[llvm-commits] [llvm] r37954 - /llvm/trunk/lib/Transforms/Scalar/LoopRotation.cpp

[Devang Patel]

Author: dpatel
Date: Fri Jul  6 16:43:22 2007
New Revision: 37954

URL: http://llvm.org/viewvc/llvm-project?rev=37954&view=rev
Log:
Request DominanceFrontiner in advance.


Modified:
    llvm/trunk/lib/Transforms/Scalar/LoopRotation.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/LoopRotation.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/LoopRotation.cpp?rev=37954&r1=37953&r2=37954&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/LoopRotation.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/LoopRotation.cpp Fri Jul  6 16:43:22 2007
@@ -63,6 +63,11 @@
       AU.addRequiredID(LoopSimplifyID);
       AU.addPreservedID(LoopSimplifyID);
       AU.addPreserved<DominatorTree>();
+      // Request DominanceFrontier now, even though Loop Rotate does
+      // not use it. This allows Pass Manager to schedule Dominance
+      // Frontier early enough such that one LPPassManager can handle
+      // loop rotate as well as licm pass.
+      AU.addRequired<DominanceFrontier>(); 
       AU.addPreserved<DominanceFrontier>();
     }