https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84201
--- Comment #7 from Steve Ellcey <sje at gcc dot gnu.org> --- (In reply to Richard Biener from comment #6) > If Martins bisection to power.fppized.o is correct you can bisect the loop > via the vect_loop or vect_slp debug counters (or first try with just > -fno-tree-{loop,slp}-vectorize to narrow down to loop vs. BB vectorization). I will let one of the x86 experts try that. I was just surprised to find that one of the most popular benchmarks fails on one of the most popular targets and that it has been that way for about a year.