5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 26 template<CompLevel level> 27 bool SimpleThresholdPolicy::call_predicate_helper(int i, int b, double scale) { 28 switch(level) { 29 case CompLevel_none: 30 case CompLevel_limited_profile: 31 return (i > Tier3InvocationThreshold * scale) || 32 (i > Tier3MinInvocationThreshold * scale && i + b > Tier3CompileThreshold * scale); 33 case CompLevel_full_profile: 34 return (i > Tier4InvocationThreshold * scale) || 35 (i > Tier4MinInvocationThreshold * scale && i + b > Tier4CompileThreshold * scale); 36 } 37 return true; 38 } 39 40 template<CompLevel level> 41 bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) { 42 switch(level) { 43 case CompLevel_none: 44 case CompLevel_limited_profile: 45 return b > Tier3BackEdgeThreshold * scale; 46 case CompLevel_full_profile: 47 return b > Tier4BackEdgeThreshold * scale; 48 } 49 return true; 50 } 51 52 // Simple methods are as good being compiled with C1 as C2. 53 // Determine if a given method is such a case. 54 bool SimpleThresholdPolicy::is_trivial(methodOop method) { 55 if (method->is_accessor()) return true; 56 if (method->code() != NULL) { 57 methodDataOop mdo = method->method_data(); 58 if (mdo != NULL && mdo->num_loops() == 0 && 59 (method->code_size() < 5 || (mdo->num_blocks() < 4) && (method->code_size() < 15))) { 60 return !mdo->would_profile(); 61 } 62 } 63 return false; 64 } | 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP 26 #define SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP 27 28 29 template<CompLevel level> 30 bool SimpleThresholdPolicy::call_predicate_helper(int i, int b, double scale) { 31 switch(level) { 32 case CompLevel_none: 33 case CompLevel_limited_profile: 34 return (i > Tier3InvocationThreshold * scale) || 35 (i > Tier3MinInvocationThreshold * scale && i + b > Tier3CompileThreshold * scale); 36 case CompLevel_full_profile: 37 return (i > Tier4InvocationThreshold * scale) || 38 (i > Tier4MinInvocationThreshold * scale && i + b > Tier4CompileThreshold * scale); 39 } 40 return true; 41 } 42 43 template<CompLevel level> 44 bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) { 45 switch(level) { 46 case CompLevel_none: 47 case CompLevel_limited_profile: 48 return b > Tier3BackEdgeThreshold * scale; 49 case CompLevel_full_profile: 50 return b > Tier4BackEdgeThreshold * scale; 51 } 52 return true; 53 } 54 55 // Simple methods are as good being compiled with C1 as C2. 56 // Determine if a given method is such a case. 57 bool SimpleThresholdPolicy::is_trivial(methodOop method) { 58 if (method->is_accessor()) return true; 59 if (method->code() != NULL) { 60 methodDataOop mdo = method->method_data(); 61 if (mdo != NULL && mdo->num_loops() == 0 && 62 (method->code_size() < 5 || (mdo->num_blocks() < 4) && (method->code_size() < 15))) { 63 return !mdo->would_profile(); 64 } 65 } 66 return false; 67 } 68 69 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP |