[Bug tree-optimization/34445] [4.3 Regression] internal compiler error: in cost_for_stmt, at tree-vect-transform.c:98

[dorit at gcc dot gnu dot org]

------- Comment #4 from dorit at gcc dot gnu dot org  2007-12-16 13:06 -------
testing this patch: 

*** tree-vect-transform.c       (revision 130987)
--- tree-vect-transform.c       (working copy)
*************** vect_estimate_min_profitable_iters (loop
*** 197,214 ****
        factor = 1;

        for (si = bsi_start (bb); !bsi_end_p (si); bsi_next (&si))
!         {
!           tree stmt = bsi_stmt (si);
!           stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
!           if (!STMT_VINFO_RELEVANT_P (stmt_info)
!               && !STMT_VINFO_LIVE_P (stmt_info))
!             continue;
!           scalar_single_iter_cost += cost_for_stmt (stmt) * factor;
!           vec_inside_cost += STMT_VINFO_INSIDE_OF_LOOP_COST (stmt_info) *
factor;
          /* FIXME: for stmts in the inner-loop in outer-loop vectorization,
             some of the "outside" costs are generated inside the outer-loop. 
*/
!           vec_outside_cost += STMT_VINFO_OUTSIDE_OF_LOOP_COST (stmt_info);
!         }
      }

    /* Add additional cost for the peeled instructions in prologue and epilogue
--- 197,215 ----
        factor = 1;

        for (si = bsi_start (bb); !bsi_end_p (si); bsi_next (&si))
!       {
!         tree stmt = bsi_stmt (si);
!         stmt_vec_info stmt_info = vinfo_for_stmt (stmt);
!         /* Skip stmts that are not vectorized inside the loop.  */
!         if (!STMT_VINFO_RELEVANT_P (stmt_info)
!             && STMT_VINFO_DEF_TYPE (stmt_info) != vect_reduction_def)
!           continue;
!         scalar_single_iter_cost += cost_for_stmt (stmt) * factor;
!         vec_inside_cost += STMT_VINFO_INSIDE_OF_LOOP_COST (stmt_info) *
factor;
          /* FIXME: for stmts in the inner-loop in outer-loop vectorization,
             some of the "outside" costs are generated inside the outer-loop. 
*/
!         vec_outside_cost += STMT_VINFO_OUTSIDE_OF_LOOP_COST (stmt_info);
!       }
      }

    /* Add additional cost for the peeled instructions in prologue and epilogue


(It fixes both testcases)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34445