[Bug tree-optimization/113144] [14 regression] ICE when building dpkg-1.21.15 in verify_dominators (error: dominator of 9 should be 48, not 12)

[zsojka at seznam dot cz via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113144

--- Comment #10 from Zdenek Sojka <zsojka at seznam dot cz> ---
Created attachment 57009
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=57009&action=edit
simpler testcase using _BitInt()

$ x86_64-pc-linux-gnu-gcc -O3 -mavx2 testcase.c 
testcase.c: In function 'foo':
testcase.c:5:1: error: dominator of 24 should be 57, not 12
    5 | foo (void)
      | ^~~
testcase.c:5:1: error: dominator of 25 should be 57, not 12
during GIMPLE pass: vect
testcase.c:5:1: internal compiler error: in verify_dominators, at
dominance.cc:1194
0x742528 verify_dominators(cdi_direction)
...