[compiler] Remove support for concurrent OSR.

src/compiler.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_COMPILER_H_
 #define V8_COMPILER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/bailout-reason.h"
@@ skipping 485 matching lines @@
 
 // A helper class that calls the three compilation phases in
 // Crankshaft and keeps track of its state.  The three phases
 // CreateGraph, OptimizeGraph and GenerateAndInstallCode can either
 // fail, bail-out to the full code generator or succeed.  Apart from
 // their return value, the status of the phase last run can be checked
 // using last_status().
 class OptimizedCompileJob: public ZoneObject {
  public:
   explicit OptimizedCompileJob(CompilationInfo* info)
-      : info_(info),
-        graph_(NULL),
-        chunk_(NULL),
-        last_status_(FAILED),
-        awaiting_install_(false) { }
+      : info_(info), graph_(NULL), chunk_(NULL), last_status_(FAILED) {}
 
   enum Status {
     FAILED, BAILED_OUT, SUCCEEDED
   };
 
   MUST_USE_RESULT Status CreateGraph();
   MUST_USE_RESULT Status OptimizeGraph();
   MUST_USE_RESULT Status GenerateCode();
 
   Status last_status() const { return last_status_; }
   CompilationInfo* info() const { return info_; }
   Isolate* isolate() const { return info()->isolate(); }
 
   Status RetryOptimization(BailoutReason reason) {
     info_->RetryOptimization(reason);
     return SetLastStatus(BAILED_OUT);
   }
 
   Status AbortOptimization(BailoutReason reason) {
     info_->AbortOptimization(reason);
     return SetLastStatus(BAILED_OUT);
   }
 
-  void WaitForInstall() {
-    DCHECK(info_->is_osr());
-    awaiting_install_ = true;
-  }
-
-  bool IsWaitingForInstall() { return awaiting_install_; }
-
  private:
   CompilationInfo* info_;
   HGraph* graph_;
   LChunk* chunk_;
   base::TimeDelta time_taken_to_create_graph_;
   base::TimeDelta time_taken_to_optimize_;
   base::TimeDelta time_taken_to_codegen_;
   Status last_status_;
-  bool awaiting_install_;
 
   MUST_USE_RESULT Status SetLastStatus(Status status) {
     last_status_ = status;
     return last_status_;
   }
   void RecordOptimizationStats();
 
   struct Timer {
     Timer(OptimizedCompileJob* job, base::TimeDelta* location)
         : job_(job), location_(location) {
@@ skipping 87 matching lines @@
   // The following family of methods provides support for OSR. Code generated
   // for entry via OSR might not be suitable for normal entry, hence will be
   // returned directly to the caller.
   //
   // Please note this interface is the only part dealing with {Code} objects
   // directly. Other methods are agnostic to {Code} and can use an interpreter
   // instead of generating JIT code for a function at all.
 
   // Generate and return optimized code for OSR, or empty handle on failure.
   MUST_USE_RESULT static MaybeHandle<Code> GetOptimizedCodeForOSR(
-      Handle<JSFunction> function, ConcurrencyMode mode, BailoutId osr_ast_id,
+      Handle<JSFunction> function, BailoutId osr_ast_id,
       JavaScriptFrame* osr_frame);
 
   // Generate and return code from previously queued optimization job.
   // On failure, return the empty handle.
   MUST_USE_RESULT static MaybeHandle<Code> GetConcurrentlyOptimizedCode(
       OptimizedCompileJob* job);
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_H_