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| author | Jan Hubicka <jh@suse.cz> | 2001-07-28 23:37:35 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2001-07-28 21:37:35 +0000 |
| commit | 134d3a2eaa33145cc91a8f9a8b9ad01c399923bb (patch) | |
| tree | 9dcbd6f10eb7084accad68aa621c0f3eb6a081d1 /gcc/basic-block.h | |
| parent | ffd1553440265622ceef4a5fa31d7fa706adb7ca (diff) | |
| download | gcc-134d3a2eaa33145cc91a8f9a8b9ad01c399923bb.tar.gz | |
basic-block.h (EDGE_FREQUENCY): New macro.
* basic-block.h (EDGE_FREQUENCY): New macro.
* bb-reorder (fixup_reorder_chain): Set counts and frequencies
for new BB/edges.
* flow.c (find_sub_basic_blocks): Likewise.
(try_crossjump_to_edge): Likewise; use EDGE_FREQUENCY
(redirect_edge_and_branch): Use EDGE_FREQUENCY.
* predict.c (DEF_PREDICTOR): New argument FLAGS.
(HITRATE): New macro.
(PRED_FLAG_FIRST_MATCH): New constant.
(predictor_info): New field flgags.
(combine_predictions_for_insn): Use DS theory to combine
probabilities; set the edge probabilities when finished.
(estimate_probability): Avoid duplicated matches
of LOOP_BRANCH heuristics for nested loops; update comment.
* predict.def: Add flags for each prediction, set probabilities
according to B&L paper.
* predict.h (DEF_PREDICTOR): New argument FLAGS.
* profile.c (compute_branch_probabilities): Cleanup way the edge
probabilities are computed and REG_BR_PROB notes are dropped; if
values does not match, emit error.
(init_branch_prob): Do error instead of warning when profile driven
feedback is missing or corrupt.
From-SVN: r44439
Diffstat (limited to 'gcc/basic-block.h')
| -rw-r--r-- | gcc/basic-block.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/gcc/basic-block.h b/gcc/basic-block.h index 654e63a9478..bddba84b7e1 100644 --- a/gcc/basic-block.h +++ b/gcc/basic-block.h @@ -511,6 +511,12 @@ struct edge_list #define BRANCH_EDGE(bb) ((bb)->succ->flags & EDGE_FALLTHRU \ ? (bb)->succ->succ_next : (bb)->succ) +/* Return expected execution frequency of the edge E. */ +#define EDGE_FREQUENCY(e) (((e)->src->frequency \ + * (e)->probability \ + + REG_BR_PROB_BASE / 2) \ + / REG_BR_PROB_BASE) + struct edge_list * create_edge_list PARAMS ((void)); void free_edge_list PARAMS ((struct edge_list *)); void print_edge_list PARAMS ((FILE *, struct edge_list *)); |