[Bug tree-optimization/107269] wrong code at -O1 and above with "-fno-tree-ccp" on x86_64-linux-gnu

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107269

--- Comment #1 from Zhendong Su <zhendong.su at inf dot ethz.ch> ---
A related instance:

[537] % gcctk -v
Using built-in specs.
COLLECT_GCC=gcctk
COLLECT_LTO_WRAPPER=/local/suz-local/software/local/gcc-trunk/libexec/gcc/x86_64-pc-linux-gnu/13.0.0/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 --enable-multilib
--with-system-zlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 13.0.0 20221014 (experimental) [master r13-3307-g8efc38347a7] (GCC) 
[538] % 
[538] % gcctk -O1 small.c; ./a.out
[539] % 
[539] % gcctk -O1 -fno-tree-ccp small.c
[540] % timeout -s 9 5 ./a.out
Killed
[541] % 
[541] % cat small.c
int a, c, d;
unsigned b;
int main() {
  int f = 1;
 L1:
  c = f;
 L2:
  b & f;
  short i = -f;
  if (!a) {
    d = f;
    f = ~(b % f);
    if (d > -1)
      goto L2;
  }
  f = i;
  if (a)
    goto L1;
  int *j = &f;
  return 0;
}