[llvm-commits] [llvm] r47111 - /llvm/trunk/lib/Transforms/Scalar/GVN.cpp

[Nick Lewycky]

Author: nicholas
Date: Thu Feb 14 01:11:24 2008
New Revision: 47111

URL: http://llvm.org/viewvc/llvm-project?rev=47111&view=rev
Log:
Fix PR2032. Inform the alias analysis of changes to the underlying program.

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

Modified: llvm/trunk/lib/Transforms/Scalar/GVN.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/GVN.cpp?rev=47111&r1=47110&r2=47111&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/GVN.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/GVN.cpp Thu Feb 14 01:11:24 2008
@@ -857,6 +857,8 @@
     
     PN->addIncoming(val, *PI);
   }
+  AliasAnalysis& AA = getAnalysis<AliasAnalysis>();
+  AA.copyValue(orig, PN);
   
   // Attempt to collapse PHI nodes that are trivially redundant
   Value* v = CollapsePhi(PN);