https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127031

--- Comment #5 from ptomsich at gcc dot gnu.org ---
This doesn't trigger a crash on x86-64, but instrumentation shows that the
write-beyond-array (off-by-one) is real there, too.

I instrumented every best_alg->log[best_alg->ops] write site to report the
index actually used:
  SYNTH_IDX max=8 MAX_BITS_PER_WORD=8  <<< OUT-OF-BOUNDS WRITE

I guess, we'll have to review based on the patch.

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