1 //===- llvm/unittest/VMCore/ConstantsTest.cpp - Constants unit tests ------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/Constants.h"
11 #include "llvm/DerivedTypes.h"
12 #include "llvm/LLVMContext.h"
13 #include "gtest/gtest.h"
14
15 namespace llvm {
16 namespace {
17
TEST(ConstantsTest,Integer_i1)18 TEST(ConstantsTest, Integer_i1) {
19 IntegerType* Int1 = IntegerType::get(getGlobalContext(), 1);
20 Constant* One = ConstantInt::get(Int1, 1, true);
21 Constant* Zero = ConstantInt::get(Int1, 0);
22 Constant* NegOne = ConstantInt::get(Int1, static_cast<uint64_t>(-1), true);
23 EXPECT_EQ(NegOne, ConstantInt::getSigned(Int1, -1));
24 Constant* Undef = UndefValue::get(Int1);
25
26 // Input: @b = constant i1 add(i1 1 , i1 1)
27 // Output: @b = constant i1 false
28 EXPECT_EQ(Zero, ConstantExpr::getAdd(One, One));
29
30 // @c = constant i1 add(i1 -1, i1 1)
31 // @c = constant i1 false
32 EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, One));
33
34 // @d = constant i1 add(i1 -1, i1 -1)
35 // @d = constant i1 false
36 EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, NegOne));
37
38 // @e = constant i1 sub(i1 -1, i1 1)
39 // @e = constant i1 false
40 EXPECT_EQ(Zero, ConstantExpr::getSub(NegOne, One));
41
42 // @f = constant i1 sub(i1 1 , i1 -1)
43 // @f = constant i1 false
44 EXPECT_EQ(Zero, ConstantExpr::getSub(One, NegOne));
45
46 // @g = constant i1 sub(i1 1 , i1 1)
47 // @g = constant i1 false
48 EXPECT_EQ(Zero, ConstantExpr::getSub(One, One));
49
50 // @h = constant i1 shl(i1 1 , i1 1) ; undefined
51 // @h = constant i1 undef
52 EXPECT_EQ(Undef, ConstantExpr::getShl(One, One));
53
54 // @i = constant i1 shl(i1 1 , i1 0)
55 // @i = constant i1 true
56 EXPECT_EQ(One, ConstantExpr::getShl(One, Zero));
57
58 // @j = constant i1 lshr(i1 1, i1 1) ; undefined
59 // @j = constant i1 undef
60 EXPECT_EQ(Undef, ConstantExpr::getLShr(One, One));
61
62 // @m = constant i1 ashr(i1 1, i1 1) ; undefined
63 // @m = constant i1 undef
64 EXPECT_EQ(Undef, ConstantExpr::getAShr(One, One));
65
66 // @n = constant i1 mul(i1 -1, i1 1)
67 // @n = constant i1 true
68 EXPECT_EQ(One, ConstantExpr::getMul(NegOne, One));
69
70 // @o = constant i1 sdiv(i1 -1, i1 1) ; overflow
71 // @o = constant i1 true
72 EXPECT_EQ(One, ConstantExpr::getSDiv(NegOne, One));
73
74 // @p = constant i1 sdiv(i1 1 , i1 -1); overflow
75 // @p = constant i1 true
76 EXPECT_EQ(One, ConstantExpr::getSDiv(One, NegOne));
77
78 // @q = constant i1 udiv(i1 -1, i1 1)
79 // @q = constant i1 true
80 EXPECT_EQ(One, ConstantExpr::getUDiv(NegOne, One));
81
82 // @r = constant i1 udiv(i1 1, i1 -1)
83 // @r = constant i1 true
84 EXPECT_EQ(One, ConstantExpr::getUDiv(One, NegOne));
85
86 // @s = constant i1 srem(i1 -1, i1 1) ; overflow
87 // @s = constant i1 false
88 EXPECT_EQ(Zero, ConstantExpr::getSRem(NegOne, One));
89
90 // @t = constant i1 urem(i1 -1, i1 1)
91 // @t = constant i1 false
92 EXPECT_EQ(Zero, ConstantExpr::getURem(NegOne, One));
93
94 // @u = constant i1 srem(i1 1, i1 -1) ; overflow
95 // @u = constant i1 false
96 EXPECT_EQ(Zero, ConstantExpr::getSRem(One, NegOne));
97 }
98
TEST(ConstantsTest,IntSigns)99 TEST(ConstantsTest, IntSigns) {
100 IntegerType* Int8Ty = Type::getInt8Ty(getGlobalContext());
101 EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, false)->getSExtValue());
102 EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, true)->getSExtValue());
103 EXPECT_EQ(100, ConstantInt::getSigned(Int8Ty, 100)->getSExtValue());
104 EXPECT_EQ(-50, ConstantInt::get(Int8Ty, 206)->getSExtValue());
105 EXPECT_EQ(-50, ConstantInt::getSigned(Int8Ty, -50)->getSExtValue());
106 EXPECT_EQ(206U, ConstantInt::getSigned(Int8Ty, -50)->getZExtValue());
107
108 // Overflow is handled by truncation.
109 EXPECT_EQ(0x3b, ConstantInt::get(Int8Ty, 0x13b)->getSExtValue());
110 }
111
TEST(ConstantsTest,FP128Test)112 TEST(ConstantsTest, FP128Test) {
113 Type *FP128Ty = Type::getFP128Ty(getGlobalContext());
114
115 IntegerType *Int128Ty = Type::getIntNTy(getGlobalContext(), 128);
116 Constant *Zero128 = Constant::getNullValue(Int128Ty);
117 Constant *X = ConstantExpr::getUIToFP(Zero128, FP128Ty);
118 EXPECT_TRUE(isa<ConstantFP>(X));
119 }
120
121 } // end anonymous namespace
122 } // end namespace llvm
123