9.1.1.10 Interprocedural Optimization With -xipo

This new f95 compiler flag, introduced with the release of Forte Developer 6 update 2, performs whole-program optimizations by invoking an interprocedural analysis pass. Unlike -xcrossfile, -xipo optimizes across all object files at the link step and is not limited to just the source files on the compile command.

-xipo is particularly useful when compiling and linking large multi-file applications. Object files compiled with -xipo have analysis information saved within them. This enables interprocedural analysis across source and pre-compiled program files.

For details on how to use interprocedural analysis effectively, see the Fortran User’s Guide.