!6652 GPU sqrt rsqrt support fp16

Merge pull request !6652 from VectorSL/sqrt

mindspore/ccsrc/backend/kernel_compiler/gpu/math/unary_op_gpu_kernel.cc

@@ -44,8 +44,12 @@ MS_REG_GPU_KERNEL_ONE(Square, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddO
                       UnaryOpGpuKernel, half)
 MS_REG_GPU_KERNEL_ONE(Sqrt, KernelAttr().AddInputAttr(kNumberTypeFloat32).AddOutputAttr(kNumberTypeFloat32),
                       UnaryOpGpuKernel, float)
+MS_REG_GPU_KERNEL_ONE(Sqrt, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutputAttr(kNumberTypeFloat16),
+                      UnaryOpGpuKernel, half)
 MS_REG_GPU_KERNEL_ONE(Rsqrt, KernelAttr().AddInputAttr(kNumberTypeFloat32).AddOutputAttr(kNumberTypeFloat32),
                       UnaryOpGpuKernel, float)
+MS_REG_GPU_KERNEL_ONE(Rsqrt, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutputAttr(kNumberTypeFloat16),
+                      UnaryOpGpuKernel, half)
 MS_REG_GPU_KERNEL_ONE(Sin, KernelAttr().AddInputAttr(kNumberTypeFloat32).AddOutputAttr(kNumberTypeFloat32),
                       UnaryOpGpuKernel, float)
 MS_REG_GPU_KERNEL_ONE(Sin, KernelAttr().AddInputAttr(kNumberTypeFloat16).AddOutputAttr(kNumberTypeFloat16),