[gcc r13-5886] RISC-V: Add constraint tests

[Kito Cheng <kito@gcc.gnu.org>]

https://gcc.gnu.org/g:345b2aa4eb3be99f93ab5d13e454308704293890

commit r13-5886-g345b2aa4eb3be99f93ab5d13e454308704293890
Author: Ju-Zhe Zhong <juzhe.zhong@rivai.ai>
Date:   Tue Feb 7 14:39:27 2023 +0800

    RISC-V: Add constraint tests
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/rvv/base/binop_vx_constraint-120.c: New test.

Diff:
---
 .../gcc.target/riscv/rvv/base/binop_vx_constraint-120.c  | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/base/binop_vx_constraint-120.c b/gcc/testsuite/gcc.target/riscv/rvv/base/binop_vx_constraint-120.c
new file mode 100644
index 00000000000..809b185dd65
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/base/binop_vx_constraint-120.c
@@ -0,0 +1,16 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv32gcv -mabi=ilp32 -O3" } */
+#include "riscv_vector.h"
+
+vint16mf4_t test___riscv_vwmulsu_vx_i16mf4(vbool64_t mask, vint16mf4_t merge, vint8mf8_t op1,int8_t op2,size_t vl)
+{
+  return __riscv_vwmulsu_vx_i16mf4_tumu(mask,merge,op1,0,vl);
+}
+
+vint16mf4_t test___riscv_vwmul_vx_i16mf4(vbool64_t mask, vint16mf4_t merge, vint8mf8_t op1,int8_t op2,size_t vl)
+{
+  return __riscv_vwmul_vx_i16mf4_tumu(mask,merge,op1,0,vl);
+}
+
+/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e8,\s*mf8,\s*t[au],\s*m[au]\s+vwmul\.vx\s+v[0-9]+,\s*v[0-9]+,zero} 1 } } */
+/* { dg-final { scan-assembler-times {vsetvli\s+zero,\s*[a-x0-9]+,\s*e8,\s*mf8,\s*t[au],\s*m[au]\s+vwmulsu\.vx\s+v[0-9]+,\s*v[0-9]+,zero} 1 } } */