Save/restore only live registers in the generator suspend/resume.

src/interpreter/bytecode-decoder.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/bytecode-decoder.h"
 
 #include <iomanip>
 
 #include "src/interpreter/interpreter-intrinsics.h"
 #include "src/objects-inl.h"
@@ skipping 156 matching lines @@
         break;
       }
       case interpreter::OperandType::kRegOutPair:
       case interpreter::OperandType::kRegPair: {
         RegisterList reg_list =
             DecodeRegisterListOperand(operand_start, 2, op_type, operand_scale);
         os << reg_list.first_register().ToString(parameter_count) << "-"
            << reg_list.last_register().ToString(parameter_count);
         break;
       }
+      case interpreter::OperandType::kRegOutList:
       case interpreter::OperandType::kRegList: {
         DCHECK_LT(i, number_of_operands - 1);
         DCHECK_EQ(Bytecodes::GetOperandType(bytecode, i + 1),
                   OperandType::kRegCount);
         int reg_count_offset =
             Bytecodes::GetOperandOffset(bytecode, i + 1, operand_scale);
         const uint8_t* reg_count_operand =
             &bytecode_start[prefix_offset + reg_count_offset];
         uint32_t count = DecodeUnsignedOperand(
             reg_count_operand, OperandType::kRegCount, operand_scale);
@@ skipping 12 matching lines @@
     if (i != number_of_operands - 1) {
       os << ", ";
     }
   }
   return os;
 }
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8