Use -O2 optimization for DevTools wasm build. (#8814)

flutter · Jan 28, 2025 · 80bbb54 · 80bbb54
1 parent 80b0762
commit 80bbb54
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diff --git a/tool/build_release.sh b/tool/build_release.sh
@@ -82,6 +82,8 @@ flutter pub get
 flutter build web \
   --source-maps \
   --wasm \
+  -O2 \
+  --dart2js-optimization=O4 \
   --pwa-strategy=offline-first \
   --release \
   --no-tree-shake-icons

diff --git a/tool/lib/commands/build.dart b/tool/lib/commands/build.dart
@@ -108,7 +108,13 @@ class BuildCommand extends Command {
           ] else ...[
             // Do not minify stack traces in debug mode.
             if (buildMode == 'debug') '--dart2js-optimization=O1',
-            if (buildMode != 'debug') '--$buildMode',
+            if (buildMode != 'debug') ...[
+              '--$buildMode',
+              // Use -O2 optimization by default (sound dart) but override for
+              // dart2js with -O4 (it's too slow otherwise).
+              '-O2',
+              '--dart2js-optimization=O4',
+            ],
           ],
           '--pwa-strategy=offline-first',
           '--no-tree-shake-icons',