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author | tejohnson <tejohnson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-04-08 17:39:10 +0000 |
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committer | tejohnson <tejohnson@138bc75d-0d04-0410-961f-82ee72b054a4> | 2013-04-08 17:39:10 +0000 |
commit | f9d4b7f4943df04e4362f7cde1fb6c6de22283ef (patch) | |
tree | ffb943825496db918422c6ebe357dcdcc5207a4b /gcc/cfgcleanup.c | |
parent | 3f4737cd41c1ae5451f9bd34414d33b3214d6dec (diff) | |
download | gcc-f9d4b7f4943df04e4362f7cde1fb6c6de22283ef.tar.gz |
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.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@197595 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/cfgcleanup.c')
-rw-r--r-- | gcc/cfgcleanup.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/gcc/cfgcleanup.c b/gcc/cfgcleanup.c index 471d293f12f..2fcefc60b23 100644 --- a/gcc/cfgcleanup.c +++ b/gcc/cfgcleanup.c @@ -595,9 +595,7 @@ try_forward_edges (int mode, basic_block b) /* We successfully forwarded the edge. Now update profile data: for each edge we traversed in the chain, remove the original edge's execution count. */ - edge_frequency = ((edge_probability * b->frequency - + REG_BR_PROB_BASE / 2) - / REG_BR_PROB_BASE); + edge_frequency = apply_probability (b->frequency, edge_probability); do { |