Embed trigonometric lookup table.

src/trig-table.h

Index: src/trig-table.h
diff --git a/src/hydrogen-dce.h b/src/trig-table.h
similarity index 75%
copy from src/hydrogen-dce.h
copy to src/trig-table.h
index 2d73b380e40831147e5b5e586f0c805d9c45f877..bd48ff7afd1d56c3c8880b3389d917996256aa8c 100644
--- a/src/hydrogen-dce.h
+++ b/src/trig-table.h
@@ -25,33 +25,34 @@
 // (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_HYDROGEN_DCE_H_
-#define V8_HYDROGEN_DCE_H_
+#ifndef V8_TRIG_TABLE_H_
+#define V8_TRIG_TABLE_H_
 
-#include "hydrogen.h"
 
 namespace v8 {
 namespace internal {
 
-
-class HDeadCodeEliminationPhase : public HPhase {
+class TrigonometricLookupTable {
  public:

[Sven Panne, 2013/11/21 12:25:45]

Let's make all the members private and expose only those that we really need via
getters. That's more consistent and a bit clearer.

-  explicit HDeadCodeEliminationPhase(HGraph* graph)
-      : HPhase("H_Dead code elimination", graph) { }
+  static const double kSinTable[];
+  static const double kCosXIntervalTable[];
+  static const int kSamples;
+  static const int kTableSize;
+  static const double kSamplesOverPiHalf;
+
+  static int table_num_bytes() {
+    return kTableSize * sizeof(*kSinTable);
+  }
 
-  void Run() {
-    MarkLiveInstructions();
-    RemoveDeadInstructions();
+  static void* sin_table() {

[Sven Panne, 2013/11/21 12:25:45]

Add a small comment why we have to cast away const-ness.

+    return const_cast<double*>(&kSinTable[0]);
   }
 
- private:
-  void MarkLive(HValue* instr, ZoneList<HValue*>* worklist);
-  void PrintLive(HValue* ref, HValue* instr);
-  void MarkLiveInstructions();
-  void RemoveDeadInstructions();
+  static void* cos_x_interval_table() {
+    return const_cast<double*>(&kCosXIntervalTable[0]);
+  }
 };
 
-
 } }  // namespace v8::internal
 
-#endif  // V8_HYDROGEN_DCE_H_
+#endif  // V8_TRIG_TABLE_H_