A64: Synchronize with r15545.

src/hydrogen-range-analysis.h

 // Copyright 2013 the V8 project authors. All rights reserved.
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 // 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
 //       with the distribution.
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 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
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 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-#ifndef V8_MARKING_THREAD_H_
-#define V8_MARKING_THREAD_H_
+#ifndef V8_HYDROGEN_RANGE_ANALYSIS_H_
+#define V8_HYDROGEN_RANGE_ANALYSIS_H_
 
-#include "atomicops.h"
-#include "flags.h"
-#include "platform.h"
-#include "v8utils.h"
-
-#include "spaces.h"
-
-#include "heap.h"
+#include "hydrogen.h"
 
 namespace v8 {
 namespace internal {
 
-class MarkingThread : public Thread {
+
+class HRangeAnalysisPhase : public HPhase {
  public:
-  explicit MarkingThread(Isolate* isolate);
+  explicit HRangeAnalysisPhase(HGraph* graph)
+      : HPhase("H_Range analysis", graph), changed_ranges_(16, zone()) { }
 
-  void Run();
-  void Stop();
-  void StartMarking();
-  void WaitForMarkingThread();
-
-  ~MarkingThread() {
-    delete start_marking_semaphore_;
-    delete end_marking_semaphore_;
-    delete stop_semaphore_;
+  void Run() {
+    Analyze(graph()->entry_block());
   }
 
  private:
-  Isolate* isolate_;
-  Heap* heap_;
-  Semaphore* start_marking_semaphore_;
-  Semaphore* end_marking_semaphore_;
-  Semaphore* stop_semaphore_;
-  volatile AtomicWord stop_thread_;
-  int id_;
-  static Atomic32 id_counter_;
+  void TraceRange(const char* msg, ...);
+  void Analyze(HBasicBlock* block);
+  void InferControlFlowRange(HCompareNumericAndBranch* test,
+                             HBasicBlock* dest);
+  void UpdateControlFlowRange(Token::Value op, HValue* value, HValue* other);
+  void InferRange(HValue* value);
+  void RollBackTo(int index);
+  void AddRange(HValue* value, Range* range);
+
+  ZoneList<HValue*> changed_ranges_;
 };
 
+
 } }  // namespace v8::internal
 
-#endif  // V8_MARKING_THREAD_H_
+#endif  // V8_HYDROGEN_RANGE_ANALYSIS_H_