Don't track allocations in product mode.

runtime/vm/assembler_arm.cc

Index: runtime/vm/assembler_arm.cc
diff --git a/runtime/vm/assembler_arm.cc b/runtime/vm/assembler_arm.cc
index bca44b7dde3b54af4d91bbb31878a0d563fc9e9b..db7881d4c278a3abe36ef5e13d88bbff5fd56072 100644
--- a/runtime/vm/assembler_arm.cc
+++ b/runtime/vm/assembler_arm.cc
@@ -3237,6 +3237,18 @@ void Assembler::LeaveStubFrame() {
 }
 
 
+#ifndef PRODUCT
+void Assembler::MaybeTraceAllocation(intptr_t cid,
+                                     Register temp_reg,
+                                     Label* trace) {
+  LoadAllocationStatsAddress(temp_reg, cid);
+  const uword state_offset = ClassHeapStats::state_offset();
+  ldr(temp_reg, Address(temp_reg, state_offset));
+  tst(temp_reg, Operand(ClassHeapStats::TraceAllocationMask()));
+  b(trace, NE);
+}
+
+
 void Assembler::LoadAllocationStatsAddress(Register dest,
                                            intptr_t cid) {
   ASSERT(dest != kNoRegister);
@@ -3251,17 +3263,6 @@ void Assembler::LoadAllocationStatsAddress(Register dest,
 }
 
 
-void Assembler::MaybeTraceAllocation(intptr_t cid,
-                                     Register temp_reg,
-                                     Label* trace) {
-  LoadAllocationStatsAddress(temp_reg, cid);
-  const uword state_offset = ClassHeapStats::state_offset();
-  ldr(temp_reg, Address(temp_reg, state_offset));
-  tst(temp_reg, Operand(ClassHeapStats::TraceAllocationMask()));
-  b(trace, NE);
-}
-
-
 void Assembler::IncrementAllocationStats(Register stats_addr_reg,
                                          intptr_t cid,
                                          Heap::Space space) {
@@ -3298,6 +3299,7 @@ void Assembler::IncrementAllocationStatsWithSize(Register stats_addr_reg,
   add(TMP, TMP, Operand(size_reg));
   str(TMP, size_address);
 }
+#endif  // !PRODUCT
 
 
 void Assembler::TryAllocate(const Class& cls,