[Bug rtl-optimization/110391] [12/13/14 Regression] wrong code at -O2 and -O3 with "-fsel-sched-pipelining -fselective-scheduling2" on x86_64-linux-gnu

[zhendong.su at inf dot ethz.ch via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110391

--- Comment #2 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
A likely related reproducer that affects 10.* and later. 

Compiler Explorer: https://godbolt.org/z/KP6PnTKPj

[579] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/home/suz/suz-local/software/local/gcc-trunk/bin/../libexec/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with: ../gcc-trunk/configure --disable-bootstrap
--enable-checking=yes --prefix=/local/suz-local/software/local/gcc-trunk
--enable-sanitizers --enable-languages=c,c++ --disable-werror
--disable-multilib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 14.0.0 20230625 (experimental) [master r14-924-gd709841ae0f] (GCC) 
[580] % 
[580] % gcctk -O2 -fsel-sched-pipelining -fschedule-insns
-fselective-scheduling2 small.c
[581] % ./a.out
Floating point exception
[582] % 
[582] % gcctk -O2 small.c; ./a.out
[583] % 
[583] % cat small.c
int printf(const char *, ...);
int a, d, e = -2;
char b;
long c = -2;
int main() {
  int g, h;
  d = e;
  g = c;
 L:
  h = d;
  c = 1;
  d = c % ~e;
  e = e >> ~g;
  if (e > b)
    printf("%ld", c);
  if (g > c)
    printf("%d", a);
  if (b)
    goto L;
  e = h;
  return 0;
}