1 //===- llvm/unittest/VMCore/ConstantsTest.cpp - Constants unit tests ------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/Constants.h"
11 #include "llvm/DerivedTypes.h"
12 #include "llvm/InstrTypes.h"
13 #include "llvm/Instruction.h"
14 #include "llvm/LLVMContext.h"
15 #include "llvm/Module.h"
16 #include "gtest/gtest.h"
21 TEST(ConstantsTest, Integer_i1) {
22 IntegerType* Int1 = IntegerType::get(getGlobalContext(), 1);
23 Constant* One = ConstantInt::get(Int1, 1, true);
24 Constant* Zero = ConstantInt::get(Int1, 0);
25 Constant* NegOne = ConstantInt::get(Int1, static_cast<uint64_t>(-1), true);
26 EXPECT_EQ(NegOne, ConstantInt::getSigned(Int1, -1));
27 Constant* Undef = UndefValue::get(Int1);
29 // Input: @b = constant i1 add(i1 1 , i1 1)
30 // Output: @b = constant i1 false
31 EXPECT_EQ(Zero, ConstantExpr::getAdd(One, One));
33 // @c = constant i1 add(i1 -1, i1 1)
34 // @c = constant i1 false
35 EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, One));
37 // @d = constant i1 add(i1 -1, i1 -1)
38 // @d = constant i1 false
39 EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, NegOne));
41 // @e = constant i1 sub(i1 -1, i1 1)
42 // @e = constant i1 false
43 EXPECT_EQ(Zero, ConstantExpr::getSub(NegOne, One));
45 // @f = constant i1 sub(i1 1 , i1 -1)
46 // @f = constant i1 false
47 EXPECT_EQ(Zero, ConstantExpr::getSub(One, NegOne));
49 // @g = constant i1 sub(i1 1 , i1 1)
50 // @g = constant i1 false
51 EXPECT_EQ(Zero, ConstantExpr::getSub(One, One));
53 // @h = constant i1 shl(i1 1 , i1 1) ; undefined
54 // @h = constant i1 undef
55 EXPECT_EQ(Undef, ConstantExpr::getShl(One, One));
57 // @i = constant i1 shl(i1 1 , i1 0)
58 // @i = constant i1 true
59 EXPECT_EQ(One, ConstantExpr::getShl(One, Zero));
61 // @j = constant i1 lshr(i1 1, i1 1) ; undefined
62 // @j = constant i1 undef
63 EXPECT_EQ(Undef, ConstantExpr::getLShr(One, One));
65 // @m = constant i1 ashr(i1 1, i1 1) ; undefined
66 // @m = constant i1 undef
67 EXPECT_EQ(Undef, ConstantExpr::getAShr(One, One));
69 // @n = constant i1 mul(i1 -1, i1 1)
70 // @n = constant i1 true
71 EXPECT_EQ(One, ConstantExpr::getMul(NegOne, One));
73 // @o = constant i1 sdiv(i1 -1, i1 1) ; overflow
74 // @o = constant i1 true
75 EXPECT_EQ(One, ConstantExpr::getSDiv(NegOne, One));
77 // @p = constant i1 sdiv(i1 1 , i1 -1); overflow
78 // @p = constant i1 true
79 EXPECT_EQ(One, ConstantExpr::getSDiv(One, NegOne));
81 // @q = constant i1 udiv(i1 -1, i1 1)
82 // @q = constant i1 true
83 EXPECT_EQ(One, ConstantExpr::getUDiv(NegOne, One));
85 // @r = constant i1 udiv(i1 1, i1 -1)
86 // @r = constant i1 true
87 EXPECT_EQ(One, ConstantExpr::getUDiv(One, NegOne));
89 // @s = constant i1 srem(i1 -1, i1 1) ; overflow
90 // @s = constant i1 false
91 EXPECT_EQ(Zero, ConstantExpr::getSRem(NegOne, One));
93 // @t = constant i1 urem(i1 -1, i1 1)
94 // @t = constant i1 false
95 EXPECT_EQ(Zero, ConstantExpr::getURem(NegOne, One));
97 // @u = constant i1 srem(i1 1, i1 -1) ; overflow
98 // @u = constant i1 false
99 EXPECT_EQ(Zero, ConstantExpr::getSRem(One, NegOne));
102 TEST(ConstantsTest, IntSigns) {
103 IntegerType* Int8Ty = Type::getInt8Ty(getGlobalContext());
104 EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, false)->getSExtValue());
105 EXPECT_EQ(100, ConstantInt::get(Int8Ty, 100, true)->getSExtValue());
106 EXPECT_EQ(100, ConstantInt::getSigned(Int8Ty, 100)->getSExtValue());
107 EXPECT_EQ(-50, ConstantInt::get(Int8Ty, 206)->getSExtValue());
108 EXPECT_EQ(-50, ConstantInt::getSigned(Int8Ty, -50)->getSExtValue());
109 EXPECT_EQ(206U, ConstantInt::getSigned(Int8Ty, -50)->getZExtValue());
111 // Overflow is handled by truncation.
112 EXPECT_EQ(0x3b, ConstantInt::get(Int8Ty, 0x13b)->getSExtValue());
115 TEST(ConstantsTest, FP128Test) {
116 Type *FP128Ty = Type::getFP128Ty(getGlobalContext());
118 IntegerType *Int128Ty = Type::getIntNTy(getGlobalContext(), 128);
119 Constant *Zero128 = Constant::getNullValue(Int128Ty);
120 Constant *X = ConstantExpr::getUIToFP(Zero128, FP128Ty);
121 EXPECT_TRUE(isa<ConstantFP>(X));
124 #define CHECK(x, y) { \
126 raw_string_ostream __o(__s); \
127 cast<ConstantExpr>(x)->getAsInstruction()->print(__o); \
129 EXPECT_EQ(std::string(" <badref> = " y), __s); \
132 TEST(ConstantsTest, AsInstructionsTest) {
133 Module *M = new Module("MyModule", getGlobalContext());
135 Type *Int64Ty = Type::getInt64Ty(getGlobalContext());
136 Type *Int32Ty = Type::getInt32Ty(getGlobalContext());
137 Type *Int16Ty = Type::getInt16Ty(getGlobalContext());
138 Type *Int1Ty = Type::getInt1Ty(getGlobalContext());
139 Type *FloatTy = Type::getFloatTy(getGlobalContext());
140 Type *DoubleTy = Type::getDoubleTy(getGlobalContext());
142 Constant *Global = M->getOrInsertGlobal("dummy",
143 PointerType::getUnqual(Int32Ty));
144 Constant *Global2 = M->getOrInsertGlobal("dummy2",
145 PointerType::getUnqual(Int32Ty));
147 Constant *P0 = ConstantExpr::getPtrToInt(Global, Int32Ty);
148 Constant *P1 = ConstantExpr::getUIToFP(P0, FloatTy);
149 Constant *P2 = ConstantExpr::getUIToFP(P0, DoubleTy);
150 Constant *P3 = ConstantExpr::getTrunc(P0, Int1Ty);
151 Constant *P4 = ConstantExpr::getPtrToInt(Global2, Int32Ty);
152 Constant *P5 = ConstantExpr::getUIToFP(P4, FloatTy);
153 Constant *P6 = ConstantExpr::getBitCast(P4, VectorType::get(Int16Ty, 2));
155 Constant *One = ConstantInt::get(Int32Ty, 1);
157 #define P0STR "ptrtoint (i32** @dummy to i32)"
158 #define P1STR "uitofp (i32 ptrtoint (i32** @dummy to i32) to float)"
159 #define P2STR "uitofp (i32 ptrtoint (i32** @dummy to i32) to double)"
160 #define P3STR "ptrtoint (i32** @dummy to i1)"
161 #define P4STR "ptrtoint (i32** @dummy2 to i32)"
162 #define P5STR "uitofp (i32 ptrtoint (i32** @dummy2 to i32) to float)"
163 #define P6STR "bitcast (i32 ptrtoint (i32** @dummy2 to i32) to <2 x i16>)"
165 CHECK(ConstantExpr::getNeg(P0), "sub i32 0, " P0STR);
166 CHECK(ConstantExpr::getFNeg(P1), "fsub float -0.000000e+00, " P1STR);
167 CHECK(ConstantExpr::getNot(P0), "xor i32 " P0STR ", -1");
168 CHECK(ConstantExpr::getAdd(P0, P0), "add i32 " P0STR ", " P0STR);
169 CHECK(ConstantExpr::getAdd(P0, P0, false, true), "add nsw i32 " P0STR ", "
171 CHECK(ConstantExpr::getAdd(P0, P0, true, true), "add nuw nsw i32 " P0STR ", "
173 CHECK(ConstantExpr::getFAdd(P1, P1), "fadd float " P1STR ", " P1STR);
174 CHECK(ConstantExpr::getSub(P0, P0), "sub i32 " P0STR ", " P0STR);
175 CHECK(ConstantExpr::getFSub(P1, P1), "fsub float " P1STR ", " P1STR);
176 CHECK(ConstantExpr::getMul(P0, P0), "mul i32 " P0STR ", " P0STR);
177 CHECK(ConstantExpr::getFMul(P1, P1), "fmul float " P1STR ", " P1STR);
178 CHECK(ConstantExpr::getUDiv(P0, P0), "udiv i32 " P0STR ", " P0STR);
179 CHECK(ConstantExpr::getSDiv(P0, P0), "sdiv i32 " P0STR ", " P0STR);
180 CHECK(ConstantExpr::getFDiv(P1, P1), "fdiv float " P1STR ", " P1STR);
181 CHECK(ConstantExpr::getURem(P0, P0), "urem i32 " P0STR ", " P0STR);
182 CHECK(ConstantExpr::getSRem(P0, P0), "srem i32 " P0STR ", " P0STR);
183 CHECK(ConstantExpr::getFRem(P1, P1), "frem float " P1STR ", " P1STR);
184 CHECK(ConstantExpr::getAnd(P0, P0), "and i32 " P0STR ", " P0STR);
185 CHECK(ConstantExpr::getOr(P0, P0), "or i32 " P0STR ", " P0STR);
186 CHECK(ConstantExpr::getXor(P0, P0), "xor i32 " P0STR ", " P0STR);
187 CHECK(ConstantExpr::getShl(P0, P0), "shl i32 " P0STR ", " P0STR);
188 CHECK(ConstantExpr::getShl(P0, P0, true), "shl nuw i32 " P0STR ", " P0STR);
189 CHECK(ConstantExpr::getShl(P0, P0, false, true), "shl nsw i32 " P0STR ", "
191 CHECK(ConstantExpr::getLShr(P0, P0, false), "lshr i32 " P0STR ", " P0STR);
192 CHECK(ConstantExpr::getLShr(P0, P0, true), "lshr exact i32 " P0STR ", " P0STR);
193 CHECK(ConstantExpr::getAShr(P0, P0, false), "ashr i32 " P0STR ", " P0STR);
194 CHECK(ConstantExpr::getAShr(P0, P0, true), "ashr exact i32 " P0STR ", " P0STR);
196 CHECK(ConstantExpr::getSExt(P0, Int64Ty), "sext i32 " P0STR " to i64");
197 CHECK(ConstantExpr::getZExt(P0, Int64Ty), "zext i32 " P0STR " to i64");
198 CHECK(ConstantExpr::getFPTrunc(P2, FloatTy), "fptrunc double " P2STR
200 CHECK(ConstantExpr::getFPExtend(P1, DoubleTy), "fpext float " P1STR
203 CHECK(ConstantExpr::getExactUDiv(P0, P0), "udiv exact i32 " P0STR ", " P0STR);
205 CHECK(ConstantExpr::getSelect(P3, P0, P4), "select i1 " P3STR ", i32 " P0STR
207 CHECK(ConstantExpr::getICmp(CmpInst::ICMP_EQ, P0, P4), "icmp eq i32 " P0STR
209 CHECK(ConstantExpr::getFCmp(CmpInst::FCMP_ULT, P1, P5), "fcmp ult float "
212 std::vector<Constant*> V;
214 // FIXME: getGetElementPtr() actually creates an inbounds ConstantGEP,
216 //CHECK(ConstantExpr::getGetElementPtr(Global, V, false),
217 // "getelementptr i32** @dummy, i32 1");
218 CHECK(ConstantExpr::getInBoundsGetElementPtr(Global, V),
219 "getelementptr inbounds i32** @dummy, i32 1");
221 CHECK(ConstantExpr::getExtractElement(P6, One), "extractelement <2 x i16> "
227 } // end anonymous namespace
228 } // end namespace llvm