Add "has fast elements" bit to maps and use it in inlined keyed loads.

src/arm/ic-arm.cc

 // Copyright 2006-2008 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 912 matching lines @@
 }
 
 
 bool KeyedLoadIC::PatchInlinedLoad(Address address, Object* map) {
   Address inline_end_address;
   if (!IsInlinedICSite(address, &inline_end_address)) return false;
 
   // Patch the map check.
   Address ldr_map_instr_address =
       inline_end_address -
-      (CodeGenerator::kInlinedKeyedLoadInstructionsAfterPatch *
+      (CodeGenerator::GetInlinedKeyedLoadInstructionsAfterPatch() *
       Assembler::kInstrSize);
   Assembler::set_target_address_at(ldr_map_instr_address,
                                    reinterpret_cast<Address>(map));
   return true;
 }
 
 
 void KeyedStoreIC::ClearInlinedVersion(Address address) {
   // Insert null as the elements map to check for.  This will make
   // sure that the elements fast-case map check fails so that control
@@ skipping 1193 matching lines @@
   GenerateMiss(masm);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM