dart2js cps: Introduce GetStatic/SetStatic.

pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart

Index: pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
diff --git a/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart b/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
index 32974971161c87d9dd51d66ebb195a8843a92a00..18c323eef24d3e045060bc3848e792cca0a8051a 100644
--- a/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
+++ b/pkg/compiler/lib/src/cps_ir/cps_ir_builder.dart
@@ -1085,17 +1085,13 @@ abstract class IrBuilder {
   /// Create a read access of the static [field].
   ir.Primitive buildStaticFieldGet(FieldElement field,
                                    {SourceInformation sourceInformation}) {
-    Selector selector = new Selector.getter(field.name, field.library);
-    // TODO(karlklose,sigurdm): build different nodes for getters.
-    return _buildInvokeStatic(
-        field, selector, const <ir.Primitive>[], sourceInformation);
+    return addPrimitive(new ir.GetStatic(field, sourceInformation));
   }
 
   /// Create a getter invocation of the static [getter].
   ir.Primitive buildStaticGetterGet(MethodElement getter,
                                     {SourceInformation sourceInformation}) {
     Selector selector = new Selector.getter(getter.name, getter.library);
-    // TODO(karlklose,sigurdm): build different nodes for getters.
     return _buildInvokeStatic(
         getter, selector, const <ir.Primitive>[], sourceInformation);
   }
@@ -1104,21 +1100,14 @@ abstract class IrBuilder {
   /// [function].
   ir.Primitive buildStaticFunctionGet(MethodElement function,
                                       {SourceInformation sourceInformation}) {
-    Selector selector =
-        new Selector.getter(function.name, function.library);
-    // TODO(karlklose,sigurdm): build different nodes for getters.
-    return _buildInvokeStatic(
-        function, selector, const <ir.Primitive>[], sourceInformation);
+    return addPrimitive(new ir.GetStatic(function, sourceInformation));
   }
 
   /// Create a write access to the static [field] with the [value].
   ir.Primitive buildStaticFieldSet(FieldElement field,
                                    ir.Primitive value,
                                    {SourceInformation sourceInformation}) {
-    Selector selector = new Selector.setter(field.name, field.library);
-    // TODO(karlklose,sigurdm): build different nodes for setters.
-    _buildInvokeStatic(
-        field, selector, <ir.Primitive>[value], sourceInformation);
+    add(new ir.SetStatic(field, value, sourceInformation));
     return value;
   }
 
@@ -1127,7 +1116,6 @@ abstract class IrBuilder {
                                     ir.Primitive value,
                                     {SourceInformation sourceInformation}) {
     Selector selector = new Selector.setter(setter.name, setter.library);
-    // TODO(karlklose,sigurdm): build different nodes for setters.
     _buildInvokeStatic(
         setter, selector, <ir.Primitive>[value], sourceInformation);
     return value;