From: Eli Friedman <eli.friedman@gmail.com>
Date: Tue, 13 Sep 2011 01:28:59 +0000 (+0000)
Subject: Add comment to clarify the behavior of a helper in DSE.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=1582e7f1e255c19595f82cb447e52869196dec58;p=oota-llvm.git

Add comment to clarify the behavior of a helper in DSE.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139571 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Transforms/Scalar/DeadStoreElimination.cpp b/lib/Transforms/Scalar/DeadStoreElimination.cpp
index 2267320ce94..ffa77098bc8 100644
--- a/lib/Transforms/Scalar/DeadStoreElimination.cpp
+++ b/lib/Transforms/Scalar/DeadStoreElimination.cpp
@@ -159,6 +159,8 @@ static bool hasMemoryWrite(Instruction *I) {
 }
 
 /// getLocForWrite - Return a Location stored to by the specified instruction.
+/// If isRemovable returns true, this function and getLocForRead completely
+/// describe the memory operations for this instruction.
 static AliasAnalysis::Location
 getLocForWrite(Instruction *Inst, AliasAnalysis &AA) {
   if (StoreInst *SI = dyn_cast<StoreInst>(Inst))