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| author | Jan Hubicka <hubicka@ucw.cz> | 2016-06-25 13:56:52 +0200 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2016-06-25 11:56:52 +0000 |
| commit | 888ed1a39a46d55a7c1f2357d31eb4b59e4dc721 (patch) | |
| tree | 412e6f58c87e87e9651ee2208731ac15e90260c8 /gcc/predict.def | |
| parent | 1527dee9df41b5130f0d767f91bc89f9c990535c (diff) | |
| download | gcc-888ed1a39a46d55a7c1f2357d31eb4b59e4dc721.zip gcc-888ed1a39a46d55a7c1f2357d31eb4b59e4dc721.tar.gz gcc-888ed1a39a46d55a7c1f2357d31eb4b59e4dc721.tar.bz2 | |
predict.c: Include ipa-utils.h
* predict.c: Include ipa-utils.h
(tree_bb_level_prediction): Predict recursive calls.
(tree_estimate_probability_bb): Skip inexpensive calls for call
predictor.
* predict.def (PRED_RECURSIVE_CALL): New.
* gcc.dg/predict-10.c: New test.
From-SVN: r237780
Diffstat (limited to 'gcc/predict.def')
| -rw-r--r-- | gcc/predict.def | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/gcc/predict.def b/gcc/predict.def index d3bc757..2f6d6cd 100644 --- a/gcc/predict.def +++ b/gcc/predict.def @@ -112,6 +112,9 @@ DEF_PREDICTOR (PRED_TREE_FPOPCODE, "fp_opcode (on trees)", HITRATE (90), 0) /* Branch guarding call is probably taken. */ DEF_PREDICTOR (PRED_CALL, "call", HITRATE (67), 0) +/* Recursive calls are usually not taken or the function will recurse indefinitely. */ +DEF_PREDICTOR (PRED_RECURSIVE_CALL, "recursive call", HITRATE (75), 0) + /* Branch causing function to terminate is probably not taken. FIXME: early return currently predicts code: int foo (int a) |