https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66573
--- Comment #11 from Joshua Green <jvg1981 at aim dot com> --- (In reply to Segher Boessenkool from comment #10) > GCC thinks bar2 will be executed more often that bar1; the code > it generates is perfectly fine for that. > > If you think GCC's heuristics for branch prediction are no good, > could use some improvement, you'll have to come up with more > evidence than just a single artificial testcase. Sorry. These > things were tuned on real code. If gcc's heuristic is indeed optimal when tested over a reasonable sample of real code, then I withdraw my objection.
