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| author | Richard Biener <rguenther@suse.de> | 2016-11-08 08:06:42 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2016-11-08 08:06:42 +0000 |
| commit | fe73a33284d23c5a7d8d8eb5b13e37454401b6c4 (patch) | |
| tree | 3d6f2b801388eaa2f83d00e53e161e87ce062ae9 /gcc/tree-vect-stmts.c | |
| parent | ed053eb8240556e7953ff865c428b784b6546717 (diff) | |
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re PR tree-optimization/78205 (BB vectorization confused by too large load groups)
2016-11-08 Richard Biener <rguenther@suse.de>
PR tree-optimization/78205
* tree-vect-stmts.c (vectorizable_load): Move check whether
we may run into gaps when BB vectorizing SLP permutations ...
* tree-vect-slp.c (vect_supported_load_permutation_p): ...
here where we can do a more precise check.
* gcc.dg/vect/bb-slp-pr78205.c: New testcase.
From-SVN: r241956
Diffstat (limited to 'gcc/tree-vect-stmts.c')
| -rw-r--r-- | gcc/tree-vect-stmts.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/gcc/tree-vect-stmts.c b/gcc/tree-vect-stmts.c index ab01def..15aec21 100644 --- a/gcc/tree-vect-stmts.c +++ b/gcc/tree-vect-stmts.c @@ -6548,18 +6548,6 @@ vectorizable_load (gimple *stmt, gimple_stmt_iterator *gsi, gimple **vec_stmt, if (slp && SLP_TREE_LOAD_PERMUTATION (slp_node).exists ()) slp_perm = true; - /* ??? The following is overly pessimistic (as well as the loop - case above) in the case we can statically determine the excess - elements loaded are within the bounds of a decl that is accessed. - Likewise for BB vectorizations using masked loads is a possibility. */ - if (bb_vinfo && slp_perm && group_size % nunits != 0) - { - dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, - "BB vectorization with gaps at the end of a load " - "is not supported\n"); - return false; - } - /* Invalidate assumptions made by dependence analysis when vectorization on the unrolled body effectively re-orders stmts. */ if (!PURE_SLP_STMT (stmt_info) |