Clean up the usage of V8_TARGET_ARCH_${arch} and V8_HOST_ARCH_${arch}

test/cctest/test-hashing.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 33 matching lines @@
 
 typedef uint32_t (*HASH_FUNCTION)();
 
 #define __ masm->
 
 
 void generate(MacroAssembler* masm, i::Vector<const uint8_t> string) {
   // GenerateHashInit takes the first character as an argument so it can't
   // handle the zero length string.
   ASSERT(string.length() > 0);
-#ifdef V8_TARGET_ARCH_IA32
+#if V8_TARGET_ARCH_IA32
   __ push(ebx);
   __ push(ecx);
   __ mov(eax, Immediate(0));
   __ mov(ebx, Immediate(string.at(0)));
   StringHelper::GenerateHashInit(masm, eax, ebx, ecx);
   for (int i = 1; i < string.length(); i++) {
     __ mov(ebx, Immediate(string.at(i)));
     StringHelper::GenerateHashAddCharacter(masm, eax, ebx, ecx);
   }
   StringHelper::GenerateHashGetHash(masm, eax, ecx);
@@ skipping 44 matching lines @@
   }
   StringHelper::GenerateHashGetHash(masm, v0);
   __ pop(kRootRegister);
   __ jr(ra);
   __ nop();
 #endif
 }
 
 
 void generate(MacroAssembler* masm, uint32_t key) {
-#ifdef V8_TARGET_ARCH_IA32
+#if V8_TARGET_ARCH_IA32
   __ push(ebx);
   __ mov(eax, Immediate(key));
   __ GetNumberHash(eax, ebx);
   __ pop(ebx);
   __ Ret();
 #elif V8_TARGET_ARCH_X64
   __ push(kRootRegister);
   __ InitializeRootRegister();
   __ push(rbx);
   __ movq(rax, Immediate(key));
@@ skipping 133 matching lines @@
   // Some pseudo-random numbers
   static const uint32_t kLimit = 1000;
   for (uint32_t i = 0; i < 5; i++) {
     for (uint32_t j = 0; j < 5; j++) {
       check(PseudoRandom(i, j) % kLimit);
     }
   }
 }
 
 #undef __