[interpreter, debugger] implement debugger statement.

src/compiler/bytecode-graph-builder.cc

Index: src/compiler/bytecode-graph-builder.cc
diff --git a/src/compiler/bytecode-graph-builder.cc b/src/compiler/bytecode-graph-builder.cc
index 83ff7b7b27099358aa37c6977e95388c439c7eff..1893b66ad8f7918836aafdc4eb4f8f5b42c008be 100644
--- a/src/compiler/bytecode-graph-builder.cc
+++ b/src/compiler/bytecode-graph-builder.cc
@@ -1518,6 +1518,13 @@ void BytecodeGraphBuilder::VisitReturn() {
   MergeControlToLeaveFunction(control);
 }
 
+void BytecodeGraphBuilder::VisitDebugger() {
+  FrameStateBeforeAndAfter states(this);
+  Node* call =
+      NewNode(javascript()->CallRuntime(Runtime::kHandleDebuggerStatement));
+  environment()->BindAccumulator(call, &states);
+}
+
 void BytecodeGraphBuilder::BuildForInPrepare() {
   FrameStateBeforeAndAfter states(this);
   Node* receiver = environment()->LookupAccumulator();