[llvm-commits] [llvm] r86766 - /llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp

[Chris Lattner]

Author: lattner
Date: Tue Nov 10 18:21:58 2009
New Revision: 86766

URL: http://llvm.org/viewvc/llvm-project?rev=86766&view=rev
Log:
add a fixme

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

Modified: llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp?rev=86766&r1=86765&r2=86766&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp Tue Nov 10 18:21:58 2009
@@ -169,6 +169,10 @@
   /// Ignore PHI nodes, these will be flattened when duplication happens.
   BasicBlock::const_iterator I = BB->getFirstNonPHI();
   
+  // FIXME: THREADING will delete values that are just used to compute the
+  // branch, so they shouldn't count against the duplication cost.
+  
+  
   // Sum up the cost of each instruction until we get to the terminator.  Don't
   // include the terminator because the copy won't include it.
   unsigned Size = 0;