kernel->ssa: implement assert statements

pkg/compiler/lib/src/options.dart

Index: pkg/compiler/lib/src/options.dart
diff --git a/pkg/compiler/lib/src/options.dart b/pkg/compiler/lib/src/options.dart
index 0b5437069e0b5d552d916e39a1ad27d53157412a..65ea1b809498d2cfa8be8221ebac6ee7a77dfb06 100644
--- a/pkg/compiler/lib/src/options.dart
+++ b/pkg/compiler/lib/src/options.dart
@@ -197,10 +197,10 @@ class CompilerOptions implements DiagnosticOptions, ParserOptions {
   /// The location of the serialized data from resolution.
   final Uri resolutionOutput;
 
-  // If `true`, sources are resolved and serialized.
+  /// If `true`, sources are resolved and serialized.
   final bool resolveOnly;
 
-  // If `true`, sources are only available from serialized data.
+  /// If `true`, sources are only available from serialized data.
   final bool compileOnly;
 
   /// URI where the compiler should generate the output source map file.