[AArch64] Use target builtin instead of __builtin_sqrt for vsqrt_f64

	* config/aarch64/aarch64-simd-builtins.def (sqrt): Use BUILTIN_VDQF_DF.
	* config/aarch64/arm_neon.h (vsqrt_f64): Use __builtin_aarch64_sqrtdf
	instead of __builtin_sqrt.

From-SVN: r220395

gcc/ChangeLog

+2015-02-04  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	* config/aarch64/aarch64-simd-builtins.def (sqrt): Use BUILTIN_VDQF_DF.
+	* config/aarch64/arm_neon.h (vsqrt_f64): Use __builtin_aarch64_sqrtdf
+	instead of __builtin_sqrt.
+
 2015-02-04  Ilya Enkovich  <ilya.enkovich@intel.com>
 
 	* varasm.c (do_assemble_alias): Follow transparent alias

gcc/config/aarch64/aarch64-simd-builtins.def

@@ -41,7 +41,7 @@
 
   BUILTIN_VDC (COMBINE, combine, 0)
   BUILTIN_VB (BINOP, pmul, 0)
-  BUILTIN_VDQF (UNOP, sqrt, 2)
+  BUILTIN_VDQF_DF (UNOP, sqrt, 2)
   BUILTIN_VD_BHSI (BINOP, addp, 0)
   VAR1 (UNOP, addp, 0, di)
   BUILTIN_VDQ_BHSI (UNOP, clrsb, 2)

gcc/config/aarch64/arm_neon.h

@@ -21994,7 +21994,7 @@ vsqrtq_f32 (float32x4_t a)
 __extension__ static __inline float64x1_t __attribute__ ((__always_inline__))
 vsqrt_f64 (float64x1_t a)
 {
-  return (float64x1_t) { __builtin_sqrt (a[0]) };
+  return (float64x1_t) { __builtin_aarch64_sqrtdf (a[0]) };
 }
 
 __extension__ static __inline float64x2_t __attribute__ ((__always_inline__))