Revert "Unbreak build with clang."

src/objects.h

 // Copyright 2012 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_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include "src/allocation.h"
 #include "src/assert-scope.h"
 #include "src/builtins.h"
@@ skipping 8987 matching lines @@
   class ArrayIndexLengthBits : public BitField<unsigned int,
       kNofHashBitFields + kArrayIndexValueBits,
       kArrayIndexLengthBits> {};  // NOLINT
 
   // Check that kMaxCachedArrayIndexLength + 1 is a power of two so we
   // could use a mask to test if the length of string is less than or equal to
   // kMaxCachedArrayIndexLength.
   STATIC_ASSERT(IS_POWER_OF_TWO(kMaxCachedArrayIndexLength + 1));
 
   static const unsigned int kContainsCachedArrayIndexMask =
-      (~kMaxCachedArrayIndexLength << ArrayIndexLengthBits::kShift) |
+      (~static_cast<unsigned>(kMaxCachedArrayIndexLength)
+       << ArrayIndexLengthBits::kShift) |
       kIsNotArrayIndexMask;
 
   // Value of empty hash field indicating that the hash is not computed.
   static const int kEmptyHashField =
       kIsNotArrayIndexMask | kHashNotComputedMask;
 
  protected:
   static inline bool IsHashFieldComputed(uint32_t field);
 
  private:
@@ skipping 63 matching lines @@
   class ArrayIndexLengthBits : public BitField<unsigned int,
       kNofHashBitFields + kArrayIndexValueBits,
       kArrayIndexLengthBits> {};  // NOLINT
 
   // Check that kMaxCachedArrayIndexLength + 1 is a power of two so we
   // could use a mask to test if the length of string is less than or equal to
   // kMaxCachedArrayIndexLength.
   STATIC_ASSERT(IS_POWER_OF_TWO(kMaxCachedArrayIndexLength + 1));
 
   static const unsigned int kContainsCachedArrayIndexMask =
-      (~kMaxCachedArrayIndexLength << ArrayIndexLengthBits::kShift) |
+      (~static_cast<unsigned>(kMaxCachedArrayIndexLength)
+       << ArrayIndexLengthBits::kShift) |
       kIsNotArrayIndexMask;
 
   // Representation of the flat content of a String.
   // A non-flat string doesn't have flat content.
   // A flat string has content that's encoded as a sequence of either
   // ASCII chars or two-byte UC16.
   // Returned by String::GetFlatContent().
   class FlatContent {
    public:
     // Returns true if the string is flat and this structure contains content.
@@ skipping 2162 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_