message: Add build target for tf.Sign kernel.
  It already works for f32 and f64.
diff: @@ -147,18 +147,6 @@ tf_cuda_cc_test(
  # ],
  # )
  -gen_kernel_library(
  - name = "tanh",
  - same_shape = "0,1",
  - tile_size = "256",
  - types = [
  - "f16",
  - "f32",
  - "f64",
  - ],
  - unroll_factors = "4",
  -)
  -
  gen_kernel_library(
  name = "abs",
  same_shape = "0,1",
  @@ -257,6 +245,18 @@ gen_kernel_library(
  unroll_factors = "4",
  )
  +gen_kernel_library(
  + name = "sign",
  + same_shape = "0,1",
  + tile_size = "256",
  + types = [
  + # TODO(b/162577610): Add bf16, f16, i32, i64, c64 and c128.
  + "f32",
  + "f64",
  + ],
  + unroll_factors = "4",
  +)
  +
  gen_kernel_library(
  name = "sqrt",
  same_shape = "0,1",
  @@ -269,6 +269,18 @@ gen_kernel_library(
  unroll_factors = "4",
  )
  +gen_kernel_library(
  + name = "tanh",
  + same_shape = "0,1",
  + tile_size = "256",
  + types = [
  + "f16",
  + "f32",
  + "f64",
  + ],
  + unroll_factors = "4",
  +)
  +
  gen_unranked_kernel_library(
  name = "abs_unranked",
  tile_size = "256",
  