[Patch ARM-AArch64/testsuite Neon intrinsics 08/13] Add vqrshrun_n tests.

[Christophe Lyon <christophe.lyon@linaro.org>]

diff --git a/gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vqrshrun_n.c b/gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vqrshrun_n.c
new file mode 100644
index 0000000..f5e431e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vqrshrun_n.c
@@ -0,0 +1,189 @@
+#include <arm_neon.h>
+#include "arm-neon-ref.h"
+#include "compute-ref-data.h"
+
+/* Expected values of cumulative_saturation flag with negative unput.  */
+int VECT_VAR(expected_cumulative_sat_neg,int,16,8) = 0;
+int VECT_VAR(expected_cumulative_sat_neg,int,32,4) = 0;
+int VECT_VAR(expected_cumulative_sat_neg,int,64,2) = 1;
+
+/* Expected results with negative input.  */
+VECT_VAR_DECL(expected_neg,uint,8,8) [] = { 0x0, 0x0, 0x0, 0x0,
+					    0x0, 0x0, 0x0, 0x0 };
+VECT_VAR_DECL(expected_neg,uint,16,4) [] = { 0x0, 0x0, 0x0, 0x0 };
+VECT_VAR_DECL(expected_neg,uint,32,2) [] = { 0x0, 0x0 };
+
+/* Expected values of cumulative_saturation flag with max input value
+   shifted by 1.  */
+int VECT_VAR(expected_cumulative_sat_max_sh1,int,16,8) = 1;
+int VECT_VAR(expected_cumulative_sat_max_sh1,int,32,4) = 1;
+int VECT_VAR(expected_cumulative_sat_max_sh1,int,64,2) = 1;
+
+/* Expected results with max input value shifted by 1.  */
+VECT_VAR_DECL(expected_max_sh1,uint,8,8) [] = { 0xff, 0xff, 0xff, 0xff,
+						0xff, 0xff, 0xff, 0xff };
+VECT_VAR_DECL(expected_max_sh1,uint,16,4) [] = { 0xffff, 0xffff,
+						 0xffff, 0xffff };
+VECT_VAR_DECL(expected_max_sh1,uint,32,2) [] = { 0xffffffff, 0xffffffff };
+VECT_VAR_DECL(expected_max_sh1,uint,64,1) [] = { 0x3333333333333333 };
+
+/* Expected values of cumulative_saturation flag with max input value
+   shifted by max amount.  */
+int VECT_VAR(expected_cumulative_sat_max_shmax,int,16,8) = 0;
+int VECT_VAR(expected_cumulative_sat_max_shmax,int,32,4) = 0;
+int VECT_VAR(expected_cumulative_sat_max_shmax,int,64,2) = 0;
+
+/* Expected results with max input value shifted by max amount.  */
+VECT_VAR_DECL(expected_max_shmax,uint,8,8) [] = { 0x80, 0x80, 0x80, 0x80,
+						  0x80, 0x80, 0x80, 0x80 };
+VECT_VAR_DECL(expected_max_shmax,uint,16,4) [] = { 0x8000, 0x8000,
+						   0x8000, 0x8000 };
+VECT_VAR_DECL(expected_max_shmax,uint,32,2) [] = { 0x80000000, 0x80000000 };
+
+/* Expected values of cumulative_saturation flag with min input value
+   shifted by max amount.  */
+int VECT_VAR(expected_cumulative_sat_min_shmax,int,16,8) = 1;
+int VECT_VAR(expected_cumulative_sat_min_shmax,int,32,4) = 1;
+int VECT_VAR(expected_cumulative_sat_min_shmax,int,64,2) = 1;
+
+/* Expected results with min input value shifted by max amount.  */
+VECT_VAR_DECL(expected_min_shmax,uint,8,8) [] = { 0x0, 0x0, 0x0, 0x0,
+						  0x0, 0x0, 0x0, 0x0 };
+VECT_VAR_DECL(expected_min_shmax,uint,16,4) [] = { 0x0, 0x0, 0x0, 0x0 };
+VECT_VAR_DECL(expected_min_shmax,uint,32,2) [] = { 0x0, 0x0 };
+
+/* Expected values of cumulative_saturation flag with inputs in usual
+   range.  */
+int VECT_VAR(expected_cumulative_sat,int,16,8) = 0;
+int VECT_VAR(expected_cumulative_sat,int,32,4) = 1;
+int VECT_VAR(expected_cumulative_sat,int,64,2) = 0;
+
+/* Expected results with inputs in usual range.  */
+VECT_VAR_DECL(expected,uint,8,8) [] = { 0x49, 0x49, 0x49, 0x49,
+					0x49, 0x49, 0x49, 0x49 };
+VECT_VAR_DECL(expected,uint,16,4) [] = { 0x0, 0x0, 0x0, 0x0 };
+VECT_VAR_DECL(expected,uint,32,2) [] = { 0xdeadbf, 0xdeadbf };
+
+#define INSN vqrshrun_n
+#define TEST_MSG "VQRSHRUN_N"
+
+#define FNNAME1(NAME) void exec_ ## NAME (void)
+#define FNNAME(NAME) FNNAME1(NAME)
+
+FNNAME (INSN)
+{
+  /* Basic test: y=vqrshrun_n(x,v), then store the result.  */
+#define TEST_VQRSHRUN_N2(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT) \
+  Set_Neon_Cumulative_Sat(0, VECT_VAR(vector_res, uint, W2, N));	\
+  VECT_VAR(vector_res, uint, W2, N) =					\
+    INSN##_##T2##W(VECT_VAR(vector, T1, W, N),				\
+		   V);							\
+  vst1_u##W2(VECT_VAR(result, uint, W2, N),				\
+	     VECT_VAR(vector_res, uint, W2, N));			\
+  CHECK_CUMULATIVE_SAT(TEST_MSG, T1, W, N, EXPECTED_CUMULATIVE_SAT, CMT)
+
+  /* Two auxliary macros are necessary to expand INSN */
+#define TEST_VQRSHRUN_N1(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT) \
+  TEST_VQRSHRUN_N2(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT)
+
+#define TEST_VQRSHRUN_N(T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT) \
+  TEST_VQRSHRUN_N1(INSN, T1, T2, W, W2, N, V, EXPECTED_CUMULATIVE_SAT, CMT)
+
+
+  /* vector is twice as large as vector_res.  */
+  DECL_VARIABLE(vector, int, 16, 8);
+  DECL_VARIABLE(vector, int, 32, 4);
+  DECL_VARIABLE(vector, int, 64, 2);
+
+  DECL_VARIABLE(vector_res, uint, 8, 8);
+  DECL_VARIABLE(vector_res, uint, 16, 4);
+  DECL_VARIABLE(vector_res, uint, 32, 2);
+
+  clean_results ();
+
+  /* Fill input vector with negative values, to check saturation on
+     limits.  */
+  VDUP(vector, q, int, s, 16, 8, -2);
+  VDUP(vector, q, int, s, 32, 4, -3);
+  VDUP(vector, q, int, s, 64, 2, -4);
+
+  /* Choose shift amount arbitrarily.   */
+#define CMT " (negative input)"
+  TEST_VQRSHRUN_N(int, s, 16, 8, 8, 3, expected_cumulative_sat_neg, CMT);
+  TEST_VQRSHRUN_N(int, s, 32, 16, 4, 4, expected_cumulative_sat_neg, CMT);
+  TEST_VQRSHRUN_N(int, s, 64, 32, 2, 2, expected_cumulative_sat_neg, CMT);
+
+  CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_neg, CMT);
+  CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_neg, CMT);
+  CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_neg, CMT);
+
+
+  /* Fill input vector with max value, to check saturation on
+     limits.  */
+  VDUP(vector, q, int, s, 16, 8, 0x7FFF);
+  VDUP(vector, q, int, s, 32, 4, 0x7FFFFFFF);
+  VDUP(vector, q, int, s, 64, 2, 0x7FFFFFFFFFFFFFFFLL);
+
+  /* shift by 1.  */
+#undef CMT
+#define CMT " (check cumulative saturation: shift by 1)"
+  TEST_VQRSHRUN_N(int, s, 16, 8, 8, 1, expected_cumulative_sat_max_sh1, CMT);
+  TEST_VQRSHRUN_N(int, s, 32, 16, 4, 1, expected_cumulative_sat_max_sh1, CMT);
+  TEST_VQRSHRUN_N(int, s, 64, 32, 2, 1, expected_cumulative_sat_max_sh1, CMT);
+
+  CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_max_sh1, CMT);
+  CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_max_sh1, CMT);
+  CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_max_sh1, CMT);
+
+
+  /* shift by max.  */
+#undef CMT
+#define CMT " (check cumulative saturation: shift by max, positive input)"
+  TEST_VQRSHRUN_N(int, s, 16, 8, 8, 8, expected_cumulative_sat_max_shmax, CMT);
+  TEST_VQRSHRUN_N(int, s, 32, 16, 4, 16, expected_cumulative_sat_max_shmax, CMT);
+  TEST_VQRSHRUN_N(int, s, 64, 32, 2, 32, expected_cumulative_sat_max_shmax, CMT);
+
+  CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_max_shmax, CMT);
+  CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_max_shmax, CMT);
+  CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_max_shmax, CMT);
+
+
+  /* Fill input vector with min value, to check saturation on limits.  */
+  VDUP(vector, q, int, s, 16, 8, 0x8000);
+  VDUP(vector, q, int, s, 32, 4, 0x80000000);
+  VDUP(vector, q, int, s, 64, 2, 0x8000000000000000LL);
+
+  /* shift by max  */
+#undef CMT
+#define CMT " (check cumulative saturation: shift by max, negative input)"
+  TEST_VQRSHRUN_N(int, s, 16, 8, 8, 8, expected_cumulative_sat_min_shmax, CMT);
+  TEST_VQRSHRUN_N(int, s, 32, 16, 4, 16, expected_cumulative_sat_min_shmax, CMT);
+  TEST_VQRSHRUN_N(int, s, 64, 32, 2, 32, expected_cumulative_sat_min_shmax, CMT);
+
+  CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected_min_shmax, CMT);
+  CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected_min_shmax, CMT);
+  CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected_min_shmax, CMT);
+
+
+  /* Fill input vector with positive values, to check normal case.  */
+  VDUP(vector, q, int, s, 16, 8, 0x1234);
+  VDUP(vector, q, int, s, 32, 4, 0x87654321);
+  VDUP(vector, q, int, s, 64, 2, 0xDEADBEEF);
+
+  /* shift arbitrary amount.  */
+#undef CMT
+#define CMT ""
+  TEST_VQRSHRUN_N(int, s, 16, 8, 8, 6, expected_cumulative_sat, CMT);
+  TEST_VQRSHRUN_N(int, s, 32, 16, 4, 7, expected_cumulative_sat, CMT);
+  TEST_VQRSHRUN_N(int, s, 64, 32, 2, 8, expected_cumulative_sat, CMT);
+
+  CHECK(TEST_MSG, uint, 8, 8, PRIx8, expected, CMT);
+  CHECK(TEST_MSG, uint, 16, 4, PRIx16, expected, CMT);
+  CHECK(TEST_MSG, uint, 32, 2, PRIx32, expected, CMT);
+}
+
+int main (void)
+{
+  exec_vqrshrun_n ();
+  return 0;
+}
-- 
2.1.4