[llvm-commits] [llvm] r66055 - /llvm/trunk/lib/Transforms/Scalar/ScalarReplAggregates.cpp

[Chris Lattner]

Author: lattner
Date: Wed Mar  4 13:23:25 2009
New Revision: 66055

URL: http://llvm.org/viewvc/llvm-project?rev=66055&view=rev
Log:
complete comment.

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

Modified: llvm/trunk/lib/Transforms/Scalar/ScalarReplAggregates.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/ScalarReplAggregates.cpp?rev=66055&r1=66054&r2=66055&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/ScalarReplAggregates.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/ScalarReplAggregates.cpp Wed Mar  4 13:23:25 2009
@@ -721,7 +721,9 @@
                                         SmallVector<AllocaInst*, 32> &NewElts) {
   
   // If this is a memcpy/memmove, construct the other pointer as the
-  // appropriate type.  The "Other" pointer is the pointer that goes to 
+  // appropriate type.  The "Other" pointer is the pointer that goes to memory
+  // that doesn't have anything to do with the alloca that we are promoting. For
+  // memset, this Value* stays null.
   Value *OtherPtr = 0;
   unsigned MemAlignment = MI->getAlignment()->getZExtValue();
   if (MemCpyInst *MCI = dyn_cast<MemCpyInst>(MI)) {