Don't bother trying to reuse object pool entries for ICs, type test caches, or edge counters as the…

runtime/vm/assembler_arm.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"  // NOLINT
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/longjump.h"
@@ skipping 1545 matching lines @@
      CodeSize() + Instr::kPCReadOffset;
   LoadFromOffset(kWord, PP, PC, -object_pool_pc_dist);
 }
 
 
 void Assembler::LoadIsolate(Register rd) {
   ldr(rd, Address(THR, Thread::isolate_offset()));
 }
 
 
-void Assembler::LoadObject(Register rd, const Object& object, Condition cond) {
+void Assembler::LoadObjectHelper(Register rd,
+                                 const Object& object,
+                                 Condition cond,
+                                 bool is_unique) {
   // Smis and VM heap objects are never relocated; do not use object pool.
   if (object.IsSmi()) {
     LoadImmediate(rd, reinterpret_cast<int32_t>(object.raw()), cond);
   } else if (object.InVMHeap() || !allow_constant_pool()) {
     // Make sure that class CallPattern is able to decode this load immediate.
     const int32_t object_raw = reinterpret_cast<int32_t>(object.raw());
     LoadImmediate(rd, object_raw, cond);
   } else {
     // Make sure that class CallPattern is able to decode this load from the
     // object pool.
-    const int32_t offset =
-        ObjectPool::element_offset(object_pool_wrapper_.FindObject(object));
+    const int32_t offset = ObjectPool::element_offset(
+       is_unique ? object_pool_wrapper_.AddObject(object)
+                 : object_pool_wrapper_.FindObject(object));
     LoadWordFromPoolOffset(rd, offset - kHeapObjectTag, cond);
   }
 }
 
 
+void Assembler::LoadObject(Register rd, const Object& object, Condition cond) {
+  LoadObjectHelper(rd, object, cond, false);
+}
+
+
+void Assembler::LoadUniqueObject(Register rd,
+                                 const Object& object,
+                                 Condition cond) {
+  LoadObjectHelper(rd, object, cond, true);
+}
+
+
 void Assembler::LoadExternalLabel(Register rd,
                                   const ExternalLabel* label,
                                   Patchability patchable,
                                   Condition cond) {
   const int32_t offset = ObjectPool::element_offset(
       object_pool_wrapper_.FindExternalLabel(label, patchable));
   LoadWordFromPoolOffset(rd, offset - kHeapObjectTag, cond);
 }
 
 
@@ skipping 1993 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfFpuRegisters));
   return fpu_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM