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diff src/share/vm/opto/block.hpp @ 673:fbc12e71c476

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6810845: Performance regression in mpegaudio on x64 Summary: Used the outer loop frequency in frequencies checks in RA. Reviewed-by: never, twisti
author kvn
date Thu, 26 Mar 2009 15:04:55 -0700
parents 98cb887364d3
children acba6af809c8
line wrap: on
line diff
--- a/src/share/vm/opto/block.hpp	Thu Mar 26 14:39:39 2009 -0700
+++ b/src/share/vm/opto/block.hpp	Thu Mar 26 15:04:55 2009 -0700
@@ -371,6 +371,7 @@
   Block *_broot;                // Basic block of root
   uint _rpo_ctr;
   CFGLoop* _root_loop;
+  float _outer_loop_freq;       // Outmost loop frequency
 
   // Per node latency estimation, valid only during GCM
   GrowableArray<uint> _node_latency;
@@ -537,6 +538,7 @@
   void compute_loop_depth(int depth);
   void compute_freq(); // compute frequency with loop assuming head freq 1.0f
   void scale_freq();   // scale frequency by loop trip count (including outer loops)
+  float outer_loop_freq() const; // frequency of outer loop
   bool in_loop_nest(Block* b);
   float trip_count() const { return 1.0f / _exit_prob; }
   virtual bool is_loop()  { return true; }