Use GPRs for mints

runtime/vm/flow_graph_compiler.cc

 // Copyright (c) 2013, 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/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/cha.h"
 #include "vm/dart_entry.h"
@@ skipping 543 matching lines @@
               bitmap->Set(bitmap->Length(), false);
             }
           }
         }
       }
       // General purpose registers have the lowest register number at the
       // highest address (i.e., first in the stackmap).
       for (intptr_t i = 0; i < kNumberOfCpuRegisters; ++i) {
         Register reg = static_cast<Register>(i);
         if (locs->live_registers()->ContainsRegister(reg)) {
-          bitmap->Set(bitmap->Length(), true);
+          bitmap->Set(bitmap->Length(), locs->live_registers()->IsTagged(reg));
         }
       }
     }
 
     intptr_t register_bit_count = bitmap->Length() - StackSize();
     stackmap_table_builder_->AddEntry(assembler()->CodeSize(),
                                       bitmap,
                                       register_bit_count);
   }
 }
@@ skipping 750 matching lines @@
 
   for (int i = 0; i < len; i++) {
     sorted->Add(CidTarget(ic_data.GetReceiverClassIdAt(i),
                           &Function::ZoneHandle(ic_data.GetTargetAt(i)),
                           ic_data.GetCountAt(i)));
   }
   sorted->Sort(HighestCountFirst);
 }
 
 }  // namespace dart