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| author | Richard Biener <rguenther@suse.de> | 2015-05-04 14:24:49 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2015-05-04 14:24:49 +0000 |
| commit | 78a8b26c40f8be8eaca5aaa2680e213e0bd7d05a (patch) | |
| tree | 9ef0826a52ad6fa9d58f2d6a4b69cfa220f5f9f5 /gcc/tree-vect-data-refs.c | |
| parent | 7457466941a2a06b99731bb7ed3ab90ba37b8110 (diff) | |
| download | gcc-78a8b26c40f8be8eaca5aaa2680e213e0bd7d05a.zip gcc-78a8b26c40f8be8eaca5aaa2680e213e0bd7d05a.tar.gz gcc-78a8b26c40f8be8eaca5aaa2680e213e0bd7d05a.tar.bz2 | |
re PR middle-end/65965 (Straight-line memcpy/memset not vectorized when equivalent loop is)
2015-05-04 Richard Biener <rguenther@suse.de>
PR tree-optimization/65965
* tree-vect-data-refs.c (vect_analyze_data_ref_accesses): Split
store groups at gaps.
* gcc.dg/vect/bb-slp-33.c: New testcase.
From-SVN: r222765
Diffstat (limited to 'gcc/tree-vect-data-refs.c')
| -rw-r--r-- | gcc/tree-vect-data-refs.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gcc/tree-vect-data-refs.c b/gcc/tree-vect-data-refs.c index 96afc7a..ccb1f62 100644 --- a/gcc/tree-vect-data-refs.c +++ b/gcc/tree-vect-data-refs.c @@ -2602,6 +2602,15 @@ vect_analyze_data_ref_accesses (loop_vec_info loop_vinfo, bb_vec_info bb_vinfo) if ((init_b - init_a) % type_size_a != 0) break; + /* If we have a store, the accesses are adjacent. This splits + groups into chunks we support (we don't support vectorization + of stores with gaps). */ + if (!DR_IS_READ (dra) + && (init_b - (HOST_WIDE_INT) TREE_INT_CST_LOW + (DR_INIT (datarefs_copy[i-1])) + != type_size_a)) + break; + /* The step (if not zero) is greater than the difference between data-refs' inits. This splits groups into suitable sizes. */ HOST_WIDE_INT step = tree_to_shwi (DR_STEP (dra)); |