[stubs] Cleanup CSA::BitFieldDecode() and friends.

src/interpreter/interpreter.cc

 // Copyright 2015 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 "src/interpreter/interpreter.h"
 
 #include <fstream>
 #include <memory>
 
 #include "src/ast/prettyprinter.h"
@@ skipping 2089 matching lines @@
 void Interpreter::DoCreateObjectLiteral(InterpreterAssembler* assembler) {
   Node* literal_index_raw = __ BytecodeOperandIdx(1);
   Node* literal_index = __ SmiTag(literal_index_raw);
   Node* bytecode_flags = __ BytecodeOperandFlag(2);
   Node* closure = __ LoadRegister(Register::function_closure());
 
   // Check if we can do a fast clone or have to call the runtime.
   Label if_fast_clone(assembler),
       if_not_fast_clone(assembler, Label::kDeferred);
   Node* fast_clone_properties_count =
-      __ BitFieldDecode<CreateObjectLiteralFlags::FastClonePropertiesCountBits>(
+      __ DecodeWord32<CreateObjectLiteralFlags::FastClonePropertiesCountBits>(
           bytecode_flags);
   __ Branch(fast_clone_properties_count, &if_fast_clone, &if_not_fast_clone);
 
   __ Bind(&if_fast_clone);
   {
     // If we can do a fast clone do the fast-path in FastCloneShallowObjectStub.
     Node* result = FastCloneShallowObjectStub::GenerateFastPath(
         assembler, &if_not_fast_clone, closure, literal_index,
         fast_clone_properties_count);
     __ StoreRegister(result, __ BytecodeOperandReg(3));
@@ skipping 516 matching lines @@
   __ StoreObjectField(generator, JSGeneratorObject::kContinuationOffset,
       __ SmiTag(new_state));
   __ SetAccumulator(old_state);
 
   __ Dispatch();
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8