From: Dan Gohman <gohman@apple.com>
Date: Fri, 17 Jul 2009 18:56:23 +0000 (+0000)
Subject: Add a method to clear optional optimization information from a Value.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=47128fe2969b90880c5ffdbeb8c699a06bbaa9f9;p=oota-llvm.git

Add a method to clear optional optimization information from a Value.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76215 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Value.h b/include/llvm/Value.h
index 35a30a81d5e..7e7b415ffde 100644
--- a/include/llvm/Value.h
+++ b/include/llvm/Value.h
@@ -146,6 +146,12 @@ public:
   // Only use when in type resolution situations!
   void uncheckedReplaceAllUsesWith(Value *V);
 
+  /// clearOptionalData - Clear any optional optimization data from this Value.
+  /// Transformation passes must call this method whenever changing the IR
+  /// in a way that would affect the values produced by this Value, unless
+  /// it takes special care to ensure correctness in some other way.
+  void clearOptionalData() { SubclassOptionalData = 0; }
+
   //----------------------------------------------------------------------
   // Methods for handling the chain of uses of this Value.
   //