To reproduce:

1. Download attached project "Dbase_Test.rar" and open in Unity
2. Open "0" scene
3. Build for iOS
4. Deploy the Xcode project to the iOS device
5. Check Xcode Memory Info

Expected results: Memory will stay fixed every time when invoking typeof(float[]).IsEnum
Actual results: Memory will increase every time when invoking typeof(float[]).IsEnum

Notes:
- This issue does not reproduce on Windows Standalone, macOS Standalone, and Android (both mono and il2cpp)
- If You change typeof(float[]).IsEnum to typeof(float).IsEnum Memory will not increase

Tested with:
- iPhone SE, iOS: 11.4.1 - Reproduced
- iPhone 7s Plus, iOS: 12.0 - Reproduced
- iPhone X, iOS: 12.1 - Reproduced

Reproduced on Unity 2017.4.0f1, 2017.4.14f1, 2018.1.9f2, 2018.2.15f1, 2018.3.0b9 and 2019.1.0a8