message: Don't use xla::Add on PRED types in tf-xla bridge for TileOp
  We are working on disallowing xla::Add on PRED types because they can be
  confusing. This is a prerequiste for that to not fail over in the new
  shape check.
diff: @@ -96,7 +96,11 @@ class TileOp : public XlaOpKernel {
  // operation broadcast semantics.
  auto broadcasted_zero = xla::Broadcast(
  XlaHelpers::Zero(ctx->builder(), ctx->input_type(0)), output_shape);
  + if (ctx->input_type(0) == DT_BOOL) {
  + ctx->SetOutput(0, xla::Or(broadcasted_zero, input));
  + } else {
  ctx->SetOutput(0, xla::Add(broadcasted_zero, input));
  + }
  return;
  }
  