Make array allocation stub shared between isolates.

runtime/vm/profiler.cc

Index: runtime/vm/profiler.cc
diff --git a/runtime/vm/profiler.cc b/runtime/vm/profiler.cc
index b674952c42fdb22f89c94cddca4d18967a8a0734..8dc13094703f21b0f186ba4810a0319081f42e56 100644
--- a/runtime/vm/profiler.cc
+++ b/runtime/vm/profiler.cc
@@ -464,7 +464,7 @@ class ProfilerDartStackWalker : public ValueObject {
     }
     ASSERT(ValidFramePointer());
     uword return_pc = InitialReturnAddress();
-    if (StubCode::InInvocationStubForIsolate(isolate_, return_pc)) {
+    if (StubCode::InInvocationStub(return_pc)) {
       // Edge case- we have called out from the Invocation Stub but have not
       // created the stack frame of the callee. Attempt to locate the exit
       // frame before walking the stack.
@@ -488,16 +488,14 @@ class ProfilerDartStackWalker : public ValueObject {
     if (!ValidFramePointer()) {
       return false;
     }
-    if (StubCode::InInvocationStubForIsolate(isolate_,
-                                             reinterpret_cast<uword>(pc_))) {
+    if (StubCode::InInvocationStub(reinterpret_cast<uword>(pc_))) {
       // In invocation stub.
       return NextExit();
     }
     // In regular Dart frame.
     uword* new_pc = CallerPC();
     // Check if we've moved into the invocation stub.
-    if (StubCode::InInvocationStubForIsolate(isolate_,
-                                             reinterpret_cast<uword>(new_pc))) {
+    if (StubCode::InInvocationStub(reinterpret_cast<uword>(new_pc))) {
       // New PC is inside invocation stub, skip.
       return NextExit();
     }
@@ -827,8 +825,7 @@ void Profiler::RecordAllocation(Isolate* isolate, intptr_t cid) {
   }
   ASSERT(isolate != Dart::vm_isolate());
 
-  const bool exited_dart_code = (isolate->stub_code() != NULL) &&
-                                (isolate->top_exit_frame_info() != 0) &&
+  const bool exited_dart_code = (isolate->top_exit_frame_info() != 0) &&
                                 (isolate->vm_tag() != VMTag::kDartTagId);
 
   if (!exited_dart_code) {
@@ -883,11 +880,9 @@ void Profiler::RecordSampleInterruptCallback(
 
   ASSERT(isolate != Dart::vm_isolate());
 
-  const bool exited_dart_code = (isolate->stub_code() != NULL) &&
-                                (isolate->top_exit_frame_info() != 0) &&
+  const bool exited_dart_code = (isolate->top_exit_frame_info() != 0) &&
                                 (isolate->vm_tag() != VMTag::kDartTagId);
-  const bool in_dart_code = (isolate->stub_code() != NULL) &&
-                            (isolate->top_exit_frame_info() == 0) &&
+  const bool in_dart_code = (isolate->top_exit_frame_info() == 0) &&
                             (isolate->vm_tag() == VMTag::kDartTagId);
 
   uintptr_t sp = 0;