[Bug rtl-optimization/88879] [9 Regression] ICE in sel_target_adjust_priority, at sel-sched.c:3332

[arnd at linaro dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88879

Arnd Bergmann <arnd at linaro dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |arnd at linaro dot org

--- Comment #14 from Arnd Bergmann <arnd at linaro dot org> ---
I got the same output while building the linux kernel defconfig today, reduced
to this minimal test case:

$ cat test.c
long a, b;
int fn1() {
  char *c = (void *)b;
  while (1) {
    const long d = *c = d;
    do
      a++;
    while (a == 5);
  }
}
$ ia64-linux-gcc -O3 -c test.c
during RTL pass: mach
lz4_decompress.c:10:1: internal compiler error: in sel_target_adjust_priority,
at sel-sched.c:3334
   10 | }

Reproduced both with 9.2 and current HEAD 
$ ia64-linux-gcc --version
ia64-linux-gcc (GCC) 9.2.1 20200211