Refactor x64 named loads to agree with ia32 implementation. Remove dead code...

src/ia32/codegen-ia32.cc

Index: src/ia32/codegen-ia32.cc
===================================================================
--- src/ia32/codegen-ia32.cc	(revision 4725)
+++ src/ia32/codegen-ia32.cc	(working copy)
@@ -8598,16 +8598,16 @@
   if (loop_nesting() > 0) {
     Comment cmnt(masm_, "[ Inlined load from keyed Property");
 
+    // Use a fresh temporary to load the elements without destroying
+    // the receiver which is needed for the deferred slow case.
+    Result elements = allocator()->Allocate();
+    ASSERT(elements.is_valid());
+
     Result key = frame_->Pop();
     Result receiver = frame_->Pop();
     key.ToRegister();
     receiver.ToRegister();
 
-    // Use a fresh temporary to load the elements without destroying
-    // the receiver which is needed for the deferred slow case.
-    Result elements = allocator()->Allocate();
-    ASSERT(elements.is_valid());
-
     // Use a fresh temporary for the index and later the loaded
     // value.
     result = allocator()->Allocate();
@@ -8621,6 +8621,7 @@
     __ test(receiver.reg(), Immediate(kSmiTagMask));
     deferred->Branch(zero);
 
+    // Check that the receiver has the expected map.
     // Initially, use an invalid map. The map is patched in the IC
     // initialization code.
     __ bind(deferred->patch_site());
@@ -8654,7 +8655,6 @@
            FieldOperand(elements.reg(), FixedArray::kLengthOffset));
     deferred->Branch(above_equal);
 
-    // Load and check that the result is not the hole.
     __ mov(result.reg(), Operand(elements.reg(),
                                  result.reg(),
                                  times_4,