_number);
@@ skipping 52 matching lines @@
   index -= object->map()->inobject_properties();
 
   // TODO(verwaest): Share this code as a code stub.
   SmiCheck smi_check = representation.IsTagged()
       ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
   if (index < 0) {
     // Set the property straight into the object.
     int offset = object->map()->instance_size() + (index * kPointerSize);
     // TODO(jbramley): This construct appears in several places in this
     // function. Try to clean it up, perhaps using a result_reg.
-    if (FLAG_track_double_fields && representation.IsDouble()) {
+    if (representation.IsDouble()) {
       __ Str(storage_reg, FieldMemOperand(receiver_reg, offset));
     } else {
       __ Str(value_reg, FieldMemOperand(receiver_reg, offset));
     }
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Update the write barrier for the array address.
-      if (!FLAG_track_double_fields || !representation.IsDouble()) {
+      if (!representation.IsDouble()) {
         __ Mov(storage_reg, value_reg);
       }
       __ RecordWriteField(receiver_reg,
                           offset,
                           storage_reg,
                           scratch1,
                           kLRHasNotBeenSaved,
                           kDontSaveFPRegs,
                           EMIT_REMEMBERED_SET,
                           smi_check);
     }
   } else {
     // Write to the properties array.
     int offset = index * kPointerSize + FixedArray::kHeaderSize;
     // Get the properties array
     __ Ldr(scratch1,
            FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
-    if (FLAG_track_double_fields && representation.IsDouble()) {
+    if (representation.IsDouble()) {
       __ Str(storage_reg, FieldMemOperand(scratch1, offset));
     } else {
       __ Str(value_reg, FieldMemOperand(scratch1, offset));
     }
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Update the write barrier for the array address.
-      if (!FLAG_track_double_fields || !representation.IsDouble()) {
+      if (!representation.IsDouble()) {
         __ Mov(storage_reg, value_reg);
       }
       __ RecordWriteField(scratch1,
                           offset,
                           storage_reg,
                           receiver_reg,
                           kLRHasNotBeenSaved,
                           kDontSaveFPRegs,
                           EMIT_REMEMBERED_SET,
                           smi_check);
@@ skipping 29 matching lines @@
 
   int index = lookup->GetFieldIndex().field_index();
 
   // Adjust for the number of properties stored in the object. Even in the
   // face of a transition we can use the old map here because the size of the
   // object and the number of in-object properties is not going to change.
   index -= object->map()->inobject_properties();
 
   Representation representation = lookup->representation();
   ASSERT(!representation.IsNone());
-  if (FLAG_track_fields && representation.IsSmi()) {
+  if (representation.IsSmi()) {
     __ JumpIfNotSmi(value_reg, miss_label);
-  } else if (FLAG_track_heap_object_fields && representation.IsHeapObject()) {
+  } else if (representation.IsHeapObject()) {
     __ JumpIfSmi(value_reg, miss_label);
-  } else if (FLAG_track_double_fields && representation.IsDouble()) {
+  } else if (representation.IsDouble()) {
     // Load the double storage.
     if (index < 0) {
       int offset = (index * kPointerSize) + object->map()->instance_size();
       __ Ldr(scratch1, FieldMemOperand(receiver_reg, offset));
     } else {
       int offset = (index * kPointerSize) + FixedArray::kHeaderSize;
       __ Ldr(scratch1,
              FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
       __ Ldr(scratch1, FieldMemOperand(scratch1, offset));
     }
@@ skipping 21 matching lines @@
   }
 
   // TODO(verwaest): Share this code as a code stub.
   SmiCheck smi_check = representation.IsTagged()
       ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
   if (index < 0) {
     // Set the property straight into the object.
     int offset = object->map()->instance_size() + (index * kPointerSize);
     __ Str(value_reg, FieldMemOperand(receiver_reg, offset));
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Skip updating write barrier if storing a smi.
       __ JumpIfSmi(value_reg, &exit);
 
       // Update the write barrier for the array address.
       // Pass the now unused name_reg as a scratch register.
       __ Mov(name_reg, value_reg);
       __ RecordWriteField(receiver_reg,
                           offset,
                           name_reg,
                           scratch1,
                           kLRHasNotBeenSaved,
                           kDontSaveFPRegs,
                           EMIT_REMEMBERED_SET,
                           smi_check);
     }
   } else {
     // Write to the properties array.
     int offset = index * kPointerSize + FixedArray::kHeaderSize;
     // Get the properties array
     __ Ldr(scratch1,
            FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
     __ Str(value_reg, FieldMemOperand(scratch1, offset));
 
-    if (!FLAG_track_fields || !representation.IsSmi()) {
+    if (!representation.IsSmi()) {
       // Skip updating write barrier if storing a smi.
       __ JumpIfSmi(value_reg, &exit);
 
       // Update the write barrier for the array address.
       // Ok to clobber receiver_reg and name_reg, since we return.
       __ Mov(name_reg, value_reg);
       __ RecordWriteField(scratch1,
                           offset,
                           name_reg,
                           receiver_reg,
@@ skipping 850 matching lines @@
 
   // Miss case, call the runtime.
   __ Bind(&miss);
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_A64