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
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
| //===- InjectorIRStrategyTest.cpp - Tests for injector strategy -----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringRef.h"
#include "llvm/AsmParser/Parser.h"
#include "llvm/AsmParser/SlotMapping.h"
#include "llvm/FuzzMutate/IRMutator.h"
#include "llvm/FuzzMutate/Operations.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Support/SourceMgr.h"
#include "gtest/gtest.h"
using namespace llvm;
static constexpr int Seed = 5;
namespace {
std::unique_ptr<IRMutator> createInjectorMutator() {
std::vector<TypeGetter> Types{
Type::getInt1Ty, Type::getInt8Ty, Type::getInt16Ty, Type::getInt32Ty,
Type::getInt64Ty, Type::getFloatTy, Type::getDoubleTy};
std::vector<std::unique_ptr<IRMutationStrategy>> Strategies;
Strategies.push_back(
std::make_unique<InjectorIRStrategy>(
InjectorIRStrategy::getDefaultOps()));
return std::make_unique<IRMutator>(std::move(Types), std::move(Strategies));
}
std::unique_ptr<IRMutator> createDeleterMutator() {
std::vector<TypeGetter> Types{
Type::getInt1Ty, Type::getInt8Ty, Type::getInt16Ty, Type::getInt32Ty,
Type::getInt64Ty, Type::getFloatTy, Type::getDoubleTy};
std::vector<std::unique_ptr<IRMutationStrategy>> Strategies;
Strategies.push_back(std::make_unique<InstDeleterIRStrategy>());
return std::make_unique<IRMutator>(std::move(Types), std::move(Strategies));
}
std::unique_ptr<Module> parseAssembly(
const char *Assembly, LLVMContext &Context) {
SMDiagnostic Error;
std::unique_ptr<Module> M = parseAssemblyString(Assembly, Error, Context);
std::string ErrMsg;
raw_string_ostream OS(ErrMsg);
Error.print("", OS);
assert(M && !verifyModule(*M, &errs()));
return M;
}
void IterateOnSource(StringRef Source, IRMutator &Mutator) {
LLVMContext Ctx;
for (int i = 0; i < 10; ++i) {
auto M = parseAssembly(Source.data(), Ctx);
ASSERT_TRUE(M && !verifyModule(*M, &errs()));
Mutator.mutateModule(*M, Seed, Source.size(), Source.size() + 100);
EXPECT_TRUE(!verifyModule(*M, &errs()));
}
}
TEST(InjectorIRStrategyTest, EmptyModule) {
// Test that we can inject into empty module
LLVMContext Ctx;
auto M = std::make_unique<Module>("M", Ctx);
ASSERT_TRUE(M && !verifyModule(*M, &errs()));
auto Mutator = createInjectorMutator();
ASSERT_TRUE(Mutator);
Mutator->mutateModule(*M, Seed, 1, 1);
EXPECT_TRUE(!verifyModule(*M, &errs()));
}
TEST(InstDeleterIRStrategyTest, EmptyFunction) {
// Test that we don't crash even if we can't remove from one of the functions.
StringRef Source = ""
"define <8 x i32> @func1() {\n"
"ret <8 x i32> undef\n"
"}\n"
"\n"
"define i32 @func2() {\n"
"%A9 = alloca i32\n"
"%L6 = load i32, i32* %A9\n"
"ret i32 %L6\n"
"}\n";
auto Mutator = createDeleterMutator();
ASSERT_TRUE(Mutator);
IterateOnSource(Source, *Mutator);
}
TEST(InstDeleterIRStrategyTest, PhiNodes) {
// Test that inst deleter works correctly with the phi nodes.
LLVMContext Ctx;
StringRef Source = "\n\
define i32 @earlyreturncrash(i32 %x) {\n\
entry:\n\
switch i32 %x, label %sw.epilog [\n\
i32 1, label %sw.bb1\n\
]\n\
\n\
sw.bb1:\n\
br label %sw.epilog\n\
\n\
sw.epilog:\n\
%a.0 = phi i32 [ 7, %entry ], [ 9, %sw.bb1 ]\n\
%b.0 = phi i32 [ 10, %entry ], [ 4, %sw.bb1 ]\n\
ret i32 %a.0\n\
}";
auto Mutator = createDeleterMutator();
ASSERT_TRUE(Mutator);
IterateOnSource(Source, *Mutator);
}
}
|