Downward inference

test/dart_codegen/expect/async/future_impl.dart

Index: test/dart_codegen/expect/async/future_impl.dart
diff --git a/test/dart_codegen/expect/async/future_impl.dart b/test/dart_codegen/expect/async/future_impl.dart
index 112287c3b3849129deb886c5217db629ef304971..4f40c58d0018f50d2dde66e68875544c02bbffc2 100644
--- a/test/dart_codegen/expect/async/future_impl.dart
+++ b/test/dart_codegen/expect/async/future_impl.dart
@@ -58,14 +58,14 @@ future._completeError(error, stackTrace);
  bool get hasErrorTest => (state == STATE_CATCHERROR_TEST);
  bool get handlesComplete => (state == STATE_WHENCOMPLETE);
  _FutureOnValue get _onValue {
-assert (handlesValue); return DEVC$RT.cast(callback, Function, __t14, "ImplicitCast", """line 112, column 12 of dart:async/future_impl.dart: """, callback is __t14, true);
+assert (handlesValue); return DEVC$RT.cast(callback, Function, __t12, "ImplicitCast", """line 112, column 12 of dart:async/future_impl.dart: """, callback is __t12, true);
 }
  Function get _onError => errorCallback;
  _FutureErrorTest get _errorTest {
-assert (hasErrorTest); return DEVC$RT.cast(callback, Function, __t16, "CompositeCast", """line 117, column 12 of dart:async/future_impl.dart: """, callback is __t16, false);
+assert (hasErrorTest); return DEVC$RT.cast(callback, Function, __t14, "CompositeCast", """line 117, column 12 of dart:async/future_impl.dart: """, callback is __t14, false);
 }
  _FutureAction get _whenCompleteAction {
-assert (handlesComplete); return DEVC$RT.cast(callback, Function, __t18, "ImplicitCast", """line 121, column 12 of dart:async/future_impl.dart: """, callback is __t18, true);
+assert (handlesComplete); return DEVC$RT.cast(callback, Function, __t16, "ImplicitCast", """line 121, column 12 of dart:async/future_impl.dart: """, callback is __t16, true);
 }
 }
  class _Future<T> implements Future<T> {static const int _INCOMPLETE = 0;
@@ -101,13 +101,13 @@ Function onError}
 ) {
 _Future result = new _Future();
  if (!identical(result._zone, _ROOT_ZONE)) {
-f = ((__x22) => DEVC$RT.wrap((dynamic f(dynamic __u19)) {
+f = ((__x20) => DEVC$RT.wrap((dynamic f(dynamic __u17)) {
 dynamic c(dynamic x0) => f(x0);
  return f == null ? null : c;
 }
-, __x22, __t14, DEVC$RT.type((__t20<T> _) {
+, __x20, __t12, DEVC$RT.type((__t18<T> _) {
 }
-), "Wrap", """line 208, column 11 of dart:async/future_impl.dart: """, __x22 is __t20<T>))(result._zone.registerUnaryCallback(f));
+), "Wrap", """line 208, column 11 of dart:async/future_impl.dart: """, __x20 is __t18<T>))(result._zone.registerUnaryCallback(f));
  if (onError != null) {
 onError = _registerErrorHandler(onError, result._zone);
 }
@@ -121,11 +121,11 @@ bool test(error)}
 _Future result = new _Future();
  if (!identical(result._zone, _ROOT_ZONE)) {
 onError = _registerErrorHandler(onError, result._zone);
- if (test != null) test = ((__x25) => DEVC$RT.wrap((dynamic f(dynamic __u24)) {
-dynamic c(dynamic x0) => ((__x23) => DEVC$RT.cast(__x23, dynamic, bool, "CastResult", """line 221, column 32 of dart:async/future_impl.dart: """, __x23 is bool, true))(f(x0));
+ if (test != null) test = ((__x23) => DEVC$RT.wrap((dynamic f(dynamic __u22)) {
+dynamic c(dynamic x0) => ((__x21) => DEVC$RT.cast(__x21, dynamic, bool, "CastResult", """line 221, column 32 of dart:async/future_impl.dart: """, __x21 is bool, true))(f(x0));
  return f == null ? null : c;
 }
-, __x25, __t14, __t16, "Wrap", """line 221, column 32 of dart:async/future_impl.dart: """, __x25 is __t16))(result._zone.registerUnaryCallback(test));
+, __x23, __t12, __t14, "Wrap", """line 221, column 32 of dart:async/future_impl.dart: """, __x23 is __t14))(result._zone.registerUnaryCallback(test));
 }
  _addListener(new _FutureListener.catchError(result, onError, test));
  return result;
@@ -142,11 +142,7 @@ action = result._zone.registerCallback(action);
 }
 ), "CompositeCast", """line 233, column 12 of dart:async/future_impl.dart: """, result is Future<T>, false);
 }
- Stream<T> asStream() => ((__x26) => DEVC$RT.cast(__x26, DEVC$RT.type((Stream<dynamic> _) {
-}
-), DEVC$RT.type((Stream<T> _) {
-}
-), "InferableAllocation", """line 236, column 27 of dart:async/future_impl.dart: """, __x26 is Stream<T>, false))(new Stream.fromFuture(this));
+ Stream<T> asStream() => new Stream<T>.fromFuture(this);
  void _markPendingCompletion() {
 if (!_mayComplete) throw new StateError("Future already completed");
  _state = _PENDING_COMPLETE;
@@ -331,7 +327,7 @@ AsyncError asyncError = source._error;
  if (listener.hasErrorTest) {
   _FutureErrorTest test = listener._errorTest;
    try {
-    matchesTest = ((__x27) => DEVC$RT.cast(__x27, dynamic, bool, "DynamicCast", """line 499, column 29 of dart:async/future_impl.dart: """, __x27 is bool, true))(zone.runUnary(test, asyncError.error));
+    matchesTest = ((__x24) => DEVC$RT.cast(__x24, dynamic, bool, "DynamicCast", """line 499, column 29 of dart:async/future_impl.dart: """, __x24 is bool, true))(zone.runUnary(test, asyncError.error));
     }
    catch (e, s) {
     listenerValueOrError = identical(asyncError.error, e) ? asyncError : new AsyncError(e, s);
@@ -345,7 +341,7 @@ AsyncError asyncError = source._error;
       listenerValueOrError = zone.runBinary(errorCallback, asyncError.error, asyncError.stackTrace);
       }
      else {
-      listenerValueOrError = zone.runUnary(DEVC$RT.cast(errorCallback, Function, __t14, "ImplicitCast", """line 515, column 54 of dart:async/future_impl.dart: """, errorCallback is __t14, true), asyncError.error);
+      listenerValueOrError = zone.runUnary(DEVC$RT.cast(errorCallback, Function, __t12, "ImplicitCast", """line 515, column 54 of dart:async/future_impl.dart: """, errorCallback is __t12, true), asyncError.error);
       }
     }
    catch (e, s) {
@@ -478,7 +474,7 @@ timer.cancel();
  return result;
 }
 }
- typedef dynamic __t14(dynamic __u15);
- typedef bool __t16(dynamic __u17);
- typedef dynamic __t18();
- typedef dynamic __t20<T>(T __u21);
+ typedef dynamic __t12(dynamic __u13);
+ typedef bool __t14(dynamic __u15);
+ typedef dynamic __t16();
+ typedef dynamic __t18<T>(T __u19);