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llvm-mirror/unittests/IR/ValueMapTest.cpp
Mehdi Amini ea195a382e Remove every uses of getGlobalContext() in LLVM (but the C API)
At the same time, fixes InstructionsTest::CastInst unittest: yes
you can leave the IR in an invalid state and exit when you don't
destroy the context (like the global one), no longer now.

This is the first part of http://reviews.llvm.org/D19094

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 266379
2016-04-14 21:59:01 +00:00

296 lines
9.6 KiB
C++

//===- llvm/unittest/ADT/ValueMapTest.cpp - ValueMap unit tests -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/IR/ValueMap.h"
#include "llvm/Config/llvm-config.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
// Test fixture
template<typename T>
class ValueMapTest : public testing::Test {
protected:
LLVMContext Context;
Constant *ConstantV;
std::unique_ptr<BitCastInst> BitcastV;
std::unique_ptr<BinaryOperator> AddV;
ValueMapTest()
: ConstantV(ConstantInt::get(Type::getInt32Ty(Context), 0)),
BitcastV(new BitCastInst(ConstantV, Type::getInt32Ty(Context))),
AddV(BinaryOperator::CreateAdd(ConstantV, ConstantV)) {}
};
// Run everything on Value*, a subtype to make sure that casting works as
// expected, and a const subtype to make sure we cast const correctly.
typedef ::testing::Types<Value, Instruction, const Instruction> KeyTypes;
TYPED_TEST_CASE(ValueMapTest, KeyTypes);
TYPED_TEST(ValueMapTest, Null) {
ValueMap<TypeParam*, int> VM1;
VM1[nullptr] = 7;
EXPECT_EQ(7, VM1.lookup(nullptr));
}
TYPED_TEST(ValueMapTest, FollowsValue) {
ValueMap<TypeParam*, int> VM;
VM[this->BitcastV.get()] = 7;
EXPECT_EQ(7, VM.lookup(this->BitcastV.get()));
EXPECT_EQ(0u, VM.count(this->AddV.get()));
this->BitcastV->replaceAllUsesWith(this->AddV.get());
EXPECT_EQ(7, VM.lookup(this->AddV.get()));
EXPECT_EQ(0u, VM.count(this->BitcastV.get()));
this->AddV.reset();
EXPECT_EQ(0u, VM.count(this->AddV.get()));
EXPECT_EQ(0u, VM.count(this->BitcastV.get()));
EXPECT_EQ(0U, VM.size());
}
TYPED_TEST(ValueMapTest, OperationsWork) {
ValueMap<TypeParam*, int> VM;
ValueMap<TypeParam*, int> VM2(16); (void)VM2;
typename ValueMapConfig<TypeParam*>::ExtraData Data;
ValueMap<TypeParam*, int> VM3(Data, 16); (void)VM3;
EXPECT_TRUE(VM.empty());
VM[this->BitcastV.get()] = 7;
// Find:
typename ValueMap<TypeParam*, int>::iterator I =
VM.find(this->BitcastV.get());
ASSERT_TRUE(I != VM.end());
EXPECT_EQ(this->BitcastV.get(), I->first);
EXPECT_EQ(7, I->second);
EXPECT_TRUE(VM.find(this->AddV.get()) == VM.end());
// Const find:
const ValueMap<TypeParam*, int> &CVM = VM;
typename ValueMap<TypeParam*, int>::const_iterator CI =
CVM.find(this->BitcastV.get());
ASSERT_TRUE(CI != CVM.end());
EXPECT_EQ(this->BitcastV.get(), CI->first);
EXPECT_EQ(7, CI->second);
EXPECT_TRUE(CVM.find(this->AddV.get()) == CVM.end());
// Insert:
std::pair<typename ValueMap<TypeParam*, int>::iterator, bool> InsertResult1 =
VM.insert(std::make_pair(this->AddV.get(), 3));
EXPECT_EQ(this->AddV.get(), InsertResult1.first->first);
EXPECT_EQ(3, InsertResult1.first->second);
EXPECT_TRUE(InsertResult1.second);
EXPECT_EQ(1u, VM.count(this->AddV.get()));
std::pair<typename ValueMap<TypeParam*, int>::iterator, bool> InsertResult2 =
VM.insert(std::make_pair(this->AddV.get(), 5));
EXPECT_EQ(this->AddV.get(), InsertResult2.first->first);
EXPECT_EQ(3, InsertResult2.first->second);
EXPECT_FALSE(InsertResult2.second);
// Erase:
VM.erase(InsertResult2.first);
EXPECT_EQ(0U, VM.count(this->AddV.get()));
EXPECT_EQ(1U, VM.count(this->BitcastV.get()));
VM.erase(this->BitcastV.get());
EXPECT_EQ(0U, VM.count(this->BitcastV.get()));
EXPECT_EQ(0U, VM.size());
// Range insert:
SmallVector<std::pair<Instruction*, int>, 2> Elems;
Elems.push_back(std::make_pair(this->AddV.get(), 1));
Elems.push_back(std::make_pair(this->BitcastV.get(), 2));
VM.insert(Elems.begin(), Elems.end());
EXPECT_EQ(1, VM.lookup(this->AddV.get()));
EXPECT_EQ(2, VM.lookup(this->BitcastV.get()));
}
template<typename ExpectedType, typename VarType>
void CompileAssertHasType(VarType) {
static_assert(std::is_same<ExpectedType, VarType>::value,
"Not the same type");
}
TYPED_TEST(ValueMapTest, Iteration) {
ValueMap<TypeParam*, int> VM;
VM[this->BitcastV.get()] = 2;
VM[this->AddV.get()] = 3;
size_t size = 0;
for (typename ValueMap<TypeParam*, int>::iterator I = VM.begin(), E = VM.end();
I != E; ++I) {
++size;
std::pair<TypeParam*, int> value = *I; (void)value;
CompileAssertHasType<TypeParam*>(I->first);
if (I->second == 2) {
EXPECT_EQ(this->BitcastV.get(), I->first);
I->second = 5;
} else if (I->second == 3) {
EXPECT_EQ(this->AddV.get(), I->first);
I->second = 6;
} else {
ADD_FAILURE() << "Iterated through an extra value.";
}
}
EXPECT_EQ(2U, size);
EXPECT_EQ(5, VM[this->BitcastV.get()]);
EXPECT_EQ(6, VM[this->AddV.get()]);
size = 0;
// Cast to const ValueMap to avoid a bug in DenseMap's iterators.
const ValueMap<TypeParam*, int>& CVM = VM;
for (typename ValueMap<TypeParam*, int>::const_iterator I = CVM.begin(),
E = CVM.end(); I != E; ++I) {
++size;
std::pair<TypeParam*, int> value = *I; (void)value;
CompileAssertHasType<TypeParam*>(I->first);
if (I->second == 5) {
EXPECT_EQ(this->BitcastV.get(), I->first);
} else if (I->second == 6) {
EXPECT_EQ(this->AddV.get(), I->first);
} else {
ADD_FAILURE() << "Iterated through an extra value.";
}
}
EXPECT_EQ(2U, size);
}
TYPED_TEST(ValueMapTest, DefaultCollisionBehavior) {
// By default, we overwrite the old value with the replaced value.
ValueMap<TypeParam*, int> VM;
VM[this->BitcastV.get()] = 7;
VM[this->AddV.get()] = 9;
this->BitcastV->replaceAllUsesWith(this->AddV.get());
EXPECT_EQ(0u, VM.count(this->BitcastV.get()));
EXPECT_EQ(9, VM.lookup(this->AddV.get()));
}
TYPED_TEST(ValueMapTest, ConfiguredCollisionBehavior) {
// TODO: Implement this when someone needs it.
}
template<typename KeyT, typename MutexT>
struct LockMutex : ValueMapConfig<KeyT, MutexT> {
struct ExtraData {
MutexT *M;
bool *CalledRAUW;
bool *CalledDeleted;
};
static void onRAUW(const ExtraData &Data, KeyT Old, KeyT New) {
*Data.CalledRAUW = true;
EXPECT_FALSE(Data.M->try_lock()) << "Mutex should already be locked.";
}
static void onDelete(const ExtraData &Data, KeyT Old) {
*Data.CalledDeleted = true;
EXPECT_FALSE(Data.M->try_lock()) << "Mutex should already be locked.";
}
static MutexT *getMutex(const ExtraData &Data) { return Data.M; }
};
// FIXME: These tests started failing on Windows.
#if LLVM_ENABLE_THREADS && !defined(LLVM_ON_WIN32)
TYPED_TEST(ValueMapTest, LocksMutex) {
sys::Mutex M(false); // Not recursive.
bool CalledRAUW = false, CalledDeleted = false;
typedef LockMutex<TypeParam*, sys::Mutex> ConfigType;
typename ConfigType::ExtraData Data = {&M, &CalledRAUW, &CalledDeleted};
ValueMap<TypeParam*, int, ConfigType> VM(Data);
VM[this->BitcastV.get()] = 7;
this->BitcastV->replaceAllUsesWith(this->AddV.get());
this->AddV.reset();
EXPECT_TRUE(CalledRAUW);
EXPECT_TRUE(CalledDeleted);
}
#endif
template<typename KeyT>
struct NoFollow : ValueMapConfig<KeyT> {
enum { FollowRAUW = false };
};
TYPED_TEST(ValueMapTest, NoFollowRAUW) {
ValueMap<TypeParam*, int, NoFollow<TypeParam*> > VM;
VM[this->BitcastV.get()] = 7;
EXPECT_EQ(7, VM.lookup(this->BitcastV.get()));
EXPECT_EQ(0u, VM.count(this->AddV.get()));
this->BitcastV->replaceAllUsesWith(this->AddV.get());
EXPECT_EQ(7, VM.lookup(this->BitcastV.get()));
EXPECT_EQ(0, VM.lookup(this->AddV.get()));
this->AddV.reset();
EXPECT_EQ(7, VM.lookup(this->BitcastV.get()));
EXPECT_EQ(0, VM.lookup(this->AddV.get()));
this->BitcastV.reset();
EXPECT_EQ(0, VM.lookup(this->BitcastV.get()));
EXPECT_EQ(0, VM.lookup(this->AddV.get()));
EXPECT_EQ(0U, VM.size());
}
template<typename KeyT>
struct CountOps : ValueMapConfig<KeyT> {
struct ExtraData {
int *Deletions;
int *RAUWs;
};
static void onRAUW(const ExtraData &Data, KeyT Old, KeyT New) {
++*Data.RAUWs;
}
static void onDelete(const ExtraData &Data, KeyT Old) {
++*Data.Deletions;
}
};
TYPED_TEST(ValueMapTest, CallsConfig) {
int Deletions = 0, RAUWs = 0;
typename CountOps<TypeParam*>::ExtraData Data = {&Deletions, &RAUWs};
ValueMap<TypeParam*, int, CountOps<TypeParam*> > VM(Data);
VM[this->BitcastV.get()] = 7;
this->BitcastV->replaceAllUsesWith(this->AddV.get());
EXPECT_EQ(0, Deletions);
EXPECT_EQ(1, RAUWs);
this->AddV.reset();
EXPECT_EQ(1, Deletions);
EXPECT_EQ(1, RAUWs);
this->BitcastV.reset();
EXPECT_EQ(1, Deletions);
EXPECT_EQ(1, RAUWs);
}
template<typename KeyT>
struct ModifyingConfig : ValueMapConfig<KeyT> {
// We'll put a pointer here back to the ValueMap this key is in, so
// that we can modify it (and clobber *this) before the ValueMap
// tries to do the same modification. In previous versions of
// ValueMap, that exploded.
typedef ValueMap<KeyT, int, ModifyingConfig<KeyT> > **ExtraData;
static void onRAUW(ExtraData Map, KeyT Old, KeyT New) {
(*Map)->erase(Old);
}
static void onDelete(ExtraData Map, KeyT Old) {
(*Map)->erase(Old);
}
};
TYPED_TEST(ValueMapTest, SurvivesModificationByConfig) {
ValueMap<TypeParam*, int, ModifyingConfig<TypeParam*> > *MapAddress;
ValueMap<TypeParam*, int, ModifyingConfig<TypeParam*> > VM(&MapAddress);
MapAddress = &VM;
// Now the ModifyingConfig can modify the Map inside a callback.
VM[this->BitcastV.get()] = 7;
this->BitcastV->replaceAllUsesWith(this->AddV.get());
EXPECT_EQ(0u, VM.count(this->BitcastV.get()));
EXPECT_EQ(0u, VM.count(this->AddV.get()));
VM[this->AddV.get()] = 7;
this->AddV.reset();
EXPECT_EQ(0u, VM.count(this->AddV.get()));
}
} // end namespace