narrow_conv_backprop  342 lj_opt_narrow.c       int count = narrow_conv_backprop(nc, ir->op1, depth);
narrow_conv_backprop  343 lj_opt_narrow.c       count += narrow_conv_backprop(nc, ir->op2, depth);
narrow_conv_backprop  419 lj_opt_narrow.c     if (narrow_conv_backprop(&nc, fins->op1, 0) <= 1)