[interpreter] Remove OperandScale from front stages of pipeline.

src/interpreter/bytecode-array-builder.cc

Index: src/interpreter/bytecode-array-builder.cc
diff --git a/src/interpreter/bytecode-array-builder.cc b/src/interpreter/bytecode-array-builder.cc
index 231a9a25af01946fce1a4374bf3b96b467c67e9c..20e8b71b001c1f360c70056969518b37b8f0cbfe 100644
--- a/src/interpreter/bytecode-array-builder.cc
+++ b/src/interpreter/bytecode-array-builder.cc
@@ -105,63 +105,48 @@ void BytecodeArrayBuilder::AttachSourceInfo(BytecodeNode* node) {
   }
 }
 
-void BytecodeArrayBuilder::Output(Bytecode bytecode) {
-  BytecodeNode node(bytecode);
+void BytecodeArrayBuilder::Output(Bytecode bytecode, uint32_t operand0,
+                                  uint32_t operand1, uint32_t operand2,
+                                  uint32_t operand3) {
+  DCHECK(OperandsAreValid(bytecode, 4, operand0, operand1, operand2, operand3));
+  BytecodeNode node(bytecode, operand0, operand1, operand2, operand3);
   AttachSourceInfo(&node);
   pipeline()->Write(&node);
 }
 
-void BytecodeArrayBuilder::OutputScaled(Bytecode bytecode,
-                                        OperandScale operand_scale,
-                                        uint32_t operand0, uint32_t operand1,
-                                        uint32_t operand2, uint32_t operand3) {
-  DCHECK(OperandIsValid(bytecode, operand_scale, 0, operand0));
-  DCHECK(OperandIsValid(bytecode, operand_scale, 1, operand1));
-  DCHECK(OperandIsValid(bytecode, operand_scale, 2, operand2));
-  DCHECK(OperandIsValid(bytecode, operand_scale, 3, operand3));
-  BytecodeNode node(bytecode, operand0, operand1, operand2, operand3,
-                    operand_scale);
+void BytecodeArrayBuilder::Output(Bytecode bytecode, uint32_t operand0,
+                                  uint32_t operand1, uint32_t operand2) {
+  DCHECK(OperandsAreValid(bytecode, 3, operand0, operand1, operand2));
+  BytecodeNode node(bytecode, operand0, operand1, operand2);
   AttachSourceInfo(&node);
   pipeline()->Write(&node);
 }
 
-void BytecodeArrayBuilder::OutputScaled(Bytecode bytecode,
-                                        OperandScale operand_scale,
-                                        uint32_t operand0, uint32_t operand1,
-                                        uint32_t operand2) {
-  DCHECK(OperandIsValid(bytecode, operand_scale, 0, operand0));
-  DCHECK(OperandIsValid(bytecode, operand_scale, 1, operand1));
-  DCHECK(OperandIsValid(bytecode, operand_scale, 2, operand2));
-  BytecodeNode node(bytecode, operand0, operand1, operand2, operand_scale);
+void BytecodeArrayBuilder::Output(Bytecode bytecode, uint32_t operand0,
+                                  uint32_t operand1) {
+  DCHECK(OperandsAreValid(bytecode, 2, operand0, operand1));
+  BytecodeNode node(bytecode, operand0, operand1);
   AttachSourceInfo(&node);
   pipeline()->Write(&node);
 }
 
-void BytecodeArrayBuilder::OutputScaled(Bytecode bytecode,
-                                        OperandScale operand_scale,
-                                        uint32_t operand0, uint32_t operand1) {
-  DCHECK(OperandIsValid(bytecode, operand_scale, 0, operand0));
-  DCHECK(OperandIsValid(bytecode, operand_scale, 1, operand1));
-  BytecodeNode node(bytecode, operand0, operand1, operand_scale);
+void BytecodeArrayBuilder::Output(Bytecode bytecode, uint32_t operand0) {
+  DCHECK(OperandsAreValid(bytecode, 1, operand0));
+  BytecodeNode node(bytecode, operand0);
   AttachSourceInfo(&node);
   pipeline()->Write(&node);
 }
 
-void BytecodeArrayBuilder::OutputScaled(Bytecode bytecode,
-                                        OperandScale operand_scale,
-                                        uint32_t operand0) {
-  DCHECK(OperandIsValid(bytecode, operand_scale, 0, operand0));
-  BytecodeNode node(bytecode, operand0, operand_scale);
+void BytecodeArrayBuilder::Output(Bytecode bytecode) {
+  DCHECK(OperandsAreValid(bytecode, 0));
+  BytecodeNode node(bytecode);
   AttachSourceInfo(&node);
   pipeline()->Write(&node);
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::BinaryOperation(Token::Value op,
                                                             Register reg) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(reg.SizeOfOperand());
-  OutputScaled(BytecodeForBinaryOperation(op), operand_scale,
-               RegisterOperand(reg));
+  Output(BytecodeForBinaryOperation(op), RegisterOperand(reg));
   return *this;
 }
 
@@ -183,10 +168,7 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::TypeOf() {
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CompareOperation(Token::Value op,
                                                              Register reg) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(reg.SizeOfOperand());
-  OutputScaled(BytecodeForCompareOperation(op), operand_scale,
-               RegisterOperand(reg));
+  Output(BytecodeForCompareOperation(op), RegisterOperand(reg));
   return *this;
 }
 
@@ -196,19 +178,14 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::LoadLiteral(
   if (raw_smi == 0) {
     Output(Bytecode::kLdaZero);
   } else {
-    OperandSize operand_size = Bytecodes::SizeForSignedOperand(raw_smi);
-    OperandScale operand_scale = Bytecodes::OperandSizesToScale(operand_size);
-    OutputScaled(Bytecode::kLdaSmi, operand_scale,
-                 SignedOperand(raw_smi, operand_size));
+    Output(Bytecode::kLdaSmi, SignedOperand(raw_smi));
   }
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadLiteral(Handle<Object> object) {
   size_t entry = GetConstantPoolEntry(object);
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(Bytecodes::SizeForUnsignedOperand(entry));
-  OutputScaled(Bytecode::kLdaConstant, operand_scale, UnsignedOperand(entry));
+  Output(Bytecode::kLdaConstant, UnsignedOperand(entry));
   return *this;
 }
 
@@ -239,27 +216,20 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::LoadFalse() {
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadAccumulatorWithRegister(
     Register reg) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(reg.SizeOfOperand());
-  OutputScaled(Bytecode::kLdar, operand_scale, RegisterOperand(reg));
+  Output(Bytecode::kLdar, RegisterOperand(reg));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::StoreAccumulatorInRegister(
     Register reg) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(reg.SizeOfOperand());
-  OutputScaled(Bytecode::kStar, operand_scale, RegisterOperand(reg));
+  Output(Bytecode::kStar, RegisterOperand(reg));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::MoveRegister(Register from,
                                                          Register to) {
   DCHECK(from != to);
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(from.SizeOfOperand(), to.SizeOfOperand());
-  OutputScaled(Bytecode::kMov, operand_scale, RegisterOperand(from),
-               RegisterOperand(to));
+  Output(Bytecode::kMov, RegisterOperand(from), RegisterOperand(to));
   return *this;
 }
 
@@ -269,11 +239,7 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::LoadGlobal(
   // operand rather than having extra bytecodes.
   Bytecode bytecode = BytecodeForLoadGlobal(typeof_mode);
   size_t name_index = GetConstantPoolEntry(name);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(name_index),
-      Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(bytecode, operand_scale, UnsignedOperand(name_index),
-               UnsignedOperand(feedback_slot));
+  Output(bytecode, UnsignedOperand(name_index), UnsignedOperand(feedback_slot));
   return *this;
 }
 
@@ -281,29 +247,21 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::StoreGlobal(
     const Handle<String> name, int feedback_slot, LanguageMode language_mode) {
   Bytecode bytecode = BytecodeForStoreGlobal(language_mode);
   size_t name_index = GetConstantPoolEntry(name);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(name_index),
-      Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(bytecode, operand_scale, UnsignedOperand(name_index),
-               UnsignedOperand(feedback_slot));
+  Output(bytecode, UnsignedOperand(name_index), UnsignedOperand(feedback_slot));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadContextSlot(Register context,
                                                             int slot_index) {
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      context.SizeOfOperand(), Bytecodes::SizeForUnsignedOperand(slot_index));
-  OutputScaled(Bytecode::kLdaContextSlot, operand_scale,
-               RegisterOperand(context), UnsignedOperand(slot_index));
+  Output(Bytecode::kLdaContextSlot, RegisterOperand(context),
+         UnsignedOperand(slot_index));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::StoreContextSlot(Register context,
                                                              int slot_index) {
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      context.SizeOfOperand(), Bytecodes::SizeForUnsignedOperand(slot_index));
-  OutputScaled(Bytecode::kStaContextSlot, operand_scale,
-               RegisterOperand(context), UnsignedOperand(slot_index));
+  Output(Bytecode::kStaContextSlot, RegisterOperand(context),
+         UnsignedOperand(slot_index));
   return *this;
 }
 
@@ -313,9 +271,7 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::LoadLookupSlot(
                           ? Bytecode::kLdaLookupSlotInsideTypeof
                           : Bytecode::kLdaLookupSlot;
   size_t name_index = GetConstantPoolEntry(name);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(name_index));
-  OutputScaled(bytecode, operand_scale, UnsignedOperand(name_index));
+  Output(bytecode, UnsignedOperand(name_index));
   return *this;
 }
 
@@ -323,30 +279,22 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::StoreLookupSlot(
     const Handle<String> name, LanguageMode language_mode) {
   Bytecode bytecode = BytecodeForStoreLookupSlot(language_mode);
   size_t name_index = GetConstantPoolEntry(name);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(name_index));
-  OutputScaled(bytecode, operand_scale, UnsignedOperand(name_index));
+  Output(bytecode, UnsignedOperand(name_index));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadNamedProperty(
     Register object, const Handle<Name> name, int feedback_slot) {
   size_t name_index = GetConstantPoolEntry(name);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      object.SizeOfOperand(), Bytecodes::SizeForUnsignedOperand(name_index),
-      Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(Bytecode::kLdaNamedProperty, operand_scale,
-               RegisterOperand(object), UnsignedOperand(name_index),
-               UnsignedOperand(feedback_slot));
+  Output(Bytecode::kLdaNamedProperty, RegisterOperand(object),
+         UnsignedOperand(name_index), UnsignedOperand(feedback_slot));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::LoadKeyedProperty(
     Register object, int feedback_slot) {
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      object.SizeOfOperand(), Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(Bytecode::kLdaKeyedProperty, operand_scale,
-               RegisterOperand(object), UnsignedOperand(feedback_slot));
+  Output(Bytecode::kLdaKeyedProperty, RegisterOperand(object),
+         UnsignedOperand(feedback_slot));
   return *this;
 }
 
@@ -355,11 +303,8 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::StoreNamedProperty(
     LanguageMode language_mode) {
   Bytecode bytecode = BytecodeForStoreNamedProperty(language_mode);
   size_t name_index = GetConstantPoolEntry(name);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      object.SizeOfOperand(), Bytecodes::SizeForUnsignedOperand(name_index),
-      Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(bytecode, operand_scale, RegisterOperand(object),
-               UnsignedOperand(name_index), UnsignedOperand(feedback_slot));
+  Output(bytecode, RegisterOperand(object), UnsignedOperand(name_index),
+         UnsignedOperand(feedback_slot));
   return *this;
 }
 
@@ -367,21 +312,16 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::StoreKeyedProperty(
     Register object, Register key, int feedback_slot,
     LanguageMode language_mode) {
   Bytecode bytecode = BytecodeForStoreKeyedProperty(language_mode);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      object.SizeOfOperand(), key.SizeOfOperand(),
-      Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(bytecode, operand_scale, RegisterOperand(object),
-               RegisterOperand(key), UnsignedOperand(feedback_slot));
+  Output(bytecode, RegisterOperand(object), RegisterOperand(key),
+         UnsignedOperand(feedback_slot));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CreateClosure(
     Handle<SharedFunctionInfo> shared_info, PretenureFlag tenured) {
   size_t entry = GetConstantPoolEntry(shared_info);
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(Bytecodes::SizeForUnsignedOperand(entry));
-  OutputScaled(Bytecode::kCreateClosure, operand_scale, UnsignedOperand(entry),
-               UnsignedOperand(static_cast<size_t>(tenured)));
+  Output(Bytecode::kCreateClosure, UnsignedOperand(entry),
+         UnsignedOperand(static_cast<size_t>(tenured)));
   return *this;
 }
 
@@ -398,53 +338,36 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::CreateArguments(
 BytecodeArrayBuilder& BytecodeArrayBuilder::CreateRegExpLiteral(
     Handle<String> pattern, int literal_index, int flags) {
   size_t pattern_entry = GetConstantPoolEntry(pattern);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(pattern_entry),
-      Bytecodes::SizeForUnsignedOperand(literal_index),
-      Bytecodes::SizeForUnsignedOperand(flags));
-  OutputScaled(Bytecode::kCreateRegExpLiteral, operand_scale,
-               UnsignedOperand(pattern_entry), UnsignedOperand(literal_index),
-               UnsignedOperand(flags));
+  Output(Bytecode::kCreateRegExpLiteral, UnsignedOperand(pattern_entry),
+         UnsignedOperand(literal_index), UnsignedOperand(flags));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CreateArrayLiteral(
     Handle<FixedArray> constant_elements, int literal_index, int flags) {
   size_t constant_elements_entry = GetConstantPoolEntry(constant_elements);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(constant_elements_entry),
-      Bytecodes::SizeForUnsignedOperand(literal_index),
-      Bytecodes::SizeForUnsignedOperand(flags));
-  OutputScaled(Bytecode::kCreateArrayLiteral, operand_scale,
-               UnsignedOperand(constant_elements_entry),
-               UnsignedOperand(literal_index), UnsignedOperand(flags));
+  Output(Bytecode::kCreateArrayLiteral,
+         UnsignedOperand(constant_elements_entry),
+         UnsignedOperand(literal_index), UnsignedOperand(flags));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CreateObjectLiteral(
     Handle<FixedArray> constant_properties, int literal_index, int flags) {
   size_t constant_properties_entry = GetConstantPoolEntry(constant_properties);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(constant_properties_entry),
-      Bytecodes::SizeForUnsignedOperand(literal_index),
-      Bytecodes::SizeForUnsignedOperand(flags));
-  OutputScaled(Bytecode::kCreateObjectLiteral, operand_scale,
-               UnsignedOperand(constant_properties_entry),
-               UnsignedOperand(literal_index), UnsignedOperand(flags));
+  Output(Bytecode::kCreateObjectLiteral,
+         UnsignedOperand(constant_properties_entry),
+         UnsignedOperand(literal_index), UnsignedOperand(flags));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::PushContext(Register context) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(context.SizeOfOperand());
-  OutputScaled(Bytecode::kPushContext, operand_scale, RegisterOperand(context));
+  Output(Bytecode::kPushContext, RegisterOperand(context));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::PopContext(Register context) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(context.SizeOfOperand());
-  OutputScaled(Bytecode::kPopContext, operand_scale, RegisterOperand(context));
+  Output(Bytecode::kPopContext, RegisterOperand(context));
   return *this;
 }
 
@@ -478,7 +401,7 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::Bind(const BytecodeLabel& target,
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::OutputJump(Bytecode jump_bytecode,
                                                        BytecodeLabel* label) {
-  BytecodeNode node(jump_bytecode, 0, OperandScale::kSingle);
+  BytecodeNode node(jump_bytecode, 0);
   AttachSourceInfo(&node);
   pipeline_->WriteJump(&node, label);
   LeaveBasicBlock();
@@ -548,57 +471,40 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::Debugger() {
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInPrepare(
     Register cache_info_triple) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(cache_info_triple.SizeOfOperand());
-  OutputScaled(Bytecode::kForInPrepare, operand_scale,
-               RegisterOperand(cache_info_triple));
+  Output(Bytecode::kForInPrepare, RegisterOperand(cache_info_triple));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInDone(Register index,
                                                       Register cache_length) {
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      index.SizeOfOperand(), cache_length.SizeOfOperand());
-  OutputScaled(Bytecode::kForInDone, operand_scale, RegisterOperand(index),
-               RegisterOperand(cache_length));
+  Output(Bytecode::kForInDone, RegisterOperand(index),
+         RegisterOperand(cache_length));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInNext(
     Register receiver, Register index, Register cache_type_array_pair,
     int feedback_slot) {
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      receiver.SizeOfOperand(), index.SizeOfOperand(),
-      cache_type_array_pair.SizeOfOperand(),
-      Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(Bytecode::kForInNext, operand_scale, RegisterOperand(receiver),
-               RegisterOperand(index), RegisterOperand(cache_type_array_pair),
-               UnsignedOperand(feedback_slot));
+  Output(Bytecode::kForInNext, RegisterOperand(receiver),
+         RegisterOperand(index), RegisterOperand(cache_type_array_pair),
+         UnsignedOperand(feedback_slot));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ForInStep(Register index) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(index.SizeOfOperand());
-  OutputScaled(Bytecode::kForInStep, operand_scale, RegisterOperand(index));
+  Output(Bytecode::kForInStep, RegisterOperand(index));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::SuspendGenerator(
     Register generator) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(generator.SizeOfOperand());
-  OutputScaled(Bytecode::kSuspendGenerator, operand_scale,
-               RegisterOperand(generator));
+  Output(Bytecode::kSuspendGenerator, RegisterOperand(generator));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::ResumeGenerator(
     Register generator) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(generator.SizeOfOperand());
-  OutputScaled(Bytecode::kResumeGenerator, operand_scale,
-               RegisterOperand(generator));
+  Output(Bytecode::kResumeGenerator, RegisterOperand(generator));
   return *this;
 }
 
@@ -642,14 +548,8 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::Call(Register callable,
                                                  int feedback_slot,
                                                  TailCallMode tail_call_mode) {
   Bytecode bytecode = BytecodeForCall(tail_call_mode);
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      callable.SizeOfOperand(), receiver_args.SizeOfOperand(),
-      Bytecodes::SizeForUnsignedOperand(receiver_args_count),
-      Bytecodes::SizeForUnsignedOperand(feedback_slot));
-  OutputScaled(bytecode, operand_scale, RegisterOperand(callable),
-               RegisterOperand(receiver_args),
-               UnsignedOperand(receiver_args_count),
-               UnsignedOperand(feedback_slot));
+  Output(bytecode, RegisterOperand(callable), RegisterOperand(receiver_args),
+         UnsignedOperand(receiver_args_count), UnsignedOperand(feedback_slot));
   return *this;
 }
 
@@ -660,11 +560,8 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::New(Register constructor,
     DCHECK_EQ(0u, arg_count);
     first_arg = Register(0);
   }
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      constructor.SizeOfOperand(), first_arg.SizeOfOperand(),
-      Bytecodes::SizeForUnsignedOperand(arg_count));
-  OutputScaled(Bytecode::kNew, operand_scale, RegisterOperand(constructor),
-               RegisterOperand(first_arg), UnsignedOperand(arg_count));
+  Output(Bytecode::kNew, RegisterOperand(constructor),
+         RegisterOperand(first_arg), UnsignedOperand(arg_count));
   return *this;
 }
 
@@ -679,10 +576,8 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::CallRuntime(
   Bytecode bytecode = IntrinsicsHelper::IsSupported(function_id)
                           ? Bytecode::kInvokeIntrinsic
                           : Bytecode::kCallRuntime;
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      first_arg.SizeOfOperand(), Bytecodes::SizeForUnsignedOperand(arg_count));
-  OutputScaled(bytecode, operand_scale, static_cast<uint16_t>(function_id),
-               RegisterOperand(first_arg), UnsignedOperand(arg_count));
+  Output(bytecode, static_cast<uint16_t>(function_id),
+         RegisterOperand(first_arg), UnsignedOperand(arg_count));
   return *this;
 }
 
@@ -695,33 +590,22 @@ BytecodeArrayBuilder& BytecodeArrayBuilder::CallRuntimeForPair(
     DCHECK_EQ(0u, arg_count);
     first_arg = Register(0);
   }
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      first_arg.SizeOfOperand(), Bytecodes::SizeForUnsignedOperand(arg_count),
-      first_return.SizeOfOperand());
-  OutputScaled(Bytecode::kCallRuntimeForPair, operand_scale,
-               static_cast<uint16_t>(function_id), RegisterOperand(first_arg),
-               UnsignedOperand(arg_count), RegisterOperand(first_return));
+  Output(Bytecode::kCallRuntimeForPair, static_cast<uint16_t>(function_id),
+         RegisterOperand(first_arg), UnsignedOperand(arg_count),
+         RegisterOperand(first_return));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::CallJSRuntime(
     int context_index, Register receiver_args, size_t receiver_args_count) {
-  OperandScale operand_scale = Bytecodes::OperandSizesToScale(
-      Bytecodes::SizeForUnsignedOperand(context_index),
-      receiver_args.SizeOfOperand(),
-      Bytecodes::SizeForUnsignedOperand(receiver_args_count));
-  OutputScaled(Bytecode::kCallJSRuntime, operand_scale,
-               UnsignedOperand(context_index), RegisterOperand(receiver_args),
-               UnsignedOperand(receiver_args_count));
+  Output(Bytecode::kCallJSRuntime, UnsignedOperand(context_index),
+         RegisterOperand(receiver_args), UnsignedOperand(receiver_args_count));
   return *this;
 }
 
 BytecodeArrayBuilder& BytecodeArrayBuilder::Delete(Register object,
                                                    LanguageMode language_mode) {
-  OperandScale operand_scale =
-      Bytecodes::OperandSizesToScale(object.SizeOfOperand());
-  OutputScaled(BytecodeForDelete(language_mode), operand_scale,
-               RegisterOperand(object));
+  Output(BytecodeForDelete(language_mode), RegisterOperand(object));
   return *this;
 }
 
@@ -762,75 +646,11 @@ bool BytecodeArrayBuilder::TemporaryRegisterIsLive(Register reg) const {
   return temporary_register_allocator()->RegisterIsLive(reg);
 }
 
-bool BytecodeArrayBuilder::OperandIsValid(Bytecode bytecode,
-                                          OperandScale operand_scale,
-                                          int operand_index,
-                                          uint32_t operand_value) const {
-  OperandSize operand_size =
-      Bytecodes::GetOperandSize(bytecode, operand_index, operand_scale);
-  OperandType operand_type = Bytecodes::GetOperandType(bytecode, operand_index);
-  switch (operand_type) {
-    case OperandType::kNone:
-      return false;
-    case OperandType::kRegCount: {
-      if (operand_index > 0) {
-        OperandType previous_operand_type =
-            Bytecodes::GetOperandType(bytecode, operand_index - 1);
-        if (previous_operand_type != OperandType::kMaybeReg &&
-            previous_operand_type != OperandType::kReg) {
-          return false;
-        }
-      }
-    }  // Fall-through
-    case OperandType::kFlag8:
-    case OperandType::kIdx:
-    case OperandType::kRuntimeId:
-    case OperandType::kImm: {
-      size_t unsigned_value = static_cast<size_t>(operand_value);
-      return Bytecodes::SizeForUnsignedOperand(unsigned_value) <= operand_size;
-    }
-    case OperandType::kMaybeReg:
-      if (RegisterFromOperand(operand_value) == Register(0)) {
-        return true;
-      }
-    // Fall-through to kReg case.
-    case OperandType::kReg:
-    case OperandType::kRegOut: {
-      Register reg = RegisterFromOperand(operand_value);
-      return RegisterIsValid(reg, operand_size);
-    }
-    case OperandType::kRegOutPair:
-    case OperandType::kRegPair: {
-      Register reg0 = RegisterFromOperand(operand_value);
-      Register reg1 = Register(reg0.index() + 1);
-      // The size of reg1 is immaterial.
-      return RegisterIsValid(reg0, operand_size) &&
-             RegisterIsValid(reg1, OperandSize::kQuad);
-    }
-    case OperandType::kRegOutTriple: {
-      Register reg0 = RegisterFromOperand(operand_value);
-      Register reg1 = Register(reg0.index() + 1);
-      Register reg2 = Register(reg0.index() + 2);
-      // The size of reg1 and reg2 is immaterial.
-      return RegisterIsValid(reg0, operand_size) &&
-             RegisterIsValid(reg1, OperandSize::kQuad) &&
-             RegisterIsValid(reg2, OperandSize::kQuad);
-    }
-  }
-  UNREACHABLE();
-  return false;
-}
-
-bool BytecodeArrayBuilder::RegisterIsValid(Register reg,
-                                           OperandSize reg_size) const {
+bool BytecodeArrayBuilder::RegisterIsValid(Register reg) const {
   if (!reg.is_valid()) {
     return false;
   }
 
-  if (reg.SizeOfOperand() > reg_size) {
-    return false;
-  }
-
   if (reg.is_current_context() || reg.is_function_closure() ||
       reg.is_new_target()) {
     return true;
@@ -844,6 +664,89 @@ bool BytecodeArrayBuilder::RegisterIsValid(Register reg,
   }
 }
 
+bool BytecodeArrayBuilder::OperandsAreValid(
+    Bytecode bytecode, int operand_count, uint32_t operand0, uint32_t operand1,
+    uint32_t operand2, uint32_t operand3) const {
+  if (Bytecodes::NumberOfOperands(bytecode) != operand_count) {
+    return false;
+  }
+
+  uint32_t operands[] = {operand0, operand1, operand2, operand3};
+  const OperandType* operand_types = Bytecodes::GetOperandTypes(bytecode);
+  for (int i = 0; i < operand_count; ++i) {
+    switch (operand_types[i]) {
+      case OperandType::kNone:
+        return false;
+      case OperandType::kRegCount: {
+        CHECK_NE(i, 0);
+        CHECK(operand_types[i - 1] == OperandType::kMaybeReg ||
+              operand_types[i - 1] == OperandType::kReg);
+        if (operands[i] > 0) {
+          Register start = Register::FromOperand(operands[i - 1]);
+          Register end(start.index() + static_cast<int>(operands[i]) - 1);
+          if (!RegisterIsValid(start) || !RegisterIsValid(end) || start > end) {
+            return false;
+          }
+        }
+        break;
+      }
+      case OperandType::kFlag8:
+        if (Bytecodes::SizeForUnsignedOperand(operands[i]) >
+            OperandSize::kByte) {
+          return false;
+        }
+        break;
+      case OperandType::kRuntimeId:
+        if (Bytecodes::SizeForUnsignedOperand(operands[i]) >
+            OperandSize::kShort) {
+          return false;
+        }
+        break;
+      case OperandType::kIdx:
+        // TODO(oth): Consider splitting OperandType::kIdx into two
+        // operand types. One which is a constant pool index that can
+        // be checked, and the other is an unsigned value.
+        break;
+      case OperandType::kImm:
+        break;
+      case OperandType::kMaybeReg:
+        if (Register::FromOperand(operands[i]) == Register(0)) {
+          break;
+        }
+      // Fall-through to kReg case.
+      case OperandType::kReg:
+      case OperandType::kRegOut: {
+        Register reg = Register::FromOperand(operands[i]);
+        if (!RegisterIsValid(reg)) {
+          return false;
+        }
+        break;
+      }
+      case OperandType::kRegOutPair:
+      case OperandType::kRegPair: {
+        Register reg0 = Register::FromOperand(operands[i]);
+        Register reg1 = Register(reg0.index() + 1);
+        if (!RegisterIsValid(reg0) || !RegisterIsValid(reg1)) {
+          return false;
+        }
+        break;
+      }
+      case OperandType::kRegOutTriple: {
+        Register reg0 = Register::FromOperand(operands[i]);
+        Register reg1 = Register(reg0.index() + 1);
+        Register reg2 = Register(reg0.index() + 2);
+        if (!RegisterIsValid(reg0) || !RegisterIsValid(reg1) ||
+            !RegisterIsValid(reg2)) {
+          return false;
+        }
+        break;
+      }
+    }
+  }
+
+  return true;
+}
+
 // static
 Bytecode BytecodeArrayBuilder::BytecodeForBinaryOperation(Token::Value op) {
   switch (op) {
@@ -1018,38 +921,6 @@ Bytecode BytecodeArrayBuilder::BytecodeForCall(TailCallMode tail_call_mode) {
   return Bytecode::kIllegal;
 }
 
-uint32_t BytecodeArrayBuilder::RegisterOperand(Register reg) {
-  return static_cast<uint32_t>(reg.ToOperand());
-}
-
-Register BytecodeArrayBuilder::RegisterFromOperand(uint32_t operand) {
-  return Register::FromOperand(static_cast<int32_t>(operand));
-}
-
-uint32_t BytecodeArrayBuilder::SignedOperand(int value, OperandSize size) {
-  switch (size) {
-    case OperandSize::kByte:
-      return static_cast<uint8_t>(value & 0xff);
-    case OperandSize::kShort:
-      return static_cast<uint16_t>(value & 0xffff);
-    case OperandSize::kQuad:
-      return static_cast<uint32_t>(value);
-    case OperandSize::kNone:
-      UNREACHABLE();
-  }
-  return 0;
-}
-
-uint32_t BytecodeArrayBuilder::UnsignedOperand(int value) {
-  DCHECK_GE(value, 0);
-  return static_cast<uint32_t>(value);
-}
-
-uint32_t BytecodeArrayBuilder::UnsignedOperand(size_t value) {
-  DCHECK_LE(value, kMaxUInt32);
-  return static_cast<uint32_t>(value);
-}
-
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8