egcs-2.92.21 19981109 : ICE 'Could not split insn' on i686-pc-linux-gnu

[Laurent Bonnaud]

Hi,

the following program does not compile with the latest snapshot :

$ g++ -march=pentiumpro -O2 -c bm.cc
bm.cc: In function `void Tab_copie_prolonge<unsigned char>(class Tab<unsigned char> &, const class Tab<unsigned char> &)':
bm.cc:55:   instantiated from here
bm.cc:49: Could not split insn
(insn 169 204 84 (set (reg/v:SI 3 %ebx)
        (if_then_else:SI (le:SI (reg:SI 1 %edx)
                (mem/s:SI (plus:SI (reg:SI 0 %eax)
                        (const_int 24)) 0))
            (reg/v:SI 4 %esi)
            (mem/s:SI (plus:SI (mem:SI (plus:SI (reg:SI 6 %ebp)
                            (const_int 12)) 0)
                    (const_int 24)) 0))) 357 {movsicc+2} (insn_list 204 (insn_list 201 (nil)))
    (expr_list:REG_DEAD (reg:SI 1 %edx)
        (expr_list:REG_DEAD (reg:SI 0 %eax)
            (nil))))
/home/lima/d02/temics/bonnaud/poubelle2/egcs-19981109/gcc/toplev.c:1390: Internal compiler error in function fatal_insn

$ g++ -v
Reading specs from /udd/bonnaud/poubelle2/linux-egcs2/lib/gcc-lib/i686-pc-linux-gnu/egcs-2.92.21/specs
gcc version egcs-2.92.21 19981109 (gcc2 ss-980609 experimental)

-- 
Laurent.

// compile with g++ -march=pentiumpro -O2 -c bm.cc
template <class Type>
class Tab
{
public:
  int debut_i;
  int debut_j;
  int fin_i;
  int fin_j;
  int debut_im_i;
  int debut_im_j;
  int fin_im_i;
  int fin_im_j;

  Type** vp;

  Type& operator()(int i, int j)
  {

    return vp[i][j];
  }

  const Type& operator()(int i, int j) const
  {
    return vp[i][j];
  }

  const Type& prolonge_ext(int i, int j) const
  {
    if(i<debut_im_i)
      i=debut_im_i;
    else if(i>fin_im_i)
      i=fin_im_i;

    if(j<debut_im_j)
      j=debut_im_j;
    else if(j>fin_im_j)
      j=fin_im_j;
    return vp[i][j];
  }

};

template<class Type>
void Tab_copie_prolonge(Tab<unsigned char>& tab_dest, const Tab<Type>& tab_source)
{
  for(int i=tab_dest.debut_i;i<=tab_dest.fin_i;i++)
    for(int j=tab_dest.debut_j;j<=tab_dest.fin_j;j++)
      tab_dest(i,j)=tab_source.prolonge_ext(i,j);
}

void crash()
{
  Tab<unsigned char> image1, image1p;
  Tab_copie_prolonge(image1p,image1);

}