Hi, there is no need to compute frequencies here. Bootstrapped/regtested x86-64-linux, comitted.
Honza * tree-ssa-sink.c (select_best_block): Do not use frequencies. Index: tree-ssa-sink.c =================================================================== --- tree-ssa-sink.c (revision 254695) +++ tree-ssa-sink.c (working copy) @@ -226,8 +226,10 @@ select_best_block (basic_block early_bb, /* If BEST_BB is at the same nesting level, then require it to have significantly lower execution frequency to avoid gratutious movement. */ if (bb_loop_depth (best_bb) == bb_loop_depth (early_bb) - && best_bb->count.to_frequency (cfun) - < (early_bb->count.to_frequency (cfun) * threshold / 100.0)) + /* If result of comparsion is unknown, preffer EARLY_BB. + Thus use !(...>=..) rather than (...<...) */ + && !(best_bb->count.apply_scale (100, 1) + > (early_bb->count.apply_scale (threshold, 1)))) return best_bb; /* No better block found, so return EARLY_BB, which happens to be the