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llvm-mirror/include/llvm/Assembly/AutoUpgrade.h
Reid Spencer c2e3662a89 1. Documentation upgrade.
2. Have UpgradeInstrinicCall return an Instruction* instead of a CallInst*
   and return the needed CastInst* if the result of the upgraded call needs
   to be casted back to a signed type.

llvm-svn: 25446
2006-01-19 06:59:26 +00:00

67 lines
3.1 KiB
C++

//===-- llvm/Assembly/AutoUpgrade.h - AutoUpgrade Helpers --------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Reid Spencer is distributed under the University
// of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// These functions are implemented by the lib/VMCore/AutoUpgrade.cpp.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_ASSEMBLY_AUTOUPGRADE_H
#define LLVM_ASSEMBLY_AUTOUPGRADE_H
#include <string>
namespace llvm {
class Function;
class CallInst;
class Instruction;
/// This function determines if the \p Name provides is a name for which the
/// auto-upgrade to a non-overloaded name applies.
/// @returns True if the function name is upgradeable, false otherwise.
/// @brief Determine if a name is an upgradeable intrinsic name.
bool IsUpgradeableIntrinsicName(const std::string& Name);
/// This function inspects the Function \p F to see if it is an old overloaded
/// intrinsic. If it is, the Function's name is changed to add a suffix that
/// indicates the kind of arguments or result that it accepts. In LLVM release
/// 1.7, the overloading of intrinsic functions was replaced with separate
/// functions for each of the various argument sizes. This function implements
/// the auto-upgrade feature from the old overloaded names to the new
/// non-overloaded names.
/// @param F The Function to potentially auto-upgrade.
/// @returns A corrected version of F, or 0 if no change necessary
/// @brief Remove overloaded intrinsic function names.
Function* UpgradeIntrinsicFunction(Function* F);
/// In LLVM 1.7, the overloading of intrinsic functions was replaced with
/// separate functions for each of the various argument sizes. This function
/// implements the auto-upgrade feature from old overloaded names to the new
/// non-overloaded names. This function inspects the CallInst \p CI to see
/// if it is a call to an old overloaded intrinsic. If it is, a new CallInst
/// is created that uses the correct Function and possibly casts the
/// argument and result to an unsigned type. The caller can use the
/// returned Instruction to replace the existing one. Note that the
/// Instruction* returned could be a CallInst or a CastInst depending on
/// whether casting was necessary.
/// @param CI The CallInst to potentially auto-upgrade.
/// @returns An instrution to replace \p CI with.
/// @brief Get replacement instruction for overloaded intrinsic function call.
Instruction* UpgradeIntrinsicCall(CallInst* CI);
/// Upgrade both the function and all the calls made to it, if that function
/// needs to be upgraded. This is like a combination of the above two
/// functions, UpgradeIntrinsicFunction and UpgradeIntrinsicCall. Note that
/// the calls are replaced so this should only be used in a post-processing
/// manner (i.e. after all assembly/bytecode has been read).
bool UpgradeCallsToIntrinsic(Function* F);
} // End llvm namespace
#endif