/OPTIMIZE=ALL (D)

  /NOOPTIMIZE

  Controls the optimization  performed  by  the  compiler.   You  can
  select the following options:

  For OpenVMS VAX Systems:

  Option                     Description
  -------------------------- -----------------------------------------------
  ALL                        Perform all optimizations.  This is equivalent
                             to /OPTIMIZE and is the default.

  [NO]COMMON_SUBEXPRESSIONS  [Do not] Eliminate common subexpressions.

  [NO]DISJOINT               [Do not] Place local variables in multiple
                             registers.

  [NO]INLINE                 [Do not] Automatically provide inline
                             expansion of procedures to provide optimized
                             code.

  [NO]INVARIANT              [Do not] Remove invariant expressions from
                             loops.

  [NO]LOCALS_IN_REGISTERS    [Do not] Place local variables in registers.

  [NO]PEEPHOLE               [Do not] Perform pattern replacement on the
                             generated machine code.

  [NO]RESULT_INCORPORATION   [Do not] Collapse binary arithmetic operations
                             into 3-operand intructions.

  For OpenVMS AXP Systems:

  Option                Description
  --------------------- ---------------------------------------------------
  LEVEL=n               Specifies the level of optimization based on a
                        value from 0 to 5.  Zero (0) specifies no optimiza-
                        tion and is equivalent to /NOOPTIMIZE.  The default
                        value for LEVEL is 4.

  UNROLL=n              Specifies the number of times to unroll loops, based
                        on a value from 1 to 16.  If the /UNROLL option is
                        not specified, a default unroll amount of 4 is used.
                        /LEVEL must be specified as 3 or greater to enable
                        loop unrolling.

  INLINE=NONE           Suppresses all inlining.

  INLINE=MANUAL         Inlines the calls you explicitly request to be
                        inlined.

  INLINE=AUTOMATIC      Inlines the calls in the MANUAL category plus any
                        additional calls that improve performance.

  INLINE=ALL            Inlines every call that is possible while still
                        generating correct code.

  Note that the value of n in  LEVEL=n  turns  on  the  INLINE=option
  qualifier as follows

         Level           Inlining mode
         -----           -------------
           0              none
           1              none
           2              manual
           3              manual
           4              automatic

  For levels other  than  LEVEL=0,  the  INLINE=option  qualifier  is
  honored if explicitly given on the command line.