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[Bug middle-end/77484] [6/7 Regression] Static branch predictor causes ~6-8% regression of SPEC2000 GAP
- From: "hubicka at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Sun, 01 Jan 2017 15:41:01 +0000
- Subject: [Bug middle-end/77484] [6/7 Regression] Static branch predictor causes ~6-8% regression of SPEC2000 GAP
- Auto-submitted: auto-generated
- References: <bug-77484-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77484
--- Comment #14 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Sun Jan 1 15:40:29 2017
New Revision: 243995
URL: https://gcc.gnu.org/viewcvs?rev=243995&root=gcc&view=rev
Log:
PR middle-end/77484
* predict.def (PRED_CALL): Update hitrate.
(PRED_INDIR_CALL, PRED_POLYMORPHIC_CALL): New predictors.
* predict.c (tree_estimate_probability_bb): Split CALL predictor
into direct/indirect/polymorphic variants.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/predict.c
trunk/gcc/predict.def