[Bug rtl-optimization/34085] New: ICE with -freorder-blocks-and-partition

[Bug rtl-optimization/34085] New: ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

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When compiling the testacse attached with -O3 -fprofile-use
-freorder-blocks-and-partition flags, I get the following error: (I use the
profiling information given by first compiling with -fprofile-generate and than
running the executable)

tmp.c: In function âmainâ:
tmp.c:36: error: insn 186 outside of basic blocks has non-NULL bb field
tmp.c:36: internal compiler error: verify_flow_info failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

This ICE seems to happen when not all of the bbs are in the same partition
(hot/cold).


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           Summary: ICE with -freorder-blocks-and-partition
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: eres at il dot ibm dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #1 from eres at il dot ibm dot com  2007-11-13 18:21 -------
Created an attachment (id=14545)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14545&action=view)
The testcase


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[steven at gcc dot gnu dot org]

------- Comment #2 from steven at gcc dot gnu dot org  2007-11-13 18:24 -------
Can you please also attach your profile information and give the exact compiler
revision ID that you used to create that information?  That way, people without
access to POWER can still help debug this problem.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #3 from eres at il dot ibm dot com  2007-11-13 18:30 -------
Created an attachment (id=14546)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14546&action=view)
the testcase (please ignore the previous testcase it has been uploaded by
mistake)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #4 from eres at il dot ibm dot com  2007-11-13 18:34 -------
(In reply to comment #2)
> Can you please also attach your profile information and give the exact compiler
> revision ID that you used to create that information?  That way, people without
> access to POWER can still help debug this problem.

Sure - 
gcc version 4.3.0 20071028 (experimental) (GCC)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #5 from eres at il dot ibm dot com  2007-11-15 12:04 -------
It seems that verify_flow_info complains about the following note,
which is generated in the partitioning phase:

(note 234 232 172 11 NOTE_INSN_SWITCH_TEXT_SECTIONS)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[steven at gcc dot gnu dot org]

------- Comment #6 from steven at gcc dot gnu dot org  2007-11-15 12:21 -------
I can't reproduce this on x86*.
Again, please attach the profile information and state the exact compiler
revision you used to generate this profile information.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #7 from eres at il dot ibm dot com  2007-11-15 12:29 -------
(In reply to comment #6)
> I can't reproduce this on x86*.
> Again, please attach the profile information and state the exact compiler
> revision you used to generate this profile information.


Sorry - I am working on r129702.
What do you mean by profile information (a dump file)?

Thanks.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #8 from eres at il dot ibm dot com  2007-11-15 14:17 -------
When disabling rest_of_handle_reorder_blocks (bbro) the ICE disappears. (it
seems that it is not caused due to the partitioning - bbpart)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[steven at gcc dot gnu dot org]

------- Comment #9 from steven at gcc dot gnu dot org  2007-11-15 14:49 -------
I mean the files you generate with -fprofile-generate.

I expect this to be fully blamable on the partitioning code, and I would like
to work in fixing this.  But you have to attach the profile information you
have generated, or no-one can debug this unless he/she has access to POWER.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #10 from eres at il dot ibm dot com  2007-11-15 15:02 -------
(In reply to comment #9)
> I mean the files you generate with -fprofile-generate.
> I expect this to be fully blamable on the partitioning code, and I would like
> to work in fixing this.  But you have to attach the profile information you
> have generated, or no-one can debug this unless he/she has access to POWER.

Sure, I'll attached the gcno file.
Please let me know if you need more information to retore the ICE.

Thanks


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #11 from eres at il dot ibm dot com  2007-11-15 15:05 -------
Created an attachment (id=14556)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14556&action=view)
File generated by -fprofile-generate


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #12 from eres at il dot ibm dot com  2007-11-16 06:48 -------
Created an attachment (id=14562)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14562&action=view)
gcda file


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #13 from eres at il dot ibm dot com  2007-11-16 06:52 -------
Created an attachment (id=14563)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=14563&action=view)
gcno (with the correct filename)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[steven at gcc dot gnu dot org]

------- Comment #14 from steven at gcc dot gnu dot org  2007-11-16 21:15 -------
I still can't reproduce it.  What does your gcc -v say?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #15 from eres at il dot ibm dot com  2007-11-17 06:24 -------
(In reply to comment #14)
> I still can't reproduce it.  What does your gcc -v say?

Configured with: ../gcc/configure --prefix=/home/eres/check_final/build
--with-cpu=default32 --enable-checking --disable-bootstrap --enable-languages=c
Thread model: posix
gcc version 4.3.0 20071028 (experimental) (GCC)


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #16 from eres at il dot ibm dot com  2007-11-17 06:36 -------
(In reply to comment #15)
> (In reply to comment #14)
> > I still can't reproduce it.  What does your gcc -v say?
> Configured with: ../gcc/configure --prefix=/home/eres/check_final/build
> --with-cpu=default32 --enable-checking --disable-bootstrap --enable-languages=c
> Thread model: posix
> gcc version 4.3.0 20071028 (experimental) (GCC)

This bug is reproducable also on updated mainline - r130173 on
powerpc64-*-linux.
I run the following sequance to get it:

/home/eres/check_final/build/bin/gcc tmp.c -fprofile-generate -O3
./a.out
 /home/eres/check_final/build/bin/gcc tmp.c -fprofile-use
-freorder-blocks-and-partition  -O3


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[eres at il dot ibm dot com]

------- Comment #17 from eres at il dot ibm dot com  2007-11-18 07:32 -------
I reproduced the ICE on x86_64-linux running tmp.c testcase with r130196.
(please make sure you are running tmp.c testcase and not test.c testcase that
was uploaded by mistake).

GCC configured with:
 ../gcc/configure --prefix=/home/eres/test_sms/build --enable-checking
--enable-bootstrap

here is again the sequence I used for running:

/home/eres/test_sms/build/gcc/xgcc -B/home/eres/test_sms/build/gcc/  tmp.c
-fprofile-generate -O3
./a.out
/home/eres/test_sms/build/gcc/xgcc -B/home/eres/test_sms/build/gcc/  tmp.c
-fprofile-use -freorder-blocks-and-partition  -O3


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[patchapp at dberlin dot org]

------- Comment #18 from patchapp at dberlin dot org  2007-11-20 11:45 -------
Subject: Bug number PR rtl-optimization/34085

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2007-11/msg01050.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[revitale at gcc dot gnu dot org]

------- Comment #19 from revitale at gcc dot gnu dot org  2007-11-26 12:15 -------
Subject: Bug 34085

Author: revitale
Date: Mon Nov 26 12:15:02 2007
New Revision: 130435

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130435
Log:
Fix PR rtl-optimization/34085

Added:
    trunk/gcc/testsuite/gcc.dg/tree-prof/bb-reorg.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/bb-reorder.c
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085

[Bug rtl-optimization/34085] ICE with -freorder-blocks-and-partition

[ubizjak at gmail dot com]

------- Comment #20 from ubizjak at gmail dot com  2008-01-15 07:36 -------
The ICE is fixed on mainline.

[The testsuite failure on x86_64 is a separate issue, tracked by PR 34249.]


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ubizjak at gmail dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34085