Convert diamond shaped control flow into a single conditional instruction.

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"
 #include "vm/parser.h"
 
@@ skipping 411 matching lines @@
 void StoreInstanceFieldInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s {%"Pd"}, ",
            String::Handle(field().name()).ToCString(),
            field().Offset());
   instance()->PrintTo(f);
   f->Print(", ");
   value()->PrintTo(f);
 }
 
 
+void IfThenElseInstr::PrintOperandsTo(BufferFormatter* f) const {
+  left()->PrintTo(f);
+  f->Print(" %s ", Token::Str(kind_));
+  right()->PrintTo(f);
+  f->Print(" ? %"Pd" : %"Pd,
+           if_true_,
+           if_false_);
+}
+
+
 void LoadStaticFieldInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s", String::Handle(field().name()).ToCString());
 }
 
 
 void StoreStaticFieldInstr::PrintOperandsTo(BufferFormatter* f) const {
   f->Print("%s, ", String::Handle(field().name()).ToCString());
   value()->PrintTo(f);
 }
 
@@ skipping 324 matching lines @@
       f->Print(" [");
       locations_[i].PrintTo(f);
       f->Print("]");
     }
   }
   f->Print(" }");
   if (outer_ != NULL) outer_->PrintTo(f);
 }
 
 }  // namespace dart