[Bug tree-optimization/96451] [11 Regression] gcc.dg/pr68766.c ICE since r11-2453

[linkw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96451

--- Comment #5 from Kewen Lin <linkw at gcc dot gnu.org> ---
Created attachment 49000
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49000&action=edit
untested patch

Just noticed the dbgcnt supports several intervals, if we want to count
epilogue loop, we probably need to call dbgcnt in vect_do_peeling. One untested
patch attached to show the idea.