1 //===- llvm/unittest/IR/WaymarkTest.cpp - getUser() 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 // we perform white-box tests 11 // 12 #include "llvm/IR/Constants.h" 13 #include "llvm/IR/Function.h" 14 #include "llvm/IR/Instructions.h" 15 #include "llvm/IR/LLVMContext.h" 16 #include "gtest/gtest.h" 17 #include <algorithm> 18 19 namespace llvm { 20 namespace { 21 22 Constant *char2constant(char c) { 23 return ConstantInt::get(Type::getInt8Ty(getGlobalContext()), c); 24 } 25 26 27 TEST(WaymarkTest, NativeArray) { 28 static uint8_t tail[22] = "s02s33s30y2y0s1x0syxS"; 29 Value * values[22]; 30 std::transform(tail, tail + 22, values, char2constant); 31 FunctionType *FT = FunctionType::get(Type::getVoidTy(getGlobalContext()), true); 32 std::unique_ptr<Function> F( 33 Function::Create(FT, GlobalValue::ExternalLinkage)); 34 const CallInst *A = CallInst::Create(F.get(), makeArrayRef(values)); 35 ASSERT_NE(A, (const CallInst*)nullptr); 36 ASSERT_EQ(1U + 22, A->getNumOperands()); 37 const Use *U = &A->getOperandUse(0); 38 const Use *Ue = &A->getOperandUse(22); 39 for (; U != Ue; ++U) 40 { 41 EXPECT_EQ(A, U->getUser()); 42 } 43 delete A; 44 } 45 46 TEST(WaymarkTest, TwoBit) { 47 Use* many = (Use*)calloc(sizeof(Use), 8212 + 1); 48 ASSERT_TRUE(many); 49 Use::initTags(many, many + 8212); 50 for (Use *U = many, *Ue = many + 8212 - 1; U != Ue; ++U) 51 { 52 EXPECT_EQ(reinterpret_cast<User *>(Ue + 1), U->getUser()); 53 } 54 free(many); 55 } 56 57 } // end anonymous namespace 58 } // end namespace llvm 59
