Mercurial > hg > truffle
diff src/share/vm/opto/coalesce.cpp @ 673:fbc12e71c476
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 | bd02caa94611 |
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--- a/src/share/vm/opto/coalesce.cpp Thu Mar 26 14:39:39 2009 -0700 +++ b/src/share/vm/opto/coalesce.cpp Thu Mar 26 15:04:55 2009 -0700 @@ -473,7 +473,7 @@ } // End of is two-adr // Insert a copy at a debug use for a lrg which has high frequency - if( (b->_freq < OPTO_DEBUG_SPLIT_FREQ) && n->is_MachSafePoint() ) { + if( b->_freq < OPTO_DEBUG_SPLIT_FREQ || b->is_uncommon(_phc._cfg._bbs) ) { // Walk the debug inputs to the node and check for lrg freq JVMState* jvms = n->jvms(); uint debug_start = jvms ? jvms->debug_start() : 999999; @@ -487,7 +487,7 @@ LRG &lrg = lrgs(nidx); // If this lrg has a high frequency use/def - if( lrg._maxfreq >= OPTO_LRG_HIGH_FREQ ) { + if( lrg._maxfreq >= _phc.high_frequency_lrg() ) { // If the live range is also live out of this block (like it // would be for a fast/slow idiom), the normal spill mechanism // does an excellent job. If it is not live out of this block