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

runtime/vm/assembler_arm64.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // NOLINT
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/longjump.h"
@@ skipping 1338 matching lines @@
                             Label* failure,
                             Register instance_reg,
                             Register temp_reg) {
   ASSERT(failure != NULL);
   if (FLAG_inline_alloc) {
     // If this allocation is traced, program will jump to failure path
     // (i.e. the allocation stub) which will allocate the object and trace the
     // 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.
     AddImmediateSetFlags(instance_reg, instance_reg, instance_size);
 
     // instance_reg: potential next object start.
     ldr(TMP, Address(temp_reg, Heap::EndOffset(space)));
     CompareRegisters(TMP, instance_reg);
     // fail if heap end unsigned less than or equal to instance_reg.
     b(failure, LS);
@@ skipping 24 matching lines @@
                                  Label* failure,
                                  Register instance,
                                  Register end_address,
                                  Register temp1,
                                  Register temp2) {
   if (FLAG_inline_alloc) {
     // If this allocation is traced, program will jump to failure path
     // (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)));
     AddImmediateSetFlags(end_address, instance, instance_size);
     b(failure, CS);  // Fail on unsigned overflow.
 
     // Check if the allocation fits into the remaining space.
     // instance: potential new object start.
     // end_address: potential next object start.
     ldr(temp2, Address(temp1, Heap::EndOffset(space)));
@@ skipping 56 matching lines @@
     add(base, array, Operand(index, LSL, shift));
   }
   const OperandSize size = Address::OperandSizeFor(cid);
   ASSERT(Address::CanHoldOffset(offset, Address::Offset, size));
   return Address(base, offset, Address::Offset, size);
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64