diff options
Diffstat (limited to 'gcc/tree-ssa-loop-manip.c')
| -rw-r--r-- | gcc/tree-ssa-loop-manip.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/gcc/tree-ssa-loop-manip.c b/gcc/tree-ssa-loop-manip.c index b2c1ccd..b2f5f16 100644 --- a/gcc/tree-ssa-loop-manip.c +++ b/gcc/tree-ssa-loop-manip.c @@ -1212,7 +1212,7 @@ tree_transform_and_unroll_loop (struct loop *loop, unsigned factor, gimple_stmt_iterator bsi; use_operand_p op; bool ok; - unsigned i, prob, prob_entry, scale_unrolled, scale_rest; + unsigned i, prob, prob_entry, scale_unrolled; profile_count freq_e, freq_h; gcov_type new_est_niter = niter_for_unrolled_loop (loop, factor); unsigned irr = loop_preheader_edge (loop)->flags & EDGE_IRREDUCIBLE_LOOP; @@ -1241,14 +1241,16 @@ tree_transform_and_unroll_loop (struct loop *loop, unsigned factor, of this change (scale the frequencies of blocks before and after the exit by appropriate factors). */ scale_unrolled = prob_entry; - scale_rest = REG_BR_PROB_BASE; new_loop = loop_version (loop, enter_main_cond, NULL, profile_probability::from_reg_br_prob_base (prob_entry), profile_probability::from_reg_br_prob_base (REG_BR_PROB_BASE - prob_entry), - scale_unrolled, scale_rest, true); + profile_probability::from_reg_br_prob_base + (scale_unrolled), + profile_probability::guessed_always (), + true); gcc_assert (new_loop != NULL); update_ssa (TODO_update_ssa); @@ -1369,14 +1371,11 @@ tree_transform_and_unroll_loop (struct loop *loop, unsigned factor, } if (freq_h > 0) { - gcov_type scale; /* Avoid dropping loop body profile counter to 0 because of zero count in loop's preheader. */ if (freq_e == profile_count::zero ()) freq_e = profile_count::from_gcov_type (1); - /* This should not overflow. */ - scale = freq_e.probability_in (freq_h).to_reg_br_prob_base (); - scale_loop_frequencies (loop, scale, REG_BR_PROB_BASE); + scale_loop_frequencies (loop, freq_e.probability_in (freq_h)); } exit_bb = single_pred (loop->latch); |