A64: Minor cleaning in StoreStubCompiler::GenerateStoreField.

src/a64/stub-cache-a64.cc

Index: src/a64/stub-cache-a64.cc
diff --git a/src/a64/stub-cache-a64.cc b/src/a64/stub-cache-a64.cc
index 291da65d44f4113e2c9ff9f226a766571238237a..0d1ecd2d4e83caf51aa6ac9a15b1be3b2fd8750c 100644
--- a/src/a64/stub-cache-a64.cc
+++ b/src/a64/stub-cache-a64.cc
@@ -461,16 +461,15 @@ void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
   // TODO(verwaest): Share this code as a code stub.
   SmiCheck smi_check = representation.IsTagged()
       ? INLINE_SMI_CHECK : OMIT_SMI_CHECK;
+  Register prop_reg =
+    (FLAG_track_double_fields && representation.IsDouble()) ? storage_reg

[ulan, 2014/03/20 10:39:37]

why FLAG_track_double_fields?

+                                                            : value_reg;
   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 (representation.IsDouble()) {
-      __ Str(storage_reg, FieldMemOperand(receiver_reg, offset));
-    } else {
-      __ Str(value_reg, FieldMemOperand(receiver_reg, offset));
-    }
+    __ Str(prop_reg, FieldMemOperand(receiver_reg, offset));
 
     if (!representation.IsSmi()) {
       // Update the write barrier for the array address.
@@ -492,11 +491,7 @@ void StoreStubCompiler::GenerateStoreTransition(MacroAssembler* masm,
     // Get the properties array
     __ Ldr(scratch1,
            FieldMemOperand(receiver_reg, JSObject::kPropertiesOffset));
-    if (representation.IsDouble()) {
-      __ Str(storage_reg, FieldMemOperand(scratch1, offset));
-    } else {
-      __ Str(value_reg, FieldMemOperand(scratch1, offset));
-    }
+    __ Str(prop_reg, FieldMemOperand(scratch1, offset));
 
     if (!representation.IsSmi()) {
       // Update the write barrier for the array address.