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

test/cctest/test-regexp.cc

 // Copyright 2012 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 26 matching lines @@
 #include "parser.h"
 #include "regexp-macro-assembler.h"
 #include "regexp-macro-assembler-irregexp.h"
 #include "string-stream.h"
 #include "zone-inl.h"
 #ifdef V8_INTERPRETED_REGEXP
 #include "interpreter-irregexp.h"
 #else  // V8_INTERPRETED_REGEXP
 #include "macro-assembler.h"
 #include "code.h"
-#ifdef V8_TARGET_ARCH_ARM
+#if V8_TARGET_ARCH_ARM
 #include "arm/assembler-arm.h"
 #include "arm/macro-assembler-arm.h"
 #include "arm/regexp-macro-assembler-arm.h"
 #endif
-#ifdef V8_TARGET_ARCH_MIPS
+#if V8_TARGET_ARCH_MIPS
 #include "mips/assembler-mips.h"
 #include "mips/macro-assembler-mips.h"
 #include "mips/regexp-macro-assembler-mips.h"
 #endif
-#ifdef V8_TARGET_ARCH_X64
+#if V8_TARGET_ARCH_X64
 #include "x64/assembler-x64.h"
 #include "x64/macro-assembler-x64.h"
 #include "x64/regexp-macro-assembler-x64.h"
 #endif
-#ifdef V8_TARGET_ARCH_IA32
+#if V8_TARGET_ARCH_IA32
 #include "ia32/assembler-ia32.h"
 #include "ia32/macro-assembler-ia32.h"
 #include "ia32/regexp-macro-assembler-ia32.h"
 #endif
 #endif  // V8_INTERPRETED_REGEXP
 
 using namespace v8::internal;
 
 
 static bool CheckParse(const char* input) {
@@ skipping 1733 matching lines @@
   ZoneList<CharacterRange> first_only(4, &zone);
   ZoneList<CharacterRange> second_only(4, &zone);
   ZoneList<CharacterRange> both(4, &zone);
 }
 
 
 TEST(Graph) {
   V8::Initialize(NULL);
   Execute("\\b\\w+\\b", false, true, true);
 }