Add debug step check before break and continue

runtime/vm/flow_graph_builder.cc

Index: runtime/vm/flow_graph_builder.cc
diff --git a/runtime/vm/flow_graph_builder.cc b/runtime/vm/flow_graph_builder.cc
index bf135624fb07337f4a2ea3895866d0e4c4fa2d95..f8f9d7eb7691f9801cee076b38b8edf704aa478d 100644
--- a/runtime/vm/flow_graph_builder.cc
+++ b/runtime/vm/flow_graph_builder.cc
@@ -2104,6 +2104,11 @@ void EffectGraphVisitor::VisitForNode(ForNode* node) {
 
 
 void EffectGraphVisitor::VisitJumpNode(JumpNode* node) {
+  if (FLAG_support_debugger && owner()->function().is_debuggable()) {
+    AddInstruction(new (Z) DebugStepCheckInstr(node->token_pos(),
+                                               RawPcDescriptors::kRuntimeCall));
+  }
+
   NestedContextAdjustment context_adjustment(owner(), owner()->context_level());
 
   for (intptr_t i = 0; i < node->inlined_finally_list_length(); i++) {