Revert r122114 (CallbackVH observing use-list changes) because it caused severe slowd...

[oota-llvm.git] / lib / Analysis / TypeBasedAliasAnalysis.cpp

diff --git a/lib/Analysis/TypeBasedAliasAnalysis.cpp b/lib/Analysis/TypeBasedAliasAnalysis.cpp
index 57a7c8f948520d02f16bd656006d7d9b9cfd9797..40e18ab2fbfa208a8e850b511a6cf6c4976c4e89 100644 (file)
--- a/lib/Analysis/TypeBasedAliasAnalysis.cpp
+++ b/lib/Analysis/TypeBasedAliasAnalysis.cpp
@@ -66,7 +66,9 @@
 #include "llvm/Support/CommandLine.h"
 using namespace llvm;
 
-// For testing purposes, enable TBAA only via a special option.
+// A handy option for disabling TBAA functionality. The same effect can also be
+// achieved by stripping the !tbaa tags from IR, but this option is sometimes
+// more convenient.
 static cl::opt<bool> EnableTBAA("enable-tbaa", cl::init(true));
 
 namespace {