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From: "gabravier at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/96696] New: Failure to optimize div+mul to mod+sub
Date: Wed, 19 Aug 2020 00:11:15 +0000 [thread overview]
Message-ID: <bug-96696-4@http.gcc.gnu.org/bugzilla/> (raw)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96696
Bug ID: 96696
Summary: Failure to optimize div+mul to mod+sub
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: gabravier at gmail dot com
Target Milestone: ---
int f(int x, int y)
{
return (x / y) * y;
}
This can be optimized to `return x - (x % y);`. This transformation is done by
LLVM, but not by GCC.
next reply other threads:[~2020-08-19 0:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-19 0:11 gabravier at gmail dot com [this message]
2020-08-25 11:04 ` [Bug tree-optimization/96696] " rguenth at gcc dot gnu.org
2021-01-02 9:11 ` jakub at gcc dot gnu.org
2021-01-15 10:51 ` rguenth at gcc dot gnu.org
2021-01-16 11:35 ` jakub at gcc dot gnu.org
2021-04-27 12:46 ` cvs-commit at gcc dot gnu.org
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