[Interpreter] Preparation for wide registers.

src/compiler/interpreter-assembler.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/compiler/interpreter-assembler.h"
 
 #include <ostream>
 
 #include "src/code-factory.h"
 #include "src/compiler/graph.h"
@@ skipping 241 matching lines @@
     load = raw_assembler_->ChangeInt32ToInt64(load);
   }
   return load;
 }
 
 
 Node* InterpreterAssembler::BytecodeOperandCount(int operand_index) {
   switch (interpreter::Bytecodes::GetOperandSize(bytecode_, operand_index)) {
     case interpreter::OperandSize::kByte:
       DCHECK_EQ(
-          interpreter::OperandType::kCount8,
+          interpreter::OperandType::kRegCount8,
           interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
       return BytecodeOperand(operand_index);
     case interpreter::OperandSize::kShort:
       DCHECK_EQ(
-          interpreter::OperandType::kCount16,
+          interpreter::OperandType::kRegCount16,
           interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
       return BytecodeOperandShort(operand_index);
-    default:
+    case interpreter::OperandSize::kNone:
       UNREACHABLE();
-      return nullptr;
   }
+  return nullptr;
 }
 
 
 Node* InterpreterAssembler::BytecodeOperandImm(int operand_index) {
   DCHECK_EQ(interpreter::OperandType::kImm8,
             interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
   return BytecodeOperandSignExtended(operand_index);
 }
 
 
 Node* InterpreterAssembler::BytecodeOperandIdx(int operand_index) {
   switch (interpreter::Bytecodes::GetOperandSize(bytecode_, operand_index)) {
     case interpreter::OperandSize::kByte:
       DCHECK_EQ(
           interpreter::OperandType::kIdx8,
           interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
       return BytecodeOperand(operand_index);
     case interpreter::OperandSize::kShort:
       DCHECK_EQ(
           interpreter::OperandType::kIdx16,
           interpreter::Bytecodes::GetOperandType(bytecode_, operand_index));
       return BytecodeOperandShort(operand_index);
-    default:
+    case interpreter::OperandSize::kNone:
       UNREACHABLE();
-      return nullptr;
   }
+  return nullptr;
 }
 
 
 Node* InterpreterAssembler::BytecodeOperandReg(int operand_index) {
   switch (interpreter::Bytecodes::GetOperandType(bytecode_, operand_index)) {
+    case interpreter::OperandType::kMaybeReg8:
     case interpreter::OperandType::kReg8:
     case interpreter::OperandType::kRegPair8:
     case interpreter::OperandType::kRegTriple8:
-    case interpreter::OperandType::kMaybeReg8:
       DCHECK_EQ(
           interpreter::OperandSize::kByte,
           interpreter::Bytecodes::GetOperandSize(bytecode_, operand_index));
       return BytecodeOperandSignExtended(operand_index);
+    case interpreter::OperandType::kMaybeReg16:
     case interpreter::OperandType::kReg16:
+    case interpreter::OperandType::kRegPair16:
+    case interpreter::OperandType::kRegTriple16:
       DCHECK_EQ(
           interpreter::OperandSize::kShort,
           interpreter::Bytecodes::GetOperandSize(bytecode_, operand_index));
       return BytecodeOperandShortSignExtended(operand_index);
-    default:
+    case interpreter::OperandType::kNone:
+    case interpreter::OperandType::kIdx8:
+    case interpreter::OperandType::kIdx16:
+    case interpreter::OperandType::kImm8:
+    case interpreter::OperandType::kRegCount8:
+    case interpreter::OperandType::kRegCount16:
       UNREACHABLE();
-      return nullptr;
   }
+  return nullptr;
 }
 
 
 Node* InterpreterAssembler::Int32Constant(int value) {
   return raw_assembler_->Int32Constant(value);
 }
 
 
 Node* InterpreterAssembler::IntPtrConstant(intptr_t value) {
   return raw_assembler_->IntPtrConstant(value);
@@ skipping 411 matching lines @@
   return raw_assembler_->call_descriptor();
 }
 
 
 Zone* InterpreterAssembler::zone() { return raw_assembler_->zone(); }
 
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8