forked from llvm-mirror/llvm
-
Notifications
You must be signed in to change notification settings - Fork 0
/
ValueLatticeTest.cpp
148 lines (127 loc) · 6.09 KB
/
ValueLatticeTest.cpp
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
139
140
141
142
143
144
145
146
147
148
//===- ValueLatticeTest.cpp - ScalarEvolution unit tests --------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/Analysis/ValueLattice.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/IR/ConstantRange.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "gtest/gtest.h"
namespace llvm {
namespace {
// We use this fixture to ensure that we clean up ScalarEvolution before
// deleting the PassManager.
class ValueLatticeTest : public testing::Test {
protected:
LLVMContext Context;
Module M;
ValueLatticeTest() : M("", Context) {}
};
TEST_F(ValueLatticeTest, ValueLatticeGetters) {
auto I32Ty = IntegerType::get(Context, 32);
auto *C1 = ConstantInt::get(I32Ty, 1);
EXPECT_TRUE(ValueLatticeElement::get(C1).isConstantRange());
EXPECT_TRUE(
ValueLatticeElement::getRange({C1->getValue()}).isConstantRange());
EXPECT_TRUE(ValueLatticeElement::getOverdefined().isOverdefined());
auto FloatTy = Type::getFloatTy(Context);
auto *C2 = ConstantFP::get(FloatTy, 1.1);
EXPECT_TRUE(ValueLatticeElement::get(C2).isConstant());
EXPECT_TRUE(ValueLatticeElement::getNot(C2).isNotConstant());
}
TEST_F(ValueLatticeTest, MergeIn) {
auto I32Ty = IntegerType::get(Context, 32);
auto *C1 = ConstantInt::get(I32Ty, 1);
// Merge to lattice values with equal integer constant.
auto LV1 = ValueLatticeElement::get(C1);
LV1.mergeIn(ValueLatticeElement::get(C1), M.getDataLayout());
EXPECT_TRUE(LV1.isConstantRange());
EXPECT_EQ(LV1.asConstantInteger().getValue().getLimitedValue(), 1U);
// Merge LV1 with different integer constant.
LV1.mergeIn(ValueLatticeElement::get(ConstantInt::get(I32Ty, 99)),
M.getDataLayout());
EXPECT_TRUE(LV1.isConstantRange());
EXPECT_EQ(LV1.getConstantRange().getLower().getLimitedValue(), 1U);
EXPECT_EQ(LV1.getConstantRange().getUpper().getLimitedValue(), 100U);
// Merge LV1 in undefined value.
ValueLatticeElement LV2;
LV2.mergeIn(LV1, M.getDataLayout());
EXPECT_TRUE(LV1.isConstantRange());
EXPECT_EQ(LV1.getConstantRange().getLower().getLimitedValue(), 1U);
EXPECT_EQ(LV1.getConstantRange().getUpper().getLimitedValue(), 100U);
EXPECT_TRUE(LV2.isConstantRange());
EXPECT_EQ(LV2.getConstantRange().getLower().getLimitedValue(), 1U);
EXPECT_EQ(LV2.getConstantRange().getUpper().getLimitedValue(), 100U);
// Merge with overdefined.
LV1.mergeIn(ValueLatticeElement::getOverdefined(), M.getDataLayout());
EXPECT_TRUE(LV1.isOverdefined());
}
TEST_F(ValueLatticeTest, satisfiesPredicateIntegers) {
auto I32Ty = IntegerType::get(Context, 32);
auto *C1 = ConstantInt::get(I32Ty, 1);
auto LV1 = ValueLatticeElement::get(C1);
// Check satisfiesPredicate for equal integer constants.
EXPECT_TRUE(LV1.satisfiesPredicate(CmpInst::ICMP_EQ, LV1));
EXPECT_TRUE(LV1.satisfiesPredicate(CmpInst::ICMP_SGE, LV1));
EXPECT_TRUE(LV1.satisfiesPredicate(CmpInst::ICMP_SLE, LV1));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::ICMP_NE, LV1));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::ICMP_SLT, LV1));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::ICMP_SGT, LV1));
auto LV2 =
ValueLatticeElement::getRange({APInt(32, 10, true), APInt(32, 20, true)});
// Check satisfiesPredicate with distinct integer ranges.
EXPECT_TRUE(LV1.satisfiesPredicate(CmpInst::ICMP_SLT, LV2));
EXPECT_TRUE(LV1.satisfiesPredicate(CmpInst::ICMP_SLE, LV2));
EXPECT_TRUE(LV1.satisfiesPredicate(CmpInst::ICMP_NE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::ICMP_EQ, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::ICMP_SGE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::ICMP_SGT, LV2));
auto LV3 =
ValueLatticeElement::getRange({APInt(32, 15, true), APInt(32, 19, true)});
// Check satisfiesPredicate with a subset integer ranges.
EXPECT_FALSE(LV2.satisfiesPredicate(CmpInst::ICMP_SLT, LV3));
EXPECT_FALSE(LV2.satisfiesPredicate(CmpInst::ICMP_SLE, LV3));
EXPECT_FALSE(LV2.satisfiesPredicate(CmpInst::ICMP_NE, LV3));
EXPECT_FALSE(LV2.satisfiesPredicate(CmpInst::ICMP_EQ, LV3));
EXPECT_FALSE(LV2.satisfiesPredicate(CmpInst::ICMP_SGE, LV3));
EXPECT_FALSE(LV2.satisfiesPredicate(CmpInst::ICMP_SGT, LV3));
auto LV4 =
ValueLatticeElement::getRange({APInt(32, 15, true), APInt(32, 25, true)});
// Check satisfiesPredicate with overlapping integer ranges.
EXPECT_FALSE(LV3.satisfiesPredicate(CmpInst::ICMP_SLT, LV4));
EXPECT_FALSE(LV3.satisfiesPredicate(CmpInst::ICMP_SLE, LV4));
EXPECT_FALSE(LV3.satisfiesPredicate(CmpInst::ICMP_NE, LV4));
EXPECT_FALSE(LV3.satisfiesPredicate(CmpInst::ICMP_EQ, LV4));
EXPECT_FALSE(LV3.satisfiesPredicate(CmpInst::ICMP_SGE, LV4));
EXPECT_FALSE(LV3.satisfiesPredicate(CmpInst::ICMP_SGT, LV4));
}
TEST_F(ValueLatticeTest, satisfiesPredicateFloat) {
auto FloatTy = IntegerType::getFloatTy(Context);
auto *C1 = ConstantFP::get(FloatTy, 1.0);
auto LV1 = ValueLatticeElement::get(C1);
auto LV2 = ValueLatticeElement::get(C1);
// Check satisfiesPredicate for equal floating point constants.
EXPECT_TRUE(LV1.satisfiesPredicate(CmpInst::FCMP_OEQ, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OGE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OLE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_ONE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OLT, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OGT, LV2));
LV1.mergeIn(ValueLatticeElement::get(ConstantFP::get(FloatTy, 2.2)),
M.getDataLayout());
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OEQ, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OGE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OLE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_ONE, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OLT, LV2));
EXPECT_FALSE(LV1.satisfiesPredicate(CmpInst::FCMP_OGT, LV2));
}
} // end anonymous namespace
} // end namespace llvm