Resubmit change 6302 after fixing the compiler warning on older GCC compiler versions:

vm/bitmap.cc

Index: vm/bitmap.cc
===================================================================
--- vm/bitmap.cc	(revision 6329)
+++ vm/bitmap.cc	(working copy)
@@ -63,8 +63,8 @@
 
 
 void BitmapBuilder::SetBits(const Stackmap& bitmap) {
-  intptr_t min = bitmap.Minimum();
-  intptr_t max = bitmap.Maximum();
+  intptr_t min = bitmap.MinimumBitOffset();
+  intptr_t max = bitmap.MaximumBitOffset();
   if (min == Stackmap::kNoMinimum || max == Stackmap::kNoMaximum) {
     return;
   }