VM: Share some stub code between isolates.

runtime/vm/assembler.cc

Index: runtime/vm/assembler.cc
diff --git a/runtime/vm/assembler.cc b/runtime/vm/assembler.cc
index f2064f824bf02d5b5304c3142ba05b45975da747..3f3e61a12d2b70e046b5d734e739b2f74d96ac10 100644
--- a/runtime/vm/assembler.cc
+++ b/runtime/vm/assembler.cc
@@ -254,8 +254,6 @@ intptr_t ObjectPoolWrapper::AddImmediate(uword imm) {
 
 intptr_t ObjectPoolWrapper::AddObject(ObjectPool::Entry entry,
                                       Patchability patchable) {
-  // The object pool cannot be used in the vm isolate.
-  ASSERT(Isolate::Current() != Dart::vm_isolate());
   object_pool_.Add(entry);
   if (patchable == kNotPatchable) {
     // The object isn't patchable. Record the index for fast lookup.
@@ -268,7 +266,6 @@ intptr_t ObjectPoolWrapper::AddObject(ObjectPool::Entry entry,
 
 intptr_t ObjectPoolWrapper::AddExternalLabel(const ExternalLabel* label,
                                              Patchability patchable) {
-  ASSERT(Isolate::Current() != Dart::vm_isolate());
   return AddObject(ObjectPool::Entry(label->address(),
                                      ObjectPool::kImmediate),
                    patchable);
@@ -277,9 +274,6 @@ intptr_t ObjectPoolWrapper::AddExternalLabel(const ExternalLabel* label,
 
 intptr_t ObjectPoolWrapper::FindObject(ObjectPool::Entry entry,
                                        Patchability patchable) {
-  // The object pool cannot be used in the vm isolate.
-  ASSERT(Isolate::Current() != Dart::vm_isolate());
-
   // If the object is not patchable, check if we've already got it in the
   // object pool.
   if (patchable == kNotPatchable) {
@@ -306,8 +300,6 @@ intptr_t ObjectPoolWrapper::FindImmediate(uword imm) {
 
 intptr_t ObjectPoolWrapper::FindExternalLabel(const ExternalLabel* label,
                                               Patchability patchable) {
-  // The object pool cannot be used in the vm isolate.
-  ASSERT(Isolate::Current() != Dart::vm_isolate());
   return FindObject(ObjectPool::Entry(label->address(),
                                       ObjectPool::kImmediate),
                     patchable);