Use memmove instead of a loop to read bytes.

vm/raw_object_snapshot.cc

 // Copyright (c) 2012, 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/bigint_operations.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
 #include "vm/visitor.h"
 
@@ skipping 1197 matching lines @@
 RawBigint* Bigint::ReadFrom(SnapshotReader* reader,
                             intptr_t object_id,
                             intptr_t tags,
                             Snapshot::Kind kind) {
   ASSERT(reader != NULL);
 
   // Read in the HexCString representation of the bigint.
   intptr_t len = reader->ReadIntptrValue();
   char* str = reinterpret_cast<char*>(ZoneAllocator(len + 1));
   str[len] = '\0';
-  for (intptr_t i = 0; i < len; i++) {
-    str[i] = reader->Read<uint8_t>();
-  }
+  reader->ReadBytes(reinterpret_cast<uint8_t*>(str), len);
 
   // Create a Bigint object from HexCString.
   Bigint& obj = Bigint::ZoneHandle(
       reader->isolate(),
       (kind == Snapshot::kFull) ? reader->NewBigint(str) :
                                   BigintOperations::FromHexCString(str));
 
   // If it is a canonical constant make it one.
   if ((kind != Snapshot::kFull) && RawObject::IsCanonical(tags)) {
     obj ^= obj.Canonicalize();
@@ skipping 148 matching lines @@
   intptr_t hash = reader->ReadSmiValue();
   OneByteString& str_obj = OneByteString::ZoneHandle(reader->isolate(),
                                                      OneByteString::null());
 
   if (kind == Snapshot::kFull) {
     ASSERT(reader->isolate()->no_gc_scope_depth() != 0);
     RawOneByteString* obj = reader->NewOneByteString(len);
     str_obj = obj;
     str_obj.set_tags(tags);
     obj->ptr()->hash_ = Smi::New(hash);
-    uint8_t* raw_ptr = (len > 0) ? str_obj.CharAddr(0) : NULL;
-    for (intptr_t i = 0; i < len; i++) {
-      ASSERT(str_obj.CharAddr(i) == raw_ptr);  // Will trigger assertions.
-      *raw_ptr = reader->Read<uint8_t>();
-      raw_ptr += 1;
+    if (len > 0) {
+      uint8_t* raw_ptr = str_obj.CharAddr(0);
+      reader->ReadBytes(raw_ptr, len);
     }
     ASSERT((hash == 0) || (String::Hash(str_obj, 0, str_obj.Length()) == hash));
   } else {
     ReadFromImpl<OneByteString, uint8_t>(reader, &str_obj, len, tags);
   }
   reader->AddBackwardReference(object_id, &str_obj);
   return str_obj.raw();
 }
 
 
@@ skipping 999 matching lines @@
   writer->Write<RawObject*>(ptr()->num_bracket_expressions_);
   writer->WriteObject(ptr()->pattern_);
   writer->WriteIntptrValue(ptr()->type_);
   writer->WriteIntptrValue(ptr()->flags_);
 
   // Do not write out the data part which is native.
 }
 
 
 }  // namespace dart