From f044ed7cf9f66d41f79c201aa8a0492b748ea012 Mon Sep 17 00:00:00 2001
From: Dale Johannesen <dalej@apple.com>
Date: Sat, 17 Apr 2010 19:56:46 +0000
Subject: [PATCH] Add comment (lost when reverting and reapplying 101503).

llvm-svn: 101664
---
 include/llvm/Analysis/InlineCost.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/llvm/Analysis/InlineCost.h b/include/llvm/Analysis/InlineCost.h
index ff1f62b3b63..ab0b84524af 100644
--- a/include/llvm/Analysis/InlineCost.h
+++ b/include/llvm/Analysis/InlineCost.h
@@ -165,6 +165,8 @@ namespace llvm {
       void analyzeFunction(Function *F);
     };
 
+    // The Function* for a function can be changed (by ArgumentPromotion);
+    // the ValueMap will update itself when this happens.
     ValueMap<const Function *, FunctionInfo> CachedFunctionInfo;
 
   public: