The IPA compile step

The IPA compile step is similar to a regular compilation.

You invoke the IPA compile step for each source file in your application by specifying the IPA(NOLINK) compiler option or by specifying -Wc,IPA or -WI -c in z/OS® UNIX System Services. The output of the IPA compile step is an object file which contains IPA information, or both IPA information and conventional object code and data. The IPA information is an encoded form of the compilation unit with additional IPA-specific compile-time optimizations.

Figure 1 shows the flow of IPA compile step processing.

The same environments that support a regular compilation also support the IPA compile step.