Implement kDoubleToDouble and kIntegerToDouble on ia32 and x64.

runtime/vm/flow_graph_optimizer.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_optimizer.h"
 
 #include "vm/flow_graph_builder.h"
 #include "vm/il_printer.h"
 #include "vm/object_store.h"
 
@@ skipping 370 matching lines @@
   if ((ic_data.NumberOfChecks() == 0) || !HasOneTarget(ic_data)) {
     // No type feedback collected.
     return;
   }
   Function& target = Function::Handle();
   GrowableArray<const Class*> classes;
   ic_data.GetCheckAt(0, &classes, &target);
   ASSERT(classes.length() == 1);
   MethodRecognizer::Kind recognized_kind =
       MethodRecognizer::RecognizeKind(target);
+
+  ObjectKind from_kind;
   if (recognized_kind == MethodRecognizer::kDoubleToDouble) {
-    // TODO(srdjan): Implement.
+    from_kind = kDouble;
+  } else if (recognized_kind == MethodRecognizer::kIntegerToDouble) {
+    from_kind = kSmi;
+  } else {
+    return;
   }
-  if (recognized_kind == MethodRecognizer::kIntegerToDouble) {
-    // TODO(srdjan): Implement.
+
+  if (classes[0]->id() != from_kind) {
+    return;
   }
+
+  ToDoubleComp* coerce = new ToDoubleComp(
+      comp->InputAt(0), from_kind, comp);
+  coerce->set_instr(comp->instr());
+  comp->instr()->replace_computation(coerce);
 }
 
 
 void FlowGraphOptimizer::VisitInstanceCall(InstanceCallComp* comp) {
   if (comp->HasICData()) {
     const String& function_name = comp->function_name();
     Token::Kind op_kind = Token::GetBinaryOp(function_name);
     if (op_kind != Token::kILLEGAL) {
       TryReplaceWithBinaryOp(comp, op_kind);
       return;
@@ skipping 107 matching lines @@
   instr->computation()->Accept(this);
 }
 
 
 void FlowGraphOptimizer::VisitBind(BindInstr* instr) {
   instr->computation()->Accept(this);
 }
 
 
 }  // namespace dart