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llvm-project/llvm/unittests/VMCore/PassManagerTest.cpp

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//===- llvm/unittest/VMCore/PassManager.cpp - Constants 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/Module.h"
#include "llvm/LLVMContext.h"
#include "llvm/PassManager.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Pass.h"
#include "llvm/Analysis/LoopPass.h"
#include "llvm/CallGraphSCCPass.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/DerivedTypes.h"
#include "llvm/Constants.h"
#include "llvm/GlobalVariable.h"
#include "llvm/Function.h"
#include "llvm/CallingConv.h"
#include "llvm/BasicBlock.h"
#include "llvm/Instructions.h"
#include "llvm/InlineAsm.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/PassManager.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/Assembly/PrintModulePass.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace llvm {
void initializeModuleNDMPass(PassRegistry&);
void initializeFPassPass(PassRegistry&);
void initializeCGPassPass(PassRegistry&);
void initializeLPassPass(PassRegistry&);
void initializeBPassPass(PassRegistry&);
namespace {
// ND = no deps
// NM = no modifications
struct ModuleNDNM: public ModulePass {
public:
static char run;
static char ID;
ModuleNDNM() : ModulePass(ID) { }
virtual bool runOnModule(Module &M) {
run++;
return false;
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
}
};
char ModuleNDNM::ID=0;
char ModuleNDNM::run=0;
struct ModuleNDM : public ModulePass {
public:
static char run;
static char ID;
ModuleNDM() : ModulePass(ID) {}
virtual bool runOnModule(Module &M) {
run++;
return true;
}
};
char ModuleNDM::ID=0;
char ModuleNDM::run=0;
struct ModuleNDM2 : public ModulePass {
public:
static char run;
static char ID;
ModuleNDM2() : ModulePass(ID) {}
virtual bool runOnModule(Module &M) {
run++;
return true;
}
};
char ModuleNDM2::ID=0;
char ModuleNDM2::run=0;
struct ModuleDNM : public ModulePass {
public:
static char run;
static char ID;
ModuleDNM() : ModulePass(ID) {
initializeModuleNDMPass(*PassRegistry::getPassRegistry());
}
virtual bool runOnModule(Module &M) {
EXPECT_TRUE(getAnalysisIfAvailable<TargetData>());
run++;
return false;
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<ModuleNDM>();
AU.setPreservesAll();
}
};
char ModuleDNM::ID=0;
char ModuleDNM::run=0;
template<typename P>
struct PassTestBase : public P {
protected:
static int runc;
static bool initialized;
static bool finalized;
int allocated;
void run() {
EXPECT_TRUE(initialized);
EXPECT_FALSE(finalized);
EXPECT_EQ(0, allocated);
allocated++;
runc++;
}
public:
static char ID;
static void finishedOK(int run) {
EXPECT_GT(runc, 0);
EXPECT_TRUE(initialized);
EXPECT_TRUE(finalized);
EXPECT_EQ(run, runc);
}
PassTestBase() : P(ID), allocated(0) {
initialized = false;
finalized = false;
runc = 0;
}
virtual void releaseMemory() {
EXPECT_GT(runc, 0);
EXPECT_GT(allocated, 0);
allocated--;
}
};
template<typename P> char PassTestBase<P>::ID;
template<typename P> int PassTestBase<P>::runc;
template<typename P> bool PassTestBase<P>::initialized;
template<typename P> bool PassTestBase<P>::finalized;
template<typename T, typename P>
struct PassTest : public PassTestBase<P> {
public:
virtual bool doInitialization(T &t) {
EXPECT_FALSE(PassTestBase<P>::initialized);
PassTestBase<P>::initialized = true;
return false;
}
virtual bool doFinalization(T &t) {
EXPECT_FALSE(PassTestBase<P>::finalized);
PassTestBase<P>::finalized = true;
EXPECT_EQ(0, PassTestBase<P>::allocated);
return false;
}
};
struct CGPass : public PassTest<CallGraph, CallGraphSCCPass> {
public:
CGPass() {
initializeCGPassPass(*PassRegistry::getPassRegistry());
}
virtual bool runOnSCC(CallGraphSCC &SCMM) {
EXPECT_TRUE(getAnalysisIfAvailable<TargetData>());
run();
return false;
}
};
struct FPass : public PassTest<Module, FunctionPass> {
public:
virtual bool runOnFunction(Function &F) {
// FIXME: PR4112
// EXPECT_TRUE(getAnalysisIfAvailable<TargetData>());
run();
return false;
}
};
struct LPass : public PassTestBase<LoopPass> {
private:
static int initcount;
static int fincount;
public:
LPass() {
initializeLPassPass(*PassRegistry::getPassRegistry());
initcount = 0; fincount=0;
EXPECT_FALSE(initialized);
}
static void finishedOK(int run, int finalized) {
PassTestBase<LoopPass>::finishedOK(run);
EXPECT_EQ(run, initcount);
EXPECT_EQ(finalized, fincount);
}
virtual bool doInitialization(Loop* L, LPPassManager &LPM) {
initialized = true;
initcount++;
return false;
}
virtual bool runOnLoop(Loop *L, LPPassManager &LPM) {
EXPECT_TRUE(getAnalysisIfAvailable<TargetData>());
run();
return false;
}
virtual bool doFinalization() {
fincount++;
finalized = true;
return false;
}
};
int LPass::initcount=0;
int LPass::fincount=0;
struct BPass : public PassTestBase<BasicBlockPass> {
private:
static int inited;
static int fin;
public:
static void finishedOK(int run, int N) {
PassTestBase<BasicBlockPass>::finishedOK(run);
EXPECT_EQ(inited, N);
EXPECT_EQ(fin, N);
}
BPass() {
inited = 0;
fin = 0;
}
virtual bool doInitialization(Module &M) {
EXPECT_FALSE(initialized);
initialized = true;
return false;
}
virtual bool doInitialization(Function &F) {
inited++;
return false;
}
virtual bool runOnBasicBlock(BasicBlock &BB) {
EXPECT_TRUE(getAnalysisIfAvailable<TargetData>());
run();
return false;
}
virtual bool doFinalization(Function &F) {
fin++;
return false;
}
virtual bool doFinalization(Module &M) {
EXPECT_FALSE(finalized);
finalized = true;
EXPECT_EQ(0, allocated);
return false;
}
};
int BPass::inited=0;
int BPass::fin=0;
struct OnTheFlyTest: public ModulePass {
public:
static char ID;
OnTheFlyTest() : ModulePass(ID) {
initializeFPassPass(*PassRegistry::getPassRegistry());
}
virtual bool runOnModule(Module &M) {
EXPECT_TRUE(getAnalysisIfAvailable<TargetData>());
for (Module::iterator I=M.begin(),E=M.end(); I != E; ++I) {
Function &F = *I;
{
SCOPED_TRACE("Running on the fly function pass");
getAnalysis<FPass>(F);
}
}
return false;
}
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.addRequired<FPass>();
}
};
char OnTheFlyTest::ID=0;
TEST(PassManager, RunOnce) {
Module M("test-once", getGlobalContext());
struct ModuleNDNM *mNDNM = new ModuleNDNM();
struct ModuleDNM *mDNM = new ModuleDNM();
struct ModuleNDM *mNDM = new ModuleNDM();
struct ModuleNDM2 *mNDM2 = new ModuleNDM2();
mNDM->run = mNDNM->run = mDNM->run = mNDM2->run = 0;
PassManager Passes;
Passes.add(new TargetData(&M));
Passes.add(mNDM2);
Passes.add(mNDM);
Passes.add(mNDNM);
Passes.add(mDNM);
Passes.run(M);
// each pass must be run exactly once, since nothing invalidates them
EXPECT_EQ(1, mNDM->run);
EXPECT_EQ(1, mNDNM->run);
EXPECT_EQ(1, mDNM->run);
EXPECT_EQ(1, mNDM2->run);
}
TEST(PassManager, ReRun) {
Module M("test-rerun", getGlobalContext());
struct ModuleNDNM *mNDNM = new ModuleNDNM();
struct ModuleDNM *mDNM = new ModuleDNM();
struct ModuleNDM *mNDM = new ModuleNDM();
struct ModuleNDM2 *mNDM2 = new ModuleNDM2();
mNDM->run = mNDNM->run = mDNM->run = mNDM2->run = 0;
PassManager Passes;
Passes.add(new TargetData(&M));
Passes.add(mNDM);
Passes.add(mNDNM);
Passes.add(mNDM2);// invalidates mNDM needed by mDNM
Passes.add(mDNM);
Passes.run(M);
// Some passes must be rerun because a pass that modified the
// module/function was run inbetween
EXPECT_EQ(2, mNDM->run);
EXPECT_EQ(1, mNDNM->run);
EXPECT_EQ(1, mNDM2->run);
EXPECT_EQ(1, mDNM->run);
}
Module* makeLLVMModule();
template<typename T>
void MemoryTestHelper(int run) {
OwningPtr<Module> M(makeLLVMModule());
T *P = new T();
PassManager Passes;
Passes.add(new TargetData(M.get()));
Passes.add(P);
Passes.run(*M);
T::finishedOK(run);
}
template<typename T>
void MemoryTestHelper(int run, int N) {
Module *M = makeLLVMModule();
T *P = new T();
PassManager Passes;
Passes.add(new TargetData(M));
Passes.add(P);
Passes.run(*M);
T::finishedOK(run, N);
delete M;
}
TEST(PassManager, Memory) {
// SCC#1: test1->test2->test3->test1
// SCC#2: test4
// SCC#3: indirect call node
{
SCOPED_TRACE("Callgraph pass");
MemoryTestHelper<CGPass>(3);
}
{
SCOPED_TRACE("Function pass");
MemoryTestHelper<FPass>(4);// 4 functions
}
{
SCOPED_TRACE("Loop pass");
MemoryTestHelper<LPass>(2, 1); //2 loops, 1 function
}
{
SCOPED_TRACE("Basic block pass");
MemoryTestHelper<BPass>(7, 4); //9 basic blocks
}
}
TEST(PassManager, MemoryOnTheFly) {
Module *M = makeLLVMModule();
{
SCOPED_TRACE("Running OnTheFlyTest");
struct OnTheFlyTest *O = new OnTheFlyTest();
PassManager Passes;
Passes.add(new TargetData(M));
Passes.add(O);
Passes.run(*M);
FPass::finishedOK(4);
}
delete M;
}
Module* makeLLVMModule() {
// Module Construction
Module* mod = new Module("test-mem", getGlobalContext());
mod->setDataLayout("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-"
"i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-"
"a0:0:64-s0:64:64-f80:128:128");
mod->setTargetTriple("x86_64-unknown-linux-gnu");
// Type Definitions
std::vector<const Type*>FuncTy_0_args;
FunctionType* FuncTy_0 = FunctionType::get(
/*Result=*/IntegerType::get(getGlobalContext(), 32),
/*Params=*/FuncTy_0_args,
/*isVarArg=*/false);
std::vector<const Type*>FuncTy_2_args;
FuncTy_2_args.push_back(IntegerType::get(getGlobalContext(), 1));
FunctionType* FuncTy_2 = FunctionType::get(
/*Result=*/Type::getVoidTy(getGlobalContext()),
/*Params=*/FuncTy_2_args,
/*isVarArg=*/false);
// Function Declarations
Function* func_test1 = Function::Create(
/*Type=*/FuncTy_0,
/*Linkage=*/GlobalValue::ExternalLinkage,
/*Name=*/"test1", mod);
func_test1->setCallingConv(CallingConv::C);
AttrListPtr func_test1_PAL;
func_test1->setAttributes(func_test1_PAL);
Function* func_test2 = Function::Create(
/*Type=*/FuncTy_0,
/*Linkage=*/GlobalValue::ExternalLinkage,
/*Name=*/"test2", mod);
func_test2->setCallingConv(CallingConv::C);
AttrListPtr func_test2_PAL;
func_test2->setAttributes(func_test2_PAL);
Function* func_test3 = Function::Create(
/*Type=*/FuncTy_0,
/*Linkage=*/GlobalValue::ExternalLinkage,
/*Name=*/"test3", mod);
func_test3->setCallingConv(CallingConv::C);
AttrListPtr func_test3_PAL;
func_test3->setAttributes(func_test3_PAL);
Function* func_test4 = Function::Create(
/*Type=*/FuncTy_2,
/*Linkage=*/GlobalValue::ExternalLinkage,
/*Name=*/"test4", mod);
func_test4->setCallingConv(CallingConv::C);
AttrListPtr func_test4_PAL;
func_test4->setAttributes(func_test4_PAL);
// Global Variable Declarations
// Constant Definitions
// Global Variable Definitions
// Function Definitions
// Function: test1 (func_test1)
{
BasicBlock* label_entry = BasicBlock::Create(getGlobalContext(), "entry",func_test1,0);
// Block entry (label_entry)
CallInst* int32_3 = CallInst::Create(func_test2, "", label_entry);
int32_3->setCallingConv(CallingConv::C);
int32_3->setTailCall(false);AttrListPtr int32_3_PAL;
int32_3->setAttributes(int32_3_PAL);
ReturnInst::Create(getGlobalContext(), int32_3, label_entry);
}
// Function: test2 (func_test2)
{
BasicBlock* label_entry_5 = BasicBlock::Create(getGlobalContext(), "entry",func_test2,0);
// Block entry (label_entry_5)
CallInst* int32_6 = CallInst::Create(func_test3, "", label_entry_5);
int32_6->setCallingConv(CallingConv::C);
int32_6->setTailCall(false);AttrListPtr int32_6_PAL;
int32_6->setAttributes(int32_6_PAL);
ReturnInst::Create(getGlobalContext(), int32_6, label_entry_5);
}
// Function: test3 (func_test3)
{
BasicBlock* label_entry_8 = BasicBlock::Create(getGlobalContext(), "entry",func_test3,0);
// Block entry (label_entry_8)
CallInst* int32_9 = CallInst::Create(func_test1, "", label_entry_8);
int32_9->setCallingConv(CallingConv::C);
int32_9->setTailCall(false);AttrListPtr int32_9_PAL;
int32_9->setAttributes(int32_9_PAL);
ReturnInst::Create(getGlobalContext(), int32_9, label_entry_8);
}
// Function: test4 (func_test4)
{
Function::arg_iterator args = func_test4->arg_begin();
Value* int1_f = args++;
int1_f->setName("f");
BasicBlock* label_entry_11 = BasicBlock::Create(getGlobalContext(), "entry",func_test4,0);
BasicBlock* label_bb = BasicBlock::Create(getGlobalContext(), "bb",func_test4,0);
BasicBlock* label_bb1 = BasicBlock::Create(getGlobalContext(), "bb1",func_test4,0);
BasicBlock* label_return = BasicBlock::Create(getGlobalContext(), "return",func_test4,0);
// Block entry (label_entry_11)
BranchInst::Create(label_bb, label_entry_11);
// Block bb (label_bb)
BranchInst::Create(label_bb, label_bb1, int1_f, label_bb);
// Block bb1 (label_bb1)
BranchInst::Create(label_bb1, label_return, int1_f, label_bb1);
// Block return (label_return)
ReturnInst::Create(getGlobalContext(), label_return);
}
return mod;
}
}
}
INITIALIZE_PASS(ModuleNDM, "mndm", "mndm", false, false)
INITIALIZE_PASS_BEGIN(CGPass, "cgp","cgp", false, false)
INITIALIZE_AG_DEPENDENCY(CallGraph)
INITIALIZE_PASS_END(CGPass, "cgp","cgp", false, false)
INITIALIZE_PASS(FPass, "fp","fp", false, false)
INITIALIZE_PASS_BEGIN(LPass, "lp","lp", false, false)
INITIALIZE_PASS_DEPENDENCY(LoopInfo)
INITIALIZE_PASS_END(LPass, "lp","lp", false, false)
INITIALIZE_PASS(BPass, "bp","bp", false, false)
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