RISC-V: Add testcases for form 2 of scalar signed SAT_SUB

Form 2:
  #define DEF_SAT_S_SUB_FMT_2(T, UT, MIN, MAX) \
  T __attribute__((noinline))                  \
  sat_s_sub_##T##_fmt_1 (T x, T y)             \
  {                                            \
    T minus = (UT)x - (UT)y;                   \
    if ((x ^ y) >= 0 || (minus ^ x) >= 0)      \
      return minus;                            \
    return x < 0 ? MIN : MAX;                  \
  }

DEF_SAT_S_SUB_FMT_2(int8_t, uint8_t, INT8_MIN, INT8_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/sat_arith.h: Add test helper macros.
	* gcc.target/riscv/sat_s_sub-2-i16.c: New test.
	* gcc.target/riscv/sat_s_sub-2-i32.c: New test.
	* gcc.target/riscv/sat_s_sub-2-i64.c: New test.
	* gcc.target/riscv/sat_s_sub-2-i8.c: New test.
	* gcc.target/riscv/sat_s_sub-run-2-i16.c: New test.
	* gcc.target/riscv/sat_s_sub-run-2-i32.c: New test.
	* gcc.target/riscv/sat_s_sub-run-2-i64.c: New test.
	* gcc.target/riscv/sat_s_sub-run-2-i8.c: New test.

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

0 files changed, 0 insertions, 0 deletions