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[Bug target/47440] New: Use LCM for vzeroupper optimization
- From: "hjl.tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 24 Jan 2011 17:25:42 +0000
- Subject: [Bug target/47440] New: Use LCM for vzeroupper optimization
- Auto-submitted: auto-generated
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47440
Summary: Use LCM for vzeroupper optimization
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: hjl.tools@gmail.com
From:
http://gcc.gnu.org/ml/gcc-patches/2010-12/msg01923.html
http://gcc.gnu.org/ml/gcc-patches/2011-01/msg00967.html
LCM infrastructure (see lcm.c) is suggested for placing vzerouppers at
optimum points. Targeting 4.7.