vshrn_n.c: New file.

2015-06-19  Christophe Lyon  <christophe.lyon@linaro.org>

	* gcc.target/aarch64/advsimd-intrinsics/vshrn_n.c: New file.

From-SVN: r224664

gcc/testsuite/ChangeLog

 2015-06-19  Christophe Lyon  <christophe.lyon@linaro.org>
 
+	* gcc.target/aarch64/advsimd-intrinsics/vshrn_n.c: New file.
+
+2015-06-19  Christophe Lyon  <christophe.lyon@linaro.org>
+
 	* gcc.target/aarch64/advsimd-intrinsics/vshl_n.c: New file.
 
 2015-06-19  Christophe Lyon  <christophe.lyon@linaro.org>

gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vshrn_n.c

+#include <arm_neon.h>
+#include "arm-neon-ref.h"
+#include "compute-ref-data.h"
+
+/* Expected results.  */
+VECT_VAR_DECL(expected,int,8,8) [] = { 0xf8, 0xf8, 0xf9, 0xf9,
+				       0xfa, 0xfa, 0xfb, 0xfb };
+VECT_VAR_DECL(expected,int,16,4) [] = { 0xfff8, 0xfff8, 0xfff9, 0xfff9 };
+VECT_VAR_DECL(expected,int,32,2) [] = { 0xfffffffc, 0xfffffffc };
+VECT_VAR_DECL(expected,uint,8,8) [] = { 0xfc, 0xfc, 0xfc, 0xfc,
+					0xfd, 0xfd, 0xfd, 0xfd };
+VECT_VAR_DECL(expected,uint,16,4) [] = { 0xfffe, 0xfffe, 0xfffe, 0xfffe };
+VECT_VAR_DECL(expected,uint,32,2) [] = { 0xfffffffe, 0xfffffffe };
+
+#define TEST_MSG "VSHRN_N"
+void exec_vshrn_n (void)
+{
+  /* Basic test: y=vshrn_n(x,v), then store the result.  */
+#define TEST_VSHRN_N(T1, T2, W, W2, N, V)				\
+  VECT_VAR(vector_res, T1, W2, N) =					\
+    vshrn_n_##T2##W(VECT_VAR(vector, T1, W, N),				\
+		    V);							\
+  vst1_##T2##W2(VECT_VAR(result, T1, W2, N), VECT_VAR(vector_res, T1, W2, N))
+
+  /* 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, uint, 16, 8);
+  DECL_VARIABLE(vector, uint, 32, 4);
+  DECL_VARIABLE(vector, uint, 64, 2);
+
+  DECL_VARIABLE(vector_res, int, 8, 8);
+  DECL_VARIABLE(vector_res, int, 16, 4);
+  DECL_VARIABLE(vector_res, int, 32, 2);
+  DECL_VARIABLE(vector_res, uint, 8, 8);
+  DECL_VARIABLE(vector_res, uint, 16, 4);
+  DECL_VARIABLE(vector_res, uint, 32, 2);
+
+  clean_results ();
+
+  VLOAD(vector, buffer, q, int, s, 16, 8);
+  VLOAD(vector, buffer, q, int, s, 32, 4);
+  VLOAD(vector, buffer, q, int, s, 64, 2);
+  VLOAD(vector, buffer, q, uint, u, 16, 8);
+  VLOAD(vector, buffer, q, uint, u, 32, 4);
+  VLOAD(vector, buffer, q, uint, u, 64, 2);
+
+  /* Choose shift amount arbitrarily.  */
+  TEST_VSHRN_N(int, s, 16, 8, 8, 1);
+  TEST_VSHRN_N(int, s, 32, 16, 4, 1);
+  TEST_VSHRN_N(int, s, 64, 32, 2, 2);
+  TEST_VSHRN_N(uint, u, 16, 8, 8, 2);
+  TEST_VSHRN_N(uint, u, 32, 16, 4, 3);
+  TEST_VSHRN_N(uint, u, 64, 32, 2, 3);
+
+#define CMT ""
+  CHECK(TEST_MSG, int, 8, 8, PRIx8, expected, CMT);
+  CHECK(TEST_MSG, int, 16, 4, PRIx16, expected, CMT);
+  CHECK(TEST_MSG, int, 32, 2, PRIx32, expected, 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_vshrn_n ();
+  return 0;
+}