Handle synthetic nodes use to throw exceptions

pkg/compiler/lib/src/js_backend/backend_impact.dart

Index: pkg/compiler/lib/src/js_backend/backend_impact.dart
diff --git a/pkg/compiler/lib/src/js_backend/backend_impact.dart b/pkg/compiler/lib/src/js_backend/backend_impact.dart
index b5b9e72fdef52ab41af1321a920a65dfe07bc438..0ee718f8494faa29e0ef4bec0600f270f602bcee 100644
--- a/pkg/compiler/lib/src/js_backend/backend_impact.dart
+++ b/pkg/compiler/lib/src/js_backend/backend_impact.dart
@@ -161,7 +161,9 @@ class BackendImpacts {
 
   BackendImpact get throwNoSuchMethod {
     return _throwNoSuchMethod ??= new BackendImpact(staticUses: [
-      helpers.throwNoSuchMethod
+      helpers.throwNoSuchMethod,
+      helpers.genericNoSuchMethod, // Used by kernel.

[Siggi Cherem (dart-lang), 2016/12/02 23:44:18]

should we make this conditional?

if (compiler.options.useKernel) ...add(x,y)

[sra1, 2016/12/03 00:12:38]

Done.

+      helpers.unresolvedConstructorError, // Used by kernel.
     ], otherImpacts: [
       // Also register the types of the arguments passed to this method.
       _needsList('Needed to encode the arguments for throw NoSuchMethodError.'),
@@ -427,8 +429,10 @@ class BackendImpacts {
   BackendImpact _malformedTypeCheck;
 
   BackendImpact get malformedTypeCheck {
-    return _malformedTypeCheck ??=
-        new BackendImpact(staticUses: [helpers.throwTypeError]);
+    return _malformedTypeCheck ??= new BackendImpact(staticUses: [
+      helpers.throwTypeError,
+      helpers.malformedTypeError, // Used by kernel.
+    ]);
   }
 
   BackendImpact _genericTypeCheck;