arm: Move unrolled array initialization to Assembler.

runtime/vm/assembler_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.h"
 #include "vm/cpu.h"
 #include "vm/longjump.h"
@@ skipping 1741 matching lines @@
   Label done;
   StoreIntoObjectFilter(object, value_even, &done);
   StoreIntoObjectFilter(object, value_odd, &done);
   Stop("Store buffer update is required");
   Bind(&done);
 #endif  // defined(DEBUG)
   // No store buffer update.
 }
 
 
+void Assembler::InitializeFieldsNoBarrierUnrolled(Register object,
+                                                  Register begin,
+                                                  intptr_t count,
+                                                  Register value_even,
+                                                  Register value_odd) {
+  ASSERT(value_odd == value_even + 1);
+  intptr_t current_offset = 0;
+  const intptr_t end_offset = count * kWordSize;
+  while (current_offset + kWordSize < end_offset) {
+    strd(value_even, Address(begin, current_offset));
+    current_offset += 2*kWordSize;
+  }
+  while (current_offset < end_offset) {
+    str(value_even, Address(begin, current_offset));
+    current_offset += kWordSize;
+  }
+#if defined(DEBUG)
+  Label done;
+  StoreIntoObjectFilter(object, value_even, &done);
+  StoreIntoObjectFilter(object, value_odd, &done);
+  Stop("Store buffer update is required");
+  Bind(&done);
+#endif  // defined(DEBUG)
+  // No store buffer update.
+}
+
+
 void Assembler::LoadClassId(Register result, Register object, Condition cond) {
   ASSERT(RawObject::kClassIdTagPos == 16);
   ASSERT(RawObject::kClassIdTagSize == 16);
   const intptr_t class_id_offset = Object::tags_offset() +
       RawObject::kClassIdTagPos / kBitsPerByte;
   ldrh(result, FieldAddress(object, class_id_offset), cond);
 }
 
 
 void Assembler::LoadClassById(Register result, Register class_id) {
@@ skipping 1674 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfFpuRegisters));
   return fpu_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM