6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
68 lines
2.5 KiB
C++
68 lines
2.5 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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#include <cstdint>
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#include <optional>
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namespace llvm {
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class AtomicMemCpyInst;
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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 ScalarEvolution;
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class TargetTransformInfo;
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class Value;
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struct Align;
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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(
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Instruction *InsertBefore, Value *SrcAddr, Value *DstAddr, Value *CopyLen,
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Align SrcAlign, Align DestAlign, bool SrcIsVolatile, bool DstIsVolatile,
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bool CanOverlap, const TargetTransformInfo &TTI,
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std::optional<unsigned> AtomicSize = std::nullopt);
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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(
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Instruction *InsertBefore, Value *SrcAddr, Value *DstAddr,
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ConstantInt *CopyLen, Align SrcAlign, Align DestAlign, bool SrcIsVolatile,
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bool DstIsVolatile, bool CanOverlap, const TargetTransformInfo &TTI,
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std::optional<uint32_t> AtomicCpySize = std::nullopt);
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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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ScalarEvolution *SE = nullptr);
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/// Expand \p MemMove as a loop. \p MemMove is not deleted. Returns true if the
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/// memmove was lowered.
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bool expandMemMoveAsLoop(MemMoveInst *MemMove, const TargetTransformInfo &TTI);
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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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/// Expand \p AtomicMemCpy as a loop. \p AtomicMemCpy is not deleted.
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void expandAtomicMemCpyAsLoop(AtomicMemCpyInst *AtomicMemCpy,
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const TargetTransformInfo &TTI,
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ScalarEvolution *SE);
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} // End llvm namespace
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#endif
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