Cleanup: Replace LoadInstanceFieldInstr with LoadVMFieldInstr.

runtime/vm/intermediate_language_x64.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/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 948 matching lines @@
       const Object& constant = locs()->in(2).constant();
       __ StoreObject(field_address, constant);
     } else {
       Register value = locs()->in(2).reg();
       __ StoreIntoObjectNoBarrier(array, field_address, value);
     }
   }
 }
 
 
-LocationSummary* LoadInstanceFieldInstr::MakeLocationSummary() const {
-  // TODO(fschneider): For this instruction the input register may be
-  // reused for the result (but is not required to) because the input
-  // is not used after the result is defined.  We should consider adding
-  // this information to the input policy.
-  return LocationSummary::Make(1,
-                               Location::RequiresRegister(),
-                               LocationSummary::kNoCall);
-}
-
-
-void LoadInstanceFieldInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  Register instance_reg = locs()->in(0).reg();
-  Register result_reg = locs()->out().reg();
-  __ movq(result_reg, FieldAddress(instance_reg, field().Offset()));
-}
-
-
 LocationSummary* StoreInstanceFieldInstr::MakeLocationSummary() const {
   const intptr_t kNumInputs = 2;
   const intptr_t num_temps = 0;
   LocationSummary* summary =
       new LocationSummary(kNumInputs, num_temps, LocationSummary::kNoCall);
   summary->set_in(0, Location::RequiresRegister());
   summary->set_in(1,
       value()->NeedsStoreBuffer() ? Location::WritableRegister()
                                   : Location::RequiresRegister());
   return summary;
@@ skipping 1308 matching lines @@
     __ j(ABOVE_EQUAL, deopt);
   }
 }
 
 
 }  // namespace dart
 
 #undef __
 
 #endif  // defined TARGET_ARCH_X64