[Bug tree-optimization/21266] New: verify_ssa failed

[Bug tree-optimization/21266] New: verify_ssa failed

[tkoenig at gcc dot gnu dot org]

$ cat minlc.c
void minlc(float *a, int n)
{
    int i;
    float mv = a[0];
    for (i=1; i<n; i++)
    {
        if(a[i] < mv)
            mv = a[i];
    }
}
$ gcc -O2 -ftree-vectorize -ftree-vectorizer-verbose=3 -S minlc.c
minlc.c: In function 'minlc':
minlc.c:2: error: Definition in block 2 follows the use
for SSA_NAME: i_13 in statement:
mv_1 = n_7 > i_13 ? mv_12 : mv_20;
minlc.c:2: internal compiler error: verify_ssa failed.
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
$ gcc -v
Using built-in specs.
Target: ia64-unknown-linux-gnu
Configured with: ../gcc-4.1-20050424/configure --prefix=/home/zfkts --enable-
languages=c,f95
Thread model: posix
gcc version 4.1.0 20050424 (experimental)

-- 
           Summary: verify_ssa failed
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tkoenig at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: ia64-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266

[Bug tree-optimization/21266] [4.1 Regression] verify_ssa failed

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-28 16:24 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
      Known to fail|                            |4.1.0
      Known to work|                            |4.0.0
   Last reconfirmed|0000-00-00 00:00:00         |2005-04-28 16:24:39
               date|                            |
            Summary|verify_ssa failed           |[4.1 Regression] verify_ssa
                   |                            |failed
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266

[Bug tree-optimization/21266] [4.1 Regression] verify_ssa failed

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-28 22:29 -------
*** Bug 21272 has been marked as a duplicate of this bug. ***

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266

[Bug tree-optimization/21266] [4.1 Regression] verify_ssa failed

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-28 22:35 -------
>From the dup bug:
The failures start with this patch from dpatel:
                                                                                
  http://gcc.gnu.org/ml/gcc-cvs/2005-04/msg01172.html


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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266

[Bug tree-optimization/21266] [4.1 Regression] verify_ssa failed

[janis at gcc dot gnu dot org]

------- Additional Comments From janis at gcc dot gnu dot org  2005-04-29 17:50 -------
dpatel checked in a fix referencing PR 21272.  That patch fixes the problems
I reported in 21272.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266

[Bug tree-optimization/21266] [4.1 Regression] verify_ssa failed

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-04-29 18:51 -------
Fixed.  Add the PR number too.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266

[Bug tree-optimization/21266] [4.1 Regression] verify_ssa failed

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-29 18:52 -------
Subject: Bug 21266

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pinskia@gcc.gnu.org	2005-04-29 18:51:58

Modified files:
	gcc            : ChangeLog 

Log message:
	2005-04-29  Devang Patel  <dpatel@apple.com>
	
	PR tree-optimization/21272
	PR tree-optimization/21266
	* tree-if-conv.c (find_phi_replacement_condition): Fix think-o.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8533&r2=2.8534



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266

[Bug tree-optimization/21266] [4.1 Regression] verify_ssa failed

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-01 01:06 -------
*** Bug 21311 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tprince at computer dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21266