VM: Remove unnecessary field use_kind from IL instructions.

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/bit_vector.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
@@ skipping 25 matching lines @@
 DECLARE_FLAG(bool, throw_on_javascript_int_overflow);
 DECLARE_FLAG(bool, warn_on_javascript_compatibility);
 
 Definition::Definition()
     : range_(NULL),
       type_(NULL),
       temp_index_(-1),
       ssa_temp_index_(-1),
       input_use_list_(NULL),
       env_use_list_(NULL),
-      use_kind_(kValue),  // Phis and parameters rely on this default.
       constant_value_(Object::ZoneHandle(ConstantPropagator::Unknown())) {
 }
 
 
 Definition* Definition::OriginalDefinition() {
   Definition* defn = this;
   while (defn->IsRedefinition() || defn->IsAssertAssignable()) {
     if (defn->IsRedefinition()) {
       defn = defn->AsRedefinition()->value()->definition();
     } else {
@@ skipping 1339 matching lines @@
   if (result != NULL) {
     return result;
   }
 
   if ((op_kind() == Token::kMUL) &&
       (left()->definition() == right()->definition())) {
     MathUnaryInstr* math_unary =
         new MathUnaryInstr(MathUnaryInstr::kDoubleSquare,
                            new Value(left()->definition()),
                            DeoptimizationTarget());
-    flow_graph->InsertBefore(this, math_unary, env(), Definition::kValue);
+    flow_graph->InsertBefore(this, math_unary, env(), FlowGraph::kValue);
     return math_unary;
   }
 
   return this;
 }
 
 
 Definition* BinarySmiOpInstr::Canonicalize(FlowGraph* flow_graph) {
   Definition* result = NULL;
 
@@ skipping 237 matching lines @@
   if (!HasUses()) return NULL;
   // Fold away UnboxDouble(BoxDouble(v)).
   BoxDoubleInstr* box_defn = value()->definition()->AsBoxDouble();
   if (box_defn != NULL) {
     return box_defn->value()->definition();
   }
 
   ConstantInstr* c = value()->definition()->AsConstant();
   if ((c != NULL) && c->value().IsDouble()) {
     UnboxedConstantInstr* uc = new UnboxedConstantInstr(c->value());
-    flow_graph->InsertBefore(this, uc, NULL, Definition::kValue);
+    flow_graph->InsertBefore(this, uc, NULL, FlowGraph::kValue);
     return uc;
   }
 
   return this;
 }
 
 
 Definition* BoxFloat32x4Instr::Canonicalize(FlowGraph* flow_graph) {
   if (input_use_list() == NULL) {
     // Environments can accomodate any representation. No need to box.
@@ skipping 1749 matching lines @@
     case Token::kTRUNCDIV: return 0;
     case Token::kMOD: return 1;
     default: UNIMPLEMENTED(); return -1;
   }
 }
 
 
 #undef __
 
 }  // namespace dart