access_matrix Struct Reference
#include <tree-data-ref.h>
Collaboration diagram for access_matrix:
Data Fields | |
| vec< loop_p > | loop_nest |
| int | nb_induction_vars |
| vec< tree > | parameters |
| vec< lambda_vector, va_gc > * | matrix |
Detailed Description
Each vector of the access matrix represents a linear access
function for a subscript. First elements correspond to the
leftmost indices, ie. for a[i][j] the first vector corresponds to
the subscript in "i". The elements of a vector are relative to
the loop nests in which the data reference is considered,
i.e. the vector is relative to the SCoP that provides the context
in which this data reference occurs.
For example, in
| loop_1
| loop_2
| a[i+3][2*j+n-1]
if "i" varies in loop_1 and "j" varies in loop_2, the access
matrix with respect to the loop nest {loop_1, loop_2} is:
| loop_1 loop_2 param_n cst
| 1 0 0 3
| 0 2 1 -1
whereas the access matrix with respect to loop_2 considers "i" as
a parameter:
| loop_2 param_i param_n cst
| 0 1 0 3
| 2 0 1 -1 Field Documentation
| vec<lambda_vector, va_gc>* access_matrix::matrix |
| int access_matrix::nb_induction_vars |
The documentation for this struct was generated from the following file:
