[Bug tree-optimization/21448] New: [4.1 Regression] ICE in estimate_num_insns_1, at tree-inline.c:1433

[Bug tree-optimization/21448] New: [4.1 Regression] ICE in estimate_num_insns_1, at tree-inline.c:1433

[jsm28 at gcc dot gnu dot org]

The following test failures have appeared on mainline between 20050506 and
20050507.  All are "internal compiler error: in estimate_num_insns_1, at
tree-inline.c:1433".

On i686-pc-linux-gnu and ia64-hpux:

FAIL: gcc.dg/vect/vect-ifcvt-2.c (test for excess errors)
FAIL: gcc.dg/vect/vect-ifcvt-3.c (test for excess errors)
FAIL: gcc.dg/vect/vect-ifcvt-4.c (test for excess errors)
FAIL: gcc.dg/vect/vect-ifcvt-5.c (test for excess errors)
FAIL: gcc.dg/vect/vect-ifcvt-6.c (test for excess errors)
FAIL: gcc.dg/vect/vect-ifcvt-7.c (test for excess errors)
FAIL: gcc.dg/vect/vect-ifcvt-9.c (test for excess errors)
FAIL: gcc.dg/vect/vect-ifcvt-9.c scan-tree-dump-times vectorized 1 loops 2

On i686-pc-linux-gnu (not a new failure on ia64-hpux because of bug 21050, but
the ICE has become the same as the one above):

FAIL: gcc.dg/vect/vect-none.c (test for excess errors)

On ia64-hpux (both -milp32 and -mlp64), same ICE:

FAIL: gcc.dg/tree-ssa/ifc-20040816-1.c (test for excess errors)

gcc-testresults shows at least some of these tests failing on other platforms,
which may be the same failure.

-- 
           Summary: [4.1 Regression] ICE in estimate_num_insns_1, at tree-
                    inline.c:1433
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jsm28 at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21448

[Bug tree-optimization/21448] [4.1 Regression] ICE in estimate_num_insns_1, at tree-inline.c:1433

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-07 20:38 -------
I think this was caused by:
2005-05-06  Zdenek Dvorak  <dvorakz@suse.cz>
        
        PR tree-optimization/19401
        * tree-flow.h (tree_unroll_loops_completely): Declaration changed.
        * tree-ssa-loop-ivcanon.c (enum unroll_level): New.
        (estimated_unrolled_size): New function.
        (try_unroll_loop_completely, canonicalize_loop_induction_variables,
        tree_unroll_loops_completely): Always unroll loops if the code size
        does not increase.
        * tree-ssa-loop.c (tree_complete_unroll): Indicate whether all
        loops should be unrolled completely.
        (gate_tree_complete_unroll): Run complete unrolling unconditionally.

But is really a latent bug.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21448

[Bug tree-optimization/21448] [4.1 Regression] ICE in estimate_num_insns_1, at tree-inline.c:1433

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-07 22:42 -------
Confirmed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-05-07 22:42:11
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21448

[Bug tree-optimization/21448] [4.1 Regression] ICE in estimate_num_insns_1, at tree-inline.c:1433

[rakdver at gcc dot gnu dot org]

------- Additional Comments From rakdver at gcc dot gnu dot org  2005-05-15 11:16 -------
Might get fixed by

http://gcc.gnu.org/ml/gcc-patches/2005-05/msg01378.html

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21448

[Bug tree-optimization/21448] [4.1 Regression] ICE in estimate_num_insns_1, at tree-inline.c:1433

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-16 11:25 -------
Fixed.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21448