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external/llvm/unittests/IR/UserTest.cpp
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external/llvm/unittests/IR/UserTest.cpp
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//===- llvm/unittest/IR/UserTest.cpp - User unit tests --------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/User.h"
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#include "llvm/AsmParser/Parser.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/SourceMgr.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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TEST(UserTest, ValueOpIteration) {
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LLVMContext C;
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const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n"
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"entry:\n"
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" switch i32 undef, label %s0\n"
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" [ i32 1, label %s1\n"
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" i32 2, label %s2\n"
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" i32 3, label %s3\n"
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" i32 4, label %s4\n"
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" i32 5, label %s5\n"
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" i32 6, label %s6\n"
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" i32 7, label %s7\n"
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" i32 8, label %s8\n"
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" i32 9, label %s9 ]\n"
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"\n"
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"s0:\n"
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" br label %exit\n"
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"s1:\n"
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" br label %exit\n"
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"s2:\n"
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" br label %exit\n"
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"s3:\n"
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" br label %exit\n"
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"s4:\n"
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" br label %exit\n"
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"s5:\n"
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" br label %exit\n"
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"s6:\n"
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" br label %exit\n"
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"s7:\n"
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" br label %exit\n"
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"s8:\n"
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" br label %exit\n"
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"s9:\n"
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" br label %exit\n"
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"\n"
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"exit:\n"
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" %phi = phi i32 [ 0, %s0 ], [ 1, %s1 ],\n"
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" [ 2, %s2 ], [ 3, %s3 ],\n"
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" [ 4, %s4 ], [ 5, %s5 ],\n"
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" [ 6, %s6 ], [ 7, %s7 ],\n"
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" [ 8, %s8 ], [ 9, %s9 ]\n"
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" ret void\n"
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"}\n";
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SMDiagnostic Err;
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std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
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Function *F = M->getFunction("f");
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BasicBlock &ExitBB = F->back();
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PHINode &P = cast<PHINode>(ExitBB.front());
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EXPECT_TRUE(P.value_op_begin() == P.value_op_begin());
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EXPECT_FALSE(P.value_op_begin() == P.value_op_end());
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EXPECT_TRUE(P.value_op_begin() != P.value_op_end());
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EXPECT_FALSE(P.value_op_end() != P.value_op_end());
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EXPECT_TRUE(P.value_op_begin() < P.value_op_end());
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EXPECT_FALSE(P.value_op_begin() < P.value_op_begin());
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EXPECT_TRUE(P.value_op_end() > P.value_op_begin());
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EXPECT_FALSE(P.value_op_begin() > P.value_op_begin());
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EXPECT_TRUE(P.value_op_begin() <= P.value_op_begin());
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EXPECT_FALSE(P.value_op_end() <= P.value_op_begin());
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EXPECT_TRUE(P.value_op_begin() >= P.value_op_begin());
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EXPECT_FALSE(P.value_op_begin() >= P.value_op_end());
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EXPECT_EQ(10, std::distance(P.value_op_begin(), P.value_op_end()));
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// const value op iteration
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const PHINode *IP = &P;
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EXPECT_TRUE(IP->value_op_begin() == IP->value_op_begin());
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EXPECT_FALSE(IP->value_op_begin() == IP->value_op_end());
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EXPECT_TRUE(IP->value_op_begin() != IP->value_op_end());
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EXPECT_FALSE(IP->value_op_end() != IP->value_op_end());
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EXPECT_TRUE(IP->value_op_begin() < IP->value_op_end());
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EXPECT_FALSE(IP->value_op_begin() < IP->value_op_begin());
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EXPECT_TRUE(IP->value_op_end() > IP->value_op_begin());
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EXPECT_FALSE(IP->value_op_begin() > IP->value_op_begin());
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EXPECT_TRUE(IP->value_op_begin() <= IP->value_op_begin());
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EXPECT_FALSE(IP->value_op_end() <= IP->value_op_begin());
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EXPECT_TRUE(IP->value_op_begin() >= IP->value_op_begin());
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EXPECT_FALSE(IP->value_op_begin() >= IP->value_op_end());
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EXPECT_EQ(10, std::distance(IP->value_op_begin(), IP->value_op_end()));
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User::value_op_iterator I = P.value_op_begin();
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I += 3;
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EXPECT_EQ(std::next(P.value_op_begin(), 3), I);
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EXPECT_EQ(P.getOperand(3), *I);
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I++;
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EXPECT_EQ(P.getOperand(6), I[2]);
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EXPECT_EQ(P.value_op_end(), (I - 2) + 8);
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// const value op
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User::const_value_op_iterator CI = IP->value_op_begin();
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CI += 3;
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EXPECT_EQ(std::next(IP->value_op_begin(), 3), CI);
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EXPECT_EQ(IP->getOperand(3), *CI);
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CI++;
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EXPECT_EQ(IP->getOperand(6), CI[2]);
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EXPECT_EQ(IP->value_op_end(), (CI - 2) + 8);
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}
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TEST(UserTest, PersonalityUser) {
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LLVMContext Context;
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Module M("", Context);
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FunctionType *RetVoidTy = FunctionType::get(Type::getVoidTy(Context), false);
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Function *PersonalityF = Function::Create(
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RetVoidTy, GlobalValue::ExternalLinkage, "PersonalityFn", &M);
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Function *TestF =
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Function::Create(RetVoidTy, GlobalValue::ExternalLinkage, "TestFn", &M);
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// Set up the personality function
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TestF->setPersonalityFn(PersonalityF);
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auto PersonalityUsers = PersonalityF->user_begin();
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// One user and that user is the Test function
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EXPECT_EQ(*PersonalityUsers, TestF);
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EXPECT_EQ(++PersonalityUsers, PersonalityF->user_end());
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// Reset the personality function
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TestF->setPersonalityFn(nullptr);
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// No users should remain
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EXPECT_TRUE(TestF->user_empty());
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}
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} // end anonymous namespace
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