Move backend specific files to separate directories.

src/SConscript

 # Copyright 2008 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 35 matching lines @@
     'jump-target.cc', 'log.cc', 'mark-compact.cc', 'messages.cc', 'objects.cc',
     'oprofile-agent.cc', 'parser.cc', 'property.cc', 'regexp-macro-assembler.cc',
     'regexp-macro-assembler-irregexp.cc', 'regexp-stack.cc',
     'register-allocator.cc', 'rewriter.cc', 'runtime.cc', 'scanner.cc',
     'scopeinfo.cc', 'scopes.cc', 'serialize.cc', 'snapshot-common.cc',
     'spaces.cc', 'string-stream.cc', 'stub-cache.cc', 'token.cc', 'top.cc',
     'unicode.cc', 'usage-analyzer.cc', 'utils.cc', 'v8-counters.cc',
     'v8.cc', 'v8threads.cc', 'variables.cc', 'virtual-frame.cc', 'zone.cc'
   ],
   'arch:arm': [
-    'assembler-arm.cc', 'builtins-arm.cc', 'codegen-arm.cc', 'cpu-arm.cc',
-    'disasm-arm.cc', 'debug-arm.cc', 'frames-arm.cc', 'ic-arm.cc',
-    'jump-target-arm.cc', 'macro-assembler-arm.cc',
-    'regexp-macro-assembler-arm.cc', 'register-allocator-arm.cc',
-    'stub-cache-arm.cc', 'virtual-frame-arm.cc'
+    'arm/assembler-arm.cc', 'arm/builtins-arm.cc',
+    'arm/codegen-arm.cc', 'arm/cpu-arm.cc', 'arm/disasm-arm.cc',
+    'arm/debug-arm.cc', 'arm/frames-arm.cc', 'arm/ic-arm.cc',
+    'arm/jump-target-arm.cc', 'arm/macro-assembler-arm.cc',
+    'arm/register-allocator-arm.cc', 'arm/stub-cache-arm.cc',
+    'arm/regexp-macro-assembler-arm.cc', 'arm/virtual-frame-arm.cc'
   ],
   'arch:ia32': [
-    'assembler-ia32.cc', 'builtins-ia32.cc', 'codegen-ia32.cc',
-    'cpu-ia32.cc', 'disasm-ia32.cc', 'debug-ia32.cc', 'frames-ia32.cc',
-    'ic-ia32.cc', 'jump-target-ia32.cc', 'macro-assembler-ia32.cc',
-    'regexp-macro-assembler-ia32.cc', 'register-allocator-ia32.cc',
-    'stub-cache-ia32.cc', 'virtual-frame-ia32.cc'
+    'ia32/assembler-ia32.cc', 'ia32/builtins-ia32.cc',
+    'ia32/codegen-ia32.cc', 'ia32/cpu-ia32.cc', 'ia32/disasm-ia32.cc',
+    'ia32/debug-ia32.cc', 'ia32/frames-ia32.cc', 'ia32/ic-ia32.cc',
+    'ia32/jump-target-ia32.cc', 'ia32/macro-assembler-ia32.cc',
+    'ia32/register-allocator-ia32.cc', 'ia32/stub-cache-ia32.cc',
+    'ia32/regexp-macro-assembler-ia32.cc', 'ia32/virtual-frame-ia32.cc'
   ],
-  'simulator:arm': ['simulator-arm.cc'],
+  'simulator:arm': ['arm/simulator-arm.cc'],
   'os:freebsd': ['platform-freebsd.cc', 'platform-posix.cc'],
   'os:linux':   ['platform-linux.cc', 'platform-posix.cc'],
   'os:android': ['platform-linux.cc', 'platform-posix.cc'],
   'os:macos':   ['platform-macos.cc', 'platform-posix.cc'],
   'os:nullos':  ['platform-nullos.cc'],
   'os:win32':   ['platform-win32.cc'],
   'mode:release': [],
   'mode:debug': [
     'objects-debug.cc', 'prettyprinter.cc', 'regexp-macro-assembler-tracer.cc'
   ]
@@ skipping 94 matching lines @@
     snapshot_obj = context.ConfigureObject(env, snapshot_cc, CPPPATH=['.'])
     libraries_obj = context.ConfigureObject(env, libraries_empty_src, CPPPATH=['.'])
   else:
     snapshot_obj = empty_snapshot_obj
   library_objs = [non_snapshot_files, libraries_obj, snapshot_obj]
   return (library_objs, d8_objs, [mksnapshot])
 
 
 (library_objs, d8_objs, mksnapshot) = ConfigureObjectFiles()
 Return('library_objs d8_objs mksnapshot')