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From: "rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/108997] GCC prediction on bool comparisons seems wrong Date: Fri, 03 Mar 2023 08:43:50 +0000 [thread overview] Message-ID: <bug-108997-4-sSecPWahko@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-108997-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108997 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hubicka at gcc dot gnu.org --- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> --- Predictions for bb 2 DS theory heuristics: 33.00% combined heuristics: 33.00% call heuristics of edge 2->3: 33.00% so it seems it's about "conditional call" which is reasonable I think. Doing void use2(int *); int x = 1; void foo(bool cond, int * p) { if (cond) { x = 1; } use2(p); } shows even probabilities, so does if (cond) use1 (p); else use2 (p);
next prev parent reply other threads:[~2023-03-03 8:43 UTC|newest] Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-03-02 22:51 [Bug tree-optimization/108997] New: " pinskia at gcc dot gnu.org 2023-03-02 23:26 ` [Bug tree-optimization/108997] " nok.raven at gmail dot com 2023-03-02 23:35 ` pinskia at gcc dot gnu.org 2023-03-03 0:05 ` nok.raven at gmail dot com 2023-03-03 0:10 ` pinskia at gcc dot gnu.org 2023-03-03 8:43 ` rguenth at gcc dot gnu.org [this message] 2023-03-07 14:49 ` marxin at gcc dot gnu.org
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