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56 lines
2.1 KiB
C++
56 lines
2.1 KiB
C++
//===- llvm/Transforms/Utils/LowerMemIntrinsics.h ---------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Lower memset, memcpy, memmov intrinsics to loops (e.g. for targets without
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// library support).
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_TRANSFORMS_UTILS_LOWERMEMINTRINSICS_H
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#define LLVM_TRANSFORMS_UTILS_LOWERMEMINTRINSICS_H
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namespace llvm {
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class ConstantInt;
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class Instruction;
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class MemCpyInst;
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class MemMoveInst;
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class MemSetInst;
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class TargetTransformInfo;
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class Value;
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/// Emit a loop implementing the semantics of llvm.memcpy where the size is not
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/// a compile-time constant. Loop will be insterted at \p InsertBefore.
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void createMemCpyLoopUnknownSize(Instruction *InsertBefore, Value *SrcAddr,
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Value *DstAddr, Value *CopyLen,
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unsigned SrcAlign, unsigned DestAlign,
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bool SrcIsVolatile, bool DstIsVolatile,
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const TargetTransformInfo &TTI);
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/// Emit a loop implementing the semantics of an llvm.memcpy whose size is a
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/// compile time constant. Loop is inserted at \p InsertBefore.
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void createMemCpyLoopKnownSize(Instruction *InsertBefore, Value *SrcAddr,
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Value *DstAddr, ConstantInt *CopyLen,
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unsigned SrcAlign, unsigned DestAlign,
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bool SrcIsVolatile, bool DstIsVolatile,
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const TargetTransformInfo &TTI);
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/// Expand \p MemCpy as a loop. \p MemCpy is not deleted.
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void expandMemCpyAsLoop(MemCpyInst *MemCpy, const TargetTransformInfo &TTI);
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/// Expand \p MemMove as a loop. \p MemMove is not deleted.
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void expandMemMoveAsLoop(MemMoveInst *MemMove);
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/// Expand \p MemSet as a loop. \p MemSet is not deleted.
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void expandMemSetAsLoop(MemSetInst *MemSet);
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} // End llvm namespace
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#endif
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