[Bug c/37955] New: internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[Bug c/37955] New: internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[alon dot barlev at gmail dot com]

Attached is a sample from OpenSSL.
When compiled with -O3 the error comes up.

I tried to remove as much code as I could, but it looks like every line I
remove also avoid the error.

I use rev141361


-- 
           Summary: internal compiler error: in vectorizable_store, at tree-
                    vect-transform.c:5447
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: alon dot barlev at gmail dot com
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: x86_64-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug c/37955] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[alon dot barlev at gmail dot com]

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------- Comment #1 from alon dot barlev at gmail dot com  2008-10-29 20:28 -------
Created an attachment (id=16584)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16584&action=view)
sample1.c

sample1.c: In function ‘aep_rsa_mod_exp’:
sample1.c:619: internal compiler error: in vectorizable_store, at
tree-vect-transform.c:5447
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug c/37955] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-10-29 21:12 -------
works for me on x86_64-linux.


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rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug c/37955] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[alon dot barlev at gmail dot com]

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------- Comment #3 from alon dot barlev at gmail dot com  2008-10-30 06:45 -------
Created an attachment (id=16587)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16587&action=view)
sample2.c

Maybe the complete source will be better...

$ x86_64-pc-mingw32-gcc -O3 -c sample2.c
e_aep.c: In function ‘aep_get_connection’:
e_aep.c:862: internal compiler error: in vectorizable_store, at
tree-vect-transform.c:5447
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug c/37955] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[irar at il dot ibm dot com]

------- Comment #4 from irar at il dot ibm dot com  2008-11-06 08:50 -------
> Maybe the complete source will be better...

I don't see any failure with r141636 on x86_64-linux. 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug c/37955] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[alon dot barlev at gmail dot com]

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------- Comment #5 from alon dot barlev at gmail dot com  2008-11-06 19:53 -------
Still:
$ x86_64-pc-mingw32-gcc -O3 sample2.c
e_aep.c: In function ‘aep_get_connection’:
e_aep.c:862: internal compiler error: in vectorizable_store, at
tree-vect-transform.c:5447
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Using binutils CVS head and gcc head (rev#141655).

How can I help more than this?
Can you send a patch to provide some more information?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[ubizjak at gmail dot com]

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------- Comment #6 from ubizjak at gmail dot com  2008-11-06 21:38 -------
It fails on x86_64-pc-linux-gnu host with a cross to x86_64-pc-mingw32:

../gcc-svn/trunk/configure --target=x86_64-pc-mingw32 --enable-languages=c
--disable-bootstrap

Compiling sample2.c:

~/gcc-build-cyg/gcc/cc1 -O3 -quiet pr37955.i
e_aep.c: In function ‘aep_get_connection’:
e_aep.c:862: internal compiler error: in vectorizable_store, at
tree-vect-transform.c:5447
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Confirmed.


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|c                           |tree-optimization
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2008-11-06 21:38:00
               date|                            |
            Summary|internal compiler error: in |[4.4 Regression] internal
                   |vectorizable_store, at tree-|compiler error: in
                   |vect-transform.c:5447       |vectorizable_store, at tree-
                   |                            |vect-transform.c:5447


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[ubizjak at gmail dot com]

------- Comment #7 from ubizjak at gmail dot com  2008-11-06 22:11 -------
Reduced testcase, fails also on x86_64-pc-linux-gnu and i686-pc-linux-gnu/sse2,

gcc version 4.4.0 20081106 (experimental) [trunk revision 141649] (GCC) 

--cut here--
typedef struct
{
  enum { NotConnected = 0 } conn_state;
  unsigned int conn_hndl;
} AEP_CONNECTION_ENTRY;

static AEP_CONNECTION_ENTRY aep_app_conn_table[256];

void aep_mod_exp (void)
{
  int count;

  for (count = 0; count < 256; count++)
    {
      aep_app_conn_table[count].conn_state = NotConnected;
      aep_app_conn_table[count].conn_hndl = 0;
    }
}
--cut here--


-- 

ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   GCC host triplet|i686-pc-linux-gnu           |
 GCC target triplet|x86_64-pc-mingw32           |x86-pc-linux-gnu
      Known to work|                            |4.3.2
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2008-11-07 10:43 -------
This is because the enum gets a different alias set than unsigned int.  We can
do two things:

 - reject the vectype.  This is difficult because we see different vectypes
   for both stores.
 - massage the access pointer to be a ref-all pointer.  This requires
   re-computing aliasing after the vectorizer.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2008-11-06 21:38:00         |2008-11-07 10:43:29
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[rguenth at gcc dot gnu dot org]

------- Comment #9 from rguenth at gcc dot gnu dot org  2008-11-07 10:47 -------
I am testing option 2.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code, wrong-
                   |                            |code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[hp at gcc dot gnu dot org]

------- Comment #10 from hp at gcc dot gnu dot org  2008-11-11 01:00 -------
Is this now a duplicate of PR37742, which according to the reporter still fails
for the original test-case?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[alon dot barlev at gmail dot com]

------- Comment #11 from alon dot barlev at gmail dot com  2008-11-12 09:04 -------
I get the error only if I use -O3.
But the two bugs are related.
Last checked rev#141779


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[ubizjak at gmail dot com]

------- Comment #12 from ubizjak at gmail dot com  2008-11-12 21:31 -------
*** Bug 38096 has been marked as a duplicate of this bug. ***


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ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mariah dot lenox at gmail
                   |                            |dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[jakub at gcc dot gnu dot org]

-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[rguenth at gcc dot gnu dot org]

------- Comment #13 from rguenth at gcc dot gnu dot org  2008-11-28 11:31 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955

[Bug tree-optimization/37955] [4.4 Regression] internal compiler error: in vectorizable_store, at tree-vect-transform.c:5447

[rguenth at gcc dot gnu dot org]

------- Comment #14 from rguenth at gcc dot gnu dot org  2008-11-28 11:32 -------
Subject: Bug 37955

Author: rguenth
Date: Fri Nov 28 11:30:45 2008
New Revision: 142257

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=142257
Log:
2008-11-28  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/37955
        PR tree-optimization/37742
        * tree-vect-transform.c (vectorizable_store): Remove assert for
        compatible aliases.
        (vectorizable_load): Likewise.

        * gcc.c-torture/compile/pr37955.c: New testcase.
        * gcc.c-torture/compile/pr37742-3.c: Likewise.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr37742-3.c
    trunk/gcc/testsuite/gcc.c-torture/compile/pr37955.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-vect-transform.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37955