First step to cleanup the power-of-2 mess.

src/arm64/macro-assembler-arm64.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_ARM64
 
+#include "src/base/bits.h"
 #include "src/bootstrapper.h"
 #include "src/codegen.h"
 #include "src/cpu-profiler.h"
 #include "src/debug.h"
 #include "src/isolate-inl.h"
 #include "src/runtime.h"
 
 namespace v8 {
 namespace internal {
 
@@ skipping 2033 matching lines @@
 
   // If the stack pointer is not csp, we need to derive an aligned csp from the
   // current stack pointer.
   const Register old_stack_pointer = StackPointer();
   if (!csp.Is(old_stack_pointer)) {
     AssertStackConsistency();
 
     int sp_alignment = ActivationFrameAlignment();
     // The ABI mandates at least 16-byte alignment.
     DCHECK(sp_alignment >= 16);
-    DCHECK(IsPowerOf2(sp_alignment));
+    DCHECK(base::bits::IsPowerOfTwo32(sp_alignment));
 
     // The current stack pointer is a callee saved register, and is preserved
     // across the call.
     DCHECK(kCalleeSaved.IncludesAliasOf(old_stack_pointer));
 
     // Align and synchronize the system stack pointer with jssp.
     Bic(csp, old_stack_pointer, sp_alignment - 1);
     SetStackPointer(csp);
   }
 
@@ skipping 3351 matching lines @@
   }
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64