https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102622
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to Aldy Hernandez from comment #4) > Can you try with -fno-thread-jumps to make sure its really the threader at > play? -fno-thread-jumps fixes the bug. > If so, you could try to narrow it down to the problematic threading path > with: > > -fdbg-cnt=registered_jump_thread:N:N > > where N is the number that causes the problem. What N should I try? I got [hjl@gnu-skx-1 gcc]$ ./xgcc -B./ -S -O3 -march=native /export/project/git/gcc-bisect/pr102622.cc -fdbg-cnt=registered_jump_thread:10:10 cc1plus: error: Interval overlap of ??-fdbg-cnt=registered_jump_thread??: [1, 10] and [1, 10]