Clean up the ifdefs on ARM....

src/arm/codegen-arm.cc

 // Copyright 2006-2009 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 4317 matching lines @@
 
 
 // Count leading zeros in a 32 bit word.  On ARM5 and later it uses the clz
 // instruction.  On pre-ARM5 hardware this routine gives the wrong answer for 0
 // (31 instead of 32).
 static void CountLeadingZeros(
     MacroAssembler* masm,
     Register source,
     Register scratch,
     Register zeros) {
-#ifdef __ARM_ARCH_5__
+#ifdef CAN_USE_ARMV5_INSTRUCTIONS
   __ clz(zeros, source);  // This instruction is only supported after ARM5.
 #else
   __ mov(zeros, Operand(0));
   __ mov(scratch, source);
   // Top 16.
   __ tst(scratch, Operand(0xffff0000));
   __ add(zeros, zeros, Operand(16), LeaveCC, eq);
   __ mov(scratch, Operand(scratch, LSL, 16), LeaveCC, eq);
   // Top 8.
   __ tst(scratch, Operand(0xff000000));
@@ skipping 1919 matching lines @@
 int CompareStub::MinorKey() {
   // Encode the two parameters in a unique 16 bit value.
   ASSERT(static_cast<unsigned>(cc_) >> 28 < (1 << 15));
   return (static_cast<unsigned>(cc_) >> 27) | (strict_ ? 1 : 0);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal