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| author | Rong Xu <xur@google.com> | 2013-10-03 17:13:50 +0000 |
|---|---|---|
| committer | Rong Xu <xur@gcc.gnu.org> | 2013-10-03 17:13:50 +0000 |
| commit | 942df7390fb64e26bb7ed6ac58ee9911be4ea5cb (patch) | |
| tree | 48352394b524e6a8198bc62633939861961f8a7e /gcc/predict.def | |
| parent | 2ef7251f6cd9e228cafa3473929ff55c9cb56928 (diff) | |
| download | gcc-942df7390fb64e26bb7ed6ac58ee9911be4ea5cb.zip gcc-942df7390fb64e26bb7ed6ac58ee9911be4ea5cb.tar.gz gcc-942df7390fb64e26bb7ed6ac58ee9911be4ea5cb.tar.bz2 | |
predict.c (tree_predict_by_opcode): Get the probability for builtin_expect from param builtin_expect_probability.
* predict.c (tree_predict_by_opcode): Get the probability
for builtin_expect from param builtin_expect_probability.
* params.def (BUILTIN_EXPECT_PROBABILITY): New parameter.
* predict.def (PRED_BUILTIN_EXPECT_RELAXED): Fix comments.
* doc/invoke.texi: Add documentation for builtin-expect-probability.
* gcc.target/i386/cold-attribute-2.c: Fix the test by using original
probability.
* gcc.dg/tree-ssa/ipa-split-5.c: Ditto.
* gcc.dg/tree-ssa/ipa-split-6.c: Ditto.
--This li (t)ene, and those below, will be ignored--
M gcc/params.def
M gcc/predict.def
M gcc/ChangeLog
M gcc/testsuite/gcc.dg/tree-ssa/ipa-split-5.c
M gcc/testsuite/gcc.dg/tree-ssa/ipa-split-6.c
M gcc/testsuite/gcc.target/i386/cold-attribute-2.c
M gcc/predict.c
M gcc/doc/invoke.texi
From-SVN: r203167
Diffstat (limited to 'gcc/predict.def')
| -rw-r--r-- | gcc/predict.def | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/predict.def b/gcc/predict.def index 0006233..f8dba66 100644 --- a/gcc/predict.def +++ b/gcc/predict.def @@ -57,7 +57,10 @@ DEF_PREDICTOR (PRED_UNCONDITIONAL, "unconditional jump", PROB_ALWAYS, DEF_PREDICTOR (PRED_LOOP_ITERATIONS, "loop iterations", PROB_ALWAYS, PRED_FLAG_FIRST_MATCH) -/* Hints dropped by user via __builtin_expect feature. */ +/* Hints dropped by user via __builtin_expect feature. Note: the + probability of PROB_VERY_LIKELY is now overwritten by param + builtin_expect_probability with a default value of HITRATE(90). + Refer to param.def for details. */ DEF_PREDICTOR (PRED_BUILTIN_EXPECT, "__builtin_expect", PROB_VERY_LIKELY, PRED_FLAG_FIRST_MATCH) |