Implement SmiToInt and DoubleToInt.

runtime/vm/intermediate_language.cc

Index: runtime/vm/intermediate_language.cc
===================================================================
--- runtime/vm/intermediate_language.cc	(revision 13385)
+++ runtime/vm/intermediate_language.cc	(working copy)
@@ -1298,6 +1298,16 @@
 }
 
 
+RawAbstractType* IntegerToIntegerInstr::CompileType() const {
+  return Type::IntType();
+}
+
+
+RawAbstractType* DoubleToIntegerInstr::CompileType() const {
+  return Type::IntType();
+}
+
+
 RawAbstractType* CheckClassInstr::CompileType() const {
   return AbstractType::null();
 }
@@ -1863,6 +1873,24 @@
 }
 
 
+LocationSummary* IntegerToIntegerInstr::MakeLocationSummary() const {
+  const intptr_t kNumInputs = 1;
+  const intptr_t kNumTemps = 0;
+  LocationSummary* locs =
+      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+  locs->set_in(0, Location::RequiresRegister());
+  locs->set_out(Location::SameAsFirstInput());
+  return locs;
+}
+
+
+void IntegerToIntegerInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  Register value = locs()->in(0).reg();
+  Register result = locs()->out().reg();
+  ASSERT(value == result);
+}
+
+
 Environment* Environment::From(const GrowableArray<Definition*>& definitions,
                                intptr_t fixed_parameter_count,
                                const Function& function) {