A64: Synchronize with r15545.

src/hydrogen-bce.h

Index: src/hydrogen-bce.h
diff --git a/src/marking-thread.h b/src/hydrogen-bce.h
similarity index 65%
copy from src/marking-thread.h
copy to src/hydrogen-bce.h
index 9efa3af13262165972abf179defac6f83fed4ac9..d91997bda011775d92a66eb9c2c9acbf581d4491 100644
--- a/src/marking-thread.h
+++ b/src/hydrogen-bce.h
@@ -25,47 +25,48 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // 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_BCE_H_
+#define V8_HYDROGEN_BCE_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 BoundsCheckBbData;
+class BoundsCheckKey;
+class BoundsCheckTable : private ZoneHashMap {
  public:
-  explicit MarkingThread(Isolate* isolate);
+  explicit BoundsCheckTable(Zone* zone);
+
+  INLINE(BoundsCheckBbData** LookupOrInsert(BoundsCheckKey* key, Zone* zone));
+  INLINE(void Insert(BoundsCheckKey* key, BoundsCheckBbData* data, Zone* zone));
+  INLINE(void Delete(BoundsCheckKey* key));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BoundsCheckTable);
+};
+
 
-  void Run();
-  void Stop();
-  void StartMarking();
-  void WaitForMarkingThread();
+class HBoundsCheckEliminationPhase : public HPhase {
+ public:
+  explicit HBoundsCheckEliminationPhase(HGraph* graph)
+      : HPhase("H_Bounds checks elimination", graph), table_(zone()) { }
 
-  ~MarkingThread() {
-    delete start_marking_semaphore_;
-    delete end_marking_semaphore_;
-    delete stop_semaphore_;
+  void Run() {
+    EliminateRedundantBoundsChecks(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 EliminateRedundantBoundsChecks(HBasicBlock* bb);
+
+  BoundsCheckTable table_;
+
+  DISALLOW_COPY_AND_ASSIGN(HBoundsCheckEliminationPhase);
 };
 
+
 } }  // namespace v8::internal
 
-#endif  // V8_MARKING_THREAD_H_
+#endif  // V8_HYDROGEN_BCE_H_