[Bug target/30064] New: ICE in reload_cse_simplify_operands, at postreload.c:393

[Bug target/30064] New: ICE in reload_cse_simplify_operands, at postreload.c:393

[ssoe at kirktelecom dot com]

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$ m68k-linux-gcc -v -m5307 -msep-data -O1 -c gcc-m68k-ice.c
Using built-in specs.
Target: m68k-linux
Configured with: ../gcc-4.3-20061202/configure --prefix=/home/ssoe/tmp/m68k
--target m68k-linux --disable-shared --disable-threads --enable-languages=c
--with-headers=/home/ssoe/tmp/m68k/m68k-linux/include
Thread model: single
gcc version 4.3.0 20061202 (experimental)
 /home/ssoe/tmp/m68k/libexec/gcc/m68k-linux/4.3.0/cc1 -quiet -v
-D__HAVE_68881__ gcc-m68k-ice.c -quiet -dumpbase gcc-m68k-ice.c -m5307
-msep-data -auxbase gcc-m68k-ice -O1 -version -o /tmp/cchI2eF1.s
#include "..." search starts here:
#include <...> search starts here:
 /home/ssoe/tmp/m68k/lib/gcc/m68k-linux/4.3.0/include

/home/ssoe/tmp/m68k/lib/gcc/m68k-linux/4.3.0/../../../../m68k-linux/sys-include
 /home/ssoe/tmp/m68k/lib/gcc/m68k-linux/4.3.0/../../../../m68k-linux/include
End of search list.
GNU C version 4.3.0 20061202 (experimental) (m68k-linux)
        compiled by GNU C version 4.1.1 20061011 (Red Hat 4.1.1-30).
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: c0f3be0098cca37cfe39087e559a1e7c
gcc-m68k-ice.c: In function ‘f’:
gcc-m68k-ice.c:28: error: insn does not satisfy its constraints:
(insn 81 205 207 9 (parallel [
            (set (reg:SI 2 %d2)
                (div:SI (reg:SI 2 %d2)
                    (mem/c:SI (plus:SI (reg/f:SI 14 %a6)
                            (reg:SI 9 %a1)) [0 column_width+0 S4 A8])))
            (set (reg:SI 0 %d0 [80])
                (mod:SI (reg:SI 2 %d2)
                    (mem/c:SI (plus:SI (reg/f:SI 14 %a6)
                            (reg:SI 9 %a1)) [0 column_width+0 S4 A8])))
        ]) 228 {*m68k.md:3000} (nil)
    (nil))
gcc-m68k-ice.c:28: internal compiler error: in reload_cse_simplify_operands, at
postreload.c:393

If any of the options -m5307, -msep-data, or -O1 is removed, the problem goes
away.

Reproduced on 4.1.1, 4.1-20061124, 4.2-20061128, 4.3-20061202. Couldn't
reproduce ICE on 3.4.6, but it could be generating incorrect code (no solid
evidence of that though).


-- 
           Summary: ICE in reload_cse_simplify_operands, at postreload.c:393
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ssoe at kirktelecom dot com
 GCC build triplet: i686-redhat-linux-gnu
  GCC host triplet: i686-redhat-linux-gnu
GCC target triplet: m68k-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30064

[Bug target/30064] ICE in reload_cse_simplify_operands, at postreload.c:393

[ssoe at kirktelecom dot com]

------- Comment #1 from ssoe at kirktelecom dot com  2006-12-04 16:42 -------
Created an attachment (id=12741)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12741&action=view)
Testcase

Reduced version of shell/cmdedit.c from busybox-1.2.2. 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30064

[Bug target/30064] ICE in reload_cse_simplify_operands, at postreload.c:393

[mikpe at it dot uu dot se]

------- Comment #2 from mikpe at it dot uu dot se  2009-06-16 15:17 -------
(In reply to comment #0)
> gcc-m68k-ice.c:28: internal compiler error: in reload_cse_simplify_operands, at
> postreload.c:393
> 
> If any of the options -m5307, -msep-data, or -O1 is removed, the problem goes
> away.
> 
> Reproduced on 4.1.1, 4.1-20061124, 4.2-20061128, 4.3-20061202. Couldn't
> reproduce ICE on 3.4.6, but it could be generating incorrect code (no solid
> evidence of that though).

Using my m68k-unknown-linux cross environment I can reproduce the ICE with
gcc-4.2.[0-4], but not with gcc-4.3.[0-3] or with the latest weekly gcc-4.3 and
gcc-4.4 snapshots. Since 4.3.0 and above work I didn't bother trying to
identify the exact revision that fixed it.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30064

[Bug target/30064] ICE in reload_cse_simplify_operands, at postreload.c:393

[schwab at linux-m68k dot org]

------- Comment #3 from schwab at linux-m68k dot org  2009-08-23 18:45 -------
No longer reproducible with 4.3.0, assuming fixed.


-- 

schwab at linux-m68k dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30064