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Diffstat (limited to 'gcc/tree-vect-data-refs.cc')
| -rw-r--r-- | gcc/tree-vect-data-refs.cc | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/gcc/tree-vect-data-refs.cc b/gcc/tree-vect-data-refs.cc index 9fd1ef2..f2deb75 100644 --- a/gcc/tree-vect-data-refs.cc +++ b/gcc/tree-vect-data-refs.cc @@ -3682,6 +3682,13 @@ vect_analyze_data_ref_accesses (vec_info *vinfo, != type_size_a)) break; + /* For datarefs with big gap, it's better to split them into different + groups. + .i.e a[0], a[1], a[2], .. a[7], a[100], a[101],..., a[107] */ + if ((unsigned HOST_WIDE_INT)(init_b - init_prev) * tree_to_uhwi (szb) + > MAX_BITSIZE_MODE_ANY_MODE / BITS_PER_UNIT) + break; + /* If the step (if not zero or non-constant) is smaller than the difference between data-refs' inits this splits groups into suitable sizes. */ |