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
78
79
80
81
82
83
84
85
86
87
88
89
90
|
//===- MemoryLocation.cpp - Memory location descriptions -------------------==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/MemoryLocation.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
using namespace llvm;
MemoryLocation MemoryLocation::get(const LoadInst *LI) {
AAMDNodes AATags;
LI->getAAMetadata(AATags);
const auto &DL = LI->getModule()->getDataLayout();
return MemoryLocation(LI->getPointerOperand(),
DL.getTypeStoreSize(LI->getType()), AATags);
}
MemoryLocation MemoryLocation::get(const StoreInst *SI) {
AAMDNodes AATags;
SI->getAAMetadata(AATags);
const auto &DL = SI->getModule()->getDataLayout();
return MemoryLocation(SI->getPointerOperand(),
DL.getTypeStoreSize(SI->getValueOperand()->getType()),
AATags);
}
MemoryLocation MemoryLocation::get(const VAArgInst *VI) {
AAMDNodes AATags;
VI->getAAMetadata(AATags);
return MemoryLocation(VI->getPointerOperand(), UnknownSize, AATags);
}
MemoryLocation MemoryLocation::get(const AtomicCmpXchgInst *CXI) {
AAMDNodes AATags;
CXI->getAAMetadata(AATags);
const auto &DL = CXI->getModule()->getDataLayout();
return MemoryLocation(
CXI->getPointerOperand(),
DL.getTypeStoreSize(CXI->getCompareOperand()->getType()), AATags);
}
MemoryLocation MemoryLocation::get(const AtomicRMWInst *RMWI) {
AAMDNodes AATags;
RMWI->getAAMetadata(AATags);
const auto &DL = RMWI->getModule()->getDataLayout();
return MemoryLocation(RMWI->getPointerOperand(),
DL.getTypeStoreSize(RMWI->getValOperand()->getType()),
AATags);
}
MemoryLocation MemoryLocation::getForSource(const MemTransferInst *MTI) {
uint64_t Size = UnknownSize;
if (ConstantInt *C = dyn_cast<ConstantInt>(MTI->getLength()))
Size = C->getValue().getZExtValue();
// memcpy/memmove can have AA tags. For memcpy, they apply
// to both the source and the destination.
AAMDNodes AATags;
MTI->getAAMetadata(AATags);
return MemoryLocation(MTI->getRawSource(), Size, AATags);
}
MemoryLocation MemoryLocation::getForDest(const MemIntrinsic *MTI) {
uint64_t Size = UnknownSize;
if (ConstantInt *C = dyn_cast<ConstantInt>(MTI->getLength()))
Size = C->getValue().getZExtValue();
// memcpy/memmove can have AA tags. For memcpy, they apply
// to both the source and the destination.
AAMDNodes AATags;
MTI->getAAMetadata(AATags);
return MemoryLocation(MTI->getRawDest(), Size, AATags);
}
|
