[gcc(refs/vendors/riscv/heads/gcc-15-with-riscv-opts)] RISC-V: Add test for vec_duplicate + vssubu.vv combine case 1 with GR2VR cost 0, 1 and 2

[Jeff Law]

https://gcc.gnu.org/g:173903106dec4dd54e8504d988f64551f5403b4f

commit 173903106dec4dd54e8504d988f64551f5403b4f
Author: Pan Li <pan2.li@intel.com>
Date:   Fri Jun 27 09:09:08 2025 +0800

    RISC-V: Add test for vec_duplicate + vssubu.vv combine case 1 with GR2VR cost 0, 1 and 2
    
    Add asm dump check test for vec_duplicate + vssubu.vv combine to
    vssubu.vx, with the GR2VR cost is 0, 1 and 2.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u16.c: Add asm check
            for vssubu.vx combine.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u32.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u64.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u8.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u16.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u32.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u64.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u8.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u16.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u32.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u64.c: Ditto.
            * gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u8.c: Ditto.
    
    Signed-off-by: Pan Li <pan2.li@intel.com>
    (cherry picked from commit ff87aefc061d7de3b233bfe034fb29cc253f77a9)

Diff:
---
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u16.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u32.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u64.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u8.c  | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u16.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u32.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u64.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u8.c  | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u16.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u32.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u64.c | 2 ++
 gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u8.c  | 2 ++
 12 files changed, 24 insertions(+)

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u16.c
index de10d66a1b23..afb5a8513a98 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u16.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u16.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X8)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X8)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u32.c
index 2e59da06c979..a907e9b72222 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u32.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u32.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X4)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X4)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -29,3 +30,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vremu.vx} } } */
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u64.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u64.c
index 064ed1f2e892..efabf9930f0f 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u64.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u64.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler-not {vsaddu.vx} } } */
+/* { dg-final { scan-assembler-not {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u8.c
index 6a8ff29b49ff..7b2b08817e10 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u8.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-4-u8.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X8)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X8)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u16.c
index 7c789a5c73e1..da1b1bec6bd1 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u16.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u16.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X8)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X8)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u32.c
index 2807e5850bc1..b7ec6c9d315b 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u32.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u32.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X4)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X4)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler-not {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u64.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u64.c
index 63159750faf6..dce78b15e45c 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u64.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u64.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler-not {vsaddu.vx} } } */
+/* { dg-final { scan-assembler-not {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u8.c
index 127c49ec79ab..c5c6fb8f311e 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u8.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-5-u8.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X8)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X8)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u16.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u16.c
index 0ca661cd7b1f..5952a7c89901 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u16.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u16.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X8)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X8)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u32.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u32.c
index f66eccd6acd9..5bbc585c9d84 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u32.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u32.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X4)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X4)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X4)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler-not {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u64.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u64.c
index 01b693c573b2..255ae62f7f61 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u64.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u64.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY)
 
 /* { dg-final { scan-assembler-not {vadd.vx} } } */
 /* { dg-final { scan-assembler-not {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler-not {vmaxu.vx} } } */
 /* { dg-final { scan-assembler-not {vminu.vx} } } */
 /* { dg-final { scan-assembler-not {vsaddu.vx} } } */
+/* { dg-final { scan-assembler-not {vssubu.vx} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u8.c
index 91f92457d7a7..63cd4490c73d 100644
--- a/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u8.c
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/vx_vf/vx-6-u8.c
@@ -18,6 +18,7 @@ DEF_VX_BINARY_CASE_3_WRAP(T, MAX_FUNC_1_WARP(T), max, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_0_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, MIN_FUNC_1_WARP(T), min, VX_BINARY_FUNC_BODY_X8)
 DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BODY_X8)
+DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_SUB_FUNC_WRAP(T), sat_sub, VX_BINARY_FUNC_BODY_X8)
 
 /* { dg-final { scan-assembler {vadd.vx} } } */
 /* { dg-final { scan-assembler {vsub.vx} } } */
@@ -30,3 +31,4 @@ DEF_VX_BINARY_CASE_3_WRAP(T, SAT_U_ADD_FUNC_WRAP(T), sat_add, VX_BINARY_FUNC_BOD
 /* { dg-final { scan-assembler {vmaxu.vx} } } */
 /* { dg-final { scan-assembler {vminu.vx} } } */
 /* { dg-final { scan-assembler {vsaddu.vx} } } */
+/* { dg-final { scan-assembler {vssubu.vx} } } */