[Bug target/28181] New: [4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[Bug target/28181] New: [4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[tbm at cyrius dot com]

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[ Forwarded from http://bugs.debian.org/375522 ]

I get the following ICE with gcc 4.1 and 4.2 on m68k:

928:tbm@reyes: ~] m68k-linux-gnu-gcc -c -O2 mini.c
mini.c: In function ‘scan’:
mini.c:48: warning: incompatible implicit declaration of built-in function
‘strlen’
mini.c:90: warning: assignment makes integer from pointer without a cast
mini.c:94: warning: incompatible implicit declaration of built-in function
‘strlen’
mini.c:115: warning: initialization from incompatible pointer type
mini.c:122: error: insn does not satisfy its constraints:
(insn 323 57 324 9 (set (reg:QI 8 %a0)
        (mem/s:QI (plus:SI (reg/f:SI 14 %a6)
                (const_int -128 [0xffffff80])) [0 name+0 S1 A16])) 41
{*m68k.md:748} (nil)
    (nil))
mini.c:122: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:393
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
zsh: exit 1     m68k-linux-gnu-gcc -c -O2 mini.c
929:tbm@reyes: ~] m68k-linux-gnu-gcc -c -O1 mini.c
mini.c: In function ‘scan’:
mini.c:48: warning: incompatible implicit declaration of built-in function
‘strlen’
mini.c:90: warning: assignment makes integer from pointer without a cast
mini.c:94: warning: incompatible implicit declaration of built-in function
‘strlen’
mini.c:115: warning: initialization from incompatible pointer type
930:tbm@reyes: ~]

FWIW, this test case fails with 4.2 but works with 4.1.  The original bug was
reported against 4.1 though.  I can build a 4.1 and run delta again if this
would be helpful.  The original ICE with 4.1 is:

crest% gcc -c -O2 scansbr.i
scansbr.c: In function 'scan':
scansbr.c:369: error: insn does not satisfy its constraints:
(insn 1657 689 1658 81 (set (reg:QI 8 %a0)
        (mem/s:QI (plus:SI (reg/f:SI 14 %a6)
                (const_int -212 [0xffffff2c])) [0 name+0 S1 A16])) 33
{*m68k.md:748} (nil)
    (nil))
scansbr.c:369: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:393
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>.


-- 
           Summary: [4.1/4.2 regression] ICE in
                    reload_cse_simplify_operands, at postreload.c:393 on
                    m68k
           Product: gcc
           Version: 4.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tbm at cyrius dot com
 GCC build triplet: m68k-linux-gnu
GCC target triplet: m68k-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[tbm at cyrius dot com]

------- Comment #1 from tbm at cyrius dot com  2006-06-27 20:15 -------
Update: 4.0 shows the same problem.  3.4.6 works

crest% gcc-4.0 -c -O2 scansbr.i
scansbr.c: In function 'scan':
scansbr.c:154: warning: pointer targets in passing argument 2 of 'm_getfld'
differ in signedness
scansbr.c:154: warning: pointer targets in passing argument 3 of 'm_getfld'
differ in signedness
scansbr.c:189: warning: pointer targets in passing argument 2 of 'm_getfld'
differ in signedness
scansbr.c:189: warning: pointer targets in passing argument 3 of 'm_getfld'
differ in signedness
scansbr.c:225: warning: pointer targets in passing argument 2 of 'm_getfld'
differ in signedness
scansbr.c:225: warning: pointer targets in passing argument 3 of 'm_getfld'
differ in signedness
scansbr.c:262: warning: pointer targets in passing argument 2 of 'm_getfld'
differ in signedness
scansbr.c:262: warning: pointer targets in passing argument 3 of 'm_getfld'
differ in signedness
scansbr.c:369: error: insn does not satisfy its constraints:
(insn 1692 701 1693 82 (set (reg:QI 8 %a0)
        (mem/s:QI (plus:SI (reg/f:SI 14 %a6)
                (const_int -212 [0xffffff2c])) [0 name+0 S1 A16])) 33
{*m68k.md:746} (nil)
    (nil))
scansbr.c:369: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:391
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-4.0/README.Bugs>.


-- 

tbm at cyrius dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.0.4 4.1.1 4.2.0
      Known to work|                            |3.4.6
            Summary|[4.1/4.2 regression] ICE in |[4.0/4.1/4.2 regression] ICE
                   |reload_cse_simplify_operands|in
                   |, at postreload.c:393 on    |reload_cse_simplify_operands
                   |m68k                        |, at postreload.c:393 on
                   |                            |m68k


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[tbm at cyrius dot com]

------- Comment #3 from tbm at cyrius dot com  2006-06-27 20:19 -------
Created an attachment (id=11763)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11763&action=view)
preprocessed source

Original preprocessed source, shows the problem with 4.0, 4.1 and 4.2.  Works
with 3.4.6.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[tbm at cyrius dot com]

------- Comment #2 from tbm at cyrius dot com  2006-06-27 20:17 -------
Created an attachment (id=11762)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11762&action=view)
test case for 4.2

reduced testcase, shows the problem with 4.2 only


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[tbm at cyrius dot com]

------- Comment #3 from tbm at cyrius dot com  2006-06-27 20:19 -------
Created an attachment (id=11763)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11763&action=view)
preprocessed source

Original preprocessed source, shows the problem with 4.0, 4.1 and 4.2.  Works
with 3.4.6.


------- Comment #4 from tbm at cyrius dot com  2006-06-27 20:19 -------
Created an attachment (id=11764)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11764&action=view)
preprocessed source

Original preprocessed source, shows the problem with 4.0, 4.1 and 4.2.  Works
with 3.4.6.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[tbm at cyrius dot com]

------- Comment #5 from tbm at cyrius dot com  2006-06-27 21:24 -------
Created an attachment (id=11765)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11765&action=view)
test case

This one fails with gcc 4.1 and 4.2.


-- 

tbm at cyrius dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #11762|0                           |1
        is obsolete|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[schwab at suse dot de]

------- Comment #6 from schwab at suse dot de  2006-07-01 07:01 -------
The bug is much older, I was able to get it fail using the sources at the 3.4
branch point.  That 3.4.6 does not fail is probably just coincidence.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[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|---                         |4.0.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[mmitchel at gcc dot gnu dot org]

------- Comment #7 from mmitchel at gcc dot gnu dot org  2006-07-17 02:53 -------
m68k is not a primary or secondary platform.


-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[tbm at cyrius dot com]

------- Comment #8 from tbm at cyrius dot com  2006-10-15 08:43 -------
Created an attachment (id=12436)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12436&action=view)
testcase

another testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2/4.3 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[rask at sygehus dot dk]

------- Comment #9 from rask at sygehus dot dk  2006-12-11 20:24 -------
Created an attachment (id=12785)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12785&action=view)
Partial patch

Please try this patch. It removes the ICE, but the code may not run on 68000
and 68010 CPUs because there is also an alignment problem. Please see
<URL:http://gcc.gnu.org/ml/gcc-patches/2006-12/msg00766.html> for details.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2/4.3 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[gdr at gcc dot gnu dot org]

------- Comment #10 from gdr at gcc dot gnu dot org  2007-02-03 17:43 -------
Won't fix in GCC-4.0.x.  Adjusting milestone.


-- 

gdr at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.0.4                       |4.1.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2/4.3 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.1.3                       |4.1.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2/4.3 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[mmitchel at gcc dot gnu dot org]

-- 

mmitchel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.1.2                       |4.1.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.0/4.1/4.2/4.3 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[rsandifo at gcc dot gnu dot org]

------- Comment #11 from rsandifo at gcc dot gnu dot org  2007-03-06 09:01 -------
Subject: Bug 28181

Author: rsandifo
Date: Tue Mar  6 09:01:07 2007
New Revision: 122609

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=122609
Log:
gcc/
        PR target/28181
        * config/m68k/m68k-protos.h (m68k_secondary_reload_class): Declare.
        (m68k_preferred_reload_class): Likewise.
        * config/m68k/m68k.h (HARD_REGNO_MODE_OK): Remove duplicated comment.
        (SECONDARY_RELOAD_CLASS): Define.
        (PREFERRED_RELOAD_CLASS): Use m68k_preferred_reload_class.
        (LIMIT_RELOAD_CLASS): Delete.
        * config/m68k/m68k.c (m68k_regno_mode_ok): Don't prevent address
        registers from storing bytes.
        (m68k_secondary_reload_class): New function.
        (m68k_preferred_reload_class): Likewise.

gcc/testsuite/
        * gcc.c-torture/compile/m68k-byte-addr.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/m68k-byte-addr.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/m68k/m68k-protos.h
    trunk/gcc/config/m68k/m68k.c
    trunk/gcc/config/m68k/m68k.h
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.1/4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[rsandifo at gcc dot gnu dot org]

------- Comment #12 from rsandifo at gcc dot gnu dot org  2007-03-06 09:02 -------
Now fixed in trunk.  The patch may be too invasive to backport;
I'm not sure.


-- 

rsandifo at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rsandifo at gcc dot gnu dot
                   |                            |org
      Known to work|3.4.6                       |3.4.6 4.3.0
            Summary|[4.0/4.1/4.2/4.3 regression]|[4.1/4.2 regression] ICE in
                   |ICE in                      |reload_cse_simplify_operands
                   |reload_cse_simplify_operands|, at postreload.c:393 on
                   |, at postreload.c:393 on    |m68k
                   |m68k                        |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[jsm28 at gcc dot gnu dot org]

------- Comment #13 from jsm28 at gcc dot gnu dot org  2008-07-04 21:25 -------
Closing 4.1 branch.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.1/4.2 regression] ICE in |[4.2 regression] ICE in
                   |reload_cse_simplify_operands|reload_cse_simplify_operands
                   |, at postreload.c:393 on    |, at postreload.c:393 on
                   |m68k                        |m68k
   Target Milestone|4.1.3                       |4.2.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181

[Bug target/28181] [4.2 regression] ICE in reload_cse_simplify_operands, at postreload.c:393 on m68k

[jsm28 at gcc dot gnu dot org]

------- Comment #14 from jsm28 at gcc dot gnu dot org  2009-03-30 16:58 -------
Closing 4.2 branch, fixed in 4.3.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
      Known to fail|4.0.4 4.1.1 4.2.0           |4.0.4 4.1.1 4.2.0 4.2.5
         Resolution|                            |FIXED
   Target Milestone|4.2.5                       |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28181