diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_arith.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_arith.h
index a3116033fb3..0e5e07a38b6 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_arith.h
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_arith.h
@@ -3,6 +3,15 @@
 
 #include <stdint-gcc.h>
 #include <stdbool.h>
+#include <stdio.h>
+
+#define VALIDATE_RESULT(out, expect, N)              \
+  do                                                 \
+    {                                                \
+      for (unsigned i = 0; i < N; i++)               \
+        if (out[i] != expect[i]) __builtin_abort (); \
+    }                                                \
+  while (false)
 
 /******************************************************************************/
 /* Saturation Add (unsigned and signed)                                       */
@@ -139,6 +148,23 @@ vec_sat_u_add_##T##_fmt_8 (T *out, T *op_1, T *op_2, unsigned limit) \
 #define RUN_VEC_SAT_U_ADD_FMT_8(T, out, op_1, op_2, N) \
   vec_sat_u_add_##T##_fmt_8(out, op_1, op_2, N)
 
+#define DEF_VEC_SAT_U_ADD_IMM_FMT_1(T, IMM)                          \
+T __attribute__((noinline))                                          \
+vec_sat_u_add_imm##IMM##_##T##_fmt_1 (T *out, T *in, unsigned limit) \
+{                                                                    \
+  unsigned i;                                                        \
+  for (i = 0; i < limit; i++)                                        \
+    out[i] = (T)(in[i] + IMM) >= in[i] ? (in[i] + IMM) : -1;         \
+}
+#define DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP(T, IMM) \
+  DEF_VEC_SAT_U_ADD_IMM_FMT_1(T, IMM)
+
+#define RUN_VEC_SAT_U_ADD_IMM_FMT_1(T, out, op_1, expect, IMM, N) \
+  vec_sat_u_add_imm##IMM##_##T##_fmt_1(out, op_1, N);             \
+  VALIDATE_RESULT (out, expect, N)
+#define RUN_VEC_SAT_U_ADD_IMM_FMT_1_WRAP(T, out, op_1, expect, IMM, N) \
+  RUN_VEC_SAT_U_ADD_IMM_FMT_1(T, out, op_1, expect, IMM, N)
+
 /******************************************************************************/
 /* Saturation Sub (Unsigned and Signed)                                       */
 /******************************************************************************/
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_data.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_data.h
new file mode 100644
index 00000000000..0146138a3c5
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_data.h
@@ -0,0 +1,256 @@
+#ifndef HAVE_DEFINE_VEC_SAT_DATA_H
+#define HAVE_DEFINE_VEC_SAT_DATA_H
+
+#define N 16
+#define TEST_UNARY_DATA(T, NAME) test_##T##_##NAME##_data
+#define TEST_UNARY_DATA_WRAP(T, NAME) TEST_UNARY_DATA(T, NAME)
+
+uint8_t TEST_UNARY_DATA(uint8_t, sat_u_add_imm)[][2][N] =
+{
+  { /* For add imm 0 */
+    {
+      0, 1, 5, 255,
+      0, 1, 5, 255,
+      0, 1, 5, 255,
+      0, 1, 5, 255,
+    },
+    {
+      0, 1, 5, 255,
+      0, 1, 5, 255,
+      0, 1, 5, 255,
+      0, 1, 5, 255,
+    },
+  },
+  { /* For add imm 1 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+    },
+  },
+  { /* For add imm 254 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      254, 255, 254, 255,
+      254, 255, 254, 255,
+      254, 255, 254, 255,
+      254, 255, 254, 255,
+    },
+  },
+  { /* For add imm 255 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      255, 255, 255, 255,
+      255, 255, 255, 255,
+      255, 255, 255, 255,
+      255, 255, 255, 255,
+    },
+  },
+};
+
+uint16_t TEST_UNARY_DATA(uint16_t, sat_u_add_imm)[][2][N] =
+{
+  { /* For add imm 0 */
+    {
+      0, 1, 5, 65535,
+      0, 1, 5, 65535,
+      0, 1, 5, 65535,
+      0, 1, 5, 65535,
+    },
+    {
+      0, 1, 5, 65535,
+      0, 1, 5, 65535,
+      0, 1, 5, 65535,
+      0, 1, 5, 65535,
+    },
+  },
+  { /* For add imm 1 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+    },
+  },
+  { /* For add imm 65534 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      65534, 65535, 65534, 65535,
+      65534, 65535, 65534, 65535,
+      65534, 65535, 65534, 65535,
+      65534, 65535, 65534, 65535,
+    },
+  },
+  { /* For add imm 65535 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      65535, 65535, 65535, 65535,
+      65535, 65535, 65535, 65535,
+      65535, 65535, 65535, 65535,
+      65535, 65535, 65535, 65535,
+    },
+  },
+};
+
+uint32_t TEST_UNARY_DATA(uint32_t, sat_u_add_imm)[][2][N] =
+{
+  { /* For add imm 0 */
+    {
+      0, 1, 5, 4294967295,
+      0, 1, 5, 4294967295,
+      0, 1, 5, 4294967295,
+      0, 1, 5, 4294967295,
+    },
+    {
+      0, 1, 5, 4294967295,
+      0, 1, 5, 4294967295,
+      0, 1, 5, 4294967295,
+      0, 1, 5, 4294967295,
+    },
+  },
+  { /* For add imm 1 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+    },
+  },
+  { /* For add imm 4294967294 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      4294967294, 4294967295, 4294967294, 4294967295,
+      4294967294, 4294967295, 4294967294, 4294967295,
+      4294967294, 4294967295, 4294967294, 4294967295,
+      4294967294, 4294967295, 4294967294, 4294967295,
+    },
+  },
+  { /* For add imm 4294967295 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      4294967295, 4294967295, 4294967295, 4294967295,
+      4294967295, 4294967295, 4294967295, 4294967295,
+      4294967295, 4294967295, 4294967295, 4294967295,
+      4294967295, 4294967295, 4294967295, 4294967295,
+    },
+  },
+};
+
+uint64_t TEST_UNARY_DATA(uint64_t, sat_u_add_imm)[][2][N] =
+{
+  { /* For add imm 0 */
+    {
+      0, 1, 5, 18446744073709551615u,
+      0, 1, 5, 18446744073709551615u,
+      0, 1, 5, 18446744073709551615u,
+      0, 1, 5, 18446744073709551615u,
+    },
+    {
+      0, 1, 5, 18446744073709551615u,
+      0, 1, 5, 18446744073709551615u,
+      0, 1, 5, 18446744073709551615u,
+      0, 1, 5, 18446744073709551615u,
+    },
+  },
+  { /* For add imm 1 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+      1, 2, 1, 9,
+    },
+  },
+  { /* For add imm 18446744073709551614 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      18446744073709551614u, 18446744073709551615u,
+      18446744073709551614u, 18446744073709551615u,
+      18446744073709551614u, 18446744073709551615u,
+      18446744073709551614u, 18446744073709551615u,
+      18446744073709551614u, 18446744073709551615u,
+      18446744073709551614u, 18446744073709551615u,
+      18446744073709551614u, 18446744073709551615u,
+      18446744073709551614u, 18446744073709551615u,
+    },
+  },
+  { /* For add imm 18446744073709551615 */
+    {
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+      0, 1, 0, 8,
+    },
+    {
+      18446744073709551615u, 18446744073709551615u,
+      18446744073709551615u, 18446744073709551615u,
+      18446744073709551615u, 18446744073709551615u,
+      18446744073709551615u, 18446744073709551615u,
+      18446744073709551615u, 18446744073709551615u,
+      18446744073709551615u, 18446744073709551615u,
+      18446744073709551615u, 18446744073709551615u,
+      18446744073709551615u, 18446744073709551615u,
+    },
+  },
+};
+
+#endif
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-1.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-1.c
new file mode 100644
index 00000000000..e5350734749
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-1.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -ftree-vectorize -fdump-rtl-expand-details -fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "vec_sat_arith.h"
+
+/*
+** vec_sat_u_add_imm9_uint8_t_fmt_1:
+** ...
+** vsaddu\.vi\s+v[0-9]+,\s*v[0-9]+,\s*9
+** ...
+*/
+DEF_VEC_SAT_U_ADD_IMM_FMT_1(uint8_t, 9)
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-2.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-2.c
new file mode 100644
index 00000000000..2319f0730a4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-2.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -ftree-vectorize -fdump-rtl-expand-details -fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "vec_sat_arith.h"
+
+/*
+** vec_sat_u_add_imm15_uint16_t_fmt_1:
+** ...
+** vsaddu\.vi\s+v[0-9]+,\s*v[0-9]+,\s*15
+** ...
+*/
+DEF_VEC_SAT_U_ADD_IMM_FMT_1(uint16_t, 15)
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-3.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-3.c
new file mode 100644
index 00000000000..bc5d0ef026a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-3.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -ftree-vectorize -fdump-rtl-expand-details -fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "vec_sat_arith.h"
+
+/*
+** vec_sat_u_add_imm33_uint32_t_fmt_1:
+** ...
+** vsaddu\.vv\s+v[0-9]+,\s*v[0-9]+,\s*v[0-9]+
+** ...
+*/
+DEF_VEC_SAT_U_ADD_IMM_FMT_1(uint32_t, 33)
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-4.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-4.c
new file mode 100644
index 00000000000..3912dc465c1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-4.c
@@ -0,0 +1,14 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -ftree-vectorize -fdump-rtl-expand-details -fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "vec_sat_arith.h"
+
+/*
+** vec_sat_u_add_imm129_uint64_t_fmt_1:
+** ...
+** vsaddu\.vv\s+v[0-9]+,\s*v[0-9]+,\s*v[0-9]+
+** ...
+*/
+DEF_VEC_SAT_U_ADD_IMM_FMT_1(uint64_t, 129)
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-1.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-1.c
new file mode 100644
index 00000000000..41524753a35
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-1.c
@@ -0,0 +1,28 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T uint8_t
+#define RUN(T, out, in, expect, IMM, N) \
+  RUN_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, out, in, expect, IMM, N)
+
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,   0)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,   1)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 254)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 255)
+
+int
+main ()
+{
+  T out[N];
+  T (*d)[2][N] = TEST_UNARY_DATA_WRAP (T, sat_u_add_imm);
+
+  RUN (T, out, d[0][0], d[0][1],   0, N);
+  RUN (T, out, d[1][0], d[1][1],   1, N);
+  RUN (T, out, d[2][0], d[2][1], 254, N);
+  RUN (T, out, d[3][0], d[3][1], 255, N);
+
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-2.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-2.c
new file mode 100644
index 00000000000..dba87ac0720
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-2.c
@@ -0,0 +1,28 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T uint16_t
+#define RUN(T, out, in, expect, IMM, N) \
+  RUN_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, out, in, expect, IMM, N)
+
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,     0)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,     1)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 65534)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 65535)
+
+int
+main ()
+{
+  T out[N];
+  T (*d)[2][N] = TEST_UNARY_DATA_WRAP (T, sat_u_add_imm);
+
+  RUN (T, out, d[0][0], d[0][1],     0, N);
+  RUN (T, out, d[1][0], d[1][1],     1, N);
+  RUN (T, out, d[2][0], d[2][1], 65534, N);
+  RUN (T, out, d[3][0], d[3][1], 65535, N);
+
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-3.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-3.c
new file mode 100644
index 00000000000..cf96f14b341
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-3.c
@@ -0,0 +1,28 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T uint32_t
+#define RUN(T, out, in, expect, IMM, N) \
+  RUN_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, out, in, expect, IMM, N)
+
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,          0)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,          1)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 4294967295)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 4294967294)
+
+int
+main ()
+{
+  T out[N];
+  T (*d)[2][N] = TEST_UNARY_DATA_WRAP (T, sat_u_add_imm);
+
+  RUN (T, out, d[0][0], d[0][1],          0, N);
+  RUN (T, out, d[1][0], d[1][1],          1, N);
+  RUN (T, out, d[2][0], d[2][1], 4294967294, N);
+  RUN (T, out, d[3][0], d[3][1], 4294967295, N);
+
+  return 0;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-4.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-4.c
new file mode 100644
index 00000000000..8ec1f1a40b1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/binop/vec_sat_u_add_imm-run-4.c
@@ -0,0 +1,28 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T uint64_t
+#define RUN(T, out, in, expect, IMM, N) \
+  RUN_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, out, in, expect, IMM, N)
+
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,                     0)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T,                     1)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 18446744073709551614u)
+DEF_VEC_SAT_U_ADD_IMM_FMT_1_WRAP (T, 18446744073709551615u)
+
+int
+main ()
+{
+  T out[N];
+  T (*d)[2][N] = TEST_UNARY_DATA_WRAP (T, sat_u_add_imm);
+
+  RUN (T, out, d[0][0], d[0][1],                     0, N);
+  RUN (T, out, d[1][0], d[1][1],                     1, N);
+  RUN (T, out, d[2][0], d[2][1], 18446744073709551614u, N);
+  RUN (T, out, d[3][0], d[3][1], 18446744073709551615u, N);
+
+  return 0;
+}
