[ARM/AArch64 Testsuite]Add test of vcvt{,_high}_i{f32_f16,f16_f32}

	* gcc.target/aarch64/advsimd-intrinsics/vcvt_f16.c: New.
	* lib/target-supports.exp
	(check_effective_target_arm_neon_fp16_hw): New.

From-SVN: r227555

gcc/testsuite/ChangeLog

 2015-09-08  Alan Lawrence  <alan.lawrence@arm.com>
 
+	* gcc.target/aarch64/advsimd-intrinsics/vcvt_f16.c: New.
+	* lib/target-supports.exp
+	(check_effective_target_arm_neon_fp16_hw): New.
+
+2015-09-08  Alan Lawrence  <alan.lawrence@arm.com>
+
 	* gcc.target/aarch64/advsimd-intrinsics/advsimd-intrinsics.exp:
 	Set additional_flags for neon-fp16 if supported, else fallback to neon.
 

gcc/testsuite/gcc.target/aarch64/advsimd-intrinsics/vcvt_f16.c

+/* { dg-require-effective-target arm_neon_fp16_hw { target { arm*-*-* } } } */
+#include <arm_neon.h>
+#include "arm-neon-ref.h"
+#include "compute-ref-data.h"
+#include <math.h>
+
+/* Expected results for vcvt.  */
+VECT_VAR_DECL (expected,hfloat,32,4) [] = { 0x41800000, 0x41700000,
+					    0x41600000, 0x41500000 };
+VECT_VAR_DECL (expected,hfloat,16,4) [] = { 0x3e00, 0x4100, 0x4300, 0x4480 };
+
+/* Expected results for vcvt_high_f32_f16.  */
+VECT_VAR_DECL (expected_high,hfloat,32,4) [] = { 0xc1400000, 0xc1300000,
+						 0xc1200000, 0xc1100000 };
+/* Expected results for vcvt_high_f16_f32.  */
+VECT_VAR_DECL (expected_high,hfloat,16,8) [] = { 0x4000, 0x4000, 0x4000, 0x4000,
+						 0xcc00, 0xcb80, 0xcb00, 0xca80 };
+
+void
+exec_vcvt (void)
+{
+  clean_results ();
+
+#define TEST_MSG vcvt_f32_f16
+  {
+    VECT_VAR_DECL (buffer_src, float, 16, 4) [] = { 16.0, 15.0, 14.0, 13.0 };
+
+    DECL_VARIABLE (vector_src, float, 16, 4);
+
+    VLOAD (vector_src, buffer_src, , float, f, 16, 4);
+    DECL_VARIABLE (vector_res, float, 32, 4) =
+	vcvt_f32_f16 (VECT_VAR (vector_src, float, 16, 4));
+    vst1q_f32 (VECT_VAR (result, float, 32, 4),
+	       VECT_VAR (vector_res, float, 32, 4));
+
+    CHECK_FP (TEST_MSG, float, 32, 4, PRIx32, expected, "");
+  }
+#undef TEST_MSG
+
+  clean_results ();
+
+#define TEST_MSG vcvt_f16_f32
+  {
+    VECT_VAR_DECL (buffer_src, float, 32, 4) [] = { 1.5, 2.5, 3.5, 4.5 };
+    DECL_VARIABLE (vector_src, float, 32, 4);
+
+    VLOAD (vector_src, buffer_src, q, float, f, 32, 4);
+    DECL_VARIABLE (vector_res, float, 16, 4) =
+      vcvt_f16_f32 (VECT_VAR (vector_src, float, 32, 4));
+    vst1_f16 (VECT_VAR (result, float, 16, 4),
+	      VECT_VAR (vector_res, float, 16 ,4));
+
+    CHECK_FP (TEST_MSG, float, 16, 4, PRIx16, expected, "");
+  }
+#undef TEST_MSG
+
+#if defined (__aarch64__)
+  clean_results ();
+
+#define TEST_MSG "vcvt_high_f32_f16"
+  {
+    DECL_VARIABLE (vector_src, float, 16, 8);
+    VLOAD (vector_src, buffer, q, float, f, 16, 8);
+    DECL_VARIABLE (vector_res, float, 32, 4);
+    VECT_VAR (vector_res, float, 32, 4) =
+      vcvt_high_f32_f16 (VECT_VAR (vector_src, float, 16, 8));
+    vst1q_f32 (VECT_VAR (result, float, 32, 4),
+	       VECT_VAR (vector_res, float, 32, 4));
+    CHECK_FP (TEST_MSG, float, 32, 4, PRIx32, expected_high, "");
+  }
+#undef TEST_MSG
+  clean_results ();
+
+#define TEST_MSG "vcvt_high_f16_f32"
+  {
+    DECL_VARIABLE (vector_low, float, 16, 4);
+    VDUP (vector_low, , float, f, 16, 4, 2.0);
+
+    DECL_VARIABLE (vector_src, float, 32, 4);
+    VLOAD (vector_src, buffer, q, float, f, 32, 4);
+
+    DECL_VARIABLE (vector_res, float, 16, 8) =
+      vcvt_high_f16_f32 (VECT_VAR (vector_low, float, 16, 4),
+			 VECT_VAR (vector_src, float, 32, 4));
+    vst1q_f16 (VECT_VAR (result, float, 16, 8),
+	       VECT_VAR (vector_res, float, 16, 8));
+
+    CHECK_FP (TEST_MSG, float, 16, 8, PRIx16, expected_high, "");
+  }
+#endif
+}
+
+int
+main (void)
+{
+  exec_vcvt ();
+  return 0;
+}

gcc/testsuite/lib/target-supports.exp

@@ -2807,6 +2807,21 @@ proc check_effective_target_arm_neon_fp16_ok { } {
 		check_effective_target_arm_neon_fp16_ok_nocache]
 }
 
+proc check_effective_target_arm_neon_fp16_hw { } {
+    if {! [check_effective_target_arm_neon_fp16_ok] } {
+	return 0
+    }
+    global et_arm_neon_fp16_flags
+    check_runtime_nocache arm_neon_fp16_hw {
+	int
+	main (int argc, char **argv)
+	{
+	  asm ("vcvt.f32.f16 q1, d0");
+	  return 0;
+	}
+    } $et_arm_neon_fp16_flags
+}
+
 proc add_options_for_arm_neon_fp16 { flags } {
     if { ! [check_effective_target_arm_neon_fp16_ok] } {
 	return "$flags"