diff options
Diffstat (limited to 'gcc/tree-data-ref.c')
| -rw-r--r-- | gcc/tree-data-ref.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index b88fbc2..85e6d72 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -2809,10 +2809,14 @@ add_multivariate_self_dist (struct data_dependence_relation *ddr, tree c_2) lambda_vector dist_v; int v1, v2, cd; - /* Polynomials with more than 2 variables are not handled yet. */ - if (TREE_CODE (c_0) != INTEGER_CST) + /* Polynomials with more than 2 variables are not handled yet. When + the evolution steps are parameters, it is not possible to + represent the dependence using classical distance vectors. */ + if (TREE_CODE (c_0) != INTEGER_CST + || TREE_CODE (CHREC_RIGHT (c_1)) != INTEGER_CST + || TREE_CODE (CHREC_RIGHT (c_2)) != INTEGER_CST) { - DDR_ARE_DEPENDENT (ddr) = chrec_dont_know; + DDR_AFFINE_P (ddr) = false; return; } |