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

src/arm64/macro-assembler-arm64.h

 // 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.
 
 #ifndef V8_ARM64_MACRO_ASSEMBLER_ARM64_H_
 #define V8_ARM64_MACRO_ASSEMBLER_ARM64_H_
 
 #include <vector>
 
 #include "src/globals.h"
 
 #include "src/arm64/assembler-arm64-inl.h"
+#include "src/base/bits.h"
 
 // Simulator specific helpers.
 #if USE_SIMULATOR
   // TODO(all): If possible automatically prepend an indicator like
   // UNIMPLEMENTED or LOCATION.
   #define ASM_UNIMPLEMENTED(message)                                         \
   __ Debug(message, __LINE__, NO_PARAM)
   #define ASM_UNIMPLEMENTED_BREAK(message)                                   \
   __ Debug(message, __LINE__,                                                \
            FLAG_ignore_asm_unimplemented_break ? NO_PARAM : BREAK)
@@ skipping 778 matching lines @@
   inline const Register& StackPointer() const {
     return sp_;
   }
 
   // Align csp for a frame, as per ActivationFrameAlignment, and make it the
   // current stack pointer.
   inline void AlignAndSetCSPForFrame() {
     int sp_alignment = ActivationFrameAlignment();
     // AAPCS64 mandates at least 16-byte alignment.
     DCHECK(sp_alignment >= 16);
-    DCHECK(IsPowerOf2(sp_alignment));
+    DCHECK(base::bits::IsPowerOfTwo32(sp_alignment));
     Bic(csp, StackPointer(), sp_alignment - 1);
     SetStackPointer(csp);
   }
 
   // Push the system stack pointer (csp) down to allow the same to be done to
   // the current stack pointer (according to StackPointer()). This must be
   // called _before_ accessing the memory.
   //
   // This is necessary when pushing or otherwise adding things to the stack, to
   // satisfy the AAPCS64 constraint that the memory below the system stack
@@ skipping 1532 matching lines @@
 #error "Unsupported option"
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 #endif  // V8_ARM64_MACRO_ASSEMBLER_ARM64_H_