LOOP COUNT

General Compiler Directive: Specifies the iterations (count) for a DO loop.

Syntax

cDEC$ LOOP COUNT (n1[,n2]...)

cDEC$ LOOP COUNT= n1[,n2]...

cDEC$ LOOP COUNT MAX(n1), MIN(n1), AVG(n1)

cDEC$ LOOP COUNT MAX=n1, MIN=n1, AVG=n1

c	Is one of the following: C (or c), !, or *. (See Syntax Rules for Compiler Directives.)
n1, n2	Is a non-negative integer constant.

The value of the loop count affects heuristics used in software pipelining, vectorization, and loop-transformations.

Argument Form	Description
`n1` [, `n2`]	Indicates that the next DO loop will iterate `n1`, `n2`, or some other number of times.
MAX, MIN, and AVG	Indicates that the next DO loop has the specified maximum, minimum, and average number (`n1`) of iterations.

Consider the following:

cDEC$ LOOP COUNT (10000)

do i =1,m

b(i) = a(i) +1 ! This is likely to enable the loop to get software-pipelined

enddo

Note that you can specify more than one LOOP COUNT directive for a DO loop. For example, the following directives are valid:

!DEC$ LOOP COUNT (10, 20, 30)

!DEC$ LOOP COUNT MAX=100, MIN=3, AVG=17

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