[gcc(refs/vendors/riscv/heads/gcc-14-with-riscv-opts)] RISC-V: Add testcases for unsigned .SAT_SUB vector form 3

https://gcc.gnu.org/g:cf7d79d0cba4f37905563694069907c20674a8be commit cf7d79d0cba4f37905563694069907c20674a8be Author: Pan Li Date: Wed Jun 19 18:56:51 2024 +0800 RISC-V: Add testcases for unsigned .SAT_SUB vector form 3 After the middle-end support the form 3 of unsigned SAT_SUB

[gcc(refs/vendors/riscv/heads/gcc-14-with-riscv-opts)] RISC-V: Add testcases for unsigned .SAT_SUB vector form 3

https://gcc.gnu.org/g:bee6a1a5ac883bd46255beac7d697720bc31e1f9 commit bee6a1a5ac883bd46255beac7d697720bc31e1f9 Author: Pan Li Date: Wed Jun 19 18:56:51 2024 +0800 RISC-V: Add testcases for unsigned .SAT_SUB vector form 3 After the middle-end support the form 3 of unsigned SAT_SUB