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llvm-6502/unittests/IR/LegacyPassManagerTest.cpp
Chandler Carruth 49837ef811 Move the old pass manager infrastructure into a legacy namespace and 
give the files a legacy prefix in the right directory. Use forwarding
headers in the old locations to paper over the name change for most
clients during the transitional period.

No functionality changed here! This is just clearing some space to
reduce renaming churn later on with a new system.

Even when the new stuff starts to go in, it is going to be hidden behind
a flag and off-by-default as it is still WIP and under development.

This patch is specifically designed so that very little out-of-tree code
has to change. I'm going to work as hard as I can to keep that the case.
Only direct forward declarations of the PassManager class are impacted
by this change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194324 91177308-0d34-0410-b5e6-96231b3b80d8
2013-11-09 12:26:54 +00:00

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//===- llvm/unittest/IR/LegacyPassManager.cpp - Legacy PassManager tests --===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This unit test exercises the legacy pass manager infrastructure. We use the
// old names as well to ensure that the source-level compatibility wrapper
// works for out-of-tree code that expects to include llvm/PassManager.h and
// subclass the core pass classes.
//
//===----------------------------------------------------------------------===//
#include "llvm/PassManager.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Analysis/CallGraphSCCPass.h"
#include "llvm/Analysis/LoopInfo.h"
#include "llvm/Analysis/LoopPass.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/Assembly/PrintModulePass.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/CallingConv.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalVariable.h"
#include "llvm/IR/InlineAsm.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Pass.h"
#include "llvm/Support/MathExtras.h"
#include "llvm/Support/raw_ostream.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<DataLayout>());
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:
#ifndef _MSC_VER // MSVC complains that Pass is not base class.
using llvm::Pass::doInitialization;
using llvm::Pass::doFinalization;
#endif
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<DataLayout>());
run();
return false;
}
};
struct FPass : public PassTest<Module, FunctionPass> {
public:
virtual bool runOnFunction(Function &F) {
// FIXME: PR4112
// EXPECT_TRUE(getAnalysisIfAvailable<DataLayout>());
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);
}
using llvm::Pass::doInitialization;
using llvm::Pass::doFinalization;
virtual bool doInitialization(Loop* L, LPPassManager &LPM) {
initialized = true;
initcount++;
return false;
}
virtual bool runOnLoop(Loop *L, LPPassManager &LPM) {
EXPECT_TRUE(getAnalysisIfAvailable<DataLayout>());
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<DataLayout>());
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<DataLayout>());
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 DataLayout(&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 DataLayout(&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 in between
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 DataLayout(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 DataLayout(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 DataLayout(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<Type*>FuncTy_0_args;
FunctionType* FuncTy_0 = FunctionType::get(
/*Result=*/IntegerType::get(getGlobalContext(), 32),
/*Params=*/FuncTy_0_args,
/*isVarArg=*/false);
std::vector<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);
AttributeSet 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);
AttributeSet 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);
AttributeSet 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);
AttributeSet 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);AttributeSet 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);AttributeSet 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);AttributeSet 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_PASS_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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