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110 lines
3.9 KiB
C++
110 lines
3.9 KiB
C++
//===- llvm/unittest/IR/ValueTest.cpp - Value 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/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/Value.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->begin()));
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EXPECT_TRUE((++F->arg_begin())->isUsedInBasicBlock(F->begin()));
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EXPECT_TRUE(F->arg_begin()->isUsedInBasicBlock(F->begin()));
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}
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TEST(GlobalTest, CreateAddressSpace) {
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LLVMContext &Ctx = getGlobalContext();
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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 = getGlobalContext();
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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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} // end anonymous namespace
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