Turn range analysis into proper HPhase.

src/hydrogen-range-analysis.h

Index: src/hydrogen-range-analysis.h
diff --git a/src/hydrogen-escape-analysis.h b/src/hydrogen-range-analysis.h
similarity index 70%
copy from src/hydrogen-escape-analysis.h
copy to src/hydrogen-range-analysis.h
index 1d31f3dce7e789320c7fdd8439a9f11e1bb35236..52ce109c8797d0f65edc01b733e90bda93008db3 100644
--- a/src/hydrogen-escape-analysis.h
+++ b/src/hydrogen-range-analysis.h
@@ -25,33 +25,37 @@
 // (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_ESCAPE_ANALYSIS_H_
-#define V8_HYDROGEN_ESCAPE_ANALYSIS_H_
+#ifndef V8_HYDROGEN_RANGE_ANALYSIS_H_
+#define V8_HYDROGEN_RANGE_ANALYSIS_H_
 
-#include "allocation.h"
 #include "hydrogen.h"
 
 namespace v8 {
 namespace internal {
 
 
-class HEscapeAnalysis BASE_EMBEDDED {
+class HRangeAnalysisPhase : public HPhase {
  public:
-  explicit HEscapeAnalysis(HGraph* graph)
-      : graph_(graph), zone_(graph->zone()), captured_(0, zone_) { }
+  explicit HRangeAnalysisPhase(HGraph* graph)
+      : HPhase("H_Range analysis", graph), changed_ranges_(16, zone()) { }
 
-  void Analyze();
+  void Run() {
+    Analyze(graph()->entry_block());
+  }
 
  private:
-  void CollectCapturedValues();
-  void CollectIfNoEscapingUses(HInstruction* instr);
-
-  HGraph* graph_;
-  Zone* zone_;
-  ZoneList<HValue*> captured_;
+  void TraceRange(const char* msg, ...);
+  void Analyze(HBasicBlock* block);
+  void InferControlFlowRange(HCompareIDAndBranch* 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_HYDROGEN_ESCAPE_ANALYSIS_H_
+#endif  // V8_HYDROGEN_RANGE_ANALYSIS_H_