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| author | Richard Biener <rguenther@suse.de> | 2013-04-18 12:57:17 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2013-04-18 12:57:17 +0000 |
| commit | 08940f33eb4bb87f8944e771189ba48d8c7ca176 (patch) | |
| tree | d2f83ada3798b32cb210ac1543a9fa62b2494525 /gcc/tree-vect-stmts.c | |
| parent | 0e0f87d44bfa4c5a2e6547f780e869a8756dca70 (diff) | |
| download | gcc-08940f33eb4bb87f8944e771189ba48d8c7ca176.zip gcc-08940f33eb4bb87f8944e771189ba48d8c7ca176.tar.gz gcc-08940f33eb4bb87f8944e771189ba48d8c7ca176.tar.bz2 | |
tree-vect-data-refs.c (vect_analyze_group_access): Properly handle negative step.
2013-04-18 Richard Biener <rguenther@suse.de>
* tree-vect-data-refs.c (vect_analyze_group_access): Properly
handle negative step. Remove redundant checks.
(vect_create_data_ref_ptr): Avoid ICEs with non-constant steps.
* tree-vect-stmts.c (vectorizable_load): Instead of asserting
for negative step and grouped loads fail to vectorize.
From-SVN: r198054
Diffstat (limited to 'gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc/tree-vect-stmts.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index bdd4d64..ca474c1 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -4465,7 +4465,13 @@ vectorizable_load (gimple stmt, gimple_stmt_iterator *gsi, gimple *vec_stmt, if (negative) { - gcc_assert (!grouped_load); + if (grouped_load) + { + if (dump_enabled_p ()) + dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, + "negative step for group load not supported"); + return false; + } alignment_support_scheme = vect_supportable_dr_alignment (dr, false); if (alignment_support_scheme != dr_aligned && alignment_support_scheme != dr_unaligned_supported) |