VM: Remove unnecessary field use_kind from IL instructions.

runtime/vm/flow_graph_compiler_arm64.cc

 // Copyright (c) 2014, 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_ARM64.
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 699 matching lines @@
   __ Pop(R1);
   __ Pop(R2);
 }
 
 
 void FlowGraphCompiler::EmitInstructionEpilogue(Instruction* instr) {
   if (is_optimizing()) {
     return;
   }
   Definition* defn = instr->AsDefinition();
-  if ((defn != NULL) && defn->is_used()) {
+  if ((defn != NULL) && defn->HasTemp()) {
     __ Push(defn->locs()->out(0).reg());
   }
 }
 
 
 // Input parameters:
 //   R4: arguments descriptor array.
 void FlowGraphCompiler::CopyParameters() {
   __ Comment("Copy parameters");
   const Function& function = parsed_function().function();
@@ skipping 1046 matching lines @@
 void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
   UNIMPLEMENTED();
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64