Fix build for ARM in release mode after r10531.

src/arm/code-stubs-arm.cc

 // Copyright 2011 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 5112 matching lines @@
   __ 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.
   // r1 : the function to call
   // r2 : cache cell for call target
-  Isolate* isolate = masm->isolate();
   Label done;
 
-  ASSERT_EQ(*TypeFeedbackCells::MegamorphicSentinel(isolate),
-            isolate->heap()->undefined_value());
-  ASSERT_EQ(*TypeFeedbackCells::UninitializedSentinel(isolate),
-            isolate->heap()->the_hole_value());
+  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, JSGlobalPropertyCell::kValueOffset));
 
   // A monomorphic cache hit or an already megamorphic state: invoke the
   // function without changing the state.
   __ cmp(r3, r1);
   __ b(eq, &done);
   __ CompareRoot(r3, Heap::kUndefinedValueRootIndex);
   __ b(eq, &done);
@@ skipping 2231 matching lines @@
   __ StoreNumberToDoubleElements(r0, r3, r1, r5, r6, r7, r9, r10,
                                  &slow_elements);
   __ Ret();
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM