[Bug tree-optimization/87746] [9 Regression] ICE in vect_update_misalignment_for_peel, at tree-vect-data-refs.c:1035

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87746

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Nicer testcase:

typedef struct rtx_def *rtx;
struct replacement {
    rtx *where;
    rtx *subreg_loc;
    int mode;
};
static struct replacement replacements[150];
void move_replacements (rtx *x, int y, int n_replacements)
{
  int i;
  for (i = 0; i < n_replacements; i++)
    if (replacements[i].subreg_loc == x)
      replacements[i].subreg_loc = y;
    else if (replacements[i].where == x)
      {
        replacements[i].where = y;
        replacements[i].subreg_loc = 0;
      }
}