Remove support for pretenuring as it is not fully implemented and is currently turned on for a very…

runtime/vm/assembler_arm64.cc

Index: runtime/vm/assembler_arm64.cc
diff --git a/runtime/vm/assembler_arm64.cc b/runtime/vm/assembler_arm64.cc
index 9832dae6d621bddc1cf8eb30672d3522c3a86fb8..9934e460d90c1adbb23e48f9c4f6e5f7a92b795d 100644
--- a/runtime/vm/assembler_arm64.cc
+++ b/runtime/vm/assembler_arm64.cc
@@ -1356,7 +1356,7 @@ void Assembler::TryAllocate(const Class& cls,
     // allocation call site.
     MaybeTraceAllocation(cls.id(), temp_reg, failure);
     const intptr_t instance_size = cls.instance_size();
-    Heap::Space space = Heap::SpaceForAllocation(cls.id());
+    Heap::Space space = Heap::kNew;
     ldr(temp_reg, Address(THR, Thread::heap_offset()));
     ldr(instance_reg, Address(temp_reg, Heap::TopOffset(space)));
     // TODO(koda): Protect against unsigned overflow here.
@@ -1401,7 +1401,7 @@ void Assembler::TryAllocateArray(intptr_t cid,
     // (i.e. the allocation stub) which will allocate the object and trace the
     // allocation call site.
     MaybeTraceAllocation(cid, temp1, failure);
-    Heap::Space space = Heap::SpaceForAllocation(cid);
+    Heap::Space space = Heap::kNew;
     ldr(temp1, Address(THR, Thread::heap_offset()));
     // Potential new object start.
     ldr(instance, Address(temp1, Heap::TopOffset(space)));