Disposing an OSR job should only restore the back edge state.

src/compiler.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 516 matching lines @@
   CompilationInfo* info() const { return info_; }
   Isolate* isolate() const { return info()->isolate(); }
 
   MUST_USE_RESULT Status AbortOptimization() {
     info_->AbortOptimization();
     info_->shared_info()->DisableOptimization(info_->bailout_reason());
     return SetLastStatus(BAILED_OUT);
   }
 
   void WaitForInstall() {
-    ASSERT(!info_->osr_ast_id().IsNone());
+    ASSERT(info_->is_osr());
     awaiting_install_ = true;
   }
 
   bool IsWaitingForInstall() { return awaiting_install_; }
 
  private:
   CompilationInfo* info_;
   HOptimizedGraphBuilder* graph_builder_;
   HGraph* graph_;
   LChunk* chunk_;
@@ skipping 117 matching lines @@
   unsigned info_zone_start_allocation_size_;
   ElapsedTimer timer_;
 
   DISALLOW_COPY_AND_ASSIGN(CompilationPhase);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_COMPILER_H_