contrib/gcc/loop-iv.c

1992   rtx op0, op1, delta, step, bound, may_xform, tmp, tmp0, tmp1;
2201      do it if we first check that upper bound is greater or equal to
2202      lower bound, their difference is constant c modulo step and that
2233 	      bound = simplify_gen_binary (PLUS, comp_mode, mmin, step);
2234 	      bound = simplify_gen_binary (MINUS, comp_mode, bound, delta);
2235 	      bound = lowpart_subreg (mode, bound, comp_mode);
2238 						   bound, tmp);
2241 						       bound, tmp);
2245 	      bound = simplify_gen_binary (MINUS, comp_mode, mmax, step);
2246 	      bound = simplify_gen_binary (PLUS, comp_mode, bound, delta);
2247 	      bound = lowpart_subreg (mode, bound, comp_mode);
2250 						   tmp, bound);
2253 						       tmp, bound);
2275 	  /* We are going to lose some information about upper bound on
2340       bound = GEN_INT (((unsigned HOST_WIDEST_INT) 1 << (size - 1 ) << 1) - 1);
2350       desc->niter_expr = simplify_gen_binary (AND, mode, tmp, bound);
2366 	  bound = simplify_gen_binary (MINUS, mode, mode_mmax,
2377 						    tmp1, bound);
2389 						    tmp1, bound);
2411 	  bound = simplify_gen_binary (PLUS, mode, mode_mmin,
2421 						    bound, tmp0);
2433 						    bound, tmp0);
2661 	  fprintf (dump_file, "  upper bound: ");