Mercurial > hg > truffle
view src/os_cpu/linux_x86/vm/prefetch_linux_x86.inline.hpp @ 568:30663ca5e8f4
6805724: ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
Summary: C2, ModLNode::Ideal() generates functionally incorrect graph when divisor is any (2^k-1) constant.
Reviewed-by: rasbold
author | twisti |
---|---|
date | Mon, 16 Feb 2009 07:19:26 -0800 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003 Sun Microsystems, Inc. All Rights Reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ inline void Prefetch::read (void *loc, intx interval) { #ifdef AMD64 __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval)); #endif // AMD64 } inline void Prefetch::write(void *loc, intx interval) { #ifdef AMD64 // Do not use the 3dnow prefetchw instruction. It isn't supported on em64t. // __asm__ ("prefetchw (%0,%1,1)" : : "r" (loc), "r" (interval)); __asm__ ("prefetcht0 (%0,%1,1)" : : "r" (loc), "r" (interval)); #endif // AMD64 }