/ANNOTATIONS

    /ANNOTATIONS[=(option,...)]
    /NOANNOTATIONS (D)

 Controls whether or not the source listing file is annotated with
 indications of specific optimizations performed or, in some cases,
 not performed.  These annotations can be helpful in understanding
 the optimization process.

 Select one or more of the following /ANNOTATIONS qualifier options:

    ALL

       Selects all annotations.  This output can be quite verbose
       because it includes detailed output for all annotations.  For
       more concise output for each kind of annotation, use
       /ANNOTATIONS=(ALL,NODETAIL), or just /ANNOTATIONS with no
       qualifier options.

    [NO]CODE

       Annotates the machine-code listing with descriptions of
       special instructions used for prefetching, alignment, and so
       on.  The /MACHINE_CODE qualifier must also be specified for
       /ANNOTATION=CODE to have any visible effect.

    [NO]DETAIL

       Provides additional level of annotation detail, where
       available.

    [NO]FEEDBACK

       Indicates use of profile-directed feedback optimizations.
       Feedback optimizations are not implemented on OpenVMS
       systems, so this keyword has no visible effect.

    [NO]INLINING

       Indicates where code for a called procedure was expanded
       inline.

    [NO]LOOP_TRANSFORMS

       Indicates optimizations such as loop reordering and code
       hoisting.

    [NO]LOOP_UNROLLING

       Indicates where advanced loop nest optimizations have been
       applied to improve cache performance (unroll and jam, loop
       fusion, loop interchange, and so on).

    [NO]PREFETCHING

       Indicates where special instructions were used to reduce
       memory latency.

    [NO]SHRINKWRAPPING

       Indicates removal of code establishing routine context when
       it is not needed.

    [NO]SOFTWARE_PIPELINING

       Indicates where loops have been scheduled to hide functional
       unit latency.

    [NO]TAIL_CALLS

       Indicates an optimization where a call from routine A to B
       can be replaced by a jump.

    [NO]TAIL_RECURSION

       Indicates an optimization that eliminates unnecessary routine
       context for a recursive call.

    NONE

       Same as /NOANNOTATIONS.

The default is /NOANNOTATIONS.

Specifying /ANNOTATIONS with no keywords is the same as specifying
 /ANNOTATIONS=(ALL,NODETAIL).