Fuse comparisons that are used by branches together.

runtime/vm/flow_graph_compiler.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_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/debugger.h"
 #include "vm/il_printer.h"
@@ skipping 19 matching lines @@
     bool is_optimizing)
     : assembler_(assembler),
       parsed_function_(parsed_function),
       block_order_(block_order),
       current_block_(NULL),
       exception_handlers_list_(NULL),
       pc_descriptors_list_(NULL),
       stackmap_builder_(NULL),
       block_info_(block_order.length()),
       deopt_stubs_(),
-      is_optimizing_(is_optimizing) {
+      is_optimizing_(is_optimizing),
+      true_value_(Bool::ZoneHandle(Bool::True())),
+      false_value_(Bool::ZoneHandle(Bool::False())) {
   ASSERT(assembler != NULL);
 }
 
 
 FlowGraphCompiler::~FlowGraphCompiler() {
   // BlockInfos are zone-allocated, so their destructors are not called.
   // Verify the labels explicitly here.
   for (int i = 0; i < block_info_.length(); ++i) {
     ASSERT(!block_info_[i]->label.IsLinked());
     ASSERT(!block_info_[i]->label.HasNear());
@@ skipping 333 matching lines @@
                        function_name,
                        kNumArguments,
                        Array::ZoneHandle(),  // No optional arguments.
                        kNumArgsChecked);
 }
 
 
 
 
 }  // namespace dart