Merge the "Compute Minus Zero Checks" phase into the range analysis.

src/hydrogen-minus-zero.h

Index: src/hydrogen-minus-zero.h
diff --git a/src/hydrogen-minus-zero.h b/src/hydrogen-minus-zero.h
deleted file mode 100644
index 7b74ab99a4a41b12916e922fa4822db8c5df62ba..0000000000000000000000000000000000000000
--- a/src/hydrogen-minus-zero.h
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2013 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// 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.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (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_MINUS_ZERO_H_
-#define V8_HYDROGEN_MINUS_ZERO_H_
-
-#include "hydrogen.h"
-
-namespace v8 {
-namespace internal {
-
-
-class HComputeMinusZeroChecksPhase : public HPhase {
- public:
-  explicit HComputeMinusZeroChecksPhase(HGraph* graph)
-      : HPhase("H_Compute minus zero checks", graph),
-        in_worklist_(graph->GetMaximumValueID(), zone()),
-        worklist_(32, zone()) {}
-
-  void Run();
-
- private:
-  void AddToWorklist(HValue* value) {
-    if (value->CheckFlag(HValue::kBailoutOnMinusZero)) return;
-    if (in_worklist_.Contains(value->id())) return;
-    in_worklist_.Add(value->id());
-    worklist_.Add(value, zone());
-  }
-  void PropagateMinusZeroChecks(HValue* value);
-
-  BitVector in_worklist_;
-  ZoneList<HValue*> worklist_;
-
-  DISALLOW_COPY_AND_ASSIGN(HComputeMinusZeroChecksPhase);
-};
-
-
-} }  // namespace v8::internal
-
-#endif  // V8_HYDROGEN_MINUS_ZERO_H_