Mercurial > hg > graal-jvmci-8
view src/share/vm/runtime/simpleThresholdPolicy.inline.hpp @ 22599:a7114a5e69e1
Don't expect internal fields when rematerializing object for C2 methods
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Tue, 22 Sep 2015 08:51:10 -0700 |
parents | 569c82ebb96e |
children | 3ef45d0a6d77 |
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/* * Copyright (c) 2001, 2012, 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. * */ #ifndef SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP #define SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP template<CompLevel level> bool SimpleThresholdPolicy::call_predicate_helper(int i, int b, double scale) { switch(level) { case CompLevel_none: case CompLevel_limited_profile: return (i > Tier3InvocationThreshold * scale) || (i > Tier3MinInvocationThreshold * scale && i + b > Tier3CompileThreshold * scale); case CompLevel_full_profile: return (i > Tier4InvocationThreshold * scale) || (i > Tier4MinInvocationThreshold * scale && i + b > Tier4CompileThreshold * scale); } return true; } template<CompLevel level> bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) { switch(level) { case CompLevel_none: case CompLevel_limited_profile: return b > Tier3BackEdgeThreshold * scale; case CompLevel_full_profile: return b > Tier4BackEdgeThreshold * scale; } return true; } // Simple methods are as good being compiled with C1 as C2. // Determine if a given method is such a case. bool SimpleThresholdPolicy::is_trivial(Method* method) { if (method->is_accessor() || method->is_constant_getter()) { return true; } #ifdef COMPILERJVMCI if (TieredCompilation && CompileBroker::compiler(CompLevel_full_optimization) != NULL && CompileBroker::compiler(CompLevel_full_optimization)->is_trivial(method)) { return true; } #endif if (method->has_loops() || method->code_size() >= 15) { return false; } MethodData* mdo = method->method_data(); if (mdo != NULL && !mdo->would_profile() && (method->code_size() < 5 || (mdo->num_blocks() < 4))) { return true; } return false; } #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP