[ModRefInfo] Initialize ArgMask to MRI_NoModRef.
llvm-svn: 319831
diff --git a/llvm/lib/Analysis/AliasAnalysis.cpp b/llvm/lib/Analysis/AliasAnalysis.cpp
index 449d90f..97ea0fc 100644
--- a/llvm/lib/Analysis/AliasAnalysis.cpp
+++ b/llvm/lib/Analysis/AliasAnalysis.cpp
@@ -263,7 +263,7 @@
// - If CS2 modifies location, dependence exists if CS1 reads or writes.
// - If CS2 only reads location, dependence exists if CS1 writes.
ModRefInfo ArgModRefCS2 = getArgModRefInfo(CS2, CS2ArgIdx);
- ModRefInfo ArgMask;
+ ModRefInfo ArgMask = MRI_NoModRef;
if (isModSet(ArgModRefCS2))
ArgMask = MRI_ModRef;
else if (isRefSet(ArgModRefCS2))