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

runtime/vm/assembler_x64.cc

 // Copyright (c) 2013, 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_X64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/heap.h"
@@ skipping 3505 matching lines @@
                             bool near_jump,
                             Register instance_reg,
                             Register temp) {
   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(), failure, near_jump);
     const intptr_t instance_size = cls.instance_size();
-    Heap::Space space = Heap::SpaceForAllocation(cls.id());
+    Heap::Space space = Heap::kNew;
     movq(temp, Address(THR, Thread::heap_offset()));
     movq(instance_reg, Address(temp, Heap::TopOffset(space)));
     addq(instance_reg, Immediate(instance_size));
     // instance_reg: potential next object start.
     cmpq(instance_reg, Address(temp, Heap::EndOffset(space)));
     j(ABOVE_EQUAL, failure, near_jump);
     // Successfully allocated the object, now update top to point to
     // next object start and store the class in the class field of object.
     movq(Address(temp, Heap::TopOffset(space)), instance_reg);
     UpdateAllocationStats(cls.id(), space);
@@ skipping 17 matching lines @@
                                  bool near_jump,
                                  Register instance,
                                  Register end_address,
                                  Register temp) {
   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(cid, failure, near_jump);
-    Heap::Space space = Heap::SpaceForAllocation(cid);
+    Heap::Space space = Heap::kNew;
     movq(temp, Address(THR, Thread::heap_offset()));
     movq(instance, Address(temp, Heap::TopOffset(space)));
     movq(end_address, instance);
 
     addq(end_address, Immediate(instance_size));
     j(CARRY, failure);
 
     // Check if the allocation fits into the remaining space.
     // instance: potential new object start.
     // end_address: potential next object start.
@@ skipping 343 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters));
   return xmm_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64