diff options
Diffstat (limited to 'gcc/tree-data-ref.c')
| -rw-r--r-- | gcc/tree-data-ref.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index a40f40dc339..d6d9ffcaa34 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -1509,13 +1509,14 @@ initialize_data_dependence_relation (struct data_reference *a, /* The case where the references are exactly the same. */ if (operand_equal_p (DR_REF (a), DR_REF (b), 0)) { - if (loop_nest.exists () - && !object_address_invariant_in_loop_p (loop_nest[0], - DR_BASE_OBJECT (a))) - { - DDR_ARE_DEPENDENT (res) = chrec_dont_know; - return res; - } + if ((loop_nest.exists () + && !object_address_invariant_in_loop_p (loop_nest[0], + DR_BASE_OBJECT (a))) + || DR_NUM_DIMENSIONS (a) == 0) + { + DDR_ARE_DEPENDENT (res) = chrec_dont_know; + return res; + } DDR_AFFINE_P (res) = true; DDR_ARE_DEPENDENT (res) = NULL_TREE; DDR_SUBSCRIPTS (res).create (DR_NUM_DIMENSIONS (a)); @@ -1547,9 +1548,9 @@ initialize_data_dependence_relation (struct data_reference *a, /* If the base of the object is not invariant in the loop nest, we cannot analyze it. TODO -- in fact, it would suffice to record that there may be arbitrary dependences in the loops where the base object varies. */ - if (loop_nest.exists () - && !object_address_invariant_in_loop_p (loop_nest[0], - DR_BASE_OBJECT (a))) + if ((loop_nest.exists () + && !object_address_invariant_in_loop_p (loop_nest[0], DR_BASE_OBJECT (a))) + || DR_NUM_DIMENSIONS (a) == 0) { DDR_ARE_DEPENDENT (res) = chrec_dont_know; return res; |