[Bug tree-optimization/22088] [4.1 regression] ICE with -ftree-vectorize

["hubicka at ucw dot cz" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From hubicka at ucw dot cz  2005-06-17 13:53 -------
Subject: Re:  [4.1 regression] ICE with -ftree-vectorize

> 
> ------- Additional Comments From dorit at il dot ibm dot com  2005-06-17 12:58 -------
> > bug.c: In function 'foo':
> > bug.c:4: internal compiler error: in get_bb_copy, at cfg.c:1078
> 
> a bunch of vectorizer testcases are failing with this error on 
> i686-pc-linux-gnu and powerpc-darwin

THe attached patch should fix it.  I wonder why it didn't show up in my
i686 regtest originally?  (are the vectorizer testcases disabled by
default or something?)


Index: tree-vect-transform.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/tree-vect-transform.c,v
retrieving revision 2.25
diff -c -3 -p -r2.25 tree-vect-transform.c
*** tree-vect-transform.c	10 Jun 2005 14:51:44 -0000	2.25
--- tree-vect-transform.c	17 Jun 2005 13:13:52 -0000
*************** vect_transform_loop (loop_vec_info loop_
*** 2048,2053 ****
--- 2048,2054 ----
    if (vect_print_dump_info (REPORT_DETAILS, UNKNOWN_LOC))
      fprintf (vect_dump, "=== vec_transform_loop ===");
  
+   initialize_original_copy_tables ();
    
    /* Peel the loop if there are data refs with unknown alignment.
       Only one data ref with unknown store is allowed.  */
*************** vect_transform_loop (loop_vec_info loop_
*** 2139,2144 ****
--- 2140,2147 ----
       until all the loops have been transformed?  */
    update_ssa (TODO_update_ssa);
  
+   free_original_copy_tables ();
+ 
    if (vect_print_dump_info (REPORT_VECTORIZED_LOOPS, LOOP_LOC (loop_vinfo)))
      fprintf (vect_dump, "LOOP VECTORIZED.");
  }


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22088