[llvm-commits] [llvm] r112722 - /llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp

[Owen Anderson]

Author: resistor
Date: Wed Sep  1 13:27:22 2010
New Revision: 112722

URL: http://llvm.org/viewvc/llvm-project?rev=112722&view=rev
Log:
JumpThreading keeps LazyValueInfo up to date, so we don't need to rerun it
if we schedule another LVI-using pass afterwards.

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=112722&r1=112721&r2=112722&view=diff
==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/JumpThreading.cpp Wed Sep  1 13:27:22 2010
@@ -100,8 +100,10 @@
     bool runOnFunction(Function &F);
     
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
-      if (EnableLVI)
+      if (EnableLVI) {
         AU.addRequired<LazyValueInfo>();
+        AU.addPreserved<LazyValueInfo>();
+      }
     }
     
     void FindLoopHeaders(Function &F);