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llvm-mirror/include/llvm/AutoUpgrade.h
Bill Wendling 546c7a05de Initial check in that will auto-upgrade the old EH scheme to the new EH scheme.
This upgrade suffers from the problems of the old EH scheme - i.e., that the
calls to llvm.eh.exception() and llvm.eh.selector() can wander off and get
lost. It makes a valiant effort to reclaim these little lost lambs.

This is a first draft, so it hasn't yet been hooked up to the parser.

llvm-svn: 138602
2011-08-25 23:22:40 +00:00

53 lines
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C++

//===-- llvm/AutoUpgrade.h - AutoUpgrade Helpers ----------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// 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.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_AUTOUPGRADE_H
#define LLVM_AUTOUPGRADE_H
namespace llvm {
class Module;
class GlobalVariable;
class Function;
class CallInst;
/// 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
/// 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
/// 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);
/// This function checks debug info intrinsics. If an intrinsic is invalid
/// then this function simply removes the intrinsic.
void CheckDebugInfoIntrinsics(Module *M);
/// This function upgrades the old pre-3.0 exception handling system to the
/// new one. N.B. This will be removed in 3.1.
void UpgradeExceptionHandling(Module *M);
} // End llvm namespace
#endif