Create code and instruction object, and install them in the background compilation thread while br…

runtime/vm/stub_code.cc

Index: runtime/vm/stub_code.cc
diff --git a/runtime/vm/stub_code.cc b/runtime/vm/stub_code.cc
index e9fffc249f241b02d82ac14957c99c7c3f7da2a7..e991fdb53a9ee7c8639ae58f1fdc6cc258d80c94 100644
--- a/runtime/vm/stub_code.cc
+++ b/runtime/vm/stub_code.cc
@@ -116,7 +116,7 @@ RawCode* StubCode::GetAllocationStubForClass(const Class& cls) {
     Assembler assembler;
     const char* name = cls.ToCString();
     StubCode::GenerateAllocationStubForClass(&assembler, cls);
-    stub ^= Code::FinalizeCode(name, &assembler);
+    stub ^= Code::FinalizeCode(name, &assembler, false /* optimized */);
     stub.set_owner(cls);
     cls.set_allocation_stub(stub);
     if (FLAG_disassemble_stubs) {
@@ -153,7 +153,8 @@ RawCode* StubCode::Generate(const char* name,
                             void (*GenerateStub)(Assembler* assembler)) {
   Assembler assembler;
   GenerateStub(&assembler);
-  const Code& code = Code::Handle(Code::FinalizeCode(name, &assembler));
+  const Code& code = Code::Handle(
+      Code::FinalizeCode(name, &assembler, false /* optimized */));
   if (FLAG_disassemble_stubs) {
     LogBlock lb;
     THR_Print("Code for stub '%s': {\n", name);