diff options
Diffstat (limited to 'gcc/tree-data-ref.c')
| -rw-r--r-- | gcc/tree-data-ref.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index 7d1f03c..e536b46 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -3191,6 +3191,8 @@ initialize_matrix_A (lambda_matrix A, tree chrec, unsigned index, int mult) switch (TREE_CODE (chrec)) { case POLYNOMIAL_CHREC: + if (!cst_and_fits_in_hwi (CHREC_RIGHT (chrec))) + return chrec_dont_know; A[index][0] = mult * int_cst_value (CHREC_RIGHT (chrec)); return initialize_matrix_A (A, CHREC_LEFT (chrec), index + 1, mult); @@ -3574,7 +3576,7 @@ analyze_subscript_affine_affine (tree chrec_a, tree *last_conflicts) { unsigned nb_vars_a, nb_vars_b, dim; - HOST_WIDE_INT init_a, init_b, gamma, gcd_alpha_beta; + HOST_WIDE_INT gamma, gcd_alpha_beta; lambda_matrix A, U, S; struct obstack scratch_obstack; @@ -3611,9 +3613,20 @@ analyze_subscript_affine_affine (tree chrec_a, A = lambda_matrix_new (dim, 1, &scratch_obstack); S = lambda_matrix_new (dim, 1, &scratch_obstack); - init_a = int_cst_value (initialize_matrix_A (A, chrec_a, 0, 1)); - init_b = int_cst_value (initialize_matrix_A (A, chrec_b, nb_vars_a, -1)); - gamma = init_b - init_a; + tree init_a = initialize_matrix_A (A, chrec_a, 0, 1); + tree init_b = initialize_matrix_A (A, chrec_b, nb_vars_a, -1); + if (init_a == chrec_dont_know + || init_b == chrec_dont_know) + { + if (dump_file && (dump_flags & TDF_DETAILS)) + fprintf (dump_file, "affine-affine test failed: " + "representation issue.\n"); + *overlaps_a = conflict_fn_not_known (); + *overlaps_b = conflict_fn_not_known (); + *last_conflicts = chrec_dont_know; + goto end_analyze_subs_aa; + } + gamma = int_cst_value (init_b) - int_cst_value (init_a); /* Don't do all the hard work of solving the Diophantine equation when we already know the solution: for example, |