RISC-V: Add testcases for form 1 of vector signed SAT_TRUNC

Form 1:
  #define DEF_VEC_SAT_S_TRUNC_FMT_1(NT, WT, NT_MIN, NT_MAX)             \
  void __attribute__((noinline))                                        \
  vec_sat_s_trunc_##NT##_##WT##_fmt_1 (NT *out, WT *in, unsigned limit) \
  {                                                                     \
    unsigned i;                                                         \
    for (i = 0; i < limit; i++)                                         \
      {                                                                 \
        WT x = in[i];                                                   \
        NT trunc = (NT)x;                                               \
        out[i] = (WT)NT_MIN <= x && x <= (WT)NT_MAX                     \
 	  ? trunc                                                       \
	  : x < 0 ? NT_MIN : NT_MAX;                                    \
      }                                                                 \
  }

The below test are passed for this patch.
* The rv64gcv fully regression test.

It is test only patch and obvious up to a point, will commit it
directly if no comments in next 48H.

gcc/testsuite/ChangeLog:

	* gcc.target/riscv/rvv/autovec/unop/vec_sat_data.h: Add test data for
	signed SAT_TRUNC.
	* gcc.target/riscv/rvv/autovec/vec_sat_arith.h: Add test helper macros.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i16-to-i8.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i16.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i8.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i16.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i32.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i8.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i16-to-i8.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i16.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i8.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i16.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i32.c: New test.
	* gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i8.c: New test.

Signed-off-by: Pan Li <pan2.li@intel.com>

14 files changed, 463 insertions, 0 deletions

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_data.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_data.h
index 6b23ec8..a3643c5 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_data.h
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_data.h
@@ -25,6 +25,15 @@ TEST_UNARY_STRUCT(uint16_t, uint64_t)
 
 TEST_UNARY_STRUCT(uint32_t, uint64_t)
 
+TEST_UNARY_STRUCT(int8_t, int16_t)
+TEST_UNARY_STRUCT(int8_t, int32_t)
+TEST_UNARY_STRUCT(int8_t, int64_t)
+
+TEST_UNARY_STRUCT(int16_t, int32_t)
+TEST_UNARY_STRUCT(int16_t, int64_t)
+
+TEST_UNARY_STRUCT(int32_t, int64_t)
+
 TEST_UNARY_STRUCT_DECL(uint8_t, uint16_t) \
   TEST_UNARY_DATA(uint8_t, uint16_t)[] =
 {
@@ -391,4 +400,286 @@ TEST_UNARY_STRUCT_DECL(uint32_t, uint64_t) \
   },
 };
 
+TEST_UNARY_STRUCT_DECL(int8_t, int16_t) \
+  TEST_UNARY_DATA(int8_t, int16_t)[] =
+{
+  {
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+  },
+  {
+    {
+       127,  127,  127,  127,
+       128,  128,  128,  128,
+      -128, -128, -128, -128,
+      -129, -129, -129, -129,
+    },
+    {
+       127,  127,  127,  127,
+       127,  127,  127,  127,
+      -128, -128, -128, -128,
+      -128, -128, -128, -128,
+    },
+  },
+  {
+    {
+       32766,  32766,  32766,  32766,
+       32767,  32767,  32767,  32767,
+      -32767, -32767, -32767, -32767,
+      -32768, -32768, -32768, -32768,
+    },
+    {
+       127,  127,  127,  127,
+       127,  127,  127,  127,
+      -128, -128, -128, -128,
+      -128, -128, -128, -128,
+    },
+  },
+};
+
+TEST_UNARY_STRUCT_DECL(int8_t, int32_t) \
+  TEST_UNARY_DATA(int8_t, int32_t)[] =
+{
+  {
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+  },
+  {
+    {
+       127,  127,  127,  127,
+       128,  128,  128,  128,
+      -128, -128, -128, -128,
+      -129, -129, -129, -129,
+    },
+    {
+       127,  127,  127,  127,
+       127,  127,  127,  127,
+      -128, -128, -128, -128,
+      -128, -128, -128, -128,
+    },
+  },
+  {
+    {
+       2147483646,  2147483646,  2147483646,  2147483646,
+       2147483647,  2147483647,  2147483647,  2147483647,
+      -2147483647, -2147483647, -2147483647, -2147483647,
+      -2147483648, -2147483648, -2147483648, -2147483648,
+    },
+    {
+       127,  127,  127,  127,
+       127,  127,  127,  127,
+      -128, -128, -128, -128,
+      -128, -128, -128, -128,
+    },
+  },
+};
+
+TEST_UNARY_STRUCT_DECL(int8_t, int64_t) \
+  TEST_UNARY_DATA(int8_t, int64_t)[] =
+{
+  {
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+  },
+  {
+    {
+       127,  127,  127,  127,
+       128,  128,  128,  128,
+      -128, -128, -128, -128,
+      -129, -129, -129, -129,
+    },
+    {
+       127,  127,  127,  127,
+       127,  127,  127,  127,
+      -128, -128, -128, -128,
+      -128, -128, -128, -128,
+    },
+  },
+  {
+    {
+        9223372036854775806ll,   9223372036854775806ll,   9223372036854775806ll,   9223372036854775806ll,
+        9223372036854775807ll,   9223372036854775807ll,   9223372036854775807ll,   9223372036854775807ll,
+       -9223372036854775807ll,  -9223372036854775807ll,  -9223372036854775807ll,  -9223372036854775807ll,
+      -9223372036854775808ull, -9223372036854775808ull, -9223372036854775808ull, -9223372036854775808ull,
+    },
+    {
+       127,  127,  127,  127,
+       127,  127,  127,  127,
+      -128, -128, -128, -128,
+      -128, -128, -128, -128,
+    },
+  },
+};
+
+TEST_UNARY_STRUCT_DECL(int16_t, int32_t) \
+  TEST_UNARY_DATA(int16_t, int32_t)[] =
+{
+  {
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+  },
+  {
+    {
+       32767,  32767,  32767,  32767,
+       32768,  32768,  32768,  32768,
+      -32768, -32768, -32768, -32768,
+      -32769, -32769, -32769, -32769,
+    },
+    {
+       32767,  32767,  32767,  32767,
+       32767,  32767,  32767,  32767,
+      -32768, -32768, -32768, -32768,
+      -32768, -32768, -32768, -32768,
+    },
+  },
+  {
+    {
+       2147483646,  2147483646,  2147483646,  2147483646,
+       2147483647,  2147483647,  2147483647,  2147483647,
+      -2147483647, -2147483647, -2147483647, -2147483647,
+      -2147483648, -2147483648, -2147483648, -2147483648,
+    },
+    {
+       32767,  32767,  32767,  32767,
+       32767,  32767,  32767,  32767,
+      -32768, -32768, -32768, -32768,
+      -32768, -32768, -32768, -32768,
+    },
+  },
+};
+
+TEST_UNARY_STRUCT_DECL(int16_t, int64_t) \
+  TEST_UNARY_DATA(int16_t, int64_t)[] =
+{
+  {
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+  },
+  {
+    {
+       32767,  32767,  32767,  32767,
+       32768,  32768,  32768,  32768,
+      -32768, -32768, -32768, -32768,
+      -32769, -32769, -32769, -32769,
+    },
+    {
+       32767,  32767,  32767,  32767,
+       32767,  32767,  32767,  32767,
+      -32768, -32768, -32768, -32768,
+      -32768, -32768, -32768, -32768,
+    },
+  },
+  {
+    {
+        9223372036854775806ll,   9223372036854775806ll,   9223372036854775806ll,   9223372036854775806ll,
+        9223372036854775807ll,   9223372036854775807ll,   9223372036854775807ll,   9223372036854775807ll,
+       -9223372036854775807ll,  -9223372036854775807ll,  -9223372036854775807ll,  -9223372036854775807ll,
+      -9223372036854775808ull, -9223372036854775808ull, -9223372036854775808ull, -9223372036854775808ull,
+    },
+    {
+       32767,  32767,  32767,  32767,
+       32767,  32767,  32767,  32767,
+      -32768, -32768, -32768, -32768,
+      -32768, -32768, -32768, -32768,
+    },
+  },
+};
+
+TEST_UNARY_STRUCT_DECL(int32_t, int64_t) \
+  TEST_UNARY_DATA(int32_t, int64_t)[] =
+{
+  {
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+    {
+      0,  0,  0,  0,
+     -1, -1, -1, -1,
+      1,  1,  1,  1,
+      2,  2,  2,  2,
+    },
+  },
+  {
+    {
+       2147483647,  2147483647,  2147483647,  2147483647,
+       2147483648,  2147483648,  2147483648,  2147483648,
+      -2147483648, -2147483648, -2147483648, -2147483648,
+      -2147483649, -2147483649, -2147483649, -2147483649,
+    },
+    {
+       2147483647,  2147483647,  2147483647,  2147483647,
+       2147483647,  2147483647,  2147483647,  2147483647,
+      -2147483648, -2147483648, -2147483648, -2147483648,
+      -2147483648, -2147483648, -2147483648, -2147483648,
+    },
+  },
+  {
+    {
+        9223372036854775806ll,   9223372036854775806ll,   9223372036854775806ll,   9223372036854775806ll,
+        9223372036854775807ll,   9223372036854775807ll,   9223372036854775807ll,   9223372036854775807ll,
+       -9223372036854775807ll,  -9223372036854775807ll,  -9223372036854775807ll,  -9223372036854775807ll,
+      -9223372036854775808ull, -9223372036854775808ull, -9223372036854775808ull, -9223372036854775808ull,
+    },
+    {
+       2147483647,  2147483647,  2147483647,  2147483647,
+       2147483647,  2147483647,  2147483647,  2147483647,
+      -2147483648, -2147483648, -2147483648, -2147483648,
+      -2147483648, -2147483648, -2147483648, -2147483648,
+    },
+  },
+};
+
 #endif
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i16-to-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i16-to-i8.c
new file mode 100644
index 0000000..dd87dfd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i16-to-i8.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -fdump-rtl-expand-details" } */
+
+#include "../vec_sat_arith.h"
+
+DEF_VEC_SAT_S_TRUNC_FMT_1(int8_t, int16_t, INT8_MIN, INT8_MAX)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
+/* { dg-final { scan-assembler-times {vnclip\.wi} 1 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i16.c
new file mode 100644
index 0000000..caf646f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i16.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -fdump-rtl-expand-details" } */
+
+#include "../vec_sat_arith.h"
+
+DEF_VEC_SAT_S_TRUNC_FMT_1(int16_t, int32_t, INT16_MIN, INT16_MAX)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
+/* { dg-final { scan-assembler-times {vnclip\.wi} 1 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i8.c
new file mode 100644
index 0000000..f06267a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i32-to-i8.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -fdump-rtl-expand-details" } */
+
+#include "../vec_sat_arith.h"
+
+DEF_VEC_SAT_S_TRUNC_FMT_1(int8_t, int32_t, INT8_MIN, INT8_MAX)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
+/* { dg-final { scan-assembler-times {vnclip\.wi} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i16.c
new file mode 100644
index 0000000..f784937
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i16.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -fdump-rtl-expand-details" } */
+
+#include "../vec_sat_arith.h"
+
+DEF_VEC_SAT_S_TRUNC_FMT_1(int16_t, int64_t, INT16_MIN, INT16_MAX)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
+/* { dg-final { scan-assembler-times {vnclip\.wi} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i32.c
new file mode 100644
index 0000000..1e5289c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i32.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -fdump-rtl-expand-details" } */
+
+#include "../vec_sat_arith.h"
+
+DEF_VEC_SAT_S_TRUNC_FMT_1(int32_t, int64_t, INT32_MIN, INT32_MAX)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
+/* { dg-final { scan-assembler-times {vnclip\.wi} 1 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i8.c
new file mode 100644
index 0000000..2fb604b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-1-i64-to-i8.c
@@ -0,0 +1,9 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d -O3 -fdump-rtl-expand-details" } */
+
+#include "../vec_sat_arith.h"
+
+DEF_VEC_SAT_S_TRUNC_FMT_1(int8_t, int64_t, INT8_MIN, INT8_MAX)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
+/* { dg-final { scan-assembler-times {vnclip\.wi} 3 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i16-to-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i16-to-i8.c
new file mode 100644
index 0000000..508cf34
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i16-to-i8.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "../vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T1 int8_t
+#define T2 int16_t
+
+DEF_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, INT8_MIN, INT8_MAX)
+
+#define T                     TEST_UNARY_STRUCT_DECL(T1, T2)
+#define DATA                  TEST_UNARY_DATA_WRAP(T1, T2)
+#define RUN_UNARY(out, in, N) RUN_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, out, in, N)
+
+#include "vec_sat_unary_vv_run.h"
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i16.c
new file mode 100644
index 0000000..3b7c3b6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i16.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "../vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T1 int16_t
+#define T2 int32_t
+
+DEF_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, INT16_MIN, INT16_MAX)
+
+#define T                     TEST_UNARY_STRUCT_DECL(T1, T2)
+#define DATA                  TEST_UNARY_DATA_WRAP(T1, T2)
+#define RUN_UNARY(out, in, N) RUN_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, out, in, N)
+
+#include "vec_sat_unary_vv_run.h"
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i8.c
new file mode 100644
index 0000000..508cf34
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i32-to-i8.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "../vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T1 int8_t
+#define T2 int16_t
+
+DEF_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, INT8_MIN, INT8_MAX)
+
+#define T                     TEST_UNARY_STRUCT_DECL(T1, T2)
+#define DATA                  TEST_UNARY_DATA_WRAP(T1, T2)
+#define RUN_UNARY(out, in, N) RUN_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, out, in, N)
+
+#include "vec_sat_unary_vv_run.h"
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i16.c
new file mode 100644
index 0000000..4a049ce
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i16.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "../vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T1 int16_t
+#define T2 int64_t
+
+DEF_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, INT16_MIN, INT16_MAX)
+
+#define T                     TEST_UNARY_STRUCT_DECL(T1, T2)
+#define DATA                  TEST_UNARY_DATA_WRAP(T1, T2)
+#define RUN_UNARY(out, in, N) RUN_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, out, in, N)
+
+#include "vec_sat_unary_vv_run.h"
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i32.c
new file mode 100644
index 0000000..15b6670
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i32.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "../vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T1 int32_t
+#define T2 int64_t
+
+DEF_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, INT32_MIN, INT32_MAX)
+
+#define T                     TEST_UNARY_STRUCT_DECL(T1, T2)
+#define DATA                  TEST_UNARY_DATA_WRAP(T1, T2)
+#define RUN_UNARY(out, in, N) RUN_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, out, in, N)
+
+#include "vec_sat_unary_vv_run.h"
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i8.c
new file mode 100644
index 0000000..5a1dd85
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/unop/vec_sat_s_trunc-run-1-i64-to-i8.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "../vec_sat_arith.h"
+#include "vec_sat_data.h"
+
+#define T1 int8_t
+#define T2 int64_t
+
+DEF_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, INT8_MIN, INT8_MAX)
+
+#define T                     TEST_UNARY_STRUCT_DECL(T1, T2)
+#define DATA                  TEST_UNARY_DATA_WRAP(T1, T2)
+#define RUN_UNARY(out, in, N) RUN_VEC_SAT_S_TRUNC_FMT_1_WRAP(T1, T2, out, in, N)
+
+#include "vec_sat_unary_vv_run.h"
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vec_sat_arith.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vec_sat_arith.h
index b5ed662..2c98e15 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vec_sat_arith.h
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vec_sat_arith.h
@@ -647,6 +647,23 @@ vec_sat_u_trunc_##NT##_##WT##_fmt_4 (NT *out, WT *in, unsigned limit) \
 }
 #define DEF_VEC_SAT_U_TRUNC_FMT_4_WRAP(NT, WT) DEF_VEC_SAT_U_TRUNC_FMT_4(NT, WT)
 
+#define DEF_VEC_SAT_S_TRUNC_FMT_1(NT, WT, NT_MIN, NT_MAX)             \
+void __attribute__((noinline))                                        \
+vec_sat_s_trunc_##NT##_##WT##_fmt_1 (NT *out, WT *in, unsigned limit) \
+{                                                                     \
+  unsigned i;                                                         \
+  for (i = 0; i < limit; i++)                                         \
+    {                                                                 \
+      WT x = in[i];                                                   \
+      NT trunc = (NT)x;                                               \
+      out[i] = (WT)NT_MIN <= x && x <= (WT)NT_MAX                     \
+	? trunc                                                       \
+	: x < 0 ? NT_MIN : NT_MAX;                                    \
+    }                                                                 \
+}
+#define DEF_VEC_SAT_S_TRUNC_FMT_1_WRAP(NT, WT, NT_MIN, NT_MAX) \
+  DEF_VEC_SAT_S_TRUNC_FMT_1(NT, WT, NT_MIN, NT_MAX)
+
 #define RUN_VEC_SAT_U_TRUNC_FMT_1(NT, WT, out, in, N) \
   vec_sat_u_trunc_##NT##_##WT##_fmt_1 (out, in, N)
 #define RUN_VEC_SAT_U_TRUNC_FMT_1_WRAP(NT, WT, out, in, N) \
@@ -667,4 +684,9 @@ vec_sat_u_trunc_##NT##_##WT##_fmt_4 (NT *out, WT *in, unsigned limit) \
 #define RUN_VEC_SAT_U_TRUNC_FMT_4_WRAP(NT, WT, out, in, N) \
   RUN_VEC_SAT_U_TRUNC_FMT_4(NT, WT, out, in, N)
 
+#define RUN_VEC_SAT_S_TRUNC_FMT_1(NT, WT, out, in, N) \
+  vec_sat_s_trunc_##NT##_##WT##_fmt_1 (out, in, N)
+#define RUN_VEC_SAT_S_TRUNC_FMT_1_WRAP(NT, WT, out, in, N) \
+  RUN_VEC_SAT_S_TRUNC_FMT_1(NT, WT, out, in, N)
+
 #endif