removed native_exp2.cl

Author: t4c1

libclc/ptx-nvidiacl/libspirv/math/native_exp2.cl

@@ -14,39 +14,4 @@
 #define __CLC_FUNCTION __spirv_ocl_native_exp2
 #define __CLC_BUILTIN __nv_exp2
 #define __CLC_BUILTIN_F __CLC_XCONCAT(__CLC_BUILTIN, f)
-
-#ifdef cl_khr_fp16
-#pragma OPENCL EXTENSION cl_khr_fp16 : enable
-
-int __clc_nvvm_reflect_arch();
-
-_CLC_DEF _CLC_OVERLOAD half __spirv_ocl_native_exp2(half x) {
-  if (__clc_nvvm_reflect_arch() >= 750) {
-    return __nvvm_ex2_approx_f16(x);
-  }
-  float upcast = x;
-  return __spirv_ocl_native_exp2(upcast);
-}
-
-_CLC_DEF _CLC_OVERLOAD half2 __spirv_ocl_native_exp2(half2 x) {
-  if (__clc_nvvm_reflect_arch() >= 750) {
-    return __nvvm_ex2_approx_f16x2(x);
-  }
-  float upcast0 = x[0];
-  float upcast1 = x[1];
-  half2 res;
-  res.s0 = __spirv_ocl_native_exp2(upcast0);
-  res.s1 = __spirv_ocl_native_exp2(upcast1);
-  return res;
-}
-
-_CLC_UNARY_VECTORIZE_HAVE2(_CLC_OVERLOAD _CLC_DEF, half,
-                           __spirv_ocl_native_exp2, half)
-
-#endif // cl_khr_fp16
-
-// Undef halfs before uncluding unary builtins, as they are handled above.
-#ifdef cl_khr_fp16
-#undef cl_khr_fp16
-#endif // cl_khr_fp16
 #include <math/unary_builtin.inc>