dist/gcc/tree-ssa-loop-ivopts.c

459   tree var_before;	/* The variable used for it before increment.  */
868   if (cand->var_before)
871       print_generic_expr (file, cand->var_before, TDF_SLIM);
3143 	    cand->var_before = create_tmp_var_raw (TREE_TYPE (base), "doloop");
3145 	    cand->var_before = create_tmp_var_raw (TREE_TYPE (base), "ivtmp");
3146 	  cand->var_after = cand->var_before;
3363 	      cand->var_before = iv->ssa_name;
3914     return cand->var_before;
5506 	  || operand_equal_p (*control_var, cand->var_before, 0)))
5898        || !SSA_NAME_VAR (cand->var_before)
5899        || DECL_ARTIFICIAL (SSA_NAME_VAR (cand->var_before)))
7126       name_info (data, cand->var_before)->preserve_biv = true;
7129       /* Rewrite the increment so that it uses var_before directly.  */
7136   gimple_add_tmp_var (cand->var_before);
7141 	     cand->var_before, data->current_loop,
7142 	     &incr_pos, after, &cand->var_before, &cand->var_after);
7213 	  if (gimple_assign_rhs1 (use->stmt) == cand->var_before)
7215 	  else if (gimple_assign_rhs2 (use->stmt) == cand->var_before)