[llvm-commits] CVS: llvm/lib/Analysis/DataStructure/DataStructure.cpp

[Chris Lattner]

Changes in directory llvm/lib/Analysis/DataStructure:

DataStructure.cpp updated: 1.143 -> 1.144

---
Log message:

Eliminate the call to removeTriviallyDeadNodes from updateFromGlobals graph,
moving it to the start of removeDeadNodes.  This speeds up DSA by 2s on perlbmk
from 41s


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Diffs of the changes:  (+1 -4)

Index: llvm/lib/Analysis/DataStructure/DataStructure.cpp
diff -u llvm/lib/Analysis/DataStructure/DataStructure.cpp:1.143 llvm/lib/Analysis/DataStructure/DataStructure.cpp:1.144
--- llvm/lib/Analysis/DataStructure/DataStructure.cpp:1.143	Tue Jan 27 21:03:06 2004
+++ llvm/lib/Analysis/DataStructure/DataStructure.cpp	Tue Jan 27 21:24:41 2004
@@ -1071,9 +1071,6 @@
       if (It != GlobalsGraph->ScalarMap.end())
         RC.merge(getNodeForValue(*I), It->second);
     }
-  
-  // Merging global nodes leaves behind unused nodes: get rid of them now.
-  removeTriviallyDeadNodes();
 }
 
 /// cloneInto - Clone the specified DSGraph into the current graph.  The
@@ -1597,7 +1594,7 @@
 
   // Reduce the amount of work we have to do... remove dummy nodes left over by
   // merging...
-  //removeTriviallyDeadNodes();
+  removeTriviallyDeadNodes();
 
   TIME_REGION(X, "removeDeadNodes");