[Bug tree-optimization/107975] New: [13 Regression] frange ICE since r13-4492

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107975

            Bug ID: 107975
           Summary: [13 Regression] frange ICE since r13-4492
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
  Target Milestone: ---

My r13-4492-g4500baaccb6e4d696e223c338bbdf7705c3646dd change caused ICE on:
double
foo (double x, double y)
{
  if (x == 42.0)
    return 1.0;
  double r = x * y;
  if (!__builtin_isnan (r))
    __builtin_unreachable ();
  return r;
}