1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- llvm/Transforms/Utils/LowerMemIntrinsics.h ---------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// 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
#include <cstdint>
#include <optional>
namespace llvm {
class AtomicMemCpyInst;
class ConstantInt;
class Instruction;
class MemCpyInst;
class MemMoveInst;
class MemSetInst;
class ScalarEvolution;
class TargetTransformInfo;
class Value;
struct Align;
/// 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,
Align SrcAlign, Align DestAlign, bool SrcIsVolatile, bool DstIsVolatile,
bool CanOverlap, const TargetTransformInfo &TTI,
std::optional<unsigned> AtomicSize = std::nullopt);
/// 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, Align SrcAlign, Align DestAlign, bool SrcIsVolatile,
bool DstIsVolatile, bool CanOverlap, const TargetTransformInfo &TTI,
std::optional<uint32_t> AtomicCpySize = std::nullopt);
/// Expand \p MemCpy as a loop. \p MemCpy is not deleted.
void expandMemCpyAsLoop(MemCpyInst *MemCpy, const TargetTransformInfo &TTI,
ScalarEvolution *SE = nullptr);
/// 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);
/// Expand \p AtomicMemCpy as a loop. \p AtomicMemCpy is not deleted.
void expandAtomicMemCpyAsLoop(AtomicMemCpyInst *AtomicMemCpy,
const TargetTransformInfo &TTI,
ScalarEvolution *SE);
} // End llvm namespace
#endif
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
