egcs-1.1 unrecognizable insn on HPPA with -fPIC

[Bruno Haible]

Hi,

Compiling the program given below gives an internal compiler error.

$ gcc -v
Reading specs from /nfs/ishare/lib/egcs/1.1b/hppa1.1-hp-hpux10.20/lib/gcc-lib/hppa1.1-hp-hpux10.20/egcs-2.91.57/specs
gcc version egcs-2.91.57 19980901 (egcs-1.1 release)

$ gcc -O -fPIC -S bug.c
bug.c: In function `alloc_trampoline':
bug.c:15: internal error--unrecognizable insn:
(insn 32 30 34 (set (reg:SI 99)
        (plus:SI (reg:SI 19 %r19)
            (high:SI (symbol_ref/v:SI ("@tramp"))))) -1 (nil)
    (expr_list:REG_DEAD (reg:SI 19 %r19)
        (nil)))
toplev.c:1360: Internal compiler error in function fatal_insn

$ gcc -O -fPIC -S bug.c -v
Reading specs from /nfs/ishare/lib/egcs/1.1b/hppa1.1-hp-hpux10.20/lib/gcc-lib/hppa1.1-hp-hpux10.20/egcs-2.91.57/specs
gcc version egcs-2.91.57 19980901 (egcs-1.1 release)
 /nfs/ishare/lib/egcs/1.1b/hppa1.1-hp-hpux10.20/lib/gcc-lib/hppa1.1-hp-hpux10.20/egcs-2.91.57/cpp -lang-c -v -undef -D__GNUC__=2 -D__GNUC_MINOR__=91 -Dhppa -Dhp9000s800 -D__hp9000s800 -Dhp9k8 -DPWB -Dhpux -Dunix -D__hppa__ -D__hp9000s800__ -D__hp9000s800 -D__hp9k8__ -D__PWB__ -D__hpux__ -D__unix__ -D__hppa -D__hp9000s800 -D__hp9k8 -D__PWB -D__hpux -D__unix -Asystem(unix) -Asystem(hpux) -Acpu(hppa) -Amachine(hppa) -D__OPTIMIZE__ -D__hp9000s700 -D_PA_RISC1_1 -D_HPUX_SOURCE -D_HIUX_SOURCE bug.c /var/tmp/cc8wmC5g.i
GNU CPP version egcs-2.91.57 19980901 (egcs-1.1 release) (hppa)
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /nfs/ishare/lib/egcs/1.1b/hppa1.1-hp-hpux10.20/hppa1.1-hp-hpux10.20/include
 /nfs/ishare/lib/egcs/1.1b/hppa1.1-hp-hpux10.20/lib/gcc-lib/hppa1.1-hp-hpux10.20/egcs-2.91.57/include
 /usr/include
End of search list.
 /nfs/ishare/lib/egcs/1.1b/hppa1.1-hp-hpux10.20/lib/gcc-lib/hppa1.1-hp-hpux10.20/egcs-2.91.57/cc1 /var/tmp/cc8wmC5g.i -quiet -dumpbase bug.c -O -version -fPIC -o bug.s
GNU C version egcs-2.91.57 19980901 (egcs-1.1 release) (hppa1.1-hp-hpux10.20) compiled by GNU C version egcs-2.91.57 19980901 (egcs-1.1 release).
bug.c: In function `alloc_trampoline':
bug.c:15: internal error--unrecognizable insn:
(insn 32 30 34 (set (reg:SI 99)
        (plus:SI (reg:SI 19 %r19)
            (high:SI (symbol_ref/v:SI ("@tramp"))))) -1 (nil)
    (expr_list:REG_DEAD (reg:SI 19 %r19)
        (nil)))
toplev.c:1360: Internal compiler error in function fatal_insn

============================= bug.c =====================================
typedef int (*TR_function) ();
extern void tramp ();  
extern void*  malloc (unsigned int  size);
TR_function alloc_trampoline (address, variable, data)
  TR_function address;
  void* variable;
  void* data;
{
  char* function;
  char* room = malloc(sizeof(void*) + 20  + 16 -1);
  function = (char*)(((long)room + sizeof(void*) + 16 -1) & - 16 );
  ((char**)function)[-1] = room;  
  *(long *) (function + 0) = ((long *) ((char*)&tramp-2))[0];
  return (TR_function) (function + 2 );
}
=========================================================================

Regards,
                  Bruno

----------------------------------------------------------------------------
Bruno Haible                            email: <haible@ilog.fr>
ILOG S.A.                               tel: +33 1 4908 3585
9, rue de Verdun - BP 85                fax: +33 1 4908 3510
94253 Gentilly Cedex                    url: http://www.ilog.fr/
France                                  running Sparc-Linux-BSD-GNU-X11-KDE