Simplify RegScavenger::forward a bit more.

[oota-llvm.git] / include / llvm / AutoUpgrade.h

diff --git a/include/llvm/AutoUpgrade.h b/include/llvm/AutoUpgrade.h
index e3a32b93c987de1a399bed5526d86500757546c9..f61bd1a08d32bf3e90018bd5c3d70c011768013a 100644 (file)
--- a/include/llvm/AutoUpgrade.h
+++ b/include/llvm/AutoUpgrade.h
@@ -2,8 +2,8 @@
 //
 //                     The LLVM Compiler Infrastructure
 //
-// This file was developed by Chandler Carruth is distributed under the 
-// University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 //
@@ -17,11 +17,12 @@
 namespace llvm {
   class Function;
   class CallInst;
-  class BasicBlock;
 
   /// This is a more granular function that simply checks an intrinsic function 
-  /// for upgrading, and if it requires upgrading provides the new function.
-  Function* UpgradeIntrinsicFunction(Function *F);
+  /// for upgrading, and returns true if it requires upgrading. It may return
+  /// null in NewFn if the all calls to the original intrinsic function
+  /// should be transformed to non-function-call instructions.
+  bool UpgradeIntrinsicFunction(Function *F, Function *&NewFn);
 
   /// This is the complement to the above, replacing a specific call to an 
   /// intrinsic function with a call to the specified new function.