[Bug rtl-optimization/31987] New: [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[Bug rtl-optimization/31987] New: [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[tbm at cyrius dot com]

I get the following ICE with gcc 4.3 at -O3:

(sid)24533:tbm@em64t: ~] /usr/lib/gcc-snapshot/bin/g++ -c -O3 ickle-Icons.cc
ickle-Icons.cc: In member function 'bool Icons::setIcons(const std::string&)':
ickle-Icons.cc:152: internal compiler error: in remove_insn, at emit-rtl.c:3579
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


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           Summary: [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579
                    at -O3
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: rtl-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987

[Bug rtl-optimization/31987] [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[tbm at cyrius dot com]

------- Comment #1 from tbm at cyrius dot com  2007-05-18 14:55 -------
Created an attachment (id=13577)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13577&action=view)
testcase


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987

[Bug rtl-optimization/31987] [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[ubizjak at gmail dot com]

------- Comment #2 from ubizjak at gmail dot com  2007-05-18 15:28 -------
Confirmed, backtrace:

#1  0x082aa0d0 in remove_insn (insn=0xb7b25620) at
../../gcc-svn/trunk/gcc/emit-rtl.c:3579
#2  0x08262d08 in delete_insn (insn=0xb7b25620) at
../../gcc-svn/trunk/gcc/cfgrtl.c:134
#3  0x08262ef8 in delete_insn_chain (start=0xb7b25620, finish=0xb7b17140) at
../../gcc-svn/trunk/gcc/cfgrtl.c:214
#4  0x08263161 in rtl_delete_block (b=0xb7b1d2d0) at
../../gcc-svn/trunk/gcc/cfgrtl.c:373
#5  0x08263299 in cfg_layout_delete_block (bb=0xb7b1d2d0) at
../../gcc-svn/trunk/gcc/cfgrtl.c:2467
#6  0x08254fdd in delete_basic_block (bb=0xb7b1d2d0) at
../../gcc-svn/trunk/gcc/cfghooks.c:464
#7  0x08253de1 in cleanup_cfg (mode=64) at
../../gcc-svn/trunk/gcc/cfgcleanup.c:2002
#8  0x0872f2a8 in fwprop_done () at ../../gcc-svn/trunk/gcc/fwprop.c:917
#9  0x0872f357 in fwprop_addr () at ../../gcc-svn/trunk/gcc/fwprop.c:999
#10 0x083ba9e3 in execute_one_pass (pass=0x88fa680) at
../../gcc-svn/trunk/gcc/passes.c:1065


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ubizjak at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-05-18 15:28:55
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987

[Bug rtl-optimization/31987] [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[tbm at cyrius dot com]

------- Comment #3 from tbm at cyrius dot com  2007-05-18 21:31 -------
Note that this works with 20070422 (and fails with 20070515).


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987

[Bug rtl-optimization/31987] [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2007-05-22 23:13 -------
We are deleting the whole basic block.
Steven, I think this is related to one of your cfg basic block changes, can you
take a look?


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |steven at gcc dot gnu dot
                   |                            |org
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987

[Bug rtl-optimization/31987] [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2007-06-12 19:13 -------
Looks like the dataflow merge now exposes this to SPEC2000 FDO runs on x86_64
for wupwise and gcc.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987

[Bug rtl-optimization/31987] [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[stevenb dot gcc at gmail dot com]

------- Comment #6 from stevenb dot gcc at gmail dot com  2007-06-13 05:22 -------
Subject: Re:  [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

I'll take a look this weekend.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987

[Bug rtl-optimization/31987] [4.3 Regression] ICE in remove_insn, at emit-rtl.c:3579 at -O3

[pinskia at gcc dot gnu dot org]

------- Comment #7 from pinskia at gcc dot gnu dot org  2007-06-14 02:16 -------
This was fixed by:
2007-06-12  Seongbae Park  <seongbae.park@gmail.com>
       * gcse.c (cpro_jump): Don't emit barrier in cfglayout mode.

As the barrier was being created by gcse (before the merge of df branch). 


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pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31987