Update Assembler::TryAllocate to support inline allocation tracing

runtime/vm/assembler_arm.h

 // 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.
 
 #ifndef VM_ASSEMBLER_ARM_H_
 #define VM_ASSEMBLER_ARM_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_arm.h directly; use assembler.h instead.
 #endif
@@ skipping 892 matching lines @@
   static intptr_t EntryPointToPcMarkerOffset() {
     return TargetCPUFeatures::store_pc_read_offset();
   }
 
   // The register into which the allocation stats table is loaded with
   // LoadAllocationStatsAddress should be passed to
   // IncrementAllocationStats(WithSize) as stats_addr_reg to update the
   // allocation stats. These are separate assembler macros so we can
   // avoid a dependent load too nearby the load of the table address.
   void LoadAllocationStatsAddress(Register dest,
-                                  intptr_t cid,
-                                  Heap::Space space);
+                                  intptr_t cid);
   void IncrementAllocationStats(Register stats_addr,
                                 intptr_t cid,
                                 Heap::Space space);
   void IncrementAllocationStatsWithSize(Register stats_addr_reg,
                                         Register size_reg,
                                         intptr_t cid,
                                         Heap::Space space);
 
   Address ElementAddressForIntIndex(bool is_load,
                                     bool is_external,
                                     intptr_t cid,
                                     intptr_t index_scale,
                                     Register array,
                                     intptr_t index,
                                     Register temp);
 
   Address ElementAddressForRegIndex(bool is_load,
                                     bool is_external,
                                     intptr_t cid,
                                     intptr_t index_scale,
                                     Register array,
                                     Register index);
 
+  // If allocation tracing for |cid| is enabled, will jump to |trace| label,
+  // which will allocate in the runtime where tracing occurs.
+  void MaybeTraceAllocation(intptr_t cid,
+                            Register temp_reg,
+                            Label* trace);
+
   // Inlined allocation of an instance of class 'cls', code has no runtime
   // calls. Jump to 'failure' if the instance cannot be allocated here.
   // Allocated instance is returned in 'instance_reg'.
   // Only the tags field of the object is initialized.
   void TryAllocate(const Class& cls,
                    Label* failure,
                    Register instance_reg,
                    Register temp_reg);
 
   void TryAllocateArray(intptr_t cid,
@@ skipping 187 matching lines @@
                      Register new_value,
                      FieldContent old_content);
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_ARM_H_