[Bug tree-optimization/23625] New: ICE: in bsi_after_labels, at tree-flow-inline.h:758

[Bug tree-optimization/23625] New: ICE: in bsi_after_labels, at tree-flow-inline.h:758

[micis at gmx dot de]

When I compile qt334 with the actual snapshot (20050826) of gcc41 I get an ICE
when I use -O2 -ftree-loop-linear -ftree-vectorize.

last working snapshot is:   gcc-4.1-20050723
first failing snapshot is:  gcc-4.1-20050730

Michael Cieslinski

gcc41m -c -O2 -ftree-loop-linear -ftree-vectorize -o jquant2.o jquant2.i
../../../../src/3rdparty/libjpeg/jquant2.c: In function 'fill_inverse_cmap':
../../../../src/3rdparty/libjpeg/jquant2.c:859: internal compiler error: in 
bsi_after_labels, at tree-flow-inline.h:758
Please submit a full bug report, with preprocessed source if appropriate.

gcc41m -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.1-20050826/configure --prefix=/usr/local/gcc41m --
program-suffix=41m --with-arch=opteron --enable-languages=c,c++ --enable-
checking
Thread model: posix
gcc version 4.1.0 20050826 (experimental)

-- 
           Summary: ICE: in bsi_after_labels, at tree-flow-inline.h:758
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: micis at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[micis at gmx dot de]

------- Additional Comments From micis at gmx dot de  2005-08-29 15:26 -------
Created an attachment (id=9613)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9613&action=view)
preprocessed source


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
      Known to fail|                            |4.1.0
      Known to work|                            |4.0.0
            Summary|ICE: in bsi_after_labels, at|[4.1 Regression] ICE: in
                   |tree-flow-inline.h:758      |bsi_after_labels, at tree-
                   |                            |flow-inline.h:758
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-29 16:10 -------
Confirmed, reduced testcase:
typedef long INT32;
void find_best_colors ()
{
int ic0, ic1, ic2;
INT32 * bptr;
INT32 dist1;
INT32 dist2;
INT32 xx1;
for (ic0 = (1<<(5 -3))-1;ic0 >= 0;ic0--)
{
  for (ic1 = (1<<(6 -3))-1;ic1 >= 0;ic1--)
  {
    dist2 = dist1;
     for (ic2 = (1<<(5 -3))-1;ic2 >= 0;ic2--)
     {
        *bptr = dist2;
        bptr++;
     }
     dist1 += xx1;
  }
}
}

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-08-29 16:10:14
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-31 21:21 -------
This is a bug in ifcvt:
#0  internal_error (gmsgid=0xb1eb1f "in %s, at %s:%d") at /home/pinskia/src/onetest/gcc/gcc/
diagnostic.c:534
#1  0x000000000060c3f2 in fancy_abort (file=0xbe7b20 "/home/pinskia/src/onetest/gcc/gcc/tree-
flow-inline.h", line=758, function=0xbe7b6b "bsi_after_labels")
    at /home/pinskia/src/onetest/gcc/gcc/diagnostic.c:590
#2  0x0000000000a23ce7 in bsi_after_labels (bb=0x2a95c25c00) at tree-flow-inline.h:758
#3  0x0000000000a22ece in process_phi_nodes (loop=0xe680c0) at /home/pinskia/src/onetest/gcc/
gcc/tree-if-conv.c:836
#4  0x0000000000a22fae in combine_blocks (loop=0xe680c0) at /home/pinskia/src/onetest/gcc/gcc/
tree-if-conv.c:868
#5  0x0000000000a217fa in tree_if_conversion (loop=0xe680c0, for_vectorizer=1 '\001') at /home/
pinskia/src/onetest/gcc/gcc/tree-if-conv.c:201
#6  0x0000000000a2382b in main_tree_if_conversion () at /home/pinskia/src/onetest/gcc/gcc/tree-
if-conv.c:1113
#7  0x0000000000946100 in execute_one_pass (pass=0xd1d520) at /home/pinskia/src/onetest/gcc/
gcc/passes.c:808


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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-31 21:24 -------
It also ICEs on powerpc-darwin.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
 GCC target triplet|x86_64-*-linux-gnu          |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[janis at gcc dot gnu dot org]

------- Additional Comments From janis at gcc dot gnu dot org  2005-09-09 21:50 -------
The testcase starts failing with this patch from irar:

  http://gcc.gnu.org/ml/gcc-cvs/2005-07/msg00888.html

Ira, if this was a merge from a branch then I can do a regression hunt on
that branch, if that would be useful.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

Re: [Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[Andrew Pinski]

> 
> 
> ------- Additional Comments From janis at gcc dot gnu dot org  2005-09-09 21:50 -------
> The testcase starts failing with this patch from irar:
> 
>   http://gcc.gnu.org/ml/gcc-cvs/2005-07/msg00888.html
> 
> Ira, if this was a merge from a branch then I can do a regression hunt on
> that branch, if that would be useful.
This really a latent bug in bsi_after_labels.

-- Pinski

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[pinskia at physics dot uc dot edu]

------- Additional Comments From pinskia at physics dot uc dot edu  2005-09-09 21:54 -------
Subject: Re:  [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

> 
> 
> ------- Additional Comments From janis at gcc dot gnu dot org  2005-09-09 21:50 -------
> The testcase starts failing with this patch from irar:
> 
>   http://gcc.gnu.org/ml/gcc-cvs/2005-07/msg00888.html
> 
> Ira, if this was a merge from a branch then I can do a regression hunt on
> that branch, if that would be useful.
This really a latent bug in bsi_after_labels.

-- Pinski


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-09-27 21:45 -------
Subject: Bug 23625

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	dpatel@gcc.gnu.org	2005-09-27 21:44:55

Modified files:
	gcc            : ChangeLog tree-flow-inline.h 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: pr23625.c 

Log message:
	PR tree-optimization/23625
	* tree-flow-inline.h (bsi_after_labels): Remove, first statement is
	LABEL_EXPR, assertion check.
	
	* gcc.dg/PR23625.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.10034&r2=2.10035
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow-inline.h.diff?cvsroot=gcc&r1=2.57&r2=2.58
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.6107&r2=1.6108
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr23625.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625

[Bug tree-optimization/23625] [4.1 Regression] ICE: in bsi_after_labels, at tree-flow-inline.h:758

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-27 23:45 -------
Fixed.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23625