/* Lambda matrix and vector interface.
- Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ Free Software Foundation, Inc.
Contributed by Daniel Berlin <dberlin@dberlin.org>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef LAMBDA_H
#define LAMBDA_H
and scalar multiplication. In this vector space, an element is a list of
integers. */
typedef int *lambda_vector;
-
DEF_VEC_P(lambda_vector);
DEF_VEC_ALLOC_P(lambda_vector,heap);
+DEF_VEC_ALLOC_P(lambda_vector,gc);
+
+typedef VEC(lambda_vector, heap) *lambda_vector_vec_p;
+DEF_VEC_P (lambda_vector_vec_p);
+DEF_VEC_ALLOC_P (lambda_vector_vec_p, heap);
/* An integer matrix. A matrix consists of m vectors of length n (IE
all vectors are the same length). */
typedef lambda_vector *lambda_matrix;
+DEF_VEC_P (lambda_matrix);
+DEF_VEC_ALLOC_P (lambda_matrix, heap);
+
/* A transformation matrix, which is a self-contained ROWSIZE x COLSIZE
matrix. Rather than use floats, we simply keep a single DENOMINATOR that
represents the denominator for every element in the matrix. */
#define LLE_DENOMINATOR(T) ((T)->denominator)
#define LLE_NEXT(T) ((T)->next)
-lambda_linear_expression lambda_linear_expression_new (int, int);
+struct obstack;
+
+lambda_linear_expression lambda_linear_expression_new (int, int,
+ struct obstack *);
void print_lambda_linear_expression (FILE *, lambda_linear_expression, int,
int, char);
#define LN_DEPTH(T) ((T)->depth)
#define LN_INVARIANTS(T) ((T)->invariants)
-lambda_loopnest lambda_loopnest_new (int, int);
-lambda_loopnest lambda_loopnest_transform (lambda_loopnest, lambda_trans_matrix);
+lambda_loopnest lambda_loopnest_new (int, int, struct obstack *);
+lambda_loopnest lambda_loopnest_transform (lambda_loopnest,
+ lambda_trans_matrix,
+ struct obstack *);
struct loop;
bool perfect_nest_p (struct loop *);
void print_lambda_loopnest (FILE *, lambda_loopnest, char);
lambda_vector);
bool lambda_trans_matrix_id_p (lambda_trans_matrix);
-lambda_body_vector lambda_body_vector_new (int);
-lambda_body_vector lambda_body_vector_compute_new (lambda_trans_matrix,
- lambda_body_vector);
+lambda_body_vector lambda_body_vector_new (int, struct obstack *);
+lambda_body_vector lambda_body_vector_compute_new (lambda_trans_matrix,
+ lambda_body_vector,
+ struct obstack *);
void print_lambda_body_vector (FILE *, lambda_body_vector);
lambda_loopnest gcc_loopnest_to_lambda_loopnest (struct loop *,
VEC(tree,heap) **,
- VEC(tree,heap) **);
+ VEC(tree,heap) **,
+ struct obstack *);
void lambda_loopnest_to_gcc_loopnest (struct loop *,
VEC(tree,heap) *, VEC(tree,heap) *,
- lambda_loopnest, lambda_trans_matrix);
-
+ VEC(gimple,heap) **,
+ lambda_loopnest, lambda_trans_matrix,
+ struct obstack *);
+void remove_iv (gimple);
+tree find_induction_var_from_exit_cond (struct loop *);
static inline void lambda_vector_negate (lambda_vector, lambda_vector, int);
static inline void lambda_vector_mult_const (lambda_vector, lambda_vector, int, int);
dest[i] += mat[j][i] * vect[j];
}
+/* Compare two vectors returning an integer less than, equal to, or
+ greater than zero if the first argument is considered to be respectively
+ less than, equal to, or greater than the second.
+ We use the lexicographic order. */
+
+static inline int
+lambda_vector_compare (lambda_vector vec1, int length1, lambda_vector vec2,
+ int length2)
+{
+ int min_length;
+ int i;
+
+ if (length1 < length2)
+ min_length = length1;
+ else
+ min_length = length2;
+
+ for (i = 0; i < min_length; i++)
+ if (vec1[i] < vec2[i])
+ return -1;
+ else if (vec1[i] > vec2[i])
+ return 1;
+ else
+ continue;
+
+ return length1 - length2;
+}
/* Print out a vector VEC of length N to OUTFILE. */
return expr;
}
-#endif /* LAMBDA_H */
+/* Returns the dependence level for a vector DIST of size LENGTH.
+ LEVEL = 0 means a lexicographic dependence, i.e. a dependence due
+ to the sequence of statements, not carried by any loop. */
+
+static inline unsigned
+dependence_level (lambda_vector dist_vect, int length)
+{
+ int i;
+
+ for (i = 0; i < length; i++)
+ if (dist_vect[i] != 0)
+ return i + 1;
+
+ return 0;
+}
+
+#endif /* LAMBDA_H */
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