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

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"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/heap.h"
 #include "vm/memory_region.h"
 #include "vm/runtime_entry.h"
 #include "vm/stub_code.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, print_stop_message, true, "Print stop message.");
 DEFINE_FLAG(bool, use_sse41, true, "Use SSE 4.1 if available");
+DECLARE_FLAG(bool, inline_alloc);
 
 
 bool CPUFeatures::sse4_1_supported_ = false;
 #ifdef DEBUG
 bool CPUFeatures::initialized_ = false;
 #endif
 
 bool CPUFeatures::sse4_1_supported() {
   DEBUG_ASSERT(initialized_);
   return sse4_1_supported_ && FLAG_use_sse41;
@@ skipping 2183 matching lines @@
 
   leave();
 }
 
 
 void Assembler::CallRuntime(const RuntimeEntry& entry) {
   entry.Call(this);
 }
 
 
+void Assembler::EnterDartFrame(intptr_t frame_size) {
+  const intptr_t offset = 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 Assembler::EnterStubFrame() {
+  EnterFrame(0);
+  pushq(Immediate(0));  // Push 0 in the saved PC area for stub frames.
+}
+
+
+void Assembler::TryAllocate(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 Assembler::Align(int alignment, int offset) {
   ASSERT(Utils::IsPowerOfTwo(alignment));
   int pos = offset + buffer_.GetPosition();
   int mod = pos & (alignment - 1);
   if (mod == 0) {
     return;
   }
   int bytes_needed = alignment - mod;
   while (bytes_needed > MAX_NOP_SIZE) {
     nop(MAX_NOP_SIZE);
@@ skipping 174 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