message: [MLIR][KernelGen] Fix performance issue for `real` and `imag`
  Cannot load 4 complex numbers simultaneously as they are stored as pairs of
  real and imaginary values. Disable loop unrolling to allow for more
  parallelism. Tested peformance locally and reached parity with CUDA-generated
  kernels.
diff: @@ -282,7 +282,7 @@ gen_kernel_library(
  "f32",
  "f64",
  ],
  - unroll_factors = "4",
  + unroll_factors = "1",
  )
  gen_kernel_library(
  @@ -327,7 +327,7 @@ gen_kernel_library(
  "f32",
  "f64",
  ],
  - unroll_factors = "4",
  + unroll_factors = "1",
  )
  gen_kernel_library(
  