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| author | vries <vries@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-01-26 22:18:28 +0000 |
|---|---|---|
| committer | vries <vries@138bc75d-0d04-0410-961f-82ee72b054a4> | 2016-01-26 22:18:28 +0000 |
| commit | ccd0385f28ddcb11db26d08c6ab726f9eeb45032 (patch) | |
| tree | bc4c0671ca70385feac3a9140b9140e311fea5c5 /gcc/tree-data-ref.c | |
| parent | db999c1862e9a3061cd69921881a8ebb0c07fc01 (diff) | |
| download | gcc-ccd0385f28ddcb11db26d08c6ab726f9eeb45032.tar.gz | |
Handle DR_NUM_DIMENSIONS == 0 in initialize_data_dependence_relation
2016-01-26 Tom de Vries <tom@codesourcery.com>
PR tree-optimization/69110
* tree-data-ref.c (initialize_data_dependence_relation): Handle
DR_NUM_DIMENSIONS == 0.
* gcc.dg/autopar/pr69110.c: New test.
* testsuite/libgomp.c/pr69110.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@232854 138bc75d-0d04-0410-961f-82ee72b054a4
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 7def7f0cb3b..4a517d75dd9 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -1495,13 +1495,14 @@ 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)); @@ -1533,9 +1534,9 @@ 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; |