[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[tbm at cyrius dot com]

------- Comment #1 from tbm at cyrius dot com  2006-07-02 11:13 -------
Created an attachment (id=11798)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11798&action=view)
test case


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] New: [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[tbm at cyrius dot com]

[ Forwarded from http://bugs.debian.org/376084 ]

We're seeing the following ICE on ia64 with gcc 4.1:

merulo% g++-4.1 -c -O2 000.c
000.c: In member function 'k3d::mesh*
libk3dprimitives::lawn_implementation::on_create_geometry()':
000.c:7597: internal compiler error: in add_insn_before, at emit-rtl.c:3479
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-4.1/README.Bugs>.
Preprocessed source stored into /tmp/ccifNJOx.out file, please attach this to
your bugreport.
merulo% g++-4.1 -c -O1 000.c
merulo% g++-4.0 -c -O2 000.c
merulo% /usr/lib/gcc-snapshot/bin/g++ -c -O2 000.c
merulo%


-- 
           Summary: [4.1 regression] ICE in add_insn_before, at emit-
                    rtl.c:3479
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com
 GCC build triplet: ia64-linux-gnu
GCC target triplet: ia64-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
   Target Milestone|---                         |4.1.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2006-07-05 13:36 -------
With checking enabled we have

obj2/gcc> ./cc1plus -quiet -O2 t.ii
t.ii: In static member function 'static IntType
boost::random::const_mod<IntType, m>::mult_schrage(IntType, IntType) [with
IntType = int, IntType m = 2147483647]':
t.ii:7335: error: too many outgoing branch edges from bb 3
t.ii:7335: internal compiler error: verify_flow_info failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

maybe related to PR27291.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2006-07-06 10:01 -------
Created an attachment (id=11843)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11843&action=view)
testcase

reduced C++ testcase attached.  C testcase:

void foo(void)
{
  int value47D2367, valueD2287;
  unsigned int jD2283;
  value47D2367 = x->x;
  jD2283 = 0;

L0:
  if (value47D2367 > 0) goto L3; else goto L17;

L17:
  valueD2287 = value47D2367;

L2:
  valueD2287 = valueD2287 + 2147483647;
  if (valueD2287 > 0) goto L3; else goto L2;

L3:
  jD2283 = jD2283 + 1;
  if (jD2283 != 607) goto L0; else goto L6;

L6:
  return;
}

gcc> ./cc1 -O2 -quiet t.i
t.i: In function 'foo':
t.i:26: error: NOTE_INSN_BASIC_BLOCK is missing for block 8
t.i:26: error: NOTE_INSN_BASIC_BLOCK 92 in middle of basic block 8
t.i:26: error: too many outgoing branch edges from bb 2
t.i:26: internal compiler error: verify_flow_info failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2006-07-06 10:02 -------
So, confirmed.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-07-06 10:02:13
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2006-07-06 10:07 -------
The reduced testcases are with checking only.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-checking


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2006-07-06 10:10 -------
ICE is after rtl loop2 optimizer, looks like it requires a doloop target.


-- 

rguenth at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2006-07-06 10:11 -------
Really looks like a dup of PR27291, but the patch for that doesn't apply to the
4.1 branch.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[sje at cup dot hp dot com]

------- Comment #8 from sje at cup dot hp dot com  2006-07-28 21:45 -------
If we apply the patch from
http://gcc.gnu.org/ml/gcc-patches/2005-11/msg02094.html first then we can apply
the patch for PR 27291.  I did this on the 4.1 branch and the bug went away.  I
have not done a full bootstrap with the two patches but will do that over the
weekend.


-- 

sje at cup dot hp dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sje at cup dot hp dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[debian-gcc at lists dot debian dot org]

------- Comment #9 from debian-gcc at lists dot debian dot org  2006-07-29 22:28 -------
Created an attachment (id=11967)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11967&action=view)
patch

combined and bootstrapped with the two patches mentioned in #8 with no
regressions on i486-linux-gnu.

  Matthias


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[sje at cup dot hp dot com]

------- Comment #10 from sje at cup dot hp dot com  2006-07-31 16:19 -------
My weekend bootstrapping and testing on ia64-hp-hpux11.23 and ia64 Linux on the
4.1 branch showed no regressions.  I think I should send email to gcc-patches
before checking it in on the 4.1 branch since the first patch is not
technically a regression fix.  Unless someone else wants to handle the checkin
on the 4.1 branch?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[sje at gcc dot gnu dot org]

------- Comment #11 from sje at gcc dot gnu dot org  2006-08-03 16:35 -------
Subject: Bug 28221

Author: sje
Date: Thu Aug  3 16:35:31 2006
New Revision: 115904

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=115904
Log:
        PR rtl-optimization/28221
        Backport from mainline.
        2005-11-30  Nathan Sidwell  <nathan@codesourcery.com>
        * loop-doloop.c (add_test): Only add jump note if we did emit a jump.
        2006-05-01  Zdenek Dvorak  <dvorakz@suse.cz>
        PR rtl-optimization/27291
        * loop-doloop.c (add_test, doloop_modify): Handle the case condition
        is folded to a constant.

Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/loop-doloop.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221

[Bug rtl-optimization/28221] [4.1 regression] ICE in add_insn_before, at emit-rtl.c:3479

[sje at cup dot hp dot com]

------- Comment #12 from sje at cup dot hp dot com  2006-08-03 16:39 -------
Fixed by backporting Nathan's patch and the fix for PR 27291.


-- 

sje at cup dot hp dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28221