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| author | Richard Guenther <rguenther@suse.de> | 2010-04-13 09:48:26 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2010-04-13 09:48:26 +0000 |
| commit | 777e1f09ffc68eb0c122c74275fd69aef2dea61d (patch) | |
| tree | 1b7bb981ab3207d6bac81f6a8d4c80f528a0e0ed /gcc/tree-vect-slp.c | |
| parent | 1a71080889e16d01cccd6af982386633dcec9ec9 (diff) | |
| download | gcc-777e1f09ffc68eb0c122c74275fd69aef2dea61d.zip gcc-777e1f09ffc68eb0c122c74275fd69aef2dea61d.tar.gz gcc-777e1f09ffc68eb0c122c74275fd69aef2dea61d.tar.bz2 | |
tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Only add RW dependence for dependence distance zero.
2010-04-13 Richard Guenther <rguenther@suse.de>
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence):
Only add RW dependence for dependence distance zero.
Adjust maximal vectorization factor according to dependences.
Move alignment handling ...
(vect_find_same_alignment_drs): ... here. New function.
(vect_analyze_data_ref_dependences): Adjust.
(vect_analyze_data_refs_alignment): Call vect_find_same_alignment_drs.
(vect_analyze_data_refs): Adjust minimal vectorization factor
according to data references.
* tree-vect-loop.c (vect_analyze_loop): Analyze data-ref
dependences before determining the vectorization factor.
Analyze alignment after determining the vectorization factor.
* tree-vect-slp.c ((vect_slp_analyze_bb): Analyze data-ref
dependences before alignment.
* tree-vectorizer.h (vect_analyze_data_ref_dependences):
Adjust prototype.
(vect_analyze_data_refs): Likewise.
(MAX_VECTORIZATION_FACTOR): New define.
* gcc.dg/vect/no-vfa-vect-depend-1.c: Adjust.
From-SVN: r158259
Diffstat (limited to 'gcc/tree-vect-slp.c')
| -rw-r--r-- | gcc/tree-vect-slp.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/gcc/tree-vect-slp.c b/gcc/tree-vect-slp.c index 0e4f6ce..d25d347 100644 --- a/gcc/tree-vect-slp.c +++ b/gcc/tree-vect-slp.c @@ -1270,6 +1270,8 @@ vect_slp_analyze_bb (basic_block bb) slp_instance instance; int i, insns = 0; gimple_stmt_iterator gsi; + int min_vf = 2; + int max_vf = MAX_VECTORIZATION_FACTOR; if (vect_print_dump_info (REPORT_DETAILS)) fprintf (vect_dump, "===vect_slp_analyze_bb===\n"); @@ -1296,7 +1298,7 @@ vect_slp_analyze_bb (basic_block bb) if (!bb_vinfo) return NULL; - if (!vect_analyze_data_refs (NULL, bb_vinfo)) + if (!vect_analyze_data_refs (NULL, bb_vinfo, &min_vf)) { if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) fprintf (vect_dump, "not vectorized: unhandled data-ref in basic " @@ -1317,6 +1319,17 @@ vect_slp_analyze_bb (basic_block bb) return NULL; } + if (!vect_analyze_data_ref_dependences (NULL, bb_vinfo, &max_vf) + || min_vf > max_vf) + { + if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) + fprintf (vect_dump, "not vectorized: unhandled data dependence " + "in basic block.\n"); + + destroy_bb_vec_info (bb_vinfo); + return NULL; + } + if (!vect_analyze_data_refs_alignment (NULL, bb_vinfo)) { if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) @@ -1327,16 +1340,6 @@ vect_slp_analyze_bb (basic_block bb) return NULL; } - if (!vect_analyze_data_ref_dependences (NULL, bb_vinfo)) - { - if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) - fprintf (vect_dump, "not vectorized: unhandled data dependence in basic" - " block.\n"); - - destroy_bb_vec_info (bb_vinfo); - return NULL; - } - if (!vect_analyze_data_ref_accesses (NULL, bb_vinfo)) { if (vect_print_dump_info (REPORT_UNVECTORIZED_LOCATIONS)) |