aligned Clause

| OPENMP API Specification: "Version 5.2 -- GIT rev 95b2e3a44"

5.11 aligned Clause


Name: aligned	Properties: data-environment attribute, post-modiﬁed

Arguments


Name	Type	Properties

list	list of variable list item type	default

Modiﬁers


Name	Modiﬁes	Type	Properties

alignment	list	OpenMP integer expression	positive, region invariant, ultimate, unique

Directives

declare simd, simd

Semantics

The aligned clause declares that the object to which each list item points is aligned to the number of bytes expressed in alignment.

The aligned clause declares that the target of each list item is aligned to the number of bytes expressed in alignment.

The alignment modiﬁer speciﬁes the alignment that the program ensures related to the list items. If the alignment modiﬁer is not speciﬁed, implementation-deﬁned default alignments for SIMD instructions on the target platforms are assumed.

Restrictions

Restrictions to the aligned clause are as follows:

The type of list items must be array or pointer.

The type of list items must be array, pointer, reference to array, or reference to pointer.

Each list item must have C_PTR or Cray pointer type or have the POINTER or ALLOCATABLE attribute. Cray pointer support has been deprecated. If a list item has the ALLOCATABLE attribute, the allocation status must be allocated. If a list item has the POINTER attribute, the association status must be associated. If the type of a list item is either C_PTR or Cray pointer, it must be deﬁned. Cray pointer support has been deprecated.

Cross References

declare simd directive, see Section 7.7
simd directive, see Section 10.4

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