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
|
//===- 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
|
