message: Disable unrolling for Pow and Div kernels.
  It turns out it is faster without unrolling.
diff: @@ -707,7 +707,6 @@ gpu_kernel_library(
  "i16",
  "i64",
  ],
  - unroll_factors = "4",
  )
  gpu_kernel_library(
  @@ -988,7 +987,6 @@ gpu_kernel_library(
  "f64",
  "i64",
  ],
  - unroll_factors = "4",
  )
  gpu_kernel_library(
  