llvm-6502/unittests/IR/ValueTest.cpp
Rafael Espindola 08aeb166fd Add unittest for extreme alignments.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220483 91177308-0d34-0410-b5e6-96231b3b80d8
2014-10-23 14:45:19 +00:00

110 lines
3.9 KiB
C++

//===- llvm/unittest/IR/ValueTest.cpp - Value unit tests ------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/AsmParser/Parser.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/SourceMgr.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(ValueTest, UsedInBasicBlock) {
LLVMContext C;
const char *ModuleString = "define void @f(i32 %x, i32 %y) {\n"
"bb0:\n"
" %y1 = add i32 %y, 1\n"
" %y2 = add i32 %y, 1\n"
" %y3 = add i32 %y, 1\n"
" %y4 = add i32 %y, 1\n"
" %y5 = add i32 %y, 1\n"
" %y6 = add i32 %y, 1\n"
" %y7 = add i32 %y, 1\n"
" %y8 = add i32 %x, 1\n"
" ret void\n"
"}\n";
SMDiagnostic Err;
std::unique_ptr<Module> M = parseAssemblyString(ModuleString, Err, C);
Function *F = M->getFunction("f");
EXPECT_FALSE(F->isUsedInBasicBlock(F->begin()));
EXPECT_TRUE((++F->arg_begin())->isUsedInBasicBlock(F->begin()));
EXPECT_TRUE(F->arg_begin()->isUsedInBasicBlock(F->begin()));
}
TEST(GlobalTest, CreateAddressSpace) {
LLVMContext &Ctx = getGlobalContext();
std::unique_ptr<Module> M(new Module("TestModule", Ctx));
Type *Int8Ty = Type::getInt8Ty(Ctx);
Type *Int32Ty = Type::getInt32Ty(Ctx);
GlobalVariable *Dummy0
= new GlobalVariable(*M,
Int32Ty,
true,
GlobalValue::ExternalLinkage,
Constant::getAllOnesValue(Int32Ty),
"dummy",
nullptr,
GlobalVariable::NotThreadLocal,
1);
EXPECT_TRUE(Value::MaximumAlignment == 536870912U);
Dummy0->setAlignment(536870912U);
EXPECT_EQ(Dummy0->getAlignment(), 536870912U);
// Make sure the address space isn't dropped when returning this.
Constant *Dummy1 = M->getOrInsertGlobal("dummy", Int32Ty);
EXPECT_EQ(Dummy0, Dummy1);
EXPECT_EQ(1u, Dummy1->getType()->getPointerAddressSpace());
// This one requires a bitcast, but the address space must also stay the same.
GlobalVariable *DummyCast0
= new GlobalVariable(*M,
Int32Ty,
true,
GlobalValue::ExternalLinkage,
Constant::getAllOnesValue(Int32Ty),
"dummy_cast",
nullptr,
GlobalVariable::NotThreadLocal,
1);
// Make sure the address space isn't dropped when returning this.
Constant *DummyCast1 = M->getOrInsertGlobal("dummy_cast", Int8Ty);
EXPECT_EQ(1u, DummyCast1->getType()->getPointerAddressSpace());
EXPECT_NE(DummyCast0, DummyCast1) << *DummyCast1;
}
#ifdef GTEST_HAS_DEATH_TEST
#ifndef NDEBUG
TEST(GlobalTest, AlignDeath) {
LLVMContext &Ctx = getGlobalContext();
std::unique_ptr<Module> M(new Module("TestModule", Ctx));
Type *Int32Ty = Type::getInt32Ty(Ctx);
GlobalVariable *Var =
new GlobalVariable(*M, Int32Ty, true, GlobalValue::ExternalLinkage,
Constant::getAllOnesValue(Int32Ty), "var", nullptr,
GlobalVariable::NotThreadLocal, 1);
EXPECT_DEATH(Var->setAlignment(536870913U), "Alignment is not a power of 2");
EXPECT_DEATH(Var->setAlignment(1073741824U),
"Alignment is greater than MaximumAlignment");
}
#endif
#endif
} // end anonymous namespace