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-rw-r--r--tcg/riscv/tcg-target-con-set.h1
-rw-r--r--tcg/riscv/tcg-target.c.inc8
2 files changed, 7 insertions, 2 deletions
diff --git a/tcg/riscv/tcg-target-con-set.h b/tcg/riscv/tcg-target-con-set.h
index 97e6ecdb0f..d8ce5414f5 100644
--- a/tcg/riscv/tcg-target-con-set.h
+++ b/tcg/riscv/tcg-target-con-set.h
@@ -25,6 +25,7 @@ C_O0_I2(v, r)
C_O1_I1(v, r)
C_O1_I1(v, v)
C_O1_I2(v, v, v)
+C_O1_I2(v, vK, v)
C_O1_I2(v, v, vK)
C_O1_I2(v, v, vL)
C_O1_I4(v, v, vL, vK, vK)
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index ce8d6d0293..1ce2f291d3 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -2350,7 +2350,11 @@ static void tcg_out_vec_op(TCGContext *s, TCGOpcode opc,
break;
case INDEX_op_sub_vec:
set_vtype_len_sew(s, type, vece);
- tcg_out_opc_vv(s, OPC_VSUB_VV, a0, a1, a2);
+ if (const_args[1]) {
+ tcg_out_opc_vi(s, OPC_VRSUB_VI, a0, a2, a1);
+ } else {
+ tcg_out_opc_vv(s, OPC_VSUB_VV, a0, a1, a2);
+ }
break;
case INDEX_op_and_vec:
set_vtype_len(s, type);
@@ -2565,7 +2569,7 @@ static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
case INDEX_op_xor_vec:
return C_O1_I2(v, v, vK);
case INDEX_op_sub_vec:
- return C_O1_I2(v, v, v);
+ return C_O1_I2(v, vK, v);
case INDEX_op_cmp_vec:
return C_O1_I2(v, v, vL);
case INDEX_op_cmpsel_vec: