Revert r199191, "LTO: add API to set strategy for -internalize"

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

diff --git a/include/llvm/AutoUpgrade.h b/include/llvm/AutoUpgrade.h
index e3a32b93c987de1a399bed5526d86500757546c9..c774782f19ec54504992c14728c4b4ea02f1ecb8 100644 (file)
--- a/include/llvm/AutoUpgrade.h
+++ b/include/llvm/AutoUpgrade.h
@@ -2,12 +2,12 @@
 //
 //                     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.
 //
 //===----------------------------------------------------------------------===//
 //
-//  These functions are implemented by lib/VMCore/AutoUpgrade.cpp.
+//  These functions are implemented by lib/IR/AutoUpgrade.cpp.
 //
 //===----------------------------------------------------------------------===//
 
@@ -15,24 +15,52 @@
 #define LLVM_AUTOUPGRADE_H
 
 namespace llvm {
-  class Function;
   class CallInst;
-  class BasicBlock;
+  class Constant;
+  class Function;
+  class Instruction;
+  class Module;
+  class GlobalVariable;
+  class Type;
+  class Value;
 
-  /// 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);
+  /// This is a more granular function that simply checks an intrinsic function
+  /// 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 
+  /// This is the complement to the above, replacing a specific call to an
   /// intrinsic function with a call to the specified new function.
   void UpgradeIntrinsicCall(CallInst *CI, Function *NewFn);
-  
-  /// This is an auto-upgrade hook for any old intrinsic function syntaxes 
-  /// which need to have both the function updated as well as all calls updated 
-  /// to the new function. This should only be run in a post-processing fashion 
+
+  /// This is an auto-upgrade hook for any old intrinsic function syntaxes
+  /// which need to have both the function updated as well as all calls updated
+  /// to the new function. This should only be run in a post-processing fashion
   /// so that it can update all calls to the old function.
   void UpgradeCallsToIntrinsic(Function* F);
 
+  /// This checks for global variables which should be upgraded. It returns true
+  /// if it requires upgrading.
+  bool UpgradeGlobalVariable(GlobalVariable *GV);
+
+  /// If the TBAA tag for the given instruction uses the scalar TBAA format,
+  /// we upgrade it to the struct-path aware TBAA format.
+  void UpgradeInstWithTBAATag(Instruction *I);
+
+  /// This is an auto-upgrade for bitcast between pointers with different
+  /// address spaces: the instruction is replaced by a pair ptrtoint+inttoptr.
+  Instruction *UpgradeBitCastInst(unsigned Opc, Value *V, Type *DestTy,
+                                  Instruction *&Temp);
+
+  /// This is an auto-upgrade for bitcast constant expression between pointers
+  /// with different address spaces: the instruction is replaced by a pair
+  /// ptrtoint+inttoptr.
+  Value *UpgradeBitCastExpr(unsigned Opc, Constant *C, Type *DestTy);
+
+  /// Check the debug info version number, if it is out-dated, drop the debug
+  /// info. Return true if module is modified.
+  bool UpgradeDebugInfo(Module &M);
 } // End llvm namespace
 
 #endif