Remove the is_used_ field from BindInstr.

runtime/vm/flow_graph_builder.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/flow_graph_builder.h"
 
 #include "vm/ast_printer.h"
 #include "vm/code_descriptors.h"
 #include "vm/dart_entry.h"
 #include "vm/flags.h"
@@ skipping 49 matching lines @@
     exit()->set_next(other_fragment.entry());
     exit_ = other_fragment.exit();
   }
   temp_index_ = other_fragment.temp_index();
 }
 
 
 Value* EffectGraphVisitor::Bind(Computation* computation) {
   ASSERT(is_open());
   DeallocateTempIndex(computation->InputCount());
-  BindInstr* bind_instr = new BindInstr(BindInstr::kUsed, computation);
+  BindInstr* bind_instr = new BindInstr(Definition::kValue, computation);
   bind_instr->set_temp_index(AllocateTempIndex());
   if (is_empty()) {
     entry_ = bind_instr;
   } else {
     exit()->set_next(bind_instr);
   }
   exit_ = bind_instr;
   return new Value(bind_instr);
 }
 
 
 void EffectGraphVisitor::Do(Computation* computation) {
   ASSERT(is_open());
   DeallocateTempIndex(computation->InputCount());
-  BindInstr* do_instr = new BindInstr(BindInstr::kUnused, computation);
+  BindInstr* do_instr = new BindInstr(Definition::kEffect, computation);
   if (is_empty()) {
     entry_ = do_instr;
   } else {
     exit()->set_next(do_instr);
   }
   exit_ = do_instr;
 }
 
 
 void EffectGraphVisitor::AddInstruction(Instruction* instruction) {
@@ skipping 2443 matching lines @@
   intptr_t len = OS::SNPrint(NULL, 0, kFormat, function_name, reason) + 1;
   char* chars = Isolate::Current()->current_zone()->Alloc<char>(len);
   OS::SNPrint(chars, len, kFormat, function_name, reason);
   const Error& error = Error::Handle(
       LanguageError::New(String::Handle(String::New(chars))));
   Isolate::Current()->long_jump_base()->Jump(1, error);
 }
 
 
 }  // namespace dart