[llvm-commits] [llvm] r61723 - /llvm/trunk/lib/CodeGen/PreAllocSplitting.cpp

[Owen Anderson]

Author: resistor
Date: Mon Jan  5 12:32:26 2009
New Revision: 61723

URL: http://llvm.org/viewvc/llvm-project?rev=61723&view=rev
Log:
Get rid of sentinel insertion in interval reconstruction.  It just masked the
problem, rather than fixing it.  The problem has now been fixed the right way.

Modified:
    llvm/trunk/lib/CodeGen/PreAllocSplitting.cpp

Modified: llvm/trunk/lib/CodeGen/PreAllocSplitting.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/PreAllocSplitting.cpp?rev=61723&r1=61722&r2=61723&view=diff

==============================================================================
--- llvm/trunk/lib/CodeGen/PreAllocSplitting.cpp (original)
+++ llvm/trunk/lib/CodeGen/PreAllocSplitting.cpp Mon Jan  5 12:32:26 2009
@@ -605,11 +605,6 @@
   else if (!intrablock && LiveOut.count(MBB))
     return LiveOut[MBB];
   
-  // Insert a sentinel into the map (which also acts as the DFS stack) so that
-  // we won't get stuck in infinite recursion when processing a loop.
-  if (!intrablock)
-    LiveOut[MBB] = 0;
-  
   typedef DenseMap<MachineBasicBlock*, SmallPtrSet<MachineInstr*, 2> > RegMap;
   
   // Check if our block contains any uses or defs.