Remove the barely used macro assemblers after merging their contents to the base

runtime/vm/assembler_macros_x64.cc

-// Copyright (c) 2011, 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"
-#if defined(TARGET_ARCH_X64)
-
-#include "vm/assembler_macros.h"
-
-#include "vm/assembler.h"
-
-namespace dart {
-
-DECLARE_FLAG(bool, inline_alloc);
-
-#define __ assembler->
-
-// Static.
-void AssemblerMacros::TryAllocate(Assembler* assembler,
-                                  const Class& cls,
-                                  Label* failure,
-                                  bool near_jump,
-                                  Register instance_reg) {
-  ASSERT(failure != NULL);
-  if (FLAG_inline_alloc) {
-    Heap* heap = Isolate::Current()->heap();
-    const intptr_t instance_size = cls.instance_size();
-    __ movq(TMP, Immediate(heap->TopAddress()));
-    __ movq(instance_reg, Address(TMP, 0));
-    __ addq(instance_reg, Immediate(instance_size));
-    // instance_reg: potential next object start.
-    __ movq(TMP, Immediate(heap->EndAddress()));
-    __ cmpq(instance_reg, Address(TMP, 0));
-    __ 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(TMP, Immediate(heap->TopAddress()));
-    __ movq(Address(TMP, 0), instance_reg);
-    ASSERT(instance_size >= kHeapObjectTag);
-    __ subq(instance_reg, Immediate(instance_size - kHeapObjectTag));
-    uword tags = 0;
-    tags = RawObject::SizeTag::update(instance_size, tags);
-    ASSERT(cls.id() != kIllegalCid);
-    tags = RawObject::ClassIdTag::update(cls.id(), tags);
-    __ movq(FieldAddress(instance_reg, Object::tags_offset()), Immediate(tags));
-  } else {
-    __ jmp(failure);
-  }
-}
-
-
-void AssemblerMacros::EnterDartFrame(Assembler* assembler,
-                                     intptr_t frame_size) {
-  const intptr_t offset = assembler->CodeSize();
-  __ EnterFrame(0);
-  Label dart_entry;
-  __ call(&dart_entry);
-  __ Bind(&dart_entry);
-  // Adjust saved PC for any intrinsic code that could have been generated
-  // before a frame is created.
-  if (offset != 0) {
-    __ addq(Address(RSP, 0), Immediate(-offset));
-  }
-  if (frame_size != 0) {
-    __ subq(RSP, Immediate(frame_size));
-  }
-}
-
-
-void AssemblerMacros::EnterStubFrame(Assembler* assembler) {
-  __ EnterFrame(0);
-  __ pushq(Immediate(0));  // Push 0 in the saved PC area for stub frames.
-}
-
-#undef __
-
-}  // namespace dart
-
-#endif  // defined TARGET_ARCH_X64