Improve message when saving compilation training data. (#26084)

packages/flutter_tools/lib/src/resident_runner.dart

@@ -602,8 +602,12 @@ abstract class ResidentRunner {
     for (FlutterDevice device in flutterDevices) {
       for (FlutterView view in device.views) {
         final int index = device.views.indexOf(view);
-        printStatus('Saving compilation training file for '
-            '${device.device.name}${index == 0 ? '' :'/Isolate$index'}...');
+        final File outputFile = fs.currentDirectory
+            .childFile('compilation${index == 0 ? '' : index}.txt');
+
+        printStatus('Saving compilation training data '
+            'for ${device.device.name}${index == 0 ? '' :'/Isolate$index'} '
+            'to ${fs.path.relative(outputFile.path)}...');
 
         List<int> buffer;
         try {
@@ -614,12 +618,8 @@ abstract class ResidentRunner {
           continue;
         }
 
-        final File outputFile = fs.currentDirectory
-          .childFile('compilation${index == 0 ? '' : index}.txt');
-
         outputFile.parent.createSync(recursive: true);
         outputFile.writeAsBytesSync(buffer);
-        printStatus('Compilation training written to ${fs.path.relative(outputFile.path)}.');
       }
     }
   }

packages/flutter_tools/lib/src/run_cold.dart

@@ -147,7 +147,7 @@ class ColdRunner extends ResidentRunner {
     }
     if (haveDetails && !details) {
       if (saveCompilationTrace) {
-        printStatus('Runtime compilation trace will be saved when flutter run quits...');
+        printStatus('Compilation training data will be saved when flutter run quits...');
       }
       printStatus('For a more detailed help message, press "h". To quit, press "q".');
     } else if (haveAnything) {