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

runtime/vm/stub_code_arm.cc

Index: runtime/vm/stub_code_arm.cc
diff --git a/runtime/vm/stub_code_arm.cc b/runtime/vm/stub_code_arm.cc
index 538cd334a66fee268c7fa262e39523e2fae52e41..c6c54c63b3aa85e5c2e15baf6b03a52d78331062 100644
--- a/runtime/vm/stub_code_arm.cc
+++ b/runtime/vm/stub_code_arm.cc
@@ -634,7 +634,7 @@ void StubCode::GenerateAllocateArrayStub(Assembler* assembler) {
   __ bic(R9, R9, Operand(kObjectAlignment - 1));
 
   // R9: Allocation size.
-  Heap::Space space = Heap::SpaceForAllocation(cid);
+  Heap::Space space = Heap::kNew;
   __ LoadIsolate(R8);
   __ ldr(R8, Address(R8, Isolate::heap_offset()));
   // Potential new object start.
@@ -863,7 +863,7 @@ void StubCode::GenerateAllocateContextStub(Assembler* assembler) {
     // R1: number of context variables.
     // R2: object size.
     const intptr_t cid = kContextCid;
-    Heap::Space space = Heap::SpaceForAllocation(cid);
+    Heap::Space space = Heap::kNew;
     __ LoadIsolate(R9);
     __ ldr(R9, Address(R9, Isolate::heap_offset()));
     __ ldr(R0, Address(R9, Heap::TopOffset(space)));
@@ -1062,7 +1062,7 @@ void StubCode::GenerateAllocationStubForClass(Assembler* assembler,
     Label slow_case;
     // Allocate the object and update top to point to
     // next object start and initialize the allocated object.
-    Heap::Space space = Heap::SpaceForAllocation(cls.id());
+    Heap::Space space = Heap::kNew;
     __ ldr(R9, Address(THR, Thread::heap_offset()));
     __ ldr(R0, Address(R9, Heap::TopOffset(space)));
     __ AddImmediate(R1, R0, instance_size);