Support --use-kernel in memory_compiler

tests/compiler/dart2js/kernel/loops_test.dart

Index: tests/compiler/dart2js/kernel/loops_test.dart
diff --git a/tests/compiler/dart2js/kernel/loops_test.dart b/tests/compiler/dart2js/kernel/loops_test.dart
index 13a75e759e82f50e6ae6d5a719e7ee500c2c631b..45570a774215ac635693a4373343aa9ffa7d07c2 100644
--- a/tests/compiler/dart2js/kernel/loops_test.dart
+++ b/tests/compiler/dart2js/kernel/loops_test.dart
@@ -67,7 +67,7 @@ main() {
     // This is the same test as above, but by enabling type inference
     // we allow the compiler to detect that it can iterate over the
     // array using indexing.
-    return check(code, disableTypeInference: false);
+    return check(code, disableTypeInference: false, useKernelInSsa: true);
   });
 
   test('for-in loop top-level variable', () {
@@ -80,7 +80,7 @@ main() {
   }
   return sum;
 }''';
-    return check(code, disableTypeInference: false);
+    return check(code, disableTypeInference: false, useKernelInSsa: true);
   });
 
   test('for loop with break to label', () {
@@ -97,6 +97,6 @@ main() {
   }
   return sum;
 }''';
-    return check(code, disableTypeInference: false);
+    return check(code, disableTypeInference: false, useKernelInSsa: true);
   });
 }