First phase of unifying the computation of profile scale factors/probabilities and the actual scaling to use rounding divides...
First phase of unifying the computation of profile scale factors/probabilities
and the actual scaling to use rounding divides:
- Add new macro GCOV_COMPUTE_SCALE to basic-block.h to compute the scale
factor/probability via a rounding divide.
- Change all locations that already perform rounding divides (inline or via RDIV)
to use the appropriate helper: GCOV_COMPUTE_SCALE, apply_probability or
combine_probabilities.
- Change ipa-cp.c truncating divides to use rounding divides.
- Add comments to all other locations (currently using truncating divides) to
switch them to one of the helpers so they use a rounding divide.
Next phase will be to replace the locations using truncating divides, marked
with a comment here, into rounding divides via the helper methods.
2013-04-08 Teresa Johnson <tejohnson@google.com>
* basic-block.h (GCOV_COMPUTE_SCALE): Define.
* ipa-inline-analysis.c (param_change_prob): Use helper rounding divide
methods.
(estimate_edge_size_and_time): Add comment to suggest using rounding
methods.
(estimate_node_size_and_time): Ditto.
(remap_edge_change_prob): Use helper rounding divide methods.
* value-prof.c (gimple_divmod_fixed_value_transform): Ditto.
(gimple_mod_pow2_value_transform): Ditto.
(gimple_mod_subtract_transform): Ditto.
(gimple_ic_transform): Ditto.
(gimple_stringops_transform): Ditto.
* stmt.c (conditional_probability): Ditto.
(emit_case_dispatch_table): Ditto.
* lto-cgraph.c (merge_profile_summaries): Ditto.
* tree-optimize.c (execute_fixup_cfg): Ditto.
* cfgcleanup.c (try_forward_edges): Ditto.
* cfgloopmanip.c (scale_loop_profile): Ditto.
(loopify): Ditto.
(duplicate_loop_to_header_edge): Ditto.
(lv_adjust_loop_entry_edge): Ditto.
* tree-vect-loop.c (vect_transform_loop): Ditto.
* profile.c (compute_branch_probabilities): Ditto.
* cfgbuild.c (compute_outgoing_frequencies): Ditto.
* lto-streamer-in.c (input_cfg): Ditto.
* gimple-streamer-in.c (input_bb): Ditto.
* ipa-cp.c (update_profiling_info): Ditto.
(update_specialized_profile): Ditto.
* tree-vect-loop-manip.c (slpeel_tree_peel_loop_to_edge): Ditto.
* cfg.c (update_bb_profile_for_threading): Add comment to suggest using
rounding methods.
* sched-rgn.c (compute_dom_prob_ps): Ditto.
(compute_trg_info): Ditto.
* cfgrtl.c (force_nonfallthru_and_redirect): Ditto.
(purge_dead_edges): Ditto.
* loop-unswitch.c (unswitch_loop): Ditto.
* cgraphclones.c (cgraph_clone_edge): Ditto.
(cgraph_clone_node): Ditto.
* tree-inline.c (copy_bb): Ditto.
(copy_edges_for_bb): Ditto.
(initialize_cfun): Ditto.
(copy_cfg_body): Ditto.
(expand_call_inline): Ditto.
From-SVN: r197595
