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

runtime/vm/assembler_macros_arm.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"
-#if defined(TARGET_ARCH_ARM)
-
-#include "vm/assembler_macros.h"
-
-#include "vm/assembler.h"
-
-namespace dart {
-
-#define __ assembler->
-
-
-void AssemblerMacros::TryAllocate(Assembler* assembler,
-                                  const Class& cls,
-                                  Label* failure,
-                                  bool near_jump,
-                                  Register instance_reg) {
-  UNIMPLEMENTED();
-}
-
-
-void AssemblerMacros::EnterDartFrame(Assembler* assembler,
-                                     intptr_t frame_size) {
-  const intptr_t offset = assembler->CodeSize();
-  // Save PC in frame for fast identification of corresponding code.
-  // Note that callee-saved registers can be added to the register list.
-  __ EnterFrame((1 << PP) | (1 << FP) | (1 << LR) | (1 << PC), 0);
-
-  if (offset != 0) {
-    // Adjust saved PC for any intrinsic code that could have been generated
-    // before a frame is created. Use PP as temp register.
-    __ ldr(PP, Address(FP, 2 * kWordSize));
-    __ AddImmediate(PP, PP, -offset);
-    __ str(PP, Address(FP, 2 * kWordSize));
-  }
-
-  // Setup pool pointer for this dart function.
-  const intptr_t object_pool_pc_dist =
-     Instructions::HeaderSize() - Instructions::object_pool_offset() +
-     assembler->CodeSize() + Instr::kPCReadOffset;
-  __ ldr(PP, Address(PC, -object_pool_pc_dist));
-
-  // Reserve space for locals.
-  __ AddImmediate(SP, -frame_size);
-}
-
-
-void AssemblerMacros::LeaveDartFrame(Assembler* assembler) {
-  __ LeaveFrame((1 << PP) | (1 << FP) | (1 << LR));
-  // Adjust SP for PC pushed in EnterDartFrame.
-  __ AddImmediate(SP, kWordSize);
-}
-
-
-void AssemblerMacros::EnterStubFrame(Assembler* assembler) {
-  // Push 0 as saved PC for stub frames.
-  __ mov(IP, ShifterOperand(LR));
-  __ mov(LR, ShifterOperand(0));
-  __ EnterFrame((1 << FP) | (1 << IP) | (1 << LR), 0);
-}
-
-
-void AssemblerMacros::LeaveStubFrame(Assembler* assembler) {
-  __ LeaveFrame((1 << FP) | (1 << LR));
-  // Adjust SP for null PC pushed in EnterStubFrame.
-  __ AddImmediate(SP, kWordSize);
-}
-
-}  // namespace dart
-
-#endif  // defined TARGET_ARCH_ARM
-