optimization/9508: internal compiler error

[ming@mpi-sb.mpg.de]

>Number:         9508
>Category:       optimization
>Synopsis:       internal compiler error
>Confidential:   no
>Severity:       critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jan 30 16:06:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     ming@mpi-sb.mpg.de
>Release:        gcc3.2.1
>Organization:
>Environment:

>Description:
Compile this source
--------------
void BayerNearestNeighbor(unsigned char *outG, int sx, int sy)
{
  int i,j;

  for (i=1;i<sy-2;i+=2)//every two lines
    for (j=0;j<sx-1;j+=2)
      outG[(i*sx+j+1)*3]=outG[((i+1)*sx+j+1)*3];

}
-------------

It will produce such error message:

TestGcc32Bug.c: In function `BayerNearestNeighbor':
TestGcc32Bug.c:10: unrecognizable insn:
(insn 277 147 286 (set (reg:SI 122)
        (ashift:SI (reg/v:SI 59)
            (const_int 1 [0x1]))) -1 (nil)
    (nil))
TestGcc32Bug.c:10: Internal compiler error in extract_insn, at recog.c:2148
>How-To-Repeat:
Use this commandline:

/usr/bin/gcc-3.2 -v  -O6 -DNDEBUG -fomit-frame-pointer -falign-functions=4 -fexpensive-optimizations -fschedule-insns2 -finline-functions -funroll-loops -mfpmath=sse -march=pentium4 -mcpu=pentium4 -DCPU=686 -o TestGcc32Bug.o -c TestGcc32Bug.c
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: