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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
251 lines
9.8 KiB
C++
251 lines
9.8 KiB
C++
//===- llvm/unittest/IR/ValueTest.cpp - Value unit tests ------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/Value.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/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/ModuleSlotTracker.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(ValueTest, UsedInBasicBlock) {
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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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"bb0:\n"
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" %y1 = add i32 %y, 1\n"
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" %y2 = add i32 %y, 1\n"
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" %y3 = add i32 %y, 1\n"
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" %y4 = add i32 %y, 1\n"
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" %y5 = add i32 %y, 1\n"
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" %y6 = add i32 %y, 1\n"
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" %y7 = add i32 %y, 1\n"
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" %y8 = add i32 %x, 1\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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EXPECT_FALSE(F->isUsedInBasicBlock(&F->front()));
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EXPECT_TRUE(std::next(F->arg_begin())->isUsedInBasicBlock(&F->front()));
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EXPECT_TRUE(F->arg_begin()->isUsedInBasicBlock(&F->front()));
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}
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TEST(GlobalTest, CreateAddressSpace) {
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LLVMContext Ctx;
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std::unique_ptr<Module> M(new Module("TestModule", Ctx));
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Type *Int8Ty = Type::getInt8Ty(Ctx);
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Type *Int32Ty = Type::getInt32Ty(Ctx);
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GlobalVariable *Dummy0
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= new GlobalVariable(*M,
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Int32Ty,
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true,
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GlobalValue::ExternalLinkage,
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Constant::getAllOnesValue(Int32Ty),
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"dummy",
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nullptr,
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GlobalVariable::NotThreadLocal,
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1);
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EXPECT_TRUE(Value::MaximumAlignment == 536870912U);
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Dummy0->setAlignment(536870912U);
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EXPECT_EQ(Dummy0->getAlignment(), 536870912U);
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// Make sure the address space isn't dropped when returning this.
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Constant *Dummy1 = M->getOrInsertGlobal("dummy", Int32Ty);
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EXPECT_EQ(Dummy0, Dummy1);
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EXPECT_EQ(1u, Dummy1->getType()->getPointerAddressSpace());
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// This one requires a bitcast, but the address space must also stay the same.
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GlobalVariable *DummyCast0
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= new GlobalVariable(*M,
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Int32Ty,
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true,
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GlobalValue::ExternalLinkage,
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Constant::getAllOnesValue(Int32Ty),
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"dummy_cast",
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nullptr,
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GlobalVariable::NotThreadLocal,
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1);
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// Make sure the address space isn't dropped when returning this.
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Constant *DummyCast1 = M->getOrInsertGlobal("dummy_cast", Int8Ty);
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EXPECT_EQ(1u, DummyCast1->getType()->getPointerAddressSpace());
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EXPECT_NE(DummyCast0, DummyCast1) << *DummyCast1;
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}
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#ifdef GTEST_HAS_DEATH_TEST
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#ifndef NDEBUG
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TEST(GlobalTest, AlignDeath) {
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LLVMContext Ctx;
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std::unique_ptr<Module> M(new Module("TestModule", Ctx));
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Type *Int32Ty = Type::getInt32Ty(Ctx);
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GlobalVariable *Var =
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new GlobalVariable(*M, Int32Ty, true, GlobalValue::ExternalLinkage,
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Constant::getAllOnesValue(Int32Ty), "var", nullptr,
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GlobalVariable::NotThreadLocal, 1);
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EXPECT_DEATH(Var->setAlignment(536870913U), "Alignment is not a power of 2");
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EXPECT_DEATH(Var->setAlignment(1073741824U),
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"Alignment is greater than MaximumAlignment");
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}
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#endif
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#endif
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TEST(ValueTest, printSlots) {
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// Check that Value::print() and Value::printAsOperand() work with and
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// without a slot tracker.
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LLVMContext C;
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const char *ModuleString = "@g0 = external global %500\n"
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"@g1 = external global %900\n"
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"\n"
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"%900 = type { i32, i32 }\n"
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"%500 = type { i32 }\n"
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"\n"
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"define void @f(i32 %x, i32 %y) {\n"
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"entry:\n"
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" %0 = add i32 %y, 1\n"
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" %1 = add i32 %y, 1\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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ASSERT_TRUE(F);
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ASSERT_FALSE(F->empty());
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BasicBlock &BB = F->getEntryBlock();
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ASSERT_EQ(3u, BB.size());
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Instruction *I0 = &*BB.begin();
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ASSERT_TRUE(I0);
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Instruction *I1 = &*++BB.begin();
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ASSERT_TRUE(I1);
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GlobalVariable *G0 = M->getGlobalVariable("g0");
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ASSERT_TRUE(G0);
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GlobalVariable *G1 = M->getGlobalVariable("g1");
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ASSERT_TRUE(G1);
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ModuleSlotTracker MST(M.get());
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#define CHECK_PRINT(INST, STR) \
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do { \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->print(OS); \
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EXPECT_EQ(STR, OS.str()); \
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} \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->print(OS, MST); \
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EXPECT_EQ(STR, OS.str()); \
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} \
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} while (false)
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CHECK_PRINT(I0, " %0 = add i32 %y, 1");
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CHECK_PRINT(I1, " %1 = add i32 %y, 1");
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#undef CHECK_PRINT
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#define CHECK_PRINT_AS_OPERAND(INST, TYPE, STR) \
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do { \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->printAsOperand(OS, TYPE); \
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EXPECT_EQ(StringRef(STR), StringRef(OS.str())); \
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} \
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{ \
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std::string S; \
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raw_string_ostream OS(S); \
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INST->printAsOperand(OS, TYPE, MST); \
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EXPECT_EQ(StringRef(STR), StringRef(OS.str())); \
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} \
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} while (false)
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CHECK_PRINT_AS_OPERAND(I0, false, "%0");
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CHECK_PRINT_AS_OPERAND(I1, false, "%1");
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CHECK_PRINT_AS_OPERAND(I0, true, "i32 %0");
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CHECK_PRINT_AS_OPERAND(I1, true, "i32 %1");
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CHECK_PRINT_AS_OPERAND(G0, true, "%0* @g0");
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CHECK_PRINT_AS_OPERAND(G1, true, "%1* @g1");
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#undef CHECK_PRINT_AS_OPERAND
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}
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TEST(ValueTest, getLocalSlots) {
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// Verify that the getLocalSlot method returns the correct slot numbers.
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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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" %0 = add i32 %y, 1\n"
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" %1 = add i32 %y, 1\n"
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" br label %2\n"
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"\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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ASSERT_TRUE(F);
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ASSERT_FALSE(F->empty());
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BasicBlock &EntryBB = F->getEntryBlock();
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ASSERT_EQ(3u, EntryBB.size());
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BasicBlock *BB2 = &*++F->begin();
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ASSERT_TRUE(BB2);
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Instruction *I0 = &*EntryBB.begin();
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ASSERT_TRUE(I0);
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Instruction *I1 = &*++EntryBB.begin();
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ASSERT_TRUE(I1);
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ModuleSlotTracker MST(M.get());
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MST.incorporateFunction(*F);
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EXPECT_EQ(MST.getLocalSlot(I0), 0);
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EXPECT_EQ(MST.getLocalSlot(I1), 1);
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EXPECT_EQ(MST.getLocalSlot(&EntryBB), -1);
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EXPECT_EQ(MST.getLocalSlot(BB2), 2);
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}
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#if defined(GTEST_HAS_DEATH_TEST) && !defined(NDEBUG)
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TEST(ValueTest, getLocalSlotDeath) {
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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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" %0 = add i32 %y, 1\n"
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" %1 = add i32 %y, 1\n"
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" br label %2\n"
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"\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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ASSERT_TRUE(F);
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ASSERT_FALSE(F->empty());
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BasicBlock *BB2 = &*++F->begin();
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ASSERT_TRUE(BB2);
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ModuleSlotTracker MST(M.get());
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EXPECT_DEATH(MST.getLocalSlot(BB2), "No function incorporated");
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}
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#endif
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} // end anonymous namespace
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