data_dependence_relation Struct Reference
#include <tree-data-ref.h>
Collaboration diagram for data_dependence_relation:
Data Fields | |
| struct data_reference * | a |
| struct data_reference * | b |
| tree | are_dependent |
| vec< subscript_p > | subscripts |
| vec< loop_p > | loop_nest |
| vec< lambda_vector > | dir_vects |
| vec< lambda_vector > | dist_vects |
| unsigned | inner_loop |
| bool | reversed_p |
| bool | affine_p |
| bool | self_reference_p |
Detailed Description
A data_dependence_relation represents a relation between two data_references A and B.
Field Documentation
| struct data_reference* data_dependence_relation::a |
| bool data_dependence_relation::affine_p |
When the dependence relation is affine, it can be represented by
a distance vector.
| tree data_dependence_relation::are_dependent |
A "yes/no/maybe" field for the dependence relation:
- when "ARE_DEPENDENT == NULL_TREE", there exist a dependence
relation between A and B, and the description of this relation
is given in the SUBSCRIPTS array,
- when "ARE_DEPENDENT == chrec_known", there is no dependence and
SUBSCRIPTS is empty,
- when "ARE_DEPENDENT == chrec_dont_know", there may be a dependence,
but the analyzer cannot be more specific.
| struct data_reference* data_dependence_relation::b |
| vec<lambda_vector> data_dependence_relation::dir_vects |
The classic direction vector.
| vec<lambda_vector> data_dependence_relation::dist_vects |
The classic distance vector.
| unsigned data_dependence_relation::inner_loop |
An index in loop_nest for the innermost loop that varies for
this data dependence relation.
| bool data_dependence_relation::reversed_p |
Is the dependence reversed with respect to the lexicographic order?
| bool data_dependence_relation::self_reference_p |
Set to true when the dependence relation is on the same data
access.
| vec<subscript_p> data_dependence_relation::subscripts |
For each subscript in the dependence test, there is an element in
this array. This is the attribute that labels the edge A->B of
the data_dependence_relation.
The documentation for this struct was generated from the following file:
