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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/103793] [12 Regression] ICE: in to_reg_br_prob_base, at profile-count.h:277 with -O3 -fno-guess-branch-probability since r12-6086-gcd5ae148c47c6dee Date: Wed, 29 Dec 2021 01:11:59 +0000 [thread overview] Message-ID: <bug-103793-4-A72dTEPg2p@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-103793-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103793 --- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Xiong Hu Luo <luoxhu@gcc.gnu.org>: https://gcc.gnu.org/g:44372676e81358de29d5c853685a7664a95d8a96 commit r12-6140-g44372676e81358de29d5c853685a7664a95d8a96 Author: Xionghu Luo <luoxhu@linux.ibm.com> Date: Tue Dec 28 19:09:14 2021 -0600 Fix ICE in lsplit when built with -O3 -fno-guess-branch-probability [PR103793] no-guess-branch-probability option requires profile_count scaling with initialized_p guard, use multiply instead of apply_scale, which will do the right thing to undefined probabilities and will not cause unnecesary roundoff errors and precision info loss. Also merge the missed part of r12-6086 of factor out function to avoid duplicate code. Regression testest pass on Power and X86. gcc/ChangeLog: PR tree-optimization/103793 * tree-ssa-loop-split.c (fix_loop_bb_probability): New function. (split_loop): Use multiply to scale loop1's exit probability. (do_split_loop_on_cond): Call fix_loop_bb_probability. gcc/testsuite/ChangeLog: PR tree-optimization/103793 * gcc.dg/pr103793.c: New test.
next prev parent reply other threads:[~2021-12-29 1:11 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-12-21 16:36 [Bug tree-optimization/103793] New: [12 Regression] ICE: in to_reg_br_prob_base, at profile-count.h:277 with -O3 -fno-guess-branch-probability zsojka at seznam dot cz 2021-12-21 16:48 ` [Bug tree-optimization/103793] [12 Regression] ICE: in to_reg_br_prob_base, at profile-count.h:277 with -O3 -fno-guess-branch-probability since r12-6086-gcd5ae148c47c6dee marxin at gcc dot gnu.org 2021-12-22 1:59 ` luoxhu at gcc dot gnu.org 2021-12-29 1:11 ` cvs-commit at gcc dot gnu.org [this message] 2021-12-29 1:16 ` luoxhu at gcc dot gnu.org
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