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Diffstat (limited to 'gcc/tree-vect-loop.c')
| -rw-r--r-- | gcc/tree-vect-loop.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/tree-vect-loop.c b/gcc/tree-vect-loop.c index e978015..fc3dab0 100644 --- a/gcc/tree-vect-loop.c +++ b/gcc/tree-vect-loop.c @@ -6661,6 +6661,12 @@ vectorizable_reduction (loop_vec_info loop_vinfo, bool lane_reduc_code_p = (code == DOT_PROD_EXPR || code == WIDEN_SUM_EXPR || code == SAD_EXPR); int op_type = TREE_CODE_LENGTH (code); + enum optab_subtype optab_query_kind = optab_vector; + if (code == DOT_PROD_EXPR + && TYPE_SIGN (TREE_TYPE (gimple_assign_rhs1 (stmt))) + != TYPE_SIGN (TREE_TYPE (gimple_assign_rhs2 (stmt)))) + optab_query_kind = optab_vector_mixed_sign; + scalar_dest = gimple_assign_lhs (stmt); scalar_type = TREE_TYPE (scalar_dest); @@ -7189,7 +7195,7 @@ vectorizable_reduction (loop_vec_info loop_vinfo, bool ok = true; /* 4.1. check support for the operation in the loop */ - optab optab = optab_for_tree_code (code, vectype_in, optab_vector); + optab optab = optab_for_tree_code (code, vectype_in, optab_query_kind); if (!optab) { if (dump_enabled_p ()) |