[interpreter] Fix destroyed new.target register use.

src/interpreter/bytecode-generator.cc

Index: src/interpreter/bytecode-generator.cc
diff --git a/src/interpreter/bytecode-generator.cc b/src/interpreter/bytecode-generator.cc
index 89d349ff7238d21859f422e7661bd4de85e6ca34..e1e87546a9c23cf3ad8d798b07e95590f6f2e041 100644
--- a/src/interpreter/bytecode-generator.cc
+++ b/src/interpreter/bytecode-generator.cc
@@ -3280,6 +3280,13 @@ void BytecodeGenerator::VisitNewTargetVariable(Variable* variable) {
   // Store the new target we were called with in the given variable.
   builder()->LoadAccumulatorWithRegister(Register::new_target());
   VisitVariableAssignment(variable, Token::INIT, FeedbackVectorSlot::Invalid());
+
+  // TODO(mstarzinger): The <new.target> register is not set by the deoptimizer
+  // and we need to make sure {BytecodeRegisterOptimizer} flushes its state
+  // before a local variable containing the <new.target> is used. Using a label
+  // as below flushes the entire pipeline, we should be more specific here.
+  BytecodeLabel flush_state_label;
+  builder()->Bind(&flush_state_label);
 }
 
 void BytecodeGenerator::VisitFunctionClosureForContext() {