message: [XLA] Fix indentation in comment in EmitRowReduction.
diff: @@ -1495,7 +1495,8 @@ Status IrEmitterUnnested::EmitRowReduction(
  // for (int element_id_in_z_tile = 0; element_id_in_z_tile < z_tile_size;
  // ++element_id_in_z_tile) {
  // z = z_in_tiles * z_tile_size + element_id_in_z_tile;
  - // for (int element_id_in_x_tile = 0;element_id_in_x_tile < x_tile_size;
  + // for (int element_id_in_x_tile = 0;
  + // element_id_in_x_tile < x_tile_size;
  // ++element_id_in_x_tile, x += warpSize) {
  // partial_result = Reducer(partial_result, input[z][y][x]);
  // }
  @@ -1506,8 +1507,7 @@ Status IrEmitterUnnested::EmitRowReduction(
  // ++element_id_in_z_tile) {
  // z = z_in_tiles * z_tile_size + element_id_in_z_tile;
  // for (int element_id_in_x_tile = 0; element_id_in_x_tile <
  - // x_tile_size;
  - // ++element_id_in_tile, x += warpSize) {
  + // x_tile_size; ++element_id_in_tile, x += warpSize) {
  // if (x < width)
  // partial_result = Reducer(partial_result, input[z][y][x]);
  // }
  @@ -1558,8 +1558,7 @@ Status IrEmitterUnnested::EmitRowReduction(
  x_tile, ir_builder_.getInt64(kWarpSize), "lane_id");
  // The x-location of the last element in this z-x-tile.
  - // last_x = lane_id + warpSize * (x_tile_size - 1 + warp_id *
  - // x_tile_size);
  + // last_x = lane_id + warpSize * (x_tile_size - 1 + warp_id * x_tile_size);
  llvm::Value* last_x = ir_builder_.CreateNSWAdd(
  lane_id, ir_builder_.CreateNSWMul(
  ir_builder_.getInt64(kWarpSize),
  @@ -1586,8 +1585,8 @@ Status IrEmitterUnnested::EmitRowReduction(
  "x_tile",
  /*start=*/0, /*end=*/x_tile_loop_bound, /*step=*/1,
  [&](llvm::Value* x_indvar) -> Status {
  - // x = lane_id + warpSize * (element_id_in_x_tile + warp_id *
  - // x_tile_size);
  + // x = lane_id +
  + // warpSize * (element_id_in_x_tile + warp_id * x_tile_size);
  llvm::Value* x = ir_builder_.CreateNSWAdd(
  lane_id,
  ir_builder_.CreateNSWMul(
  