Reland regexp global optimizations.

src/unicode-inl.h

 // Copyright 2007-2010 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
@@ skipping 11 matching lines @@
 // 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_UNICODE_INL_H_
 #define V8_UNICODE_INL_H_
 
 #include "unicode.h"
+#include "checks.h"
 
 namespace unibrow {
 
 template <class T, int s> bool Predicate<T, s>::get(uchar code_point) {
   CacheEntry entry = entries_[code_point & kMask];
   if (entry.code_point_ == code_point) return entry.value_;
   return CalculateValue(code_point);
 }
 
 template <class T, int s> bool Predicate<T, s>::CalculateValue(
@@ skipping 95 matching lines @@
 }
 
 uchar CharacterStream::GetNext() {
   uchar result = DecodeCharacter(buffer_, &cursor_);
   if (remaining_ == 1) {
     cursor_ = 0;
     FillBuffer();
   } else {
     remaining_--;
   }
+  ASSERT(BoundsCheck(cursor_));
   return result;
 }
 
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 #define IF_LITTLE(expr) expr
 #define IF_BIG(expr)    ((void) 0)
 #elif __BYTE_ORDER == __BIG_ENDIAN
 #define IF_LITTLE(expr) ((void) 0)
 #define IF_BIG(expr)    expr
 #else
@@ skipping 83 matching lines @@
 
 template <unsigned s>
 Utf8InputBuffer<s>::Utf8InputBuffer(const char* data, unsigned length)
     : InputBuffer<Utf8, Buffer<const char*>, s>(Buffer<const char*>(data,
                                                                     length)) {
 }
 
 }  // namespace unibrow
 
 #endif  // V8_UNICODE_INL_H_