1//===- llvm/unittest/IR/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/IR/Constants.h" 11#include "llvm/IR/DerivedTypes.h" 12#include "llvm/IR/InstrTypes.h" 13#include "llvm/IR/Instruction.h" 14#include "llvm/IR/LLVMContext.h" 15#include "llvm/IR/Module.h" 16#include "gtest/gtest.h" 17 18namespace llvm { 19namespace { 20 21TEST(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); 28 29 // Input: @b = constant i1 add(i1 1 , i1 1) 30 // Output: @b = constant i1 false 31 EXPECT_EQ(Zero, ConstantExpr::getAdd(One, One)); 32 33 // @c = constant i1 add(i1 -1, i1 1) 34 // @c = constant i1 false 35 EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, One)); 36 37 // @d = constant i1 add(i1 -1, i1 -1) 38 // @d = constant i1 false 39 EXPECT_EQ(Zero, ConstantExpr::getAdd(NegOne, NegOne)); 40 41 // @e = constant i1 sub(i1 -1, i1 1) 42 // @e = constant i1 false 43 EXPECT_EQ(Zero, ConstantExpr::getSub(NegOne, One)); 44 45 // @f = constant i1 sub(i1 1 , i1 -1) 46 // @f = constant i1 false 47 EXPECT_EQ(Zero, ConstantExpr::getSub(One, NegOne)); 48 49 // @g = constant i1 sub(i1 1 , i1 1) 50 // @g = constant i1 false 51 EXPECT_EQ(Zero, ConstantExpr::getSub(One, One)); 52 53 // @h = constant i1 shl(i1 1 , i1 1) ; undefined 54 // @h = constant i1 undef 55 EXPECT_EQ(Undef, ConstantExpr::getShl(One, One)); 56 57 // @i = constant i1 shl(i1 1 , i1 0) 58 // @i = constant i1 true 59 EXPECT_EQ(One, ConstantExpr::getShl(One, Zero)); 60 61 // @j = constant i1 lshr(i1 1, i1 1) ; undefined 62 // @j = constant i1 undef 63 EXPECT_EQ(Undef, ConstantExpr::getLShr(One, One)); 64 65 // @m = constant i1 ashr(i1 1, i1 1) ; undefined 66 // @m = constant i1 undef 67 EXPECT_EQ(Undef, ConstantExpr::getAShr(One, One)); 68 69 // @n = constant i1 mul(i1 -1, i1 1) 70 // @n = constant i1 true 71 EXPECT_EQ(One, ConstantExpr::getMul(NegOne, One)); 72 73 // @o = constant i1 sdiv(i1 -1, i1 1) ; overflow 74 // @o = constant i1 true 75 EXPECT_EQ(One, ConstantExpr::getSDiv(NegOne, One)); 76 77 // @p = constant i1 sdiv(i1 1 , i1 -1); overflow 78 // @p = constant i1 true 79 EXPECT_EQ(One, ConstantExpr::getSDiv(One, NegOne)); 80 81 // @q = constant i1 udiv(i1 -1, i1 1) 82 // @q = constant i1 true 83 EXPECT_EQ(One, ConstantExpr::getUDiv(NegOne, One)); 84 85 // @r = constant i1 udiv(i1 1, i1 -1) 86 // @r = constant i1 true 87 EXPECT_EQ(One, ConstantExpr::getUDiv(One, NegOne)); 88 89 // @s = constant i1 srem(i1 -1, i1 1) ; overflow 90 // @s = constant i1 false 91 EXPECT_EQ(Zero, ConstantExpr::getSRem(NegOne, One)); 92 93 // @t = constant i1 urem(i1 -1, i1 1) 94 // @t = constant i1 false 95 EXPECT_EQ(Zero, ConstantExpr::getURem(NegOne, One)); 96 97 // @u = constant i1 srem(i1 1, i1 -1) ; overflow 98 // @u = constant i1 false 99 EXPECT_EQ(Zero, ConstantExpr::getSRem(One, NegOne)); 100} 101 102TEST(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()); 110 111 // Overflow is handled by truncation. 112 EXPECT_EQ(0x3b, ConstantInt::get(Int8Ty, 0x13b)->getSExtValue()); 113} 114 115TEST(ConstantsTest, FP128Test) { 116 Type *FP128Ty = Type::getFP128Ty(getGlobalContext()); 117 118 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)); 122} 123 124TEST(ConstantsTest, PointerCast) { 125 LLVMContext &C(getGlobalContext()); 126 Type *Int8PtrTy = Type::getInt8PtrTy(C); 127 Type *Int32PtrTy = Type::getInt32PtrTy(C); 128 Type *Int64Ty = Type::getInt64Ty(C); 129 VectorType *Int8PtrVecTy = VectorType::get(Int8PtrTy, 4); 130 VectorType *Int32PtrVecTy = VectorType::get(Int32PtrTy, 4); 131 VectorType *Int64VecTy = VectorType::get(Int64Ty, 4); 132 133 // ptrtoint i8* to i64 134 EXPECT_EQ(Constant::getNullValue(Int64Ty), 135 ConstantExpr::getPointerCast( 136 Constant::getNullValue(Int8PtrTy), Int64Ty)); 137 138 // bitcast i8* to i32* 139 EXPECT_EQ(Constant::getNullValue(Int32PtrTy), 140 ConstantExpr::getPointerCast( 141 Constant::getNullValue(Int8PtrTy), Int32PtrTy)); 142 143 // ptrtoint <4 x i8*> to <4 x i64> 144 EXPECT_EQ(Constant::getNullValue(Int64VecTy), 145 ConstantExpr::getPointerCast( 146 Constant::getNullValue(Int8PtrVecTy), Int64VecTy)); 147 148 // bitcast <4 x i8*> to <4 x i32*> 149 EXPECT_EQ(Constant::getNullValue(Int32PtrVecTy), 150 ConstantExpr::getPointerCast( 151 Constant::getNullValue(Int8PtrVecTy), Int32PtrVecTy)); 152} 153 154#define CHECK(x, y) { \ 155 std::string __s; \ 156 raw_string_ostream __o(__s); \ 157 Instruction *__I = cast<ConstantExpr>(x)->getAsInstruction(); \ 158 __I->print(__o); \ 159 delete __I; \ 160 __o.flush(); \ 161 EXPECT_EQ(std::string(" <badref> = " y), __s); \ 162 } 163 164TEST(ConstantsTest, AsInstructionsTest) { 165 std::unique_ptr<Module> M(new Module("MyModule", getGlobalContext())); 166 167 Type *Int64Ty = Type::getInt64Ty(getGlobalContext()); 168 Type *Int32Ty = Type::getInt32Ty(getGlobalContext()); 169 Type *Int16Ty = Type::getInt16Ty(getGlobalContext()); 170 Type *Int1Ty = Type::getInt1Ty(getGlobalContext()); 171 Type *FloatTy = Type::getFloatTy(getGlobalContext()); 172 Type *DoubleTy = Type::getDoubleTy(getGlobalContext()); 173 174 Constant *Global = M->getOrInsertGlobal("dummy", 175 PointerType::getUnqual(Int32Ty)); 176 Constant *Global2 = M->getOrInsertGlobal("dummy2", 177 PointerType::getUnqual(Int32Ty)); 178 179 Constant *P0 = ConstantExpr::getPtrToInt(Global, Int32Ty); 180 Constant *P1 = ConstantExpr::getUIToFP(P0, FloatTy); 181 Constant *P2 = ConstantExpr::getUIToFP(P0, DoubleTy); 182 Constant *P3 = ConstantExpr::getTrunc(P0, Int1Ty); 183 Constant *P4 = ConstantExpr::getPtrToInt(Global2, Int32Ty); 184 Constant *P5 = ConstantExpr::getUIToFP(P4, FloatTy); 185 Constant *P6 = ConstantExpr::getBitCast(P4, VectorType::get(Int16Ty, 2)); 186 187 Constant *One = ConstantInt::get(Int32Ty, 1); 188 189 #define P0STR "ptrtoint (i32** @dummy to i32)" 190 #define P1STR "uitofp (i32 ptrtoint (i32** @dummy to i32) to float)" 191 #define P2STR "uitofp (i32 ptrtoint (i32** @dummy to i32) to double)" 192 #define P3STR "ptrtoint (i32** @dummy to i1)" 193 #define P4STR "ptrtoint (i32** @dummy2 to i32)" 194 #define P5STR "uitofp (i32 ptrtoint (i32** @dummy2 to i32) to float)" 195 #define P6STR "bitcast (i32 ptrtoint (i32** @dummy2 to i32) to <2 x i16>)" 196 197 CHECK(ConstantExpr::getNeg(P0), "sub i32 0, " P0STR); 198 CHECK(ConstantExpr::getFNeg(P1), "fsub float -0.000000e+00, " P1STR); 199 CHECK(ConstantExpr::getNot(P0), "xor i32 " P0STR ", -1"); 200 CHECK(ConstantExpr::getAdd(P0, P0), "add i32 " P0STR ", " P0STR); 201 CHECK(ConstantExpr::getAdd(P0, P0, false, true), "add nsw i32 " P0STR ", " 202 P0STR); 203 CHECK(ConstantExpr::getAdd(P0, P0, true, true), "add nuw nsw i32 " P0STR ", " 204 P0STR); 205 CHECK(ConstantExpr::getFAdd(P1, P1), "fadd float " P1STR ", " P1STR); 206 CHECK(ConstantExpr::getSub(P0, P0), "sub i32 " P0STR ", " P0STR); 207 CHECK(ConstantExpr::getFSub(P1, P1), "fsub float " P1STR ", " P1STR); 208 CHECK(ConstantExpr::getMul(P0, P0), "mul i32 " P0STR ", " P0STR); 209 CHECK(ConstantExpr::getFMul(P1, P1), "fmul float " P1STR ", " P1STR); 210 CHECK(ConstantExpr::getUDiv(P0, P0), "udiv i32 " P0STR ", " P0STR); 211 CHECK(ConstantExpr::getSDiv(P0, P0), "sdiv i32 " P0STR ", " P0STR); 212 CHECK(ConstantExpr::getFDiv(P1, P1), "fdiv float " P1STR ", " P1STR); 213 CHECK(ConstantExpr::getURem(P0, P0), "urem i32 " P0STR ", " P0STR); 214 CHECK(ConstantExpr::getSRem(P0, P0), "srem i32 " P0STR ", " P0STR); 215 CHECK(ConstantExpr::getFRem(P1, P1), "frem float " P1STR ", " P1STR); 216 CHECK(ConstantExpr::getAnd(P0, P0), "and i32 " P0STR ", " P0STR); 217 CHECK(ConstantExpr::getOr(P0, P0), "or i32 " P0STR ", " P0STR); 218 CHECK(ConstantExpr::getXor(P0, P0), "xor i32 " P0STR ", " P0STR); 219 CHECK(ConstantExpr::getShl(P0, P0), "shl i32 " P0STR ", " P0STR); 220 CHECK(ConstantExpr::getShl(P0, P0, true), "shl nuw i32 " P0STR ", " P0STR); 221 CHECK(ConstantExpr::getShl(P0, P0, false, true), "shl nsw i32 " P0STR ", " 222 P0STR); 223 CHECK(ConstantExpr::getLShr(P0, P0, false), "lshr i32 " P0STR ", " P0STR); 224 CHECK(ConstantExpr::getLShr(P0, P0, true), "lshr exact i32 " P0STR ", " P0STR); 225 CHECK(ConstantExpr::getAShr(P0, P0, false), "ashr i32 " P0STR ", " P0STR); 226 CHECK(ConstantExpr::getAShr(P0, P0, true), "ashr exact i32 " P0STR ", " P0STR); 227 228 CHECK(ConstantExpr::getSExt(P0, Int64Ty), "sext i32 " P0STR " to i64"); 229 CHECK(ConstantExpr::getZExt(P0, Int64Ty), "zext i32 " P0STR " to i64"); 230 CHECK(ConstantExpr::getFPTrunc(P2, FloatTy), "fptrunc double " P2STR 231 " to float"); 232 CHECK(ConstantExpr::getFPExtend(P1, DoubleTy), "fpext float " P1STR 233 " to double"); 234 235 CHECK(ConstantExpr::getExactUDiv(P0, P0), "udiv exact i32 " P0STR ", " P0STR); 236 237 CHECK(ConstantExpr::getSelect(P3, P0, P4), "select i1 " P3STR ", i32 " P0STR 238 ", i32 " P4STR); 239 CHECK(ConstantExpr::getICmp(CmpInst::ICMP_EQ, P0, P4), "icmp eq i32 " P0STR 240 ", " P4STR); 241 CHECK(ConstantExpr::getFCmp(CmpInst::FCMP_ULT, P1, P5), "fcmp ult float " 242 P1STR ", " P5STR); 243 244 std::vector<Constant*> V; 245 V.push_back(One); 246 // FIXME: getGetElementPtr() actually creates an inbounds ConstantGEP, 247 // not a normal one! 248 //CHECK(ConstantExpr::getGetElementPtr(Global, V, false), 249 // "getelementptr i32** @dummy, i32 1"); 250 CHECK(ConstantExpr::getInBoundsGetElementPtr(Global, V), 251 "getelementptr inbounds i32** @dummy, i32 1"); 252 253 CHECK(ConstantExpr::getExtractElement(P6, One), "extractelement <2 x i16> " 254 P6STR ", i32 1"); 255} 256 257#ifdef GTEST_HAS_DEATH_TEST 258#ifndef NDEBUG 259TEST(ConstantsTest, ReplaceWithConstantTest) { 260 std::unique_ptr<Module> M(new Module("MyModule", getGlobalContext())); 261 262 Type *Int32Ty = Type::getInt32Ty(getGlobalContext()); 263 Constant *One = ConstantInt::get(Int32Ty, 1); 264 265 Constant *Global = 266 M->getOrInsertGlobal("dummy", PointerType::getUnqual(Int32Ty)); 267 Constant *GEP = ConstantExpr::getGetElementPtr(Global, One); 268 EXPECT_DEATH(Global->replaceAllUsesWith(GEP), 269 "this->replaceAllUsesWith\\(expr\\(this\\)\\) is NOT valid!"); 270} 271 272#endif 273#endif 274 275#undef CHECK 276 277} // end anonymous namespace 278} // end namespace llvm 279