Make stackmaps store their actual length.

runtime/vm/bitmap.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/bitmap.h"
 
 #include "platform/assert.h"
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 44 matching lines @@
 }
 
 
 void BitmapBuilder::SetRange(intptr_t min, intptr_t max, bool value) {
   for (intptr_t i = min; i <= max; i++) {
     Set(i, value);
   }
 }
 
 
-void BitmapBuilder::SetBits(const Stackmap& stackmap) {
-  intptr_t min = stackmap.MinimumBitIndex();
-  intptr_t max = stackmap.MaximumBitIndex();
-  if (min == Stackmap::kNoMinimum || max == Stackmap::kNoMaximum) {
-    return;
-  }
-  for (intptr_t i = 0; i < min; i++) {
-    Set(i, false);
-  }
-  for (intptr_t i = min; i <= max; i++) {
-    Set(i, stackmap.IsObject(i));
-  }
-  intptr_t bound = SizeInBits();
-  for (intptr_t i = (max + 1); i < bound; i++) {
-    Set(i, false);
-  }
-}
-
-
 bool BitmapBuilder::GetBit(intptr_t bit_offset) const {
   ASSERT(InRange(bit_offset));
   int byte_offset = bit_offset >> kBitsPerByteLog2;
   int bit_remainder = bit_offset & (kBitsPerByte - 1);
   uint8_t mask = 1U << bit_remainder;
   ASSERT(bit_list_ != NULL);
   return ((bit_list_[byte_offset] & mask) != 0);
 }
 
 
 void BitmapBuilder::SetBit(intptr_t bit_offset, bool value) {
   ASSERT(InRange(bit_offset));
   int byte_offset = bit_offset >> kBitsPerByteLog2;
   int bit_remainder = bit_offset & (kBitsPerByte - 1);
   uint8_t mask = 1U << bit_remainder;
   uint8_t* byte_addr;
   ASSERT(bit_list_ != NULL);
   byte_addr = &(bit_list_[byte_offset]);
   if (value) {
     *byte_addr |= mask;
   } else {
     *byte_addr &= ~mask;
   }
 }
 
 }  // namespace dart