1 //===- llvm/unittest/IR/UserTest.cpp - User 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/AsmParser/Parser.h" 11 #include "llvm/IR/Function.h" 12 #include "llvm/IR/Instructions.h" 13 #include "llvm/IR/LLVMContext.h" 14 #include "llvm/IR/Module.h" 15 #include "llvm/IR/User.h" 16 #include "llvm/Support/SourceMgr.h" 17 #include "gtest/gtest.h" 18 using namespace llvm; 19 20 namespace { 21 TEST(UserTest,ValueOpIteration)22 TEST(UserTest, ValueOpIteration) { 23 LLVMContext C; 24 25 const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n" 26 "entry:\n" 27 " switch i32 undef, label %s0\n" 28 " [ i32 1, label %s1\n" 29 " i32 2, label %s2\n" 30 " i32 3, label %s3\n" 31 " i32 4, label %s4\n" 32 " i32 5, label %s5\n" 33 " i32 6, label %s6\n" 34 " i32 7, label %s7\n" 35 " i32 8, label %s8\n" 36 " i32 9, label %s9 ]\n" 37 "\n" 38 "s0:\n" 39 " br label %exit\n" 40 "s1:\n" 41 " br label %exit\n" 42 "s2:\n" 43 " br label %exit\n" 44 "s3:\n" 45 " br label %exit\n" 46 "s4:\n" 47 " br label %exit\n" 48 "s5:\n" 49 " br label %exit\n" 50 "s6:\n" 51 " br label %exit\n" 52 "s7:\n" 53 " br label %exit\n" 54 "s8:\n" 55 " br label %exit\n" 56 "s9:\n" 57 " br label %exit\n" 58 "\n" 59 "exit:\n" 60 " %phi = phi i32 [ 0, %s0 ], [ 1, %s1 ],\n" 61 " [ 2, %s2 ], [ 3, %s3 ],\n" 62 " [ 4, %s4 ], [ 5, %s5 ],\n" 63 " [ 6, %s6 ], [ 7, %s7 ],\n" 64 " [ 8, %s8 ], [ 9, %s9 ]\n" 65 " ret void\n" 66 "}\n"; 67 SMDiagnostic Err; 68 std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C); 69 70 Function *F = M->getFunction("f"); 71 BasicBlock &ExitBB = F->back(); 72 PHINode &P = cast<PHINode>(ExitBB.front()); 73 EXPECT_TRUE(P.value_op_begin() == P.value_op_begin()); 74 EXPECT_FALSE(P.value_op_begin() == P.value_op_end()); 75 EXPECT_TRUE(P.value_op_begin() != P.value_op_end()); 76 EXPECT_FALSE(P.value_op_end() != P.value_op_end()); 77 EXPECT_TRUE(P.value_op_begin() < P.value_op_end()); 78 EXPECT_FALSE(P.value_op_begin() < P.value_op_begin()); 79 EXPECT_TRUE(P.value_op_end() > P.value_op_begin()); 80 EXPECT_FALSE(P.value_op_begin() > P.value_op_begin()); 81 EXPECT_TRUE(P.value_op_begin() <= P.value_op_begin()); 82 EXPECT_FALSE(P.value_op_end() <= P.value_op_begin()); 83 EXPECT_TRUE(P.value_op_begin() >= P.value_op_begin()); 84 EXPECT_FALSE(P.value_op_begin() >= P.value_op_end()); 85 EXPECT_EQ(10, std::distance(P.value_op_begin(), P.value_op_end())); 86 87 User::value_op_iterator I = P.value_op_begin(); 88 I += 3; 89 EXPECT_EQ(std::next(P.value_op_begin(), 3), I); 90 EXPECT_EQ(P.getOperand(3), *I); 91 I++; 92 EXPECT_EQ(P.getOperand(6), I[2]); 93 EXPECT_EQ(P.value_op_end(), (I - 2) + 8); 94 } 95 TEST(UserTest,PersonalityUser)96 TEST(UserTest, PersonalityUser) { 97 LLVMContext Context; 98 Module M("", Context); 99 FunctionType *RetVoidTy = FunctionType::get(Type::getVoidTy(Context), false); 100 Function *PersonalityF = Function::Create( 101 RetVoidTy, GlobalValue::ExternalLinkage, "PersonalityFn", &M); 102 Function *TestF = 103 Function::Create(RetVoidTy, GlobalValue::ExternalLinkage, "TestFn", &M); 104 105 // Set up the personality function 106 TestF->setPersonalityFn(PersonalityF); 107 auto PersonalityUsers = PersonalityF->user_begin(); 108 109 // One user and that user is the Test function 110 EXPECT_EQ(*PersonalityUsers, TestF); 111 EXPECT_EQ(++PersonalityUsers, PersonalityF->user_end()); 112 113 // Reset the personality function 114 TestF->setPersonalityFn(nullptr); 115 116 // No users should remain 117 EXPECT_TRUE(TestF->user_empty()); 118 } 119 120 } // end anonymous namespace 121