Make a SmallVector size more reasonable.

llvm-svn: 79403
diff --git a/llvm/lib/VMCore/Value.cpp b/llvm/lib/VMCore/Value.cpp
index ba75d6e..157245d 100644
--- a/llvm/lib/VMCore/Value.cpp
+++ b/llvm/lib/VMCore/Value.cpp
@@ -171,7 +171,7 @@
 }
 
 void Value::setName(const Twine &NewName) {
-  SmallString<32> NameData;
+  SmallString<256> NameData;
   NewName.toVector(NameData);
 
   const char *NameStr = NameData.data();