Mercurial > hg > graal-compiler
view src/cpu/sparc/vm/icache_sparc.cpp @ 10370:47bdfb3d010f
8015486: PSScavenge::is_obj_in_young is unnecessarily slow with UseCompressedOops
Summary: Compare compressed oops to a compressed young gen boundary instead of uncompressing the oops before doing the young gen boundary check.
Reviewed-by: brutisso, jmasa
author | stefank |
---|---|
date | Thu, 30 May 2013 10:58:16 +0200 |
parents | f0c2369fda5a |
children |
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/* * Copyright (c) 1997, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "asm/macroAssembler.inline.hpp" #include "runtime/icache.hpp" #define __ _masm-> void ICacheStubGenerator::generate_icache_flush( ICache::flush_icache_stub_t* flush_icache_stub ) { StubCodeMark mark(this, "ICache", "flush_icache_stub"); address start = __ pc(); Label L; __ bind(L); __ flush( O0, G0 ); __ deccc( O1 ); __ br(Assembler::positive, false, Assembler::pn, L); __ delayed()->inc( O0, 8 ); __ retl(false); __ delayed()->mov( O2, O0 ); // handshake with caller to make sure it happened! // Must be set here so StubCodeMark destructor can call the flush stub. *flush_icache_stub = (ICache::flush_icache_stub_t)start; }; #undef __