Some cleanup fixes

src/arm/code-stubs-arm.cc

 // 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 4239 matching lines @@
 
   __ bind(&slowcase);
   __ TailCallRuntime(Runtime::kRegExpConstructResult, 3, 1);
 }
 
 
 static void GenerateRecordCallTarget(MacroAssembler* masm) {
   // Cache the called function in a global property cell.  Cache states
   // are uninitialized, monomorphic (indicated by a JSFunction), and
   // megamorphic.
+  // r0 : number of arguments to the construct function
   // r1 : the function to call
   // r2 : cache cell for call target
   Label initialize, done, miss, megamorphic, not_array_function;
 
   ASSERT_EQ(*TypeFeedbackCells::MegamorphicSentinel(masm->isolate()),
             masm->isolate()->heap()->undefined_value());
   ASSERT_EQ(*TypeFeedbackCells::UninitializedSentinel(masm->isolate()),
             masm->isolate()->heap()->the_hole_value());
 
   // Load the cache state into r3.
   __ ldr(r3, FieldMemOperand(r2, Cell::kValueOffset));
 
   // A monomorphic cache hit or an already megamorphic state: invoke the
   // function without changing the state.
   __ cmp(r3, r1);
   __ b(eq, &done);
 
   // If we came here, we need to see if we are the array function.
   // If we didn't have a matching function, and we didn't find the megamorph
   // sentinel, then we have in the cell either some other function or an
   // AllocationSite. Do a map check on the object in ecx.
-  Handle<Map> allocation_site_map(
-      masm->isolate()->heap()->allocation_site_map(),
-      masm->isolate());
   __ ldr(r5, FieldMemOperand(r3, 0));
   __ CompareRoot(r5, Heap::kAllocationSiteMapRootIndex);
   __ b(ne, &miss);
 
   // Make sure the function is the Array() function
   __ LoadArrayFunction(r3);
   __ cmp(r1, r3);
   __ b(ne, &megamorphic);
   __ jmp(&done);
 
@@ skipping 16 matching lines @@
   // Make sure the function is the Array() function
   __ LoadArrayFunction(r3);
   __ cmp(r1, r3);
   __ b(ne, &not_array_function);
 
   // The target function is the Array constructor,
   // Create an AllocationSite if we don't already have it, store it in the cell
   {
     FrameScope scope(masm, StackFrame::INTERNAL);
 
+    // Arguments register must be smi-tagged to call out.
     __ SmiTag(r0);
     __ push(r0);
     __ push(r1);
     __ push(r2);
 
     CreateAllocationSiteStub create_stub;
     __ CallStub(&create_stub);
 
     __ pop(r2);
     __ pop(r1);
@@ skipping 2732 matching lines @@
   __ bind(&fast_elements_case);
   GenerateCase(masm, FAST_ELEMENTS);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM