tcg: Implement gvec support for rotate by scalar

No host backend support yet, but the interfaces for rotls
are in place.  Only implement left-rotate for now, as the
only known use of vector rotate by scalar is s390x, so any
right-rotate would be unused and untestable.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/tcg/tcg.c b/tcg/tcg.c
index bd6ffab79b..97558ec068 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -1663,6 +1663,8 @@ bool tcg_op_supported(TCGOpcode op)
         return have_vec && TCG_TARGET_HAS_shv_vec;
     case INDEX_op_rotli_vec:
         return have_vec && TCG_TARGET_HAS_roti_vec;
+    case INDEX_op_rotls_vec:
+        return have_vec && TCG_TARGET_HAS_rots_vec;
     case INDEX_op_rotlv_vec:
     case INDEX_op_rotrv_vec:
         return have_vec && TCG_TARGET_HAS_rotv_vec;