Fuse compare with branch at graph building time.

runtime/vm/il_printer.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/il_printer.h"
 
 #include "vm/intermediate_language.h"
 #include "vm/os.h"
 
 namespace dart {
@@ skipping 425 matching lines @@
   f->Print("    %s ", DebugName());
   exception()->PrintTo(f);
   f->Print(", ");
   stack_trace()->PrintTo(f);
 }
 
 
 void BranchInstr::PrintTo(BufferFormatter* f) const {
   f->Print("    %s ", DebugName());
   f->Print("if ");
-  if (is_fused_with_comparison()) {
-    if (is_negated()) f->Print(" not ");
-    fused_with_comparison_->PrintTo(f);
-  } else {
-    value()->PrintTo(f);
-  }
+  left()->PrintTo(f);
+  f-> Print(" %s ", Token::Str(kind()));
+  right()->PrintTo(f);
 
   f->Print(" goto (%d, %d)",
             true_successor()->block_id(),
             false_successor()->block_id());
+  if (HasICData()) {
+    PrintICData(f, *ic_data());
+  }
 }
 
 
 void ParallelMoveInstr::PrintTo(BufferFormatter* f) const {
   f->Print("    %s ", DebugName());
   for (intptr_t i = 0; i < moves_.length(); i++) {
     if (i != 0) f->Print(", ");
     f->Print("%s = %s", moves_[i].dest().Name(), moves_[i].src().Name());
   }
 }
@@ skipping 221 matching lines @@
   f->Print("_ %s ", DebugName());
   exception()->PrintTo(f);
   f->Print(", ");
   stack_trace()->PrintTo(f);
 }
 
 
 void BranchInstr::PrintToVisualizer(BufferFormatter* f) const {
   f->Print("_ %s ", DebugName());
   f->Print("if ");
-  value()->PrintTo(f);
+  left()->PrintTo(f);
+  f-> Print(" %s ", Token::Str(kind()));
+  right()->PrintTo(f);
   f->Print(" goto (B%d, B%d)",
             true_successor()->block_id(),
             false_successor()->block_id());
 }
 
 
 void ParallelMoveInstr::PrintToVisualizer(BufferFormatter* f) const {
   UNIMPLEMENTED();
 }
 
 
 void Environment::PrintTo(BufferFormatter* f) const {
   f->Print(" env={ ");
   for (intptr_t i = 0; i < values_.length(); ++i) {
     if (i > 0) f->Print(", ");
     values_[i]->PrintTo(f);
     if ((i < locations_.length()) && !locations_[i].IsInvalid()) {
       f->Print(" [%s]", locations_[i].Name());
     }
   }
   f->Print(" }");
 }
 
 }  // namespace dart