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Diffstat (limited to 'gcc/tree-vect-patterns.c')
| -rw-r--r-- | gcc/tree-vect-patterns.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/gcc/tree-vect-patterns.c b/gcc/tree-vect-patterns.c index 55b9d50..ea82755 100644 --- a/gcc/tree-vect-patterns.c +++ b/gcc/tree-vect-patterns.c @@ -670,6 +670,8 @@ vect_pattern_recog_1 ( tree pattern_vectype; tree type_in, type_out; enum tree_code code; + int i; + gimple next; pattern_stmt = (* vect_recog_func) (stmt, &type_in, &type_out); if (!pattern_stmt) @@ -735,7 +737,13 @@ vect_pattern_recog_1 ( STMT_VINFO_IN_PATTERN_P (stmt_info) = true; STMT_VINFO_RELATED_STMT (stmt_info) = pattern_stmt; - return; + /* Patterns cannot be vectorized using SLP, because they change the order of + computation. */ + for (i = 0; VEC_iterate (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo), i, + next); + i++) + if (next == stmt) + VEC_ordered_remove (gimple, LOOP_VINFO_REDUCTIONS (loop_vinfo), i); } |