From: Frank Chang <frank.chang@sifive.com>

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn_trans/trans_rvv.c.inc | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/target/riscv/insn_trans/trans_rvv.c.inc b/target/riscv/insn_trans/trans_rvv.c.inc
index c4ccccb0370..49889a7706b 100644
--- a/target/riscv/insn_trans/trans_rvv.c.inc
+++ b/target/riscv/insn_trans/trans_rvv.c.inc
@@ -2877,7 +2877,14 @@ GEN_OPFVV_TRANS(vfredmax_vs, freduction_check)
 GEN_OPFVV_TRANS(vfredmin_vs, freduction_check)
 
 /* Vector Widening Floating-Point Reduction Instructions */
-GEN_OPFVV_WIDEN_TRANS(vfwredsum_vs, reduction_check)
+static bool freduction_widen_check(DisasContext *s, arg_rmrr *a)
+{
+    return reduction_widen_check(s, a) &&
+           require_scale_rvf(s) &&
+           (s->sew != MO_8);
+}
+
+GEN_OPFVV_WIDEN_TRANS(vfwredsum_vs, freduction_widen_check)
 
 /*
  *** Vector Mask Operations
-- 
2.17.1