Allocate some data structures in old instead of in new space. Early inlining bailout for native fun…

runtime/vm/heap.cc

Index: runtime/vm/heap.cc
diff --git a/runtime/vm/heap.cc b/runtime/vm/heap.cc
index 038ea1b1d3fa3c25e81bbc445cffc9e6d0d6b5cb..0e0eeaf19b6e772ab82ceddec4cc374990714942 100644
--- a/runtime/vm/heap.cc
+++ b/runtime/vm/heap.cc
@@ -161,6 +161,7 @@ uword Heap::AllocatePretenured(intptr_t size) {
 void Heap::AllocateExternal(intptr_t size, Space space) {
   ASSERT(Thread::Current()->no_safepoint_scope_depth() == 0);
   if (space == kNew) {
+    isolate()->AssertCurrentThreadIsMutator();
     new_space_.AllocateExternal(size);
     if (new_space_.ExternalInWords() > (FLAG_new_gen_ext_limit * MBInWords)) {
       // Attempt to free some external allocation by a scavenge. (If the total
@@ -178,6 +179,7 @@ void Heap::AllocateExternal(intptr_t size, Space space) {
 
 void Heap::FreeExternal(intptr_t size, Space space) {
   if (space == kNew) {
+    isolate()->AssertCurrentThreadIsMutator();
     new_space_.FreeExternal(size);
   } else {
     ASSERT(space == kOld);