author | thartmann |
Tue, 11 Nov 2014 11:05:41 +0100 | |
changeset 27643 | fe8f95a2d9bc |
parent 27148 | a4b542d56e01 |
child 28650 | 772aaab2582f |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#ifndef SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP |
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#define SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP |
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template<CompLevel level> |
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bool SimpleThresholdPolicy::call_predicate_helper(int i, int b, double scale) { |
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switch(level) { |
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case CompLevel_none: |
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case CompLevel_limited_profile: |
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return (i >= Tier3InvocationThreshold * scale) || |
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(i >= Tier3MinInvocationThreshold * scale && i + b >= Tier3CompileThreshold * scale); |
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case CompLevel_full_profile: |
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return (i >= Tier4InvocationThreshold * scale) || |
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(i >= Tier4MinInvocationThreshold * scale && i + b >= Tier4CompileThreshold * scale); |
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} |
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return true; |
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} |
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||
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template<CompLevel level> |
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bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) { |
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switch(level) { |
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case CompLevel_none: |
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case CompLevel_limited_profile: |
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return b >= Tier3BackEdgeThreshold * scale; |
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case CompLevel_full_profile: |
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return b >= Tier4BackEdgeThreshold * scale; |
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} |
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return true; |
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} |
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||
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// Simple methods are as good being compiled with C1 as C2. |
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// Determine if a given method is such a case. |
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bool SimpleThresholdPolicy::is_trivial(Method* method) { |
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if (method->is_accessor() || |
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method->is_constant_getter()) { |
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return true; |
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} |
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if (method->has_loops() || method->code_size() >= 15) { |
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return false; |
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} |
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MethodData* mdo = method->method_data(); |
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if (mdo != NULL && !mdo->would_profile() && |
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(method->code_size() < 5 || (mdo->num_blocks() < 4))) { |
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return true; |
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} |
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return false; |
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} |
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#endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP |