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Subject: [Bug tree-optimization/34330] -ftree-parallelize-loops=4 ICE with the vectorizer also
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------- Comment #11 from razya at il dot ibm dot com  2008-05-15 09:23 -------
(In reply to comment #10)
> Subject: Bug 34330
> Author: rguenth
> Date: Thu May 15 08:21:32 2008
> New Revision: 135329
> URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=135329
> Log:
> 2008-05-15  Richard Guenther  <rguenther@suse.de>
>         PR tree-optimization/34330
>         * tree-ssa-alias.c (get_smt_for): Only assert that accesses
>         through the pointer will alias the SMT.
>         * gcc.dg/torture/pr34330.c: New testcase.
> Added:
>     trunk/gcc/testsuite/gcc.dg/torture/pr34330.c
> Modified:
>     trunk/gcc/ChangeLog
>     trunk/gcc/testsuite/ChangeLog
>     trunk/gcc/tree-ssa-alias.c

/* { dg-do compile } */
/* { dg-options "-O3 -ftree-parallelize-loops=4 -c" } */

struct p7prior_s {

  int   mnum;                   /* number of mat emission Dirichlet mixtures */
  float mq[200];          /* probabilities of mnum components          */
  float m[200][20];  /* match emission terms per mix component    */

};

struct p7prior_s *default_amino_prior(void);
struct p7prior_s *P7AllocPrior(void);

struct p7prior_s *
default_amino_prior(void)
{
  struct p7prior_s *pri;

  static float defmq[5] = {
    0.178091, 0.056591, 0.0960191, 0.0781233, 0.0834977 };
 static float defm[5][6] = {
    { 0.270671, 0.039848, 0.017576, 0.016415, 0.014268,
      0.216147 },
    { 0.021465, 0.010300, 0.011741, 0.010883, 0.385651,
      0.029156 },
    { 0.561459, 0.045448, 0.438366, 0.764167, 0.087364,
      0.583402 },
    { 0.070143, 0.011140, 0.019479, 0.094657, 0.013162,
      0.073732 },
    { 0.041103, 0.014794, 0.005610, 0.010216, 0.153602,
      0.012049 }
  };

  pri = P7AllocPrior();
  pri->mnum  = 5;
  for (q = 0; q < pri->mnum; q++)
    {
      pri->mq[q] = defmq[q];
      for (x = 0; x < 6; x++)
        pri->m[q][x] = defm[q][x];
    }
  return pri;
}

After applying Richard's patch, I'm still getting what seems to be a similar
problem.
prior.c:17: internal compiler error: in add_call_clobber_ops, at
tree-ssa-operands.c:1822
this was tested on power6, when both vectoriztion and autopar are enabled.
no failure when enabled seperately.



-- 

razya at il dot ibm dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |razya at il dot ibm dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34330