| Index: src/interpreter/bytecode-generator.cc | 
| diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc | 
| index d4f5129d4435839c8e2dc32c2325ef724f25634f..78a3c694b7a1e6b38f121a8518d09e243a93d9f1 100644 | 
| --- a/src/interpreter/bytecode-generator.cc | 
| +++ b/src/interpreter/bytecode-generator.cc | 
| @@ -2238,7 +2238,10 @@ void BytecodeGenerator::VisitAssignment(Assignment* expr) { | 
| } | 
| } | 
| VisitForAccumulatorValue(expr->value()); | 
| -    builder()->BinaryOperation(expr->binary_op(), old_value); | 
| +    FeedbackVectorSlot slot = | 
| +        expr->binary_operation()->BinaryOperationFeedbackSlot(); | 
| +    builder()->BinaryOperation(expr->binary_op(), old_value, | 
| +                               feedback_index(slot)); | 
| } else { | 
| VisitForAccumulatorValue(expr->value()); | 
| } | 
| @@ -2880,7 +2883,8 @@ void BytecodeGenerator::VisitCountOperation(CountOperation* expr) { | 
| } | 
|  | 
| // Perform +1/-1 operation. | 
| -  builder()->CountOperation(expr->binary_op()); | 
| +  FeedbackVectorSlot slot = expr->CountBinaryOpFeedbackSlot(); | 
| +  builder()->CountOperation(expr->binary_op(), feedback_index(slot)); | 
|  | 
| // Store the value. | 
| builder()->SetExpressionPosition(expr); | 
| @@ -2951,7 +2955,8 @@ void BytecodeGenerator::VisitArithmeticExpression(BinaryOperation* expr) { | 
| // +x and -x by the parser. | 
| Register lhs = VisitForRegisterValue(expr->left()); | 
| VisitForAccumulatorValue(expr->right()); | 
| -  builder()->BinaryOperation(expr->op(), lhs); | 
| +  FeedbackVectorSlot slot = expr->BinaryOperationFeedbackSlot(); | 
| +  builder()->BinaryOperation(expr->op(), lhs, feedback_index(slot)); | 
| execution_result()->SetResultInAccumulator(); | 
| } | 
|  | 
|  |