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| author | Indu Bhagat <indu.bhagat@oracle.com> | 2018-11-30 23:54:30 +0000 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2018-11-30 16:54:30 -0700 |
| commit | 732779d073130387365b25f83f1c5266382e3db7 (patch) | |
| tree | bcacefdd7dad2b72eb700dc648e60fa0ca518648 /gcc/profile.c | |
| parent | 4df6a9063433b4f47a2f49535b448408a9dd6b94 (diff) | |
| download | gcc-732779d073130387365b25f83f1c5266382e3db7.zip gcc-732779d073130387365b25f83f1c5266382e3db7.tar.gz gcc-732779d073130387365b25f83f1c5266382e3db7.tar.bz2 | |
coverage.c (get_coverage_counts): Use from_function_decl for precise function location.
* coverage.c (get_coverage_counts): Use from_function_decl for precise
function location.
* profile-count.c (profile_count::dump): Add handling for precise
profile quality.
* profile.c (compute_branch_probabilities): Rely on exec_counts instead
of profile_info to set profile_status of function.
(branch_prob): Do not set profile_status of function based on
profile_info. Done above based on exec_counts.
From-SVN: r266702
Diffstat (limited to 'gcc/profile.c')
| -rw-r--r-- | gcc/profile.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/gcc/profile.c b/gcc/profile.c index be6d3b8..ded0958 100644 --- a/gcc/profile.c +++ b/gcc/profile.c @@ -698,6 +698,9 @@ compute_branch_probabilities (unsigned cfg_checksum, unsigned lineno_checksum) } } + if (exec_counts) + profile_status_for_fn (cfun) = PROFILE_READ; + /* If we have real data, use them! */ if (bb_gcov_count (ENTRY_BLOCK_PTR_FOR_FN (cfun)) || !flag_guess_branch_prob) @@ -705,7 +708,7 @@ compute_branch_probabilities (unsigned cfg_checksum, unsigned lineno_checksum) bb->count = profile_count::from_gcov_type (bb_gcov_count (bb)); /* If function was not trained, preserve local estimates including statically determined zero counts. */ - else + else if (profile_status_for_fn (cfun) == PROFILE_READ) FOR_ALL_BB_FN (bb, cfun) if (!(bb->count == profile_count::zero ())) bb->count = bb->count.global0 (); @@ -718,6 +721,11 @@ compute_branch_probabilities (unsigned cfg_checksum, unsigned lineno_checksum) if (dump_file) { + fprintf (dump_file, " Profile feedback for function"); + fprintf (dump_file, ((profile_status_for_fn (cfun) == PROFILE_READ) + ? " is available \n" + : " is not available \n")); + fprintf (dump_file, "%d branches\n", num_branches); if (num_branches) for (i = 0; i < 10; i++) @@ -1317,12 +1325,12 @@ branch_prob (void) values.release (); free_edge_list (el); coverage_end_function (lineno_checksum, cfg_checksum); - if (flag_branch_probabilities && profile_info) + if (flag_branch_probabilities + && (profile_status_for_fn (cfun) == PROFILE_READ)) { struct loop *loop; if (dump_file && (dump_flags & TDF_DETAILS)) report_predictor_hitrates (); - profile_status_for_fn (cfun) = PROFILE_READ; /* At this moment we have precise loop iteration count estimates. Record them to loop structure before the profile gets out of date. */ |