diff options
| author | Dehao Chen <dehao@google.com> | 2014-10-21 17:59:30 +0000 |
|---|---|---|
| committer | Dehao Chen <dehao@gcc.gnu.org> | 2014-10-21 17:59:30 +0000 |
| commit | be3c16c474629e69c6c4cd6465ffa4b572cc6460 (patch) | |
| tree | 2dca135cb3eadb5a684bff2c9f64afbafd4ba80e /gcc/predict.c | |
| parent | 3edf64aa919b9bf725672bd0ad91bfd30c6a31df (diff) | |
| download | gcc-be3c16c474629e69c6c4cd6465ffa4b572cc6460.zip gcc-be3c16c474629e69c6c4cd6465ffa4b572cc6460.tar.gz gcc-be3c16c474629e69c6c4cd6465ffa4b572cc6460.tar.bz2 | |
Add AutoFDO.
gcc/ChangeLog:
2014-10-21 Dehao Chen <dehao@google.com>
* auto-profile.c: New file.
* auto-profile.h: New file.
* basic-block.h (maybe_hot_count_p): New export func.
(add_working_set): New export func.
* gcov-io.h (GCOV_TAG_AFDO_FILE_NAMES): New tag.
(GCOV_TAG_AFDO_FUNCTION): Likewise.
(GCOV_TAG_AFDO_WORKING_SET): Likewise.
* opts.c (enable_fdo_optimizations): New func.
(common_handle_option): Handle -fauto-profile flag.
* ipa-inline.c (want_early_inline_function_p): Iterative-einline.
(class pass_early_inline): Export early_inliner.
(early_inliner): Likewise.
(pass_early_inline::execute): Likewise.
* ipa-inline.h (early_inliner): Likewise.
* predict.c (maybe_hot_count_p): New export func.
(counts_to_freqs): AutoFDO logic.
(rebuild_frequencies): Likewise.
* tree-profile.c (pass_ipa_tree_profile::gate): Likewise.
* profile.c (add_working_set): New func.
* Makefile.in (auto-profile.o): New object file.
* passes.def (pass_ipa_auto_profile): New pass.
* tree-ssa-live.c (remove_unused_scope_block_p): AutoFDO logic.
* tree-pass.h (make_pass_ipa_auto_profile): New pass.
* toplev.c (compile_file): AutoFDO logic.
* doc/invoke.texi (-fauto-profile): New doc.
* coverage.c (coverage_init): AutoFDO logic.
* common.opt (-fauto-profile): New flag.
* timevar.def (TV_IPA_AUTOFDO): New tag.
* value-prof.c (gimple_alloc_histogram_value): New export func.
(check_ic_target): Likewise.
* value-prof.h (gimple_alloc_histogram_value): Likewise.
(check_ic_target): Likewise.
From-SVN: r216523
Diffstat (limited to 'gcc/predict.c')
| -rw-r--r-- | gcc/predict.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/predict.c b/gcc/predict.c index 5f5d4a5..96c7661 100644 --- a/gcc/predict.c +++ b/gcc/predict.c @@ -167,7 +167,7 @@ set_hot_bb_threshold (gcov_type min) /* Return TRUE if frequency FREQ is considered to be hot. */ -static inline bool +bool maybe_hot_count_p (struct function *fun, gcov_type count) { if (fun && profile_status_for_fn (fun) != PROFILE_READ) @@ -2859,7 +2859,7 @@ counts_to_freqs (void) /* Don't overwrite the estimated frequencies when the profile for the function is missing. We may drop this function PROFILE_GUESSED later in drop_profile (). */ - if (!ENTRY_BLOCK_PTR_FOR_FN (cfun)->count) + if (!flag_auto_profile && !ENTRY_BLOCK_PTR_FOR_FN (cfun)->count) return 0; FOR_BB_BETWEEN (bb, ENTRY_BLOCK_PTR_FOR_FN (cfun), NULL, next_bb) @@ -3230,7 +3230,8 @@ rebuild_frequencies (void) count_max = MAX (bb->count, count_max); if (profile_status_for_fn (cfun) == PROFILE_GUESSED - || (profile_status_for_fn (cfun) == PROFILE_READ && count_max < REG_BR_PROB_BASE/10)) + || (!flag_auto_profile && profile_status_for_fn (cfun) == PROFILE_READ + && count_max < REG_BR_PROB_BASE/10)) { loop_optimizer_init (0); add_noreturn_fake_exit_edges (); |