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

runtime/vm/assembler_ia32.cc

Index: runtime/vm/assembler_ia32.cc
diff --git a/runtime/vm/assembler_ia32.cc b/runtime/vm/assembler_ia32.cc
index e8851ac6d4d94165991580a2d65549f388884f6a..8b988e5a4edac71c21a8b3788b9f9b6b81b60a6c 100644
--- a/runtime/vm/assembler_ia32.cc
+++ b/runtime/vm/assembler_ia32.cc
@@ -2773,7 +2773,7 @@ void Assembler::TryAllocate(const Class& cls,
     // allocation call site.
     MaybeTraceAllocation(cls.id(), temp_reg, failure, near_jump);
     const intptr_t instance_size = cls.instance_size();
-    Heap::Space space = Heap::SpaceForAllocation(cls.id());
+    Heap::Space space = Heap::kNew;
     movl(temp_reg, Address(THR, Thread::heap_offset()));
     movl(instance_reg, Address(temp_reg, Heap::TopOffset(space)));
     addl(instance_reg, Immediate(instance_size));
@@ -2811,7 +2811,7 @@ void Assembler::TryAllocateArray(intptr_t cid,
     // (i.e. the allocation stub) which will allocate the object and trace the
     // allocation call site.
     MaybeTraceAllocation(cid, temp_reg, failure, near_jump);
-    Heap::Space space = Heap::SpaceForAllocation(cid);
+    Heap::Space space = Heap::kNew;
     movl(temp_reg, Address(THR, Thread::heap_offset()));
     movl(instance, Address(temp_reg, Heap::TopOffset(space)));
     movl(end_address, instance);