diff options
| author | Teresa Johnson <tejohnson@google.com> | 2012-11-23 08:49:43 +0000 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2012-11-23 08:49:43 +0000 |
| commit | b131b583978ceadbe54325be3a09710a48481df2 (patch) | |
| tree | c3a33c43f2e5098a3927078c4b315cd7408551cc /gcc/params.def | |
| parent | 3409d40e47ed30f1b6dca3fa074c4094efbf5b50 (diff) | |
| download | gcc-b131b583978ceadbe54325be3a09710a48481df2.zip gcc-b131b583978ceadbe54325be3a09710a48481df2.tar.gz gcc-b131b583978ceadbe54325be3a09710a48481df2.tar.bz2 | |
predict.c (maybe_hot_count_p): Use threshold from profiled working set instead of hard limit.
* predict.c (maybe_hot_count_p): Use threshold from profiled working
set instead of hard limit.
(cgraph_maybe_hot_edge_p): Invoke maybe_hot_count_p() instead of
directly checking limit.
* params.def (HOT_BB_COUNT_FRACTION): Remove.
(HOT_BB_COUNT_WS_PERMILLE): New parameter.
* invoke.texi (hot-bb-count-fraction): Remove.
(hot-bb-count-ws-permille): Document.
Co-Authored-By: Jan Hubicka <jh@suse.cz>
From-SVN: r193747
Diffstat (limited to 'gcc/params.def')
| -rw-r--r-- | gcc/params.def | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/gcc/params.def b/gcc/params.def index 41177ee..38aaf4b 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -365,10 +365,11 @@ DEFPARAM(PARAM_SMS_LOOP_AVERAGE_COUNT_THRESHOLD, "A threshold on the average loop count considered by the swing modulo scheduler", 0, 0, 0) -DEFPARAM(HOT_BB_COUNT_FRACTION, - "hot-bb-count-fraction", - "Select fraction of the maximal count of repetitions of basic block in program given basic block needs to have to be considered hot", - 10000, 0, 0) +DEFPARAM(HOT_BB_COUNT_WS_PERMILLE, + "hot-bb-count-ws-permille", + "A basic block profile count is considered hot if it contributes to " + "the given permillage of the entire profiled execution", + 999, 0, 1000) DEFPARAM(HOT_BB_FREQUENCY_FRACTION, "hot-bb-frequency-fraction", "Select fraction of the maximal frequency of executions of basic block in function given basic block needs to have to be considered hot", @@ -392,7 +393,7 @@ DEFPARAM (PARAM_ALIGN_LOOP_ITERATIONS, flatten the profile. We need to cut the maximal predicted iterations to large enough iterations - so the loop appears important, but safely within HOT_BB_COUNT_FRACTION + so the loop appears important, but safely within maximum hotness range. */ DEFPARAM(PARAM_MAX_PREDICTED_ITERATIONS, |