[LOCAL] Fix performance issues in Hermes when Debug

Author: Riccardo Cipolleschi

packages/react-native/ReactAndroid/hermes-engine/build.gradle

@@ -181,6 +181,8 @@ android {
                     // This has the (unlucky) side effect of letting AGP call the build
                     // tasks `configureCMakeRelease` while is actually building the debug flavor.
                     arguments "-DCMAKE_BUILD_TYPE=Release"
+                    // Adding -O3 to patch the issue here: https://github.com/android/ndk/issues/1740#issuecomment-1198438260
+                    cppFlags "-O3"
                 }
             }
         }