mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 03:33:20 +01:00
ea195a382e
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
416 lines
12 KiB
C++
416 lines
12 KiB
C++
//===- ValueHandleTest.cpp - ValueHandle tests ----------------------------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/IR/ValueHandle.h"
|
|
#include "llvm/IR/Constants.h"
|
|
#include "llvm/IR/Instructions.h"
|
|
#include "llvm/IR/LLVMContext.h"
|
|
#include "gtest/gtest.h"
|
|
#include <memory>
|
|
|
|
using namespace llvm;
|
|
|
|
namespace {
|
|
|
|
class ValueHandle : public testing::Test {
|
|
protected:
|
|
LLVMContext Context;
|
|
Constant *ConstantV;
|
|
std::unique_ptr<BitCastInst> BitcastV;
|
|
|
|
ValueHandle()
|
|
: ConstantV(ConstantInt::get(Type::getInt32Ty(Context), 0)),
|
|
BitcastV(new BitCastInst(ConstantV, Type::getInt32Ty(Context))) {}
|
|
};
|
|
|
|
class ConcreteCallbackVH final : public CallbackVH {
|
|
public:
|
|
ConcreteCallbackVH(Value *V) : CallbackVH(V) {}
|
|
};
|
|
|
|
TEST_F(ValueHandle, WeakVH_BasicOperation) {
|
|
WeakVH WVH(BitcastV.get());
|
|
EXPECT_EQ(BitcastV.get(), WVH);
|
|
WVH = ConstantV;
|
|
EXPECT_EQ(ConstantV, WVH);
|
|
|
|
// Make sure I can call a method on the underlying Value. It
|
|
// doesn't matter which method.
|
|
EXPECT_EQ(Type::getInt32Ty(Context), WVH->getType());
|
|
EXPECT_EQ(Type::getInt32Ty(Context), (*WVH).getType());
|
|
}
|
|
|
|
TEST_F(ValueHandle, WeakVH_Comparisons) {
|
|
WeakVH BitcastWVH(BitcastV.get());
|
|
WeakVH ConstantWVH(ConstantV);
|
|
|
|
EXPECT_TRUE(BitcastWVH == BitcastWVH);
|
|
EXPECT_TRUE(BitcastV.get() == BitcastWVH);
|
|
EXPECT_TRUE(BitcastWVH == BitcastV.get());
|
|
EXPECT_FALSE(BitcastWVH == ConstantWVH);
|
|
|
|
EXPECT_TRUE(BitcastWVH != ConstantWVH);
|
|
EXPECT_TRUE(BitcastV.get() != ConstantWVH);
|
|
EXPECT_TRUE(BitcastWVH != ConstantV);
|
|
EXPECT_FALSE(BitcastWVH != BitcastWVH);
|
|
|
|
// Cast to Value* so comparisons work.
|
|
Value *BV = BitcastV.get();
|
|
Value *CV = ConstantV;
|
|
EXPECT_EQ(BV < CV, BitcastWVH < ConstantWVH);
|
|
EXPECT_EQ(BV <= CV, BitcastWVH <= ConstantWVH);
|
|
EXPECT_EQ(BV > CV, BitcastWVH > ConstantWVH);
|
|
EXPECT_EQ(BV >= CV, BitcastWVH >= ConstantWVH);
|
|
|
|
EXPECT_EQ(BV < CV, BitcastV.get() < ConstantWVH);
|
|
EXPECT_EQ(BV <= CV, BitcastV.get() <= ConstantWVH);
|
|
EXPECT_EQ(BV > CV, BitcastV.get() > ConstantWVH);
|
|
EXPECT_EQ(BV >= CV, BitcastV.get() >= ConstantWVH);
|
|
|
|
EXPECT_EQ(BV < CV, BitcastWVH < ConstantV);
|
|
EXPECT_EQ(BV <= CV, BitcastWVH <= ConstantV);
|
|
EXPECT_EQ(BV > CV, BitcastWVH > ConstantV);
|
|
EXPECT_EQ(BV >= CV, BitcastWVH >= ConstantV);
|
|
}
|
|
|
|
TEST_F(ValueHandle, WeakVH_FollowsRAUW) {
|
|
WeakVH WVH(BitcastV.get());
|
|
WeakVH WVH_Copy(WVH);
|
|
WeakVH WVH_Recreated(BitcastV.get());
|
|
BitcastV->replaceAllUsesWith(ConstantV);
|
|
EXPECT_EQ(ConstantV, WVH);
|
|
EXPECT_EQ(ConstantV, WVH_Copy);
|
|
EXPECT_EQ(ConstantV, WVH_Recreated);
|
|
}
|
|
|
|
TEST_F(ValueHandle, WeakVH_NullOnDeletion) {
|
|
WeakVH WVH(BitcastV.get());
|
|
WeakVH WVH_Copy(WVH);
|
|
WeakVH WVH_Recreated(BitcastV.get());
|
|
BitcastV.reset();
|
|
Value *null_value = nullptr;
|
|
EXPECT_EQ(null_value, WVH);
|
|
EXPECT_EQ(null_value, WVH_Copy);
|
|
EXPECT_EQ(null_value, WVH_Recreated);
|
|
}
|
|
|
|
|
|
TEST_F(ValueHandle, AssertingVH_BasicOperation) {
|
|
AssertingVH<CastInst> AVH(BitcastV.get());
|
|
CastInst *implicit_to_exact_type = AVH;
|
|
(void)implicit_to_exact_type; // Avoid warning.
|
|
|
|
AssertingVH<Value> GenericAVH(BitcastV.get());
|
|
EXPECT_EQ(BitcastV.get(), GenericAVH);
|
|
GenericAVH = ConstantV;
|
|
EXPECT_EQ(ConstantV, GenericAVH);
|
|
|
|
// Make sure I can call a method on the underlying CastInst. It
|
|
// doesn't matter which method.
|
|
EXPECT_FALSE(AVH->mayWriteToMemory());
|
|
EXPECT_FALSE((*AVH).mayWriteToMemory());
|
|
}
|
|
|
|
TEST_F(ValueHandle, AssertingVH_Const) {
|
|
const CastInst *ConstBitcast = BitcastV.get();
|
|
AssertingVH<const CastInst> AVH(ConstBitcast);
|
|
const CastInst *implicit_to_exact_type = AVH;
|
|
(void)implicit_to_exact_type; // Avoid warning.
|
|
}
|
|
|
|
TEST_F(ValueHandle, AssertingVH_Comparisons) {
|
|
AssertingVH<Value> BitcastAVH(BitcastV.get());
|
|
AssertingVH<Value> ConstantAVH(ConstantV);
|
|
|
|
EXPECT_TRUE(BitcastAVH == BitcastAVH);
|
|
EXPECT_TRUE(BitcastV.get() == BitcastAVH);
|
|
EXPECT_TRUE(BitcastAVH == BitcastV.get());
|
|
EXPECT_FALSE(BitcastAVH == ConstantAVH);
|
|
|
|
EXPECT_TRUE(BitcastAVH != ConstantAVH);
|
|
EXPECT_TRUE(BitcastV.get() != ConstantAVH);
|
|
EXPECT_TRUE(BitcastAVH != ConstantV);
|
|
EXPECT_FALSE(BitcastAVH != BitcastAVH);
|
|
|
|
// Cast to Value* so comparisons work.
|
|
Value *BV = BitcastV.get();
|
|
Value *CV = ConstantV;
|
|
EXPECT_EQ(BV < CV, BitcastAVH < ConstantAVH);
|
|
EXPECT_EQ(BV <= CV, BitcastAVH <= ConstantAVH);
|
|
EXPECT_EQ(BV > CV, BitcastAVH > ConstantAVH);
|
|
EXPECT_EQ(BV >= CV, BitcastAVH >= ConstantAVH);
|
|
|
|
EXPECT_EQ(BV < CV, BitcastV.get() < ConstantAVH);
|
|
EXPECT_EQ(BV <= CV, BitcastV.get() <= ConstantAVH);
|
|
EXPECT_EQ(BV > CV, BitcastV.get() > ConstantAVH);
|
|
EXPECT_EQ(BV >= CV, BitcastV.get() >= ConstantAVH);
|
|
|
|
EXPECT_EQ(BV < CV, BitcastAVH < ConstantV);
|
|
EXPECT_EQ(BV <= CV, BitcastAVH <= ConstantV);
|
|
EXPECT_EQ(BV > CV, BitcastAVH > ConstantV);
|
|
EXPECT_EQ(BV >= CV, BitcastAVH >= ConstantV);
|
|
}
|
|
|
|
TEST_F(ValueHandle, AssertingVH_DoesNotFollowRAUW) {
|
|
AssertingVH<Value> AVH(BitcastV.get());
|
|
BitcastV->replaceAllUsesWith(ConstantV);
|
|
EXPECT_EQ(BitcastV.get(), AVH);
|
|
}
|
|
|
|
#ifdef NDEBUG
|
|
|
|
TEST_F(ValueHandle, AssertingVH_ReducesToPointer) {
|
|
EXPECT_EQ(sizeof(CastInst *), sizeof(AssertingVH<CastInst>));
|
|
}
|
|
|
|
#else // !NDEBUG
|
|
|
|
#ifdef GTEST_HAS_DEATH_TEST
|
|
|
|
TEST_F(ValueHandle, AssertingVH_Asserts) {
|
|
AssertingVH<Value> AVH(BitcastV.get());
|
|
EXPECT_DEATH({BitcastV.reset();},
|
|
"An asserting value handle still pointed to this value!");
|
|
AssertingVH<Value> Copy(AVH);
|
|
AVH = nullptr;
|
|
EXPECT_DEATH({BitcastV.reset();},
|
|
"An asserting value handle still pointed to this value!");
|
|
Copy = nullptr;
|
|
BitcastV.reset();
|
|
}
|
|
|
|
#endif // GTEST_HAS_DEATH_TEST
|
|
|
|
#endif // NDEBUG
|
|
|
|
TEST_F(ValueHandle, CallbackVH_BasicOperation) {
|
|
ConcreteCallbackVH CVH(BitcastV.get());
|
|
EXPECT_EQ(BitcastV.get(), CVH);
|
|
CVH = ConstantV;
|
|
EXPECT_EQ(ConstantV, CVH);
|
|
|
|
// Make sure I can call a method on the underlying Value. It
|
|
// doesn't matter which method.
|
|
EXPECT_EQ(Type::getInt32Ty(Context), CVH->getType());
|
|
EXPECT_EQ(Type::getInt32Ty(Context), (*CVH).getType());
|
|
}
|
|
|
|
TEST_F(ValueHandle, CallbackVH_Comparisons) {
|
|
ConcreteCallbackVH BitcastCVH(BitcastV.get());
|
|
ConcreteCallbackVH ConstantCVH(ConstantV);
|
|
|
|
EXPECT_TRUE(BitcastCVH == BitcastCVH);
|
|
EXPECT_TRUE(BitcastV.get() == BitcastCVH);
|
|
EXPECT_TRUE(BitcastCVH == BitcastV.get());
|
|
EXPECT_FALSE(BitcastCVH == ConstantCVH);
|
|
|
|
EXPECT_TRUE(BitcastCVH != ConstantCVH);
|
|
EXPECT_TRUE(BitcastV.get() != ConstantCVH);
|
|
EXPECT_TRUE(BitcastCVH != ConstantV);
|
|
EXPECT_FALSE(BitcastCVH != BitcastCVH);
|
|
|
|
// Cast to Value* so comparisons work.
|
|
Value *BV = BitcastV.get();
|
|
Value *CV = ConstantV;
|
|
EXPECT_EQ(BV < CV, BitcastCVH < ConstantCVH);
|
|
EXPECT_EQ(BV <= CV, BitcastCVH <= ConstantCVH);
|
|
EXPECT_EQ(BV > CV, BitcastCVH > ConstantCVH);
|
|
EXPECT_EQ(BV >= CV, BitcastCVH >= ConstantCVH);
|
|
|
|
EXPECT_EQ(BV < CV, BitcastV.get() < ConstantCVH);
|
|
EXPECT_EQ(BV <= CV, BitcastV.get() <= ConstantCVH);
|
|
EXPECT_EQ(BV > CV, BitcastV.get() > ConstantCVH);
|
|
EXPECT_EQ(BV >= CV, BitcastV.get() >= ConstantCVH);
|
|
|
|
EXPECT_EQ(BV < CV, BitcastCVH < ConstantV);
|
|
EXPECT_EQ(BV <= CV, BitcastCVH <= ConstantV);
|
|
EXPECT_EQ(BV > CV, BitcastCVH > ConstantV);
|
|
EXPECT_EQ(BV >= CV, BitcastCVH >= ConstantV);
|
|
}
|
|
|
|
TEST_F(ValueHandle, CallbackVH_CallbackOnDeletion) {
|
|
class RecordingVH final : public CallbackVH {
|
|
public:
|
|
int DeletedCalls;
|
|
int AURWCalls;
|
|
|
|
RecordingVH() : DeletedCalls(0), AURWCalls(0) {}
|
|
RecordingVH(Value *V) : CallbackVH(V), DeletedCalls(0), AURWCalls(0) {}
|
|
|
|
private:
|
|
void deleted() override {
|
|
DeletedCalls++;
|
|
CallbackVH::deleted();
|
|
}
|
|
void allUsesReplacedWith(Value *) override { AURWCalls++; }
|
|
};
|
|
|
|
RecordingVH RVH;
|
|
RVH = BitcastV.get();
|
|
EXPECT_EQ(0, RVH.DeletedCalls);
|
|
EXPECT_EQ(0, RVH.AURWCalls);
|
|
BitcastV.reset();
|
|
EXPECT_EQ(1, RVH.DeletedCalls);
|
|
EXPECT_EQ(0, RVH.AURWCalls);
|
|
}
|
|
|
|
TEST_F(ValueHandle, CallbackVH_CallbackOnRAUW) {
|
|
class RecordingVH final : public CallbackVH {
|
|
public:
|
|
int DeletedCalls;
|
|
Value *AURWArgument;
|
|
|
|
RecordingVH() : DeletedCalls(0), AURWArgument(nullptr) {}
|
|
RecordingVH(Value *V)
|
|
: CallbackVH(V), DeletedCalls(0), AURWArgument(nullptr) {}
|
|
|
|
private:
|
|
void deleted() override {
|
|
DeletedCalls++;
|
|
CallbackVH::deleted();
|
|
}
|
|
void allUsesReplacedWith(Value *new_value) override {
|
|
EXPECT_EQ(nullptr, AURWArgument);
|
|
AURWArgument = new_value;
|
|
}
|
|
};
|
|
|
|
RecordingVH RVH;
|
|
RVH = BitcastV.get();
|
|
EXPECT_EQ(0, RVH.DeletedCalls);
|
|
EXPECT_EQ(nullptr, RVH.AURWArgument);
|
|
BitcastV->replaceAllUsesWith(ConstantV);
|
|
EXPECT_EQ(0, RVH.DeletedCalls);
|
|
EXPECT_EQ(ConstantV, RVH.AURWArgument);
|
|
}
|
|
|
|
TEST_F(ValueHandle, CallbackVH_DeletionCanRAUW) {
|
|
class RecoveringVH final : public CallbackVH {
|
|
public:
|
|
int DeletedCalls;
|
|
Value *AURWArgument;
|
|
LLVMContext *Context;
|
|
|
|
RecoveringVH(LLVMContext &TheContext)
|
|
: DeletedCalls(0), AURWArgument(nullptr), Context(&TheContext) {}
|
|
|
|
RecoveringVH(LLVMContext &TheContext, Value *V)
|
|
: CallbackVH(V), DeletedCalls(0), AURWArgument(nullptr),
|
|
Context(&TheContext) {}
|
|
|
|
private:
|
|
void deleted() override {
|
|
getValPtr()->replaceAllUsesWith(
|
|
Constant::getNullValue(Type::getInt32Ty(*Context)));
|
|
setValPtr(nullptr);
|
|
}
|
|
void allUsesReplacedWith(Value *new_value) override {
|
|
ASSERT_TRUE(nullptr != getValPtr());
|
|
EXPECT_EQ(1U, getValPtr()->getNumUses());
|
|
EXPECT_EQ(nullptr, AURWArgument);
|
|
AURWArgument = new_value;
|
|
}
|
|
};
|
|
|
|
// Normally, if a value has uses, deleting it will crash. However, we can use
|
|
// a CallbackVH to remove the uses before the check for no uses.
|
|
RecoveringVH RVH(Context);
|
|
RVH = RecoveringVH(Context, BitcastV.get());
|
|
std::unique_ptr<BinaryOperator> BitcastUser(BinaryOperator::CreateAdd(
|
|
RVH, Constant::getNullValue(Type::getInt32Ty(Context))));
|
|
EXPECT_EQ(BitcastV.get(), BitcastUser->getOperand(0));
|
|
BitcastV.reset(); // Would crash without the ValueHandler.
|
|
EXPECT_EQ(Constant::getNullValue(Type::getInt32Ty(Context)),
|
|
RVH.AURWArgument);
|
|
EXPECT_EQ(Constant::getNullValue(Type::getInt32Ty(Context)),
|
|
BitcastUser->getOperand(0));
|
|
}
|
|
|
|
TEST_F(ValueHandle, DestroyingOtherVHOnSameValueDoesntBreakIteration) {
|
|
// When a CallbackVH modifies other ValueHandles in its callbacks,
|
|
// that shouldn't interfere with non-modified ValueHandles receiving
|
|
// their appropriate callbacks.
|
|
//
|
|
// We create the active CallbackVH in the middle of a palindromic
|
|
// arrangement of other VHs so that the bad behavior would be
|
|
// triggered in whichever order callbacks run.
|
|
|
|
class DestroyingVH final : public CallbackVH {
|
|
public:
|
|
std::unique_ptr<WeakVH> ToClear[2];
|
|
DestroyingVH(Value *V) {
|
|
ToClear[0].reset(new WeakVH(V));
|
|
setValPtr(V);
|
|
ToClear[1].reset(new WeakVH(V));
|
|
}
|
|
void deleted() override {
|
|
ToClear[0].reset();
|
|
ToClear[1].reset();
|
|
CallbackVH::deleted();
|
|
}
|
|
void allUsesReplacedWith(Value *) override {
|
|
ToClear[0].reset();
|
|
ToClear[1].reset();
|
|
}
|
|
};
|
|
|
|
{
|
|
WeakVH ShouldBeVisited1(BitcastV.get());
|
|
DestroyingVH C(BitcastV.get());
|
|
WeakVH ShouldBeVisited2(BitcastV.get());
|
|
|
|
BitcastV->replaceAllUsesWith(ConstantV);
|
|
EXPECT_EQ(ConstantV, static_cast<Value*>(ShouldBeVisited1));
|
|
EXPECT_EQ(ConstantV, static_cast<Value*>(ShouldBeVisited2));
|
|
}
|
|
|
|
{
|
|
WeakVH ShouldBeVisited1(BitcastV.get());
|
|
DestroyingVH C(BitcastV.get());
|
|
WeakVH ShouldBeVisited2(BitcastV.get());
|
|
|
|
BitcastV.reset();
|
|
EXPECT_EQ(nullptr, static_cast<Value*>(ShouldBeVisited1));
|
|
EXPECT_EQ(nullptr, static_cast<Value*>(ShouldBeVisited2));
|
|
}
|
|
}
|
|
|
|
TEST_F(ValueHandle, AssertingVHCheckedLast) {
|
|
// If a CallbackVH exists to clear out a group of AssertingVHs on
|
|
// Value deletion, the CallbackVH should get a chance to do so
|
|
// before the AssertingVHs assert.
|
|
|
|
class ClearingVH final : public CallbackVH {
|
|
public:
|
|
AssertingVH<Value> *ToClear[2];
|
|
ClearingVH(Value *V,
|
|
AssertingVH<Value> &A0, AssertingVH<Value> &A1)
|
|
: CallbackVH(V) {
|
|
ToClear[0] = &A0;
|
|
ToClear[1] = &A1;
|
|
}
|
|
|
|
void deleted() override {
|
|
*ToClear[0] = nullptr;
|
|
*ToClear[1] = nullptr;
|
|
CallbackVH::deleted();
|
|
}
|
|
};
|
|
|
|
AssertingVH<Value> A1, A2;
|
|
A1 = BitcastV.get();
|
|
ClearingVH C(BitcastV.get(), A1, A2);
|
|
A2 = BitcastV.get();
|
|
// C.deleted() should run first, clearing the two AssertingVHs,
|
|
// which should prevent them from asserting.
|
|
BitcastV.reset();
|
|
}
|
|
|
|
}
|