Fix a comment that stated the wrong thing.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21638 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/SimplifyLibCalls.cpp b/lib/Transforms/IPO/SimplifyLibCalls.cpp
index 95faac2..9a4a4f3 100644
--- a/lib/Transforms/IPO/SimplifyLibCalls.cpp
+++ b/lib/Transforms/IPO/SimplifyLibCalls.cpp
@@ -511,11 +511,8 @@
virtual bool OptimizeCall(CallInst* ci, SimplifyLibCalls& SLC)
{
// First, check to see if src and destination are the same. If they are,
- // then the optimization is to replace the CallInst with the destination
- // because the call is a no-op. Note that this corresponds to the
- // degenerate strcpy(X,X) case which should have "undefined" results
- // according to the C specification. However, it occurs sometimes and
- // we optimize it as a no-op.
+ // then the optimization is to replace the CallInst with a constant 0
+ // because the call is a no-op.
Value* s1 = ci->getOperand(1);
Value* s2 = ci->getOperand(2);
if (s1 == s2)