Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/tcg-op-vec.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/tcg/tcg-op-vec.c b/tcg/tcg-op-vec.c
index 094298bb27..84af210bc0 100644
--- a/tcg/tcg-op-vec.c
+++ b/tcg/tcg-op-vec.c
@@ -508,9 +508,11 @@ void tcg_gen_cmp_vec(TCGCond cond, unsigned vece,
     TCGTemp *rt = tcgv_vec_temp(r);
     TCGTemp *at = tcgv_vec_temp(a);
     TCGTemp *bt = tcgv_vec_temp(b);
+    TCGTemp *tt = NULL;
     TCGArg ri = temp_arg(rt);
     TCGArg ai = temp_arg(at);
     TCGArg bi = temp_arg(bt);
+    TCGArg ti;
     TCGType type = rt->base_type;
     int can;
 
@@ -518,6 +520,18 @@ void tcg_gen_cmp_vec(TCGCond cond, unsigned vece,
     tcg_debug_assert(bt->base_type >= type);
     tcg_assert_listed_vecop(INDEX_op_cmp_vec);
     can = tcg_can_emit_vec_op(INDEX_op_cmp_vec, type, vece);
+
+    if (!TCG_TARGET_HAS_tst_vec && is_tst_cond(cond)) {
+        tt = tcg_temp_new_internal(type, TEMP_EBB);
+        ti = temp_arg(tt);
+        vec_gen_3(INDEX_op_and_vec, type, 0, ti, ai, bi);
+        at = tt;
+        ai = ti;
+        bt = tcg_constant_internal(type, 0);
+        bi = temp_arg(bt);
+        cond = tcg_tst_eqne_cond(cond);
+    }
+
     if (can > 0) {
         vec_gen_4(INDEX_op_cmp_vec, type, vece, ri, ai, bi, cond);
     } else {
@@ -526,6 +540,10 @@ void tcg_gen_cmp_vec(TCGCond cond, unsigned vece,
         tcg_expand_vec_op(INDEX_op_cmp_vec, type, vece, ri, ai, bi, cond);
         tcg_swap_vecop_list(hold_list);
     }
+
+    if (tt) {
+        tcg_temp_free_internal(tt);
+    }
 }
 
 static bool do_op3(unsigned vece, TCGv_vec r, TCGv_vec a,
-- 
2.34.1