[for-in] Further refactorings and unification around for-in.

src/full-codegen/mips/full-codegen-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #if V8_TARGET_ARCH_MIPS
 
 // Note on Mips implementation:
 //
 // The result_register() for mips is the 'v0' register, which is defined
 // by the ABI to contain function return values. However, the first
@@ skipping 1061 matching lines @@
 
   // The enum cache is valid.  Load the map of the object being
   // iterated over and use the cache for the iteration.
   Label use_cache;
   __ lw(v0, FieldMemOperand(a0, HeapObject::kMapOffset));
   __ Branch(&use_cache);
 
   // Get the set of properties to enumerate.
   __ bind(&call_runtime);
   __ push(a0);  // Duplicate the enumerable object on the stack.
-  __ CallRuntime(Runtime::kGetPropertyNamesFast);
+  __ CallRuntime(Runtime::kForInEnumerate);
   PrepareForBailoutForId(stmt->EnumId(), TOS_REG);
 
   // If we got a map from the runtime call, we can do a fast
   // modification check. Otherwise, we got a fixed array, and we have
   // to do a slow check.
   Label fixed_array;
   __ lw(a2, FieldMemOperand(v0, HeapObject::kMapOffset));
   __ LoadRoot(at, Heap::kMetaMapRootIndex);
   __ Branch(&fixed_array, ne, a2, Operand(at));
 
@@ skipping 3710 matching lines @@
          reinterpret_cast<uint32_t>(
              isolate->builtins()->OsrAfterStackCheck()->entry()));
   return OSR_AFTER_STACK_CHECK;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS