[Bug rtl-optimization/93658] [9/10 Regression] infinite loop building ghostscript and icu with -O3 on powerpc64le-linux-gnu

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93658

--- Comment #7 from Peter Bergner <bergner at gcc dot gnu.org> ---
Here's the minimal test case using options -O3 -mcpu=power8
-fstack-protector-strong:

void bar();
char b;
void
foo (void)
{
  char a;
  int d = b;
  char *e = &a;
  while (d)
    *e++ = --d;
  bar ();
}