| //===- 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 with the equivalent |
| /// arguments at \p InsertBefore. |
| void createMemCpyLoop(Instruction *InsertBefore, Value *SrcAddr, Value *DstAddr, |
| Value *CopyLen, unsigned SrcAlign, unsigned DestAlign, |
| bool SrcIsVolatile, bool DstIsVolatile); |
| |
| /// 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 |