//===- llvm/Transforms/Utils/LowerMemintrinsics.h ---------------*- C++ -*-===// // // The LLVM Compiler Infrastructure // // This file is distributed under the University of Illinois Open Source // License. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // // Lower memset, memcpy, memmov intrinsics to loops (e.g. for targets without // library support). // //===----------------------------------------------------------------------===// #ifndef LLVM_TRANSFORMS_UTILS_LOWERMEMINTRINSICS_H #define LLVM_TRANSFORMS_UTILS_LOWERMEMINTRINSICS_H namespace llvm { class ConstantInt; class Instruction; class MemCpyInst; class MemMoveInst; class MemSetInst; class TargetTransformInfo; class Value; /// Emit a loop implementing the semantics of llvm.memcpy where the size is not /// a compile-time constant. Loop will be insterted at \p InsertBefore. void createMemCpyLoopUnknownSize(Instruction *InsertBefore, Value *SrcAddr, Value *DstAddr, Value *CopyLen, unsigned SrcAlign, unsigned DestAlign, bool SrcIsVolatile, bool DstIsVolatile, const TargetTransformInfo &TTI); /// Emit a loop implementing the semantics of an llvm.memcpy whose size is a /// compile time constant. Loop is inserted at \p InsertBefore. void createMemCpyLoopKnownSize(Instruction *InsertBefore, Value *SrcAddr, Value *DstAddr, ConstantInt *CopyLen, unsigned SrcAlign, unsigned DestAlign, bool SrcIsVolatile, bool DstIsVolatile, const TargetTransformInfo &TTI); /// Expand \p MemCpy as a loop. \p MemCpy is not deleted. void expandMemCpyAsLoop(MemCpyInst *MemCpy, const TargetTransformInfo &TTI); /// Expand \p MemMove as a loop. \p MemMove is not deleted. void expandMemMoveAsLoop(MemMoveInst *MemMove); /// Expand \p MemSet as a loop. \p MemSet is not deleted. void expandMemSetAsLoop(MemSetInst *MemSet); } // End llvm namespace #endif |