Handle the overlap of source registers with different EEWs.

Co-authored-by: Anton Blanchard <antonb@tenstorrent.com>
Co-authored-by: Max Chou <max.chou@sifive.com>
Signed-off-by: Max Chou <max.chou@sifive.com>
---
 target/riscv/insn_trans/trans_rvv.c.inc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc
index 4a0c9fbeff3..3d02a2f9ec8 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -412,7 +412,9 @@ static bool vext_check_ss(DisasContext *s, int vd, int vs, int vm)
 {
     return require_vm(vm, vd) &&
            require_align(vd, s->lmul) &&
-           require_align(vs, s->lmul);
+           require_align(vs, s->lmul) &&
+           vext_check_input_eew(s, vs, s->sew, -1, s->sew, vm);
+
 }
 
 /*
-- 
2.43.0