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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: Fri, 06 Jan 2017 16:10:41 +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 #21 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
Author: hubicka
Date: Fri Jan 6 16:10:09 2017
New Revision: 244167
URL: https://gcc.gnu.org/viewcvs?rev=244167&root=gcc&view=rev
Log:
PR middle-end/77484
* predict.def (PRED_POLYMORPHIC_CALL): Set to 58
* predict.c (tree_estimate_probability_bb): Reverse direction of
polymorphic call predictor.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/predict.c
trunk/gcc/predict.def