[Bug fortran/17073] New: ICE with regmove

[Bug fortran/17073] New: ICE with regmove

[lei at il dot ibm dot com]

This problem seems to be specific to ppc.  I was unable
to reproduce it on ia32.

% cat foo.f90 
SUBROUTINE SYSHTN 

PARAMETER (N=100) ! works if N=10
REAL*8, DIMENSION(N,N) ::  POP, POJ4
REAL*8 Y(N)

POJ4( M, 1:N) =  MATMUL( POP , Y )

END
% ~/gcc-3.5/bin/gfortran -v
Reading specs from
/Users/lei/gcc-3.5/bin/../lib/gcc/powerpc-apple-darwin7.3.0/3.5.0/specs
Configured with: ../gcc/configure --prefix=/Users/lei/gcc-3.5/build/..
--enable-languages=f95
Thread model: posix
gcc version 3.5.0 20040816 (experimental)
% ~/gcc-3.5/bin/gfortran -O2 -fno-regmove -c foo.f90 
% ~/gcc-3.5/bin/gfortran -O2 -c foo.f90
foo.f90: In function `syshtn':
foo.f90:4: error: unrecognizable insn:
(insn:HI 23 22 24 0 (set (reg/f:SI 127)
        (plus:SI (reg/f:SI 128)
            (const_int 4294967288 [0xfffffff8]))) -1 (insn_list 22 (nil))
    (expr_list:REG_DEAD (reg/f:SI 128)
        (expr_list:REG_EQUAL (const:SI (plus:SI (symbol_ref:SI ("poj4.398")
[flags 0x182] <var_decl 0x412e5d90 poj4>)
                    (const_int 4294967288 [0xfffffff8])))
            (nil))))
foo.f90:4: internal compiler error: in extract_insn, at recog.c:2037
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
%

-- 
           Summary: ICE with regmove
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: lei at il dot ibm dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: powerpc-apple-darwin7.3.0
  GCC host triplet: powerpc-apple-darwin7.3.0
GCC target triplet: powerpc-apple-darwin7.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073

[Bug target/17073] ICE with regmove

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-18 14:32 -------
Confirmed, will try to come up with a C example to prove that this is a regression.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
OtherBugsDependingO|                            |15502
              nThis|                            |
          Component|fortran                     |target
           Keywords|                            |ice-on-valid-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073

[Bug target/17073] ICE with regmove

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-19 04:34 -------
I cannot produce this as of today, does this still happen for you?

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073

[Bug target/17073] ICE with regmove

[lei at il dot ibm dot com]

------- Additional Comments From lei at il dot ibm dot com  2004-08-19 07:38 -------
(In reply to comment #2)
> I cannot produce this as of today, does this still happen for you?

Yup, as of cvs state at 2004-08-19 7:00 GMT.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073

[Bug target/17073] ICE with regmove

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-19 14:23 -------
Lets move this to new for now.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-08-19 14:23:42
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073

[Bug target/17073] ICE with regmove

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-09-19 20:05 -------
I cannot reproduce this as of today for sure, does is this fixed for you too (maybe something is being 
miscompiled as I only built with -O0).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073

[Bug target/17073] ICE with regmove

[lei at il dot ibm dot com]

------- Additional Comments From lei at il dot ibm dot com  2004-09-20 08:21 -------
Can't reproduce it with the 20040919 build.  

And galgel also compiles with -O2 and runs to the end,
so it's time to celebrate.  If you close the PR, maybe you can
add this testcase to the suite to prevent future regressions.

     Victor

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073

[Bug target/17073] ICE with regmove

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-09-20 13:02 -------
Fixed will apply the testcase later today.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17073