Add debug step check before break and continue

runtime/vm/flow_graph_builder.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/flow_graph_builder.h"
 
 #include "lib/invocation_mirror.h"
 #include "vm/ast_printer.h"
 #include "vm/bit_vector.h"
 #include "vm/compiler.h"
@@ skipping 2086 matching lines @@
       exit_ = for_test.CreateFalseSuccessor();
     } else {
       for_test.IfFalseGoto(nested_loop.break_target());
       exit_ = nested_loop.break_target();
     }
   }
 }
 
 
 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++) {
     EffectGraphVisitor for_effect(owner());
     node->InlinedFinallyNodeAt(i)->Visit(&for_effect);
     Append(for_effect);
     if (!is_open()) return;
   }
 
   // Unchain the context(s) up to the outer context level of the scope which
@@ skipping 2216 matching lines @@
       graph_entry_->PruneUnreachable(graph_entry_, NULL, osr_id_, block_marks);
   ASSERT(found);
 }
 
 
 void FlowGraphBuilder::Bailout(const char* reason) const {
   parsed_function_.Bailout("FlowGraphBuilder", reason);
 }
 
 }  // namespace dart