Convert ElementsKind into a BitField

src/mips/code-stubs-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.
 
 #include "v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "bootstrapper.h"
 #include "code-stubs.h"
@@ skipping 5331 matching lines @@
         t0, Operand(MAP_TYPE));
   }
 
   // Figure out the right elements kind.
   __ lw(a3, FieldMemOperand(a1, JSFunction::kPrototypeOrInitialMapOffset));
 
   // Load the map's "bit field 2" into a3. We only need the first byte,
   // but the following bit field extraction takes care of that anyway.
   __ lbu(a3, FieldMemOperand(a3, Map::kBitField2Offset));
   // Retrieve elements_kind from bit field 2.
-  __ Ext(a3, a3, Map::kElementsKindShift, Map::kElementsKindBitCount);
+  __ DecodeField<Map::ElementsKindBits>(a3);
 
   if (FLAG_debug_code) {
     Label done;
     __ Branch(&done, eq, a3, Operand(FAST_ELEMENTS));
     __ Assert(
         eq, kInvalidElementsKindForInternalArrayOrInternalPackedArray,
         a3, Operand(FAST_HOLEY_ELEMENTS));
     __ bind(&done);
   }
 
@@ skipping 138 matching lines @@
                               MemOperand(fp, 6 * kPointerSize),
                               NULL);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS