src/share/vm/runtime/simpleThresholdPolicy.inline.hpp
Index Unified diffs Context diffs Sdiffs Patch New Old Previous File Next File hotspot Sdiff src/share/vm/runtime

src/share/vm/runtime/simpleThresholdPolicy.inline.hpp

Print this page




  37           (i >= Tier4MinInvocationThreshold * scale && i + b >= Tier4CompileThreshold * scale);
  38   }
  39   return true;
  40 }
  41 
  42 template<CompLevel level>
  43 bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) {
  44   switch(level) {
  45   case CompLevel_none:
  46   case CompLevel_limited_profile:
  47     return b >= Tier3BackEdgeThreshold * scale;
  48   case CompLevel_full_profile:
  49     return b >= Tier4BackEdgeThreshold * scale;
  50   }
  51   return true;
  52 }
  53 
  54 // Simple methods are as good being compiled with C1 as C2.
  55 // Determine if a given method is such a case.
  56 bool SimpleThresholdPolicy::is_trivial(Method* method) {
  57   if (method->is_accessor()) return true;
  58   if (method->code() != NULL) {
  59     MethodData* mdo = method->method_data();
  60     if (mdo != NULL && mdo->num_loops() == 0 &&
  61         (method->code_size() < 5  || (mdo->num_blocks() < 4) && (method->code_size() < 15))) {
  62       return !mdo->would_profile();
  63     }




  64   }
  65   return false;
  66 }
  67 
  68 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP


  37           (i >= Tier4MinInvocationThreshold * scale && i + b >= Tier4CompileThreshold * scale);
  38   }
  39   return true;
  40 }
  41 
  42 template<CompLevel level>
  43 bool SimpleThresholdPolicy::loop_predicate_helper(int i, int b, double scale) {
  44   switch(level) {
  45   case CompLevel_none:
  46   case CompLevel_limited_profile:
  47     return b >= Tier3BackEdgeThreshold * scale;
  48   case CompLevel_full_profile:
  49     return b >= Tier4BackEdgeThreshold * scale;
  50   }
  51   return true;
  52 }
  53 
  54 // Simple methods are as good being compiled with C1 as C2.
  55 // Determine if a given method is such a case.
  56 bool SimpleThresholdPolicy::is_trivial(Method* method) {
  57   if (method->is_accessor() ||
  58       method->is_constant_getter()) {
  59     return true;
  60   }
  61   if (method->has_loops() || method->code_size() >= 15) {
  62     return false;
  63   }
  64   MethodData* mdo = method->method_data();
  65   if (mdo != NULL && !mdo->would_profile() &&
  66       (method->code_size() < 5  || (mdo->num_blocks() < 4))) {
  67     return true;
  68   }
  69   return false;
  70 }
  71 
  72 #endif // SHARE_VM_RUNTIME_SIMPLETHRESHOLDPOLICY_INLINE_HPP
src/share/vm/runtime/simpleThresholdPolicy.inline.hpp
Index Unified diffs Context diffs Sdiffs Patch New Old Previous File Next File