[crankshaft] Refactor kAllowUndefinedAsNaN to kTruncatingToNumber.

src/crankshaft/hydrogen-mark-deoptimize.h

Index: src/crankshaft/hydrogen-mark-deoptimize.h
diff --git a/src/crankshaft/hydrogen-mark-deoptimize.h b/src/crankshaft/hydrogen-mark-deoptimize.h
deleted file mode 100644
index 45d40acd9537165d19528f60402e307bef4bbe79..0000000000000000000000000000000000000000
--- a/src/crankshaft/hydrogen-mark-deoptimize.h
+++ /dev/null
@@ -1,53 +0,0 @@
-// Copyright 2013 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_CRANKSHAFT_HYDROGEN_MARK_DEOPTIMIZE_H_
-#define V8_CRANKSHAFT_HYDROGEN_MARK_DEOPTIMIZE_H_
-
-#include "src/crankshaft/hydrogen.h"
-
-namespace v8 {
-namespace internal {
-
-
-// Compute DeoptimizeOnUndefined flag for phis.  Any phi that can reach a use
-// with DeoptimizeOnUndefined set must have DeoptimizeOnUndefined set.
-// Currently only HCompareNumericAndBranch, with double input representation,
-// has this flag set.  The flag is used by HChange tagged->double, which must
-// deoptimize if one of its uses has this flag set.
-class HMarkDeoptimizeOnUndefinedPhase : public HPhase {
- public:
-  explicit HMarkDeoptimizeOnUndefinedPhase(HGraph* graph)
-      : HPhase("H_Mark deoptimize on undefined", graph),
-        worklist_(16, zone()) {}
-
-  void Run();
-
- private:
-  void ProcessPhi(HPhi* phi);
-
-  // Preallocated worklist used as an optimization so we don't have
-  // to allocate a new ZoneList for every ProcessPhi() invocation.
-  ZoneList<HPhi*> worklist_;
-
-  DISALLOW_COPY_AND_ASSIGN(HMarkDeoptimizeOnUndefinedPhase);
-};
-
-
-class HComputeChangeUndefinedToNaN : public HPhase {
- public:
-  explicit HComputeChangeUndefinedToNaN(HGraph* graph)
-      : HPhase("H_Compute change undefined to nan", graph) {}
-
-  void Run();
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(HComputeChangeUndefinedToNaN);
-};
-
-
-}  // namespace internal
-}  // namespace v8
-
-#endif  // V8_CRANKSHAFT_HYDROGEN_MARK_DEOPTIMIZE_H_