[PATCH v2 4/4] target/arm: Fix tcg_gen_gvec_dup_imm vs DUP (indexed)

[Richard Henderson]

DUP (indexed) can duplicate 128-bit elements, so using esz
unconditionally can assert in tcg_gen_gvec_dup_imm.

Fixes: 8711e71f9cbb
Reported-by: Laurent Desnogues <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
---
 target/arm/translate-sve.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index c8649283be..83614e9e70 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -2044,7 +2044,11 @@ static bool trans_DUP_x(DisasContext *s, arg_DUP_x *a)
             unsigned nofs = vec_reg_offset(s, a->rn, index, esz);
             tcg_gen_gvec_dup_mem(esz, dofs, nofs, vsz, vsz);
         } else {
-            tcg_gen_gvec_dup_imm(esz, dofs, vsz, vsz, 0);
+            /*
+             * While dup_mem handles 128-bit elements, dup_imm does not.
+             * Thankfully element size doesn't matter for splatting zero.
+             */
+            tcg_gen_gvec_dup_imm(MO_64, dofs, vsz, vsz, 0);
         }
     }
     return true;
-- 
2.20.1