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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 rtl-optimization/97421] aarch64: Wrong code with -O2 -fmodulo-sched
Date: Thu, 24 Dec 2020 16:42:37 +0000 [thread overview]
Message-ID: <bug-97421-4-oRMeBfh8o8@http.gcc.gnu.org/bugzilla/> (raw)
In-Reply-To: <bug-97421-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97421
--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-9 branch has been updated by Roman Zhuykov
<zhroma@gcc.gnu.org>:
https://gcc.gnu.org/g:2435878321b053aebb2e2a886465662199542875
commit r9-9129-g2435878321b053aebb2e2a886465662199542875
Author: Roman Zhuykov <zhroma@ispras.ru>
Date: Thu Dec 24 19:42:14 2020 +0300
modulo-sched: Carefully process loop counter initialization [PR97421]
Do not allow direct adjustment of pre-header initialization instruction for
count register if is read in some instruction below in that basic block.
gcc/ChangeLog:
PR rtl-optimization/97421
* modulo-sched.c (generate_prolog_epilog): Remove forward
declaration, adjust last argument name and type.
(const_iteration_count): Add bool pointer parameter to return
whether count register is read in pre-header after its
initialization.
(sms_schedule): Fix count register initialization adjustment
procedure according to what const_iteration_count said.
gcc/testsuite/ChangeLog:
PR rtl-optimization/97421
* gcc.c-torture/execute/pr97421-1.c: New test.
* gcc.c-torture/execute/pr97421-2.c: New test.
* gcc.c-torture/execute/pr97421-3.c: New test.
(cherry picked from commit 4eb8f93d026eaa1de9b4820337069f3ce3465cd0)
next prev parent reply other threads:[~2020-12-24 16:42 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-14 13:58 [Bug tree-optimization/97421] New: [10/11 Regression] aarch64: Wrong code with -O2 -fmodulo-sched since r10-1318-ga7e8a46 acoplan at gcc dot gnu.org
2020-10-14 14:00 ` [Bug tree-optimization/97421] " acoplan at gcc dot gnu.org
2020-10-14 14:09 ` [Bug rtl-optimization/97421] " rguenth at gcc dot gnu.org
2020-10-14 14:10 ` rguenth at gcc dot gnu.org
2020-10-14 14:27 ` acoplan at gcc dot gnu.org
2020-10-14 19:24 ` [Bug rtl-optimization/97421] aarch64: Wrong code with -O2 -fmodulo-sched acoplan at gcc dot gnu.org
2020-11-20 10:46 ` zhroma at gcc dot gnu.org
2020-11-20 10:54 ` zhroma at gcc dot gnu.org
2020-11-20 10:55 ` zhroma at gcc dot gnu.org
2020-11-20 11:07 ` zhroma at gcc dot gnu.org
2020-12-05 15:47 ` cvs-commit at gcc dot gnu.org
2020-12-24 16:41 ` cvs-commit at gcc dot gnu.org
2020-12-24 16:42 ` cvs-commit at gcc dot gnu.org [this message]
2020-12-24 16:44 ` cvs-commit at gcc dot gnu.org
2020-12-24 17:22 ` zhroma at gcc dot gnu.org
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