In general, of course, if both compilers generate debug symbols recognized by VTune. If you have a specific question, give more details. For example, I've seen better results with mixed gfortran and gcc on Windows when the entire build was done with a single gfortran command. But that's well outside usual usage.
Language Support Analyze and tune your applications in your own environment with support for the most commonly used programming languages, including Microsoft C# and Microsoft .NET 2.0, Compaq Visual Fortran* and Java*.