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llvm-project/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp

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//===- llvm/unittest/IR/OpenMPIRBuilderTest.cpp - OpenMPIRBuilder tests ---===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Frontend/OpenMP/OMPConstants.h"
#include "llvm/Frontend/OpenMP/OMPIRBuilder.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/InstIterator.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
#include "llvm/Passes/PassBuilder.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#include "gtest/gtest.h"
using namespace llvm;
using namespace omp;
namespace {
/// Create an instruction that uses the values in \p Values. We use "printf"
/// just because it is often used for this purpose in test code, but it is never
/// executed here.
static CallInst *createPrintfCall(IRBuilder<> &Builder, StringRef FormatStr,
ArrayRef<Value *> Values) {
Module *M = Builder.GetInsertBlock()->getParent()->getParent();
GlobalVariable *GV = Builder.CreateGlobalString(FormatStr, "", 0, M);
Constant *Zero = ConstantInt::get(Type::getInt32Ty(M->getContext()), 0);
Constant *Indices[] = {Zero, Zero};
Constant *FormatStrConst =
ConstantExpr::getInBoundsGetElementPtr(GV->getValueType(), GV, Indices);
Function *PrintfDecl = M->getFunction("printf");
if (!PrintfDecl) {
GlobalValue::LinkageTypes Linkage = Function::ExternalLinkage;
FunctionType *Ty = FunctionType::get(Builder.getInt32Ty(), true);
PrintfDecl = Function::Create(Ty, Linkage, "printf", M);
}
SmallVector<Value *, 4> Args;
Args.push_back(FormatStrConst);
Args.append(Values.begin(), Values.end());
return Builder.CreateCall(PrintfDecl, Args);
}
/// Verify that blocks in \p RefOrder are corresponds to the depth-first visit
/// order the control flow of \p F.
///
/// This is an easy way to verify the branching structure of the CFG without
/// checking every branch instruction individually. For the CFG of a
/// CanonicalLoopInfo, the Cond BB's terminating branch's first edge is entering
/// the body, i.e. the DFS order corresponds to the execution order with one
/// loop iteration.
static testing::AssertionResult
verifyDFSOrder(Function *F, ArrayRef<BasicBlock *> RefOrder) {
ArrayRef<BasicBlock *>::iterator It = RefOrder.begin();
ArrayRef<BasicBlock *>::iterator E = RefOrder.end();
df_iterator_default_set<BasicBlock *, 16> Visited;
auto DFS = llvm::depth_first_ext(&F->getEntryBlock(), Visited);
BasicBlock *Prev = nullptr;
for (BasicBlock *BB : DFS) {
if (It != E && BB == *It) {
Prev = *It;
++It;
}
}
if (It == E)
return testing::AssertionSuccess();
if (!Prev)
return testing::AssertionFailure()
<< "Did not find " << (*It)->getName() << " in control flow";
return testing::AssertionFailure()
<< "Expected " << Prev->getName() << " before " << (*It)->getName()
<< " in control flow";
}
/// Verify that blocks in \p RefOrder are in the same relative order in the
/// linked lists of blocks in \p F. The linked list may contain additional
/// blocks in-between.
///
/// While the order in the linked list is not relevant for semantics, keeping
/// the order roughly in execution order makes its printout easier to read.
static testing::AssertionResult
verifyListOrder(Function *F, ArrayRef<BasicBlock *> RefOrder) {
ArrayRef<BasicBlock *>::iterator It = RefOrder.begin();
ArrayRef<BasicBlock *>::iterator E = RefOrder.end();
BasicBlock *Prev = nullptr;
for (BasicBlock &BB : *F) {
if (It != E && &BB == *It) {
Prev = *It;
++It;
}
}
if (It == E)
return testing::AssertionSuccess();
if (!Prev)
return testing::AssertionFailure() << "Did not find " << (*It)->getName()
<< " in function " << F->getName();
return testing::AssertionFailure()
<< "Expected " << Prev->getName() << " before " << (*It)->getName()
<< " in function " << F->getName();
}
/// Populate Calls with call instructions calling the function with the given
/// FnID from the given function F.
static void findCalls(Function *F, omp::RuntimeFunction FnID,
OpenMPIRBuilder &OMPBuilder,
SmallVectorImpl<CallInst *> &Calls) {
Function *Fn = OMPBuilder.getOrCreateRuntimeFunctionPtr(FnID);
for (BasicBlock &BB : *F) {
for (Instruction &I : BB) {
auto *Call = dyn_cast<CallInst>(&I);
if (Call && Call->getCalledFunction() == Fn)
Calls.push_back(Call);
}
}
}
/// Assuming \p F contains only one call to the function with the given \p FnID,
/// return that call.
static CallInst *findSingleCall(Function *F, omp::RuntimeFunction FnID,
OpenMPIRBuilder &OMPBuilder) {
SmallVector<CallInst *, 1> Calls;
findCalls(F, FnID, OMPBuilder, Calls);
EXPECT_EQ(1u, Calls.size());
if (Calls.size() != 1)
return nullptr;
return Calls.front();
}
static omp::ScheduleKind getSchedKind(omp::OMPScheduleType SchedType) {
switch (SchedType & ~omp::OMPScheduleType::ModifierMask) {
case omp::OMPScheduleType::BaseDynamicChunked:
return omp::OMP_SCHEDULE_Dynamic;
case omp::OMPScheduleType::BaseGuidedChunked:
return omp::OMP_SCHEDULE_Guided;
case omp::OMPScheduleType::BaseAuto:
return omp::OMP_SCHEDULE_Auto;
case omp::OMPScheduleType::BaseRuntime:
return omp::OMP_SCHEDULE_Runtime;
default:
llvm_unreachable("unknown type for this test");
}
}
class OpenMPIRBuilderTest : public testing::Test {
protected:
void SetUp() override {
Ctx.setOpaquePointers(false); // TODO: Update tests for opaque pointers.
M.reset(new Module("MyModule", Ctx));
FunctionType *FTy =
FunctionType::get(Type::getVoidTy(Ctx), {Type::getInt32Ty(Ctx)},
/*isVarArg=*/false);
F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
BB = BasicBlock::Create(Ctx, "", F);
DIBuilder DIB(*M);
auto File = DIB.createFile("test.dbg", "/src", llvm::None,
Optional<StringRef>("/src/test.dbg"));
auto CU =
DIB.createCompileUnit(dwarf::DW_LANG_C, File, "llvm-C", true, "", 0);
auto Type = DIB.createSubroutineType(DIB.getOrCreateTypeArray(None));
auto SP = DIB.createFunction(
CU, "foo", "", File, 1, Type, 1, DINode::FlagZero,
DISubprogram::SPFlagDefinition | DISubprogram::SPFlagOptimized);
F->setSubprogram(SP);
auto Scope = DIB.createLexicalBlockFile(SP, File, 0);
DIB.finalize();
DL = DILocation::get(Ctx, 3, 7, Scope);
}
void TearDown() override {
BB = nullptr;
M.reset();
}
/// Create a function with a simple loop that calls printf using the logical
/// loop counter for use with tests that need a CanonicalLoopInfo object.
CanonicalLoopInfo *buildSingleLoopFunction(DebugLoc DL,
OpenMPIRBuilder &OMPBuilder,
int UseIVBits,
CallInst **Call = nullptr,
BasicBlock **BodyCode = nullptr) {
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Value *TripCount = F->getArg(0);
Type *IVType = Type::getIntNTy(Builder.getContext(), UseIVBits);
Value *CastedTripCount =
Builder.CreateZExtOrTrunc(TripCount, IVType, "tripcount");
auto LoopBodyGenCB = [&](OpenMPIRBuilder::InsertPointTy CodeGenIP,
llvm::Value *LC) {
Builder.restoreIP(CodeGenIP);
if (BodyCode)
*BodyCode = Builder.GetInsertBlock();
// Add something that consumes the induction variable to the body.
CallInst *CallInst = createPrintfCall(Builder, "%d\\n", {LC});
if (Call)
*Call = CallInst;
};
CanonicalLoopInfo *Loop =
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGenCB, CastedTripCount);
// Finalize the function.
Builder.restoreIP(Loop->getAfterIP());
Builder.CreateRetVoid();
return Loop;
}
LLVMContext Ctx;
std::unique_ptr<Module> M;
Function *F;
BasicBlock *BB;
DebugLoc DL;
};
class OpenMPIRBuilderTestWithParams
: public OpenMPIRBuilderTest,
public ::testing::WithParamInterface<omp::OMPScheduleType> {};
class OpenMPIRBuilderTestWithIVBits
: public OpenMPIRBuilderTest,
public ::testing::WithParamInterface<int> {};
// Returns the value stored in the given allocation. Returns null if the given
// value is not a result of an InstTy instruction, if no value is stored or if
// there is more than one store.
template <typename InstTy> static Value *findStoredValue(Value *AllocaValue) {
Instruction *Inst = dyn_cast<InstTy>(AllocaValue);
if (!Inst)
return nullptr;
StoreInst *Store = nullptr;
for (Use &U : Inst->uses()) {
if (auto *CandidateStore = dyn_cast<StoreInst>(U.getUser())) {
EXPECT_EQ(Store, nullptr);
Store = CandidateStore;
}
}
if (!Store)
return nullptr;
return Store->getValueOperand();
}
// Returns the value stored in the aggregate argument of an outlined function,
// or nullptr if it is not found.
static Value *findStoredValueInAggregateAt(LLVMContext &Ctx, Value *Aggregate,
unsigned Idx) {
GetElementPtrInst *GEPAtIdx = nullptr;
// Find GEP instruction at that index.
for (User *Usr : Aggregate->users()) {
GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Usr);
if (!GEP)
continue;
if (GEP->getOperand(2) != ConstantInt::get(Type::getInt32Ty(Ctx), Idx))
continue;
EXPECT_EQ(GEPAtIdx, nullptr);
GEPAtIdx = GEP;
}
EXPECT_NE(GEPAtIdx, nullptr);
EXPECT_EQ(GEPAtIdx->getNumUses(), 1U);
// Find the value stored to the aggregate.
StoreInst *StoreToAgg = dyn_cast<StoreInst>(*GEPAtIdx->user_begin());
Value *StoredAggValue = StoreToAgg->getValueOperand();
Value *StoredValue = nullptr;
// Find the value stored to the value stored in the aggregate.
for (User *Usr : StoredAggValue->users()) {
StoreInst *Store = dyn_cast<StoreInst>(Usr);
if (!Store)
continue;
if (Store->getPointerOperand() != StoredAggValue)
continue;
EXPECT_EQ(StoredValue, nullptr);
StoredValue = Store->getValueOperand();
}
return StoredValue;
}
// Returns the aggregate that the value is originating from.
static Value *findAggregateFromValue(Value *V) {
// Expects a load instruction that loads from the aggregate.
LoadInst *Load = dyn_cast<LoadInst>(V);
EXPECT_NE(Load, nullptr);
// Find the GEP instruction used in the load instruction.
GetElementPtrInst *GEP =
dyn_cast<GetElementPtrInst>(Load->getPointerOperand());
EXPECT_NE(GEP, nullptr);
// Find the aggregate used in the GEP instruction.
Value *Aggregate = GEP->getPointerOperand();
return Aggregate;
}
TEST_F(OpenMPIRBuilderTest, CreateBarrier) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OMPBuilder.createBarrier({IRBuilder<>::InsertPoint()}, OMPD_for);
EXPECT_TRUE(M->global_empty());
EXPECT_EQ(M->size(), 1U);
EXPECT_EQ(F->size(), 1U);
EXPECT_EQ(BB->size(), 0U);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
OMPBuilder.createBarrier(Loc, OMPD_for);
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 3U);
EXPECT_EQ(F->size(), 1U);
EXPECT_EQ(BB->size(), 2U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_EQ(cast<CallInst>(Barrier)->getArgOperand(1), GTID);
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateCancel) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
BasicBlock *CBB = BasicBlock::Create(Ctx, "", F);
new UnreachableInst(Ctx, CBB);
auto FiniCB = [&](InsertPointTy IP) {
ASSERT_NE(IP.getBlock(), nullptr);
ASSERT_EQ(IP.getBlock()->end(), IP.getPoint());
BranchInst::Create(CBB, IP.getBlock());
};
OMPBuilder.pushFinalizationCB({FiniCB, OMPD_parallel, true});
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
auto NewIP = OMPBuilder.createCancel(Loc, nullptr, OMPD_parallel);
Builder.restoreIP(NewIP);
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 4U);
EXPECT_EQ(F->size(), 4U);
EXPECT_EQ(BB->size(), 4U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Cancel = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Cancel, nullptr);
EXPECT_EQ(Cancel->arg_size(), 3U);
EXPECT_EQ(Cancel->getCalledFunction()->getName(), "__kmpc_cancel");
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotFreeMemory());
EXPECT_EQ(Cancel->getNumUses(), 1U);
Instruction *CancelBBTI = Cancel->getParent()->getTerminator();
EXPECT_EQ(CancelBBTI->getNumSuccessors(), 2U);
EXPECT_EQ(CancelBBTI->getSuccessor(0), NewIP.getBlock());
EXPECT_EQ(CancelBBTI->getSuccessor(1)->size(), 3U);
CallInst *GTID1 = dyn_cast<CallInst>(&CancelBBTI->getSuccessor(1)->front());
EXPECT_NE(GTID1, nullptr);
EXPECT_EQ(GTID1->arg_size(), 1U);
EXPECT_EQ(GTID1->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID1->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_cancel_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_EQ(Barrier->getNumUses(), 0U);
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getNumSuccessors(),
1U);
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getSuccessor(0), CBB);
EXPECT_EQ(cast<CallInst>(Cancel)->getArgOperand(1), GTID);
OMPBuilder.popFinalizationCB();
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateCancelIfCond) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
BasicBlock *CBB = BasicBlock::Create(Ctx, "", F);
new UnreachableInst(Ctx, CBB);
auto FiniCB = [&](InsertPointTy IP) {
ASSERT_NE(IP.getBlock(), nullptr);
ASSERT_EQ(IP.getBlock()->end(), IP.getPoint());
BranchInst::Create(CBB, IP.getBlock());
};
OMPBuilder.pushFinalizationCB({FiniCB, OMPD_parallel, true});
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
auto NewIP = OMPBuilder.createCancel(Loc, Builder.getTrue(), OMPD_parallel);
Builder.restoreIP(NewIP);
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 4U);
EXPECT_EQ(F->size(), 7U);
EXPECT_EQ(BB->size(), 1U);
ASSERT_TRUE(isa<BranchInst>(BB->getTerminator()));
ASSERT_EQ(BB->getTerminator()->getNumSuccessors(), 2U);
BB = BB->getTerminator()->getSuccessor(0);
EXPECT_EQ(BB->size(), 4U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Cancel = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Cancel, nullptr);
EXPECT_EQ(Cancel->arg_size(), 3U);
EXPECT_EQ(Cancel->getCalledFunction()->getName(), "__kmpc_cancel");
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Cancel->getCalledFunction()->doesNotFreeMemory());
EXPECT_EQ(Cancel->getNumUses(), 1U);
Instruction *CancelBBTI = Cancel->getParent()->getTerminator();
EXPECT_EQ(CancelBBTI->getNumSuccessors(), 2U);
EXPECT_EQ(CancelBBTI->getSuccessor(0)->size(), 1U);
EXPECT_EQ(CancelBBTI->getSuccessor(0)->getUniqueSuccessor(),
NewIP.getBlock());
EXPECT_EQ(CancelBBTI->getSuccessor(1)->size(), 3U);
CallInst *GTID1 = dyn_cast<CallInst>(&CancelBBTI->getSuccessor(1)->front());
EXPECT_NE(GTID1, nullptr);
EXPECT_EQ(GTID1->arg_size(), 1U);
EXPECT_EQ(GTID1->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID1->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID1->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_cancel_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_EQ(Barrier->getNumUses(), 0U);
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getNumSuccessors(),
1U);
EXPECT_EQ(CancelBBTI->getSuccessor(1)->getTerminator()->getSuccessor(0), CBB);
EXPECT_EQ(cast<CallInst>(Cancel)->getArgOperand(1), GTID);
OMPBuilder.popFinalizationCB();
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateCancelBarrier) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
BasicBlock *CBB = BasicBlock::Create(Ctx, "", F);
new UnreachableInst(Ctx, CBB);
auto FiniCB = [&](InsertPointTy IP) {
ASSERT_NE(IP.getBlock(), nullptr);
ASSERT_EQ(IP.getBlock()->end(), IP.getPoint());
BranchInst::Create(CBB, IP.getBlock());
};
OMPBuilder.pushFinalizationCB({FiniCB, OMPD_parallel, true});
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP()});
auto NewIP = OMPBuilder.createBarrier(Loc, OMPD_for);
Builder.restoreIP(NewIP);
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(M->size(), 3U);
EXPECT_EQ(F->size(), 4U);
EXPECT_EQ(BB->size(), 4U);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
EXPECT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Barrier = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_NE(Barrier, nullptr);
EXPECT_EQ(Barrier->arg_size(), 2U);
EXPECT_EQ(Barrier->getCalledFunction()->getName(), "__kmpc_cancel_barrier");
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(Barrier->getCalledFunction()->doesNotFreeMemory());
EXPECT_EQ(Barrier->getNumUses(), 1U);
Instruction *BarrierBBTI = Barrier->getParent()->getTerminator();
EXPECT_EQ(BarrierBBTI->getNumSuccessors(), 2U);
EXPECT_EQ(BarrierBBTI->getSuccessor(0), NewIP.getBlock());
EXPECT_EQ(BarrierBBTI->getSuccessor(1)->size(), 1U);
EXPECT_EQ(BarrierBBTI->getSuccessor(1)->getTerminator()->getNumSuccessors(),
1U);
EXPECT_EQ(BarrierBBTI->getSuccessor(1)->getTerminator()->getSuccessor(0),
CBB);
EXPECT_EQ(cast<CallInst>(Barrier)->getArgOperand(1), GTID);
OMPBuilder.popFinalizationCB();
Builder.CreateUnreachable();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, DbgLoc) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
OMPBuilder.createBarrier(Loc, OMPD_for);
CallInst *GTID = dyn_cast<CallInst>(&BB->front());
CallInst *Barrier = dyn_cast<CallInst>(GTID->getNextNode());
EXPECT_EQ(GTID->getDebugLoc(), DL);
EXPECT_EQ(Barrier->getDebugLoc(), DL);
EXPECT_TRUE(isa<GlobalVariable>(Barrier->getOperand(0)));
if (!isa<GlobalVariable>(Barrier->getOperand(0)))
return;
GlobalVariable *Ident = cast<GlobalVariable>(Barrier->getOperand(0));
EXPECT_TRUE(Ident->hasInitializer());
if (!Ident->hasInitializer())
return;
Constant *Initializer = Ident->getInitializer();
EXPECT_TRUE(
isa<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts()));
GlobalVariable *SrcStrGlob =
cast<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts());
if (!SrcStrGlob)
return;
EXPECT_TRUE(isa<ConstantDataArray>(SrcStrGlob->getInitializer()));
ConstantDataArray *SrcSrc =
dyn_cast<ConstantDataArray>(SrcStrGlob->getInitializer());
if (!SrcSrc)
return;
EXPECT_EQ(SrcSrc->getAsCString(), ";/src/test.dbg;foo;3;7;;");
}
TEST_F(OpenMPIRBuilderTest, ParallelSimple) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
unsigned NumBodiesGenerated = 0;
unsigned NumPrivatizedVars = 0;
unsigned NumFinalizationPoints = 0;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumBodiesGenerated;
Builder.restoreIP(AllocaIP);
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
Builder.restoreIP(CodeGenIP);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Value *Cmp = Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
++NumPrivatizedVars;
if (!isa<AllocaInst>(Orig)) {
EXPECT_EQ(&Orig, F->arg_begin());
ReplacementValue = &Inner;
return CodeGenIP;
}
// Since the original value is an allocation, it has a pointer type and
// therefore no additional wrapping should happen.
EXPECT_EQ(&Orig, &Inner);
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) { ++NumFinalizationPoints; };
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
IRBuilder<>::InsertPoint AfterIP =
OMPBuilder.createParallel(Loc, AllocaIP, BodyGenCB, PrivCB, FiniCB,
nullptr, nullptr, OMP_PROC_BIND_default, false);
EXPECT_EQ(NumBodiesGenerated, 1U);
EXPECT_EQ(NumPrivatizedVars, 1U);
EXPECT_EQ(NumFinalizationPoints, 1U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_NE(PrivAI, nullptr);
Function *OutlinedFn = PrivAI->getFunction();
EXPECT_NE(F, OutlinedFn);
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn->hasFnAttribute(Attribute::NoUnwind));
EXPECT_TRUE(OutlinedFn->hasFnAttribute(Attribute::NoRecurse));
EXPECT_TRUE(OutlinedFn->hasParamAttribute(0, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn->hasParamAttribute(1, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn->hasInternalLinkage());
EXPECT_EQ(OutlinedFn->arg_size(), 3U);
EXPECT_EQ(&OutlinedFn->getEntryBlock(), PrivAI->getParent());
EXPECT_EQ(OutlinedFn->getNumUses(), 1U);
User *Usr = OutlinedFn->user_back();
ASSERT_TRUE(isa<ConstantExpr>(Usr));
CallInst *ForkCI = dyn_cast<CallInst>(Usr->user_back());
ASSERT_NE(ForkCI, nullptr);
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call");
EXPECT_EQ(ForkCI->arg_size(), 4U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 1U));
EXPECT_EQ(ForkCI->getArgOperand(2), Usr);
Value *StoredValue =
findStoredValueInAggregateAt(Ctx, ForkCI->getArgOperand(3), 0);
EXPECT_EQ(StoredValue, F->arg_begin());
}
TEST_F(OpenMPIRBuilderTest, ParallelNested) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned NumInnerBodiesGenerated = 0;
unsigned NumOuterBodiesGenerated = 0;
unsigned NumFinalizationPoints = 0;
auto InnerBodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumInnerBodiesGenerated;
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) { ++NumFinalizationPoints; };
auto OuterBodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumOuterBodiesGenerated;
Builder.restoreIP(CodeGenIP);
BasicBlock *CGBB = CodeGenIP.getBlock();
BasicBlock *NewBB = SplitBlock(CGBB, &*CodeGenIP.getPoint());
CGBB->getTerminator()->eraseFromParent();
;
IRBuilder<>::InsertPoint AfterIP = OMPBuilder.createParallel(
InsertPointTy(CGBB, CGBB->end()), AllocaIP, InnerBodyGenCB, PrivCB,
FiniCB, nullptr, nullptr, OMP_PROC_BIND_default, false);
Builder.restoreIP(AfterIP);
Builder.CreateBr(NewBB);
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
IRBuilder<>::InsertPoint AfterIP =
OMPBuilder.createParallel(Loc, AllocaIP, OuterBodyGenCB, PrivCB, FiniCB,
nullptr, nullptr, OMP_PROC_BIND_default, false);
EXPECT_EQ(NumInnerBodiesGenerated, 1U);
EXPECT_EQ(NumOuterBodiesGenerated, 1U);
EXPECT_EQ(NumFinalizationPoints, 2U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_EQ(M->size(), 5U);
for (Function &OutlinedFn : *M) {
if (F == &OutlinedFn || OutlinedFn.isDeclaration())
continue;
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn.hasFnAttribute(Attribute::NoUnwind));
EXPECT_TRUE(OutlinedFn.hasFnAttribute(Attribute::NoRecurse));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(0, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(1, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasInternalLinkage());
EXPECT_EQ(OutlinedFn.arg_size(), 2U);
EXPECT_EQ(OutlinedFn.getNumUses(), 1U);
User *Usr = OutlinedFn.user_back();
ASSERT_TRUE(isa<ConstantExpr>(Usr));
CallInst *ForkCI = dyn_cast<CallInst>(Usr->user_back());
ASSERT_NE(ForkCI, nullptr);
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call");
EXPECT_EQ(ForkCI->arg_size(), 3U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 0U));
EXPECT_EQ(ForkCI->getArgOperand(2), Usr);
}
}
TEST_F(OpenMPIRBuilderTest, ParallelNested2Inner) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned NumInnerBodiesGenerated = 0;
unsigned NumOuterBodiesGenerated = 0;
unsigned NumFinalizationPoints = 0;
auto InnerBodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumInnerBodiesGenerated;
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) { ++NumFinalizationPoints; };
auto OuterBodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumOuterBodiesGenerated;
Builder.restoreIP(CodeGenIP);
BasicBlock *CGBB = CodeGenIP.getBlock();
BasicBlock *NewBB1 = SplitBlock(CGBB, &*CodeGenIP.getPoint());
BasicBlock *NewBB2 = SplitBlock(NewBB1, &*NewBB1->getFirstInsertionPt());
CGBB->getTerminator()->eraseFromParent();
;
NewBB1->getTerminator()->eraseFromParent();
;
IRBuilder<>::InsertPoint AfterIP1 = OMPBuilder.createParallel(
InsertPointTy(CGBB, CGBB->end()), AllocaIP, InnerBodyGenCB, PrivCB,
FiniCB, nullptr, nullptr, OMP_PROC_BIND_default, false);
Builder.restoreIP(AfterIP1);
Builder.CreateBr(NewBB1);
IRBuilder<>::InsertPoint AfterIP2 = OMPBuilder.createParallel(
InsertPointTy(NewBB1, NewBB1->end()), AllocaIP, InnerBodyGenCB, PrivCB,
FiniCB, nullptr, nullptr, OMP_PROC_BIND_default, false);
Builder.restoreIP(AfterIP2);
Builder.CreateBr(NewBB2);
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
IRBuilder<>::InsertPoint AfterIP =
OMPBuilder.createParallel(Loc, AllocaIP, OuterBodyGenCB, PrivCB, FiniCB,
nullptr, nullptr, OMP_PROC_BIND_default, false);
EXPECT_EQ(NumInnerBodiesGenerated, 2U);
EXPECT_EQ(NumOuterBodiesGenerated, 1U);
EXPECT_EQ(NumFinalizationPoints, 3U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_EQ(M->size(), 6U);
for (Function &OutlinedFn : *M) {
if (F == &OutlinedFn || OutlinedFn.isDeclaration())
continue;
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn.hasFnAttribute(Attribute::NoUnwind));
EXPECT_TRUE(OutlinedFn.hasFnAttribute(Attribute::NoRecurse));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(0, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasParamAttribute(1, Attribute::NoAlias));
EXPECT_TRUE(OutlinedFn.hasInternalLinkage());
EXPECT_EQ(OutlinedFn.arg_size(), 2U);
unsigned NumAllocas = 0;
for (Instruction &I : instructions(OutlinedFn))
NumAllocas += isa<AllocaInst>(I);
EXPECT_EQ(NumAllocas, 1U);
EXPECT_EQ(OutlinedFn.getNumUses(), 1U);
User *Usr = OutlinedFn.user_back();
ASSERT_TRUE(isa<ConstantExpr>(Usr));
CallInst *ForkCI = dyn_cast<CallInst>(Usr->user_back());
ASSERT_NE(ForkCI, nullptr);
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call");
EXPECT_EQ(ForkCI->arg_size(), 3U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 0U));
EXPECT_EQ(ForkCI->getArgOperand(2), Usr);
}
}
TEST_F(OpenMPIRBuilderTest, ParallelIfCond) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
unsigned NumBodiesGenerated = 0;
unsigned NumPrivatizedVars = 0;
unsigned NumFinalizationPoints = 0;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumBodiesGenerated;
Builder.restoreIP(AllocaIP);
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
Builder.restoreIP(CodeGenIP);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Value *Cmp = Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, &*Builder.GetInsertPoint(), &ThenTerm,
&ElseTerm);
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
Value &Orig, Value &Inner,
Value *&ReplacementValue) -> InsertPointTy {
++NumPrivatizedVars;
if (!isa<AllocaInst>(Orig)) {
EXPECT_EQ(&Orig, F->arg_begin());
ReplacementValue = &Inner;
return CodeGenIP;
}
// Since the original value is an allocation, it has a pointer type and
// therefore no additional wrapping should happen.
EXPECT_EQ(&Orig, &Inner);
// Trivial copy (=firstprivate).
Builder.restoreIP(AllocaIP);
Type *VTy = ReplacementValue->getType();
Value *V = Builder.CreateLoad(VTy, &Inner, Orig.getName() + ".reload");
ReplacementValue = Builder.CreateAlloca(VTy, 0, Orig.getName() + ".copy");
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(V, ReplacementValue);
return CodeGenIP;
};
auto FiniCB = [&](InsertPointTy CodeGenIP) {
++NumFinalizationPoints;
// No destructors.
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
IRBuilder<>::InsertPoint AfterIP =
OMPBuilder.createParallel(Loc, AllocaIP, BodyGenCB, PrivCB, FiniCB,
Builder.CreateIsNotNull(F->arg_begin()),
nullptr, OMP_PROC_BIND_default, false);
EXPECT_EQ(NumBodiesGenerated, 1U);
EXPECT_EQ(NumPrivatizedVars, 1U);
EXPECT_EQ(NumFinalizationPoints, 1U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_NE(PrivAI, nullptr);
Function *OutlinedFn = PrivAI->getFunction();
EXPECT_NE(F, OutlinedFn);
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_TRUE(OutlinedFn->hasInternalLinkage());
EXPECT_EQ(OutlinedFn->arg_size(), 3U);
EXPECT_EQ(&OutlinedFn->getEntryBlock(), PrivAI->getParent());
ASSERT_EQ(OutlinedFn->getNumUses(), 2U);
CallInst *DirectCI = nullptr;
CallInst *ForkCI = nullptr;
for (User *Usr : OutlinedFn->users()) {
if (isa<CallInst>(Usr)) {
ASSERT_EQ(DirectCI, nullptr);
DirectCI = cast<CallInst>(Usr);
} else {
ASSERT_TRUE(isa<ConstantExpr>(Usr));
ASSERT_EQ(Usr->getNumUses(), 1U);
ASSERT_TRUE(isa<CallInst>(Usr->user_back()));
ForkCI = cast<CallInst>(Usr->user_back());
}
}
EXPECT_EQ(ForkCI->getCalledFunction()->getName(), "__kmpc_fork_call");
EXPECT_EQ(ForkCI->arg_size(), 4U);
EXPECT_TRUE(isa<GlobalVariable>(ForkCI->getArgOperand(0)));
EXPECT_EQ(ForkCI->getArgOperand(1),
ConstantInt::get(Type::getInt32Ty(Ctx), 1));
Value *StoredForkArg =
findStoredValueInAggregateAt(Ctx, ForkCI->getArgOperand(3), 0);
EXPECT_EQ(StoredForkArg, F->arg_begin());
EXPECT_EQ(DirectCI->getCalledFunction(), OutlinedFn);
EXPECT_EQ(DirectCI->arg_size(), 3U);
EXPECT_TRUE(isa<AllocaInst>(DirectCI->getArgOperand(0)));
EXPECT_TRUE(isa<AllocaInst>(DirectCI->getArgOperand(1)));
Value *StoredDirectArg =
findStoredValueInAggregateAt(Ctx, DirectCI->getArgOperand(2), 0);
EXPECT_EQ(StoredDirectArg, F->arg_begin());
}
TEST_F(OpenMPIRBuilderTest, ParallelCancelBarrier) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned NumBodiesGenerated = 0;
unsigned NumPrivatizedVars = 0;
unsigned NumFinalizationPoints = 0;
CallInst *CheckedBarrier = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumBodiesGenerated;
Builder.restoreIP(CodeGenIP);
// Create three barriers, two cancel barriers but only one checked.
Function *CBFn, *BFn;
Builder.restoreIP(
OMPBuilder.createBarrier(Builder.saveIP(), OMPD_parallel));
CBFn = M->getFunction("__kmpc_cancel_barrier");
BFn = M->getFunction("__kmpc_barrier");
ASSERT_NE(CBFn, nullptr);
ASSERT_EQ(BFn, nullptr);
ASSERT_EQ(CBFn->getNumUses(), 1U);
ASSERT_TRUE(isa<CallInst>(CBFn->user_back()));
ASSERT_EQ(CBFn->user_back()->getNumUses(), 1U);
CheckedBarrier = cast<CallInst>(CBFn->user_back());
Builder.restoreIP(
OMPBuilder.createBarrier(Builder.saveIP(), OMPD_parallel, true));
CBFn = M->getFunction("__kmpc_cancel_barrier");
BFn = M->getFunction("__kmpc_barrier");
ASSERT_NE(CBFn, nullptr);
ASSERT_NE(BFn, nullptr);
ASSERT_EQ(CBFn->getNumUses(), 1U);
ASSERT_EQ(BFn->getNumUses(), 1U);
ASSERT_TRUE(isa<CallInst>(BFn->user_back()));
ASSERT_EQ(BFn->user_back()->getNumUses(), 0U);
Builder.restoreIP(OMPBuilder.createBarrier(Builder.saveIP(), OMPD_parallel,
false, false));
ASSERT_EQ(CBFn->getNumUses(), 2U);
ASSERT_EQ(BFn->getNumUses(), 1U);
ASSERT_TRUE(CBFn->user_back() != CheckedBarrier);
ASSERT_TRUE(isa<CallInst>(CBFn->user_back()));
ASSERT_EQ(CBFn->user_back()->getNumUses(), 0U);
};
auto PrivCB = [&](InsertPointTy, InsertPointTy, Value &V, Value &,
Value *&) -> InsertPointTy {
++NumPrivatizedVars;
llvm_unreachable("No privatization callback call expected!");
};
FunctionType *FakeDestructorTy =
FunctionType::get(Type::getVoidTy(Ctx), {Type::getInt32Ty(Ctx)},
/*isVarArg=*/false);
auto *FakeDestructor = Function::Create(
FakeDestructorTy, Function::ExternalLinkage, "fakeDestructor", M.get());
auto FiniCB = [&](InsertPointTy IP) {
++NumFinalizationPoints;
Builder.restoreIP(IP);
Builder.CreateCall(FakeDestructor,
{Builder.getInt32(NumFinalizationPoints)});
};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
IRBuilder<>::InsertPoint AfterIP =
OMPBuilder.createParallel(Loc, AllocaIP, BodyGenCB, PrivCB, FiniCB,
Builder.CreateIsNotNull(F->arg_begin()),
nullptr, OMP_PROC_BIND_default, true);
EXPECT_EQ(NumBodiesGenerated, 1U);
EXPECT_EQ(NumPrivatizedVars, 0U);
EXPECT_EQ(NumFinalizationPoints, 2U);
EXPECT_EQ(FakeDestructor->getNumUses(), 2U);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
BasicBlock *ExitBB = nullptr;
for (const User *Usr : FakeDestructor->users()) {
const CallInst *CI = dyn_cast<CallInst>(Usr);
ASSERT_EQ(CI->getCalledFunction(), FakeDestructor);
ASSERT_TRUE(isa<BranchInst>(CI->getNextNode()));
ASSERT_EQ(CI->getNextNode()->getNumSuccessors(), 1U);
if (ExitBB)
ASSERT_EQ(CI->getNextNode()->getSuccessor(0), ExitBB);
else
ExitBB = CI->getNextNode()->getSuccessor(0);
ASSERT_EQ(ExitBB->size(), 1U);
if (!isa<ReturnInst>(ExitBB->front())) {
ASSERT_TRUE(isa<BranchInst>(ExitBB->front()));
ASSERT_EQ(cast<BranchInst>(ExitBB->front()).getNumSuccessors(), 1U);
ASSERT_TRUE(isa<ReturnInst>(
cast<BranchInst>(ExitBB->front()).getSuccessor(0)->front()));
}
}
}
TEST_F(OpenMPIRBuilderTest, ParallelForwardAsPointers) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
Type *I32Ty = Type::getInt32Ty(M->getContext());
Type *I32PtrTy = Type::getInt32PtrTy(M->getContext());
Type *StructTy = StructType::get(I32Ty, I32PtrTy);
Type *StructPtrTy = StructTy->getPointerTo();
StructType *ArgStructTy =
StructType::get(I32PtrTy, StructPtrTy, I32PtrTy, StructPtrTy);
Type *VoidTy = Type::getVoidTy(M->getContext());
FunctionCallee RetI32Func = M->getOrInsertFunction("ret_i32", I32Ty);
FunctionCallee TakeI32Func =
M->getOrInsertFunction("take_i32", VoidTy, I32Ty);
FunctionCallee RetI32PtrFunc = M->getOrInsertFunction("ret_i32ptr", I32PtrTy);
FunctionCallee TakeI32PtrFunc =
M->getOrInsertFunction("take_i32ptr", VoidTy, I32PtrTy);
FunctionCallee RetStructFunc = M->getOrInsertFunction("ret_struct", StructTy);
FunctionCallee TakeStructFunc =
M->getOrInsertFunction("take_struct", VoidTy, StructTy);
FunctionCallee RetStructPtrFunc =
M->getOrInsertFunction("ret_structptr", StructPtrTy);
FunctionCallee TakeStructPtrFunc =
M->getOrInsertFunction("take_structPtr", VoidTy, StructPtrTy);
Value *I32Val = Builder.CreateCall(RetI32Func);
Value *I32PtrVal = Builder.CreateCall(RetI32PtrFunc);
Value *StructVal = Builder.CreateCall(RetStructFunc);
Value *StructPtrVal = Builder.CreateCall(RetStructPtrFunc);
Instruction *Internal;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
IRBuilder<>::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
Internal = Builder.CreateCall(TakeI32Func, I32Val);
Builder.CreateCall(TakeI32PtrFunc, I32PtrVal);
Builder.CreateCall(TakeStructFunc, StructVal);
Builder.CreateCall(TakeStructPtrFunc, StructPtrVal);
};
auto PrivCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP, Value &,
Value &Inner, Value *&ReplacementValue) {
ReplacementValue = &Inner;
return CodeGenIP;
};
auto FiniCB = [](InsertPointTy) {};
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
IRBuilder<>::InsertPoint AfterIP =
OMPBuilder.createParallel(Loc, AllocaIP, BodyGenCB, PrivCB, FiniCB,
nullptr, nullptr, OMP_PROC_BIND_default, false);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
Function *OutlinedFn = Internal->getFunction();
Type *Arg2Type = OutlinedFn->getArg(2)->getType();
EXPECT_TRUE(Arg2Type->isPointerTy());
EXPECT_TRUE(
cast<PointerType>(Arg2Type)->isOpaqueOrPointeeTypeMatches(ArgStructTy));
}
TEST_F(OpenMPIRBuilderTest, CanonicalLoopSimple) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Value *TripCount = F->getArg(0);
unsigned NumBodiesGenerated = 0;
auto LoopBodyGenCB = [&](InsertPointTy CodeGenIP, llvm::Value *LC) {
NumBodiesGenerated += 1;
Builder.restoreIP(CodeGenIP);
Value *Cmp = Builder.CreateICmpEQ(LC, TripCount);
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
};
CanonicalLoopInfo *Loop =
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGenCB, TripCount);
Builder.restoreIP(Loop->getAfterIP());
ReturnInst *RetInst = Builder.CreateRetVoid();
OMPBuilder.finalize();
Loop->assertOK();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(NumBodiesGenerated, 1U);
// Verify control flow structure (in addition to Loop->assertOK()).
EXPECT_EQ(Loop->getPreheader()->getSinglePredecessor(), &F->getEntryBlock());
EXPECT_EQ(Loop->getAfter(), Builder.GetInsertBlock());
Instruction *IndVar = Loop->getIndVar();
EXPECT_TRUE(isa<PHINode>(IndVar));
EXPECT_EQ(IndVar->getType(), TripCount->getType());
EXPECT_EQ(IndVar->getParent(), Loop->getHeader());
EXPECT_EQ(Loop->getTripCount(), TripCount);
BasicBlock *Body = Loop->getBody();
Instruction *CmpInst = &Body->getInstList().front();
EXPECT_TRUE(isa<ICmpInst>(CmpInst));
EXPECT_EQ(CmpInst->getOperand(0), IndVar);
BasicBlock *LatchPred = Loop->getLatch()->getSinglePredecessor();
EXPECT_TRUE(llvm::all_of(successors(Body), [=](BasicBlock *SuccBB) {
return SuccBB->getSingleSuccessor() == LatchPred;
}));
EXPECT_EQ(&Loop->getAfter()->front(), RetInst);
}
TEST_F(OpenMPIRBuilderTest, CanonicalLoopBounds) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
// Check the trip count is computed correctly. We generate the canonical loop
// but rely on the IRBuilder's constant folder to compute the final result
// since all inputs are constant. To verify overflow situations, limit the
// trip count / loop counter widths to 16 bits.
auto EvalTripCount = [&](int64_t Start, int64_t Stop, int64_t Step,
bool IsSigned, bool InclusiveStop) -> int64_t {
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *LCTy = Type::getInt16Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, Start);
Value *StopVal = ConstantInt::get(LCTy, Stop);
Value *StepVal = ConstantInt::get(LCTy, Step);
auto LoopBodyGenCB = [&](InsertPointTy CodeGenIP, llvm::Value *LC) {};
CanonicalLoopInfo *Loop =
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGenCB, StartVal, StopVal,
StepVal, IsSigned, InclusiveStop);
Loop->assertOK();
Builder.restoreIP(Loop->getAfterIP());
Value *TripCount = Loop->getTripCount();
return cast<ConstantInt>(TripCount)->getValue().getZExtValue();
};
EXPECT_EQ(EvalTripCount(0, 0, 1, false, false), 0);
EXPECT_EQ(EvalTripCount(0, 1, 2, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 42, 1, false, false), 42);
EXPECT_EQ(EvalTripCount(0, 42, 2, false, false), 21);
EXPECT_EQ(EvalTripCount(21, 42, 1, false, false), 21);
EXPECT_EQ(EvalTripCount(0, 5, 5, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 9, 5, false, false), 2);
EXPECT_EQ(EvalTripCount(0, 11, 5, false, false), 3);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 1, false, false), 0xFFFF);
EXPECT_EQ(EvalTripCount(0xFFFF, 0, 1, false, false), 0);
EXPECT_EQ(EvalTripCount(0xFFFE, 0xFFFF, 1, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 0x100, false, false), 0x100);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 0xFFFF, false, false), 1);
EXPECT_EQ(EvalTripCount(0, 6, 5, false, false), 2);
EXPECT_EQ(EvalTripCount(0, 0xFFFF, 0xFFFE, false, false), 2);
EXPECT_EQ(EvalTripCount(0, 0, 1, false, true), 1);
EXPECT_EQ(EvalTripCount(0, 0, 0xFFFF, false, true), 1);
EXPECT_EQ(EvalTripCount(0, 0xFFFE, 1, false, true), 0xFFFF);
EXPECT_EQ(EvalTripCount(0, 0xFFFE, 2, false, true), 0x8000);
EXPECT_EQ(EvalTripCount(0, 0, -1, true, false), 0);
EXPECT_EQ(EvalTripCount(0, 1, -1, true, true), 0);
EXPECT_EQ(EvalTripCount(20, 5, -5, true, false), 3);
EXPECT_EQ(EvalTripCount(20, 5, -5, true, true), 4);
EXPECT_EQ(EvalTripCount(-4, -2, 2, true, false), 1);
EXPECT_EQ(EvalTripCount(-4, -3, 2, true, false), 1);
EXPECT_EQ(EvalTripCount(-4, -2, 2, true, true), 2);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0, 1, true, false), 0x8000);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0, 1, true, true), 0x8001);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0x7FFF, 1, true, false), 0xFFFF);
EXPECT_EQ(EvalTripCount(INT16_MIN + 1, 0x7FFF, 1, true, true), 0xFFFF);
EXPECT_EQ(EvalTripCount(INT16_MIN, 0, 0x7FFF, true, false), 2);
EXPECT_EQ(EvalTripCount(0x7FFF, 0, -1, true, false), 0x7FFF);
EXPECT_EQ(EvalTripCount(0, INT16_MIN, -1, true, false), 0x8000);
EXPECT_EQ(EvalTripCount(0, INT16_MIN, -16, true, false), 0x800);
EXPECT_EQ(EvalTripCount(0x7FFF, INT16_MIN, -1, true, false), 0xFFFF);
EXPECT_EQ(EvalTripCount(0x7FFF, 1, INT16_MIN, true, false), 1);
EXPECT_EQ(EvalTripCount(0x7FFF, -1, INT16_MIN, true, true), 2);
// Finalize the function and verify it.
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CollapseNestedLoops) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
Type *LCTy = F->getArg(0)->getType();
Constant *One = ConstantInt::get(LCTy, 1);
Constant *Two = ConstantInt::get(LCTy, 2);
Value *OuterTripCount =
Builder.CreateAdd(F->getArg(0), Two, "tripcount.outer");
Value *InnerTripCount =
Builder.CreateAdd(F->getArg(0), One, "tripcount.inner");
// Fix an insertion point for ComputeIP.
BasicBlock *LoopNextEnter =
BasicBlock::Create(M->getContext(), "loopnest.enter", F,
Builder.GetInsertBlock()->getNextNode());
BranchInst *EnterBr = Builder.CreateBr(LoopNextEnter);
InsertPointTy ComputeIP{EnterBr->getParent(), EnterBr->getIterator()};
Builder.SetInsertPoint(LoopNextEnter);
OpenMPIRBuilder::LocationDescription OuterLoc(Builder.saveIP(), DL);
CanonicalLoopInfo *InnerLoop = nullptr;
CallInst *InbetweenLead = nullptr;
CallInst *InbetweenTrail = nullptr;
CallInst *Call = nullptr;
auto OuterLoopBodyGenCB = [&](InsertPointTy OuterCodeGenIP, Value *OuterLC) {
Builder.restoreIP(OuterCodeGenIP);
InbetweenLead =
createPrintfCall(Builder, "In-between lead i=%d\\n", {OuterLC});
auto InnerLoopBodyGenCB = [&](InsertPointTy InnerCodeGenIP,
Value *InnerLC) {
Builder.restoreIP(InnerCodeGenIP);
Call = createPrintfCall(Builder, "body i=%d j=%d\\n", {OuterLC, InnerLC});
};
InnerLoop = OMPBuilder.createCanonicalLoop(
Builder.saveIP(), InnerLoopBodyGenCB, InnerTripCount, "inner");
Builder.restoreIP(InnerLoop->getAfterIP());
InbetweenTrail =
createPrintfCall(Builder, "In-between trail i=%d\\n", {OuterLC});
};
CanonicalLoopInfo *OuterLoop = OMPBuilder.createCanonicalLoop(
OuterLoc, OuterLoopBodyGenCB, OuterTripCount, "outer");
// Finish the function.
Builder.restoreIP(OuterLoop->getAfterIP());
Builder.CreateRetVoid();
CanonicalLoopInfo *Collapsed =
OMPBuilder.collapseLoops(DL, {OuterLoop, InnerLoop}, ComputeIP);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
// Verify control flow and BB order.
BasicBlock *RefOrder[] = {
Collapsed->getPreheader(), Collapsed->getHeader(),
Collapsed->getCond(), Collapsed->getBody(),
InbetweenLead->getParent(), Call->getParent(),
InbetweenTrail->getParent(), Collapsed->getLatch(),
Collapsed->getExit(), Collapsed->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
// Verify the total trip count.
auto *TripCount = cast<MulOperator>(Collapsed->getTripCount());
EXPECT_EQ(TripCount->getOperand(0), OuterTripCount);
EXPECT_EQ(TripCount->getOperand(1), InnerTripCount);
// Verify the changed indvar.
auto *OuterIV = cast<BinaryOperator>(Call->getOperand(1));
EXPECT_EQ(OuterIV->getOpcode(), Instruction::UDiv);
EXPECT_EQ(OuterIV->getParent(), Collapsed->getBody());
EXPECT_EQ(OuterIV->getOperand(1), InnerTripCount);
EXPECT_EQ(OuterIV->getOperand(0), Collapsed->getIndVar());
auto *InnerIV = cast<BinaryOperator>(Call->getOperand(2));
EXPECT_EQ(InnerIV->getOpcode(), Instruction::URem);
EXPECT_EQ(InnerIV->getParent(), Collapsed->getBody());
EXPECT_EQ(InnerIV->getOperand(0), Collapsed->getIndVar());
EXPECT_EQ(InnerIV->getOperand(1), InnerTripCount);
EXPECT_EQ(InbetweenLead->getOperand(1), OuterIV);
EXPECT_EQ(InbetweenTrail->getOperand(1), OuterIV);
}
TEST_F(OpenMPIRBuilderTest, TileSingleLoop) {
OpenMPIRBuilder OMPBuilder(*M);
CallInst *Call;
BasicBlock *BodyCode;
CanonicalLoopInfo *Loop =
buildSingleLoopFunction(DL, OMPBuilder, 32, &Call, &BodyCode);
Instruction *OrigIndVar = Loop->getIndVar();
EXPECT_EQ(Call->getOperand(1), OrigIndVar);
// Tile the loop.
Constant *TileSize = ConstantInt::get(Loop->getIndVarType(), APInt(32, 7));
std::vector<CanonicalLoopInfo *> GenLoops =
OMPBuilder.tileLoops(DL, {Loop}, {TileSize});
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(GenLoops.size(), 2u);
CanonicalLoopInfo *Floor = GenLoops[0];
CanonicalLoopInfo *Tile = GenLoops[1];
BasicBlock *RefOrder[] = {
Floor->getPreheader(), Floor->getHeader(), Floor->getCond(),
Floor->getBody(), Tile->getPreheader(), Tile->getHeader(),
Tile->getCond(), Tile->getBody(), BodyCode,
Tile->getLatch(), Tile->getExit(), Tile->getAfter(),
Floor->getLatch(), Floor->getExit(), Floor->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
// Check the induction variable.
EXPECT_EQ(Call->getParent(), BodyCode);
auto *Shift = cast<AddOperator>(Call->getOperand(1));
EXPECT_EQ(cast<Instruction>(Shift)->getParent(), Tile->getBody());
EXPECT_EQ(Shift->getOperand(1), Tile->getIndVar());
auto *Scale = cast<MulOperator>(Shift->getOperand(0));
EXPECT_EQ(cast<Instruction>(Scale)->getParent(), Tile->getBody());
EXPECT_EQ(Scale->getOperand(0), TileSize);
EXPECT_EQ(Scale->getOperand(1), Floor->getIndVar());
}
TEST_F(OpenMPIRBuilderTest, TileNestedLoops) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Value *TripCount = F->getArg(0);
Type *LCTy = TripCount->getType();
BasicBlock *BodyCode = nullptr;
CanonicalLoopInfo *InnerLoop = nullptr;
auto OuterLoopBodyGenCB = [&](InsertPointTy OuterCodeGenIP,
llvm::Value *OuterLC) {
auto InnerLoopBodyGenCB = [&](InsertPointTy InnerCodeGenIP,
llvm::Value *InnerLC) {
Builder.restoreIP(InnerCodeGenIP);
BodyCode = Builder.GetInsertBlock();
// Add something that consumes the induction variables to the body.
createPrintfCall(Builder, "i=%d j=%d\\n", {OuterLC, InnerLC});
};
InnerLoop = OMPBuilder.createCanonicalLoop(
OuterCodeGenIP, InnerLoopBodyGenCB, TripCount, "inner");
};
CanonicalLoopInfo *OuterLoop = OMPBuilder.createCanonicalLoop(
Loc, OuterLoopBodyGenCB, TripCount, "outer");
// Finalize the function.
Builder.restoreIP(OuterLoop->getAfterIP());
Builder.CreateRetVoid();
// Tile to loop nest.
Constant *OuterTileSize = ConstantInt::get(LCTy, APInt(32, 11));
Constant *InnerTileSize = ConstantInt::get(LCTy, APInt(32, 7));
std::vector<CanonicalLoopInfo *> GenLoops = OMPBuilder.tileLoops(
DL, {OuterLoop, InnerLoop}, {OuterTileSize, InnerTileSize});
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(GenLoops.size(), 4u);
CanonicalLoopInfo *Floor1 = GenLoops[0];
CanonicalLoopInfo *Floor2 = GenLoops[1];
CanonicalLoopInfo *Tile1 = GenLoops[2];
CanonicalLoopInfo *Tile2 = GenLoops[3];
BasicBlock *RefOrder[] = {
Floor1->getPreheader(),
Floor1->getHeader(),
Floor1->getCond(),
Floor1->getBody(),
Floor2->getPreheader(),
Floor2->getHeader(),
Floor2->getCond(),
Floor2->getBody(),
Tile1->getPreheader(),
Tile1->getHeader(),
Tile1->getCond(),
Tile1->getBody(),
Tile2->getPreheader(),
Tile2->getHeader(),
Tile2->getCond(),
Tile2->getBody(),
BodyCode,
Tile2->getLatch(),
Tile2->getExit(),
Tile2->getAfter(),
Tile1->getLatch(),
Tile1->getExit(),
Tile1->getAfter(),
Floor2->getLatch(),
Floor2->getExit(),
Floor2->getAfter(),
Floor1->getLatch(),
Floor1->getExit(),
Floor1->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
}
TEST_F(OpenMPIRBuilderTest, TileNestedLoopsWithBounds) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
Value *TripCount = F->getArg(0);
Type *LCTy = TripCount->getType();
Value *OuterStartVal = ConstantInt::get(LCTy, 2);
Value *OuterStopVal = TripCount;
Value *OuterStep = ConstantInt::get(LCTy, 5);
Value *InnerStartVal = ConstantInt::get(LCTy, 13);
Value *InnerStopVal = TripCount;
Value *InnerStep = ConstantInt::get(LCTy, 3);
// Fix an insertion point for ComputeIP.
BasicBlock *LoopNextEnter =
BasicBlock::Create(M->getContext(), "loopnest.enter", F,
Builder.GetInsertBlock()->getNextNode());
BranchInst *EnterBr = Builder.CreateBr(LoopNextEnter);
InsertPointTy ComputeIP{EnterBr->getParent(), EnterBr->getIterator()};
InsertPointTy LoopIP{LoopNextEnter, LoopNextEnter->begin()};
OpenMPIRBuilder::LocationDescription Loc({LoopIP, DL});
BasicBlock *BodyCode = nullptr;
CanonicalLoopInfo *InnerLoop = nullptr;
CallInst *Call = nullptr;
auto OuterLoopBodyGenCB = [&](InsertPointTy OuterCodeGenIP,
llvm::Value *OuterLC) {
auto InnerLoopBodyGenCB = [&](InsertPointTy InnerCodeGenIP,
llvm::Value *InnerLC) {
Builder.restoreIP(InnerCodeGenIP);
BodyCode = Builder.GetInsertBlock();
// Add something that consumes the induction variable to the body.
Call = createPrintfCall(Builder, "i=%d j=%d\\n", {OuterLC, InnerLC});
};
InnerLoop = OMPBuilder.createCanonicalLoop(
OuterCodeGenIP, InnerLoopBodyGenCB, InnerStartVal, InnerStopVal,
InnerStep, false, false, ComputeIP, "inner");
};
CanonicalLoopInfo *OuterLoop = OMPBuilder.createCanonicalLoop(
Loc, OuterLoopBodyGenCB, OuterStartVal, OuterStopVal, OuterStep, false,
false, ComputeIP, "outer");
// Finalize the function
Builder.restoreIP(OuterLoop->getAfterIP());
Builder.CreateRetVoid();
// Tile the loop nest.
Constant *TileSize0 = ConstantInt::get(LCTy, APInt(32, 11));
Constant *TileSize1 = ConstantInt::get(LCTy, APInt(32, 7));
std::vector<CanonicalLoopInfo *> GenLoops =
OMPBuilder.tileLoops(DL, {OuterLoop, InnerLoop}, {TileSize0, TileSize1});
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(GenLoops.size(), 4u);
CanonicalLoopInfo *Floor0 = GenLoops[0];
CanonicalLoopInfo *Floor1 = GenLoops[1];
CanonicalLoopInfo *Tile0 = GenLoops[2];
CanonicalLoopInfo *Tile1 = GenLoops[3];
BasicBlock *RefOrder[] = {
Floor0->getPreheader(),
Floor0->getHeader(),
Floor0->getCond(),
Floor0->getBody(),
Floor1->getPreheader(),
Floor1->getHeader(),
Floor1->getCond(),
Floor1->getBody(),
Tile0->getPreheader(),
Tile0->getHeader(),
Tile0->getCond(),
Tile0->getBody(),
Tile1->getPreheader(),
Tile1->getHeader(),
Tile1->getCond(),
Tile1->getBody(),
BodyCode,
Tile1->getLatch(),
Tile1->getExit(),
Tile1->getAfter(),
Tile0->getLatch(),
Tile0->getExit(),
Tile0->getAfter(),
Floor1->getLatch(),
Floor1->getExit(),
Floor1->getAfter(),
Floor0->getLatch(),
Floor0->getExit(),
Floor0->getAfter(),
};
EXPECT_TRUE(verifyDFSOrder(F, RefOrder));
EXPECT_TRUE(verifyListOrder(F, RefOrder));
EXPECT_EQ(Call->getParent(), BodyCode);
auto *RangeShift0 = cast<AddOperator>(Call->getOperand(1));
EXPECT_EQ(RangeShift0->getOperand(1), OuterStartVal);
auto *RangeScale0 = cast<MulOperator>(RangeShift0->getOperand(0));
EXPECT_EQ(RangeScale0->getOperand(1), OuterStep);
auto *TileShift0 = cast<AddOperator>(RangeScale0->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileShift0)->getParent(), Tile1->getBody());
EXPECT_EQ(TileShift0->getOperand(1), Tile0->getIndVar());
auto *TileScale0 = cast<MulOperator>(TileShift0->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileScale0)->getParent(), Tile1->getBody());
EXPECT_EQ(TileScale0->getOperand(0), TileSize0);
EXPECT_EQ(TileScale0->getOperand(1), Floor0->getIndVar());
auto *RangeShift1 = cast<AddOperator>(Call->getOperand(2));
EXPECT_EQ(cast<Instruction>(RangeShift1)->getParent(), BodyCode);
EXPECT_EQ(RangeShift1->getOperand(1), InnerStartVal);
auto *RangeScale1 = cast<MulOperator>(RangeShift1->getOperand(0));
EXPECT_EQ(cast<Instruction>(RangeScale1)->getParent(), BodyCode);
EXPECT_EQ(RangeScale1->getOperand(1), InnerStep);
auto *TileShift1 = cast<AddOperator>(RangeScale1->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileShift1)->getParent(), Tile1->getBody());
EXPECT_EQ(TileShift1->getOperand(1), Tile1->getIndVar());
auto *TileScale1 = cast<MulOperator>(TileShift1->getOperand(0));
EXPECT_EQ(cast<Instruction>(TileScale1)->getParent(), Tile1->getBody());
EXPECT_EQ(TileScale1->getOperand(0), TileSize1);
EXPECT_EQ(TileScale1->getOperand(1), Floor1->getIndVar());
}
TEST_F(OpenMPIRBuilderTest, TileSingleLoopCounts) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
// Create a loop, tile it, and extract its trip count. All input values are
// constant and IRBuilder evaluates all-constant arithmetic inplace, such that
// the floor trip count itself will be a ConstantInt. Unfortunately we cannot
// do the same for the tile loop.
auto GetFloorCount = [&](int64_t Start, int64_t Stop, int64_t Step,
bool IsSigned, bool InclusiveStop,
int64_t TileSize) -> uint64_t {
OpenMPIRBuilder::LocationDescription Loc(Builder.saveIP(), DL);
Type *LCTy = Type::getInt16Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, Start);
Value *StopVal = ConstantInt::get(LCTy, Stop);
Value *StepVal = ConstantInt::get(LCTy, Step);
// Generate a loop.
auto LoopBodyGenCB = [&](InsertPointTy CodeGenIP, llvm::Value *LC) {};
CanonicalLoopInfo *Loop =
OMPBuilder.createCanonicalLoop(Loc, LoopBodyGenCB, StartVal, StopVal,
StepVal, IsSigned, InclusiveStop);
InsertPointTy AfterIP = Loop->getAfterIP();
// Tile the loop.
Value *TileSizeVal = ConstantInt::get(LCTy, TileSize);
std::vector<CanonicalLoopInfo *> GenLoops =
OMPBuilder.tileLoops(Loc.DL, {Loop}, {TileSizeVal});
// Set the insertion pointer to after loop, where the next loop will be
// emitted.
Builder.restoreIP(AfterIP);
// Extract the trip count.
CanonicalLoopInfo *FloorLoop = GenLoops[0];
Value *FloorTripCount = FloorLoop->getTripCount();
return cast<ConstantInt>(FloorTripCount)->getValue().getZExtValue();
};
// Empty iteration domain.
EXPECT_EQ(GetFloorCount(0, 0, 1, false, false, 7), 0u);
EXPECT_EQ(GetFloorCount(0, -1, 1, false, true, 7), 0u);
EXPECT_EQ(GetFloorCount(-1, -1, -1, true, false, 7), 0u);
EXPECT_EQ(GetFloorCount(-1, 0, -1, true, true, 7), 0u);
EXPECT_EQ(GetFloorCount(-1, -1, 3, true, false, 7), 0u);
// Only complete tiles.
EXPECT_EQ(GetFloorCount(0, 14, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 14, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(1, 15, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, -14, -1, true, false, 7), 2u);
EXPECT_EQ(GetFloorCount(-1, -14, -1, true, true, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 3 * 7 * 2, 3, false, false, 7), 2u);
// Only a partial tile.
EXPECT_EQ(GetFloorCount(0, 1, 1, false, false, 7), 1u);
EXPECT_EQ(GetFloorCount(0, 6, 1, false, false, 7), 1u);
EXPECT_EQ(GetFloorCount(-1, 1, 3, true, false, 7), 1u);
EXPECT_EQ(GetFloorCount(-1, -2, -1, true, false, 7), 1u);
EXPECT_EQ(GetFloorCount(0, 2, 3, false, false, 7), 1u);
// Complete and partial tiles.
EXPECT_EQ(GetFloorCount(0, 13, 1, false, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 15, 1, false, false, 7), 3u);
EXPECT_EQ(GetFloorCount(-1, -14, -1, true, false, 7), 2u);
EXPECT_EQ(GetFloorCount(0, 3 * 7 * 5 - 1, 3, false, false, 7), 5u);
EXPECT_EQ(GetFloorCount(-1, -3 * 7 * 5, -3, true, false, 7), 5u);
// Close to 16-bit integer range.
EXPECT_EQ(GetFloorCount(0, 0xFFFF, 1, false, false, 1), 0xFFFFu);
EXPECT_EQ(GetFloorCount(0, 0xFFFF, 1, false, false, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(0, 0xFFFE, 1, false, true, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(-0x8000, 0x7FFF, 1, true, false, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(-0x7FFF, 0x7FFF, 1, true, true, 7), 0xFFFFu / 7 + 1);
EXPECT_EQ(GetFloorCount(0, 0xFFFE, 1, false, false, 0xFFFF), 1u);
EXPECT_EQ(GetFloorCount(-0x8000, 0x7FFF, 1, true, false, 0xFFFF), 1u);
// Finalize the function.
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, ApplySimd) {
OpenMPIRBuilder OMPBuilder(*M);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
// Simd-ize the loop.
OMPBuilder.applySimd(DL, CLI);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(findStringMetadataForLoop(L, "llvm.loop.parallel_accesses"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.vectorize.enable"));
// Check for llvm.access.group metadata attached to the printf
// function in the loop body.
BasicBlock *LoopBody = CLI->getBody();
EXPECT_TRUE(any_of(*LoopBody, [](Instruction &I) {
return I.getMetadata("llvm.access.group") != nullptr;
}));
}
TEST_F(OpenMPIRBuilderTest, UnrollLoopFull) {
OpenMPIRBuilder OMPBuilder(*M);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
// Unroll the loop.
OMPBuilder.unrollLoopFull(DL, CLI);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.unroll.enable"));
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.unroll.full"));
}
TEST_F(OpenMPIRBuilderTest, UnrollLoopPartial) {
OpenMPIRBuilder OMPBuilder(*M);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
// Unroll the loop.
CanonicalLoopInfo *UnrolledLoop = nullptr;
OMPBuilder.unrollLoopPartial(DL, CLI, 5, &UnrolledLoop);
ASSERT_NE(UnrolledLoop, nullptr);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
UnrolledLoop->assertOK();
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *Outer = TopLvl.front();
EXPECT_EQ(Outer->getHeader(), UnrolledLoop->getHeader());
EXPECT_EQ(Outer->getLoopLatch(), UnrolledLoop->getLatch());
EXPECT_EQ(Outer->getExitingBlock(), UnrolledLoop->getCond());
EXPECT_EQ(Outer->getExitBlock(), UnrolledLoop->getExit());
EXPECT_EQ(Outer->getSubLoops().size(), 1u);
Loop *Inner = Outer->getSubLoops().front();
EXPECT_TRUE(getBooleanLoopAttribute(Inner, "llvm.loop.unroll.enable"));
EXPECT_EQ(getIntLoopAttribute(Inner, "llvm.loop.unroll.count"), 5);
}
TEST_F(OpenMPIRBuilderTest, UnrollLoopHeuristic) {
OpenMPIRBuilder OMPBuilder(*M);
CanonicalLoopInfo *CLI = buildSingleLoopFunction(DL, OMPBuilder, 32);
// Unroll the loop.
OMPBuilder.unrollLoopHeuristic(DL, CLI);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
PassBuilder PB;
FunctionAnalysisManager FAM;
PB.registerFunctionAnalyses(FAM);
LoopInfo &LI = FAM.getResult<LoopAnalysis>(*F);
const std::vector<Loop *> &TopLvl = LI.getTopLevelLoops();
EXPECT_EQ(TopLvl.size(), 1u);
Loop *L = TopLvl.front();
EXPECT_TRUE(getBooleanLoopAttribute(L, "llvm.loop.unroll.enable"));
}
TEST_F(OpenMPIRBuilderTest, StaticWorkShareLoop) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *LCTy = Type::getInt32Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, 10);
Value *StopVal = ConstantInt::get(LCTy, 52);
Value *StepVal = ConstantInt::get(LCTy, 2);
auto LoopBodyGen = [&](InsertPointTy, llvm::Value *) {};
CanonicalLoopInfo *CLI = OMPBuilder.createCanonicalLoop(
Loc, LoopBodyGen, StartVal, StopVal, StepVal,
/*IsSigned=*/false, /*InclusiveStop=*/false);
BasicBlock *Preheader = CLI->getPreheader();
BasicBlock *Body = CLI->getBody();
Value *IV = CLI->getIndVar();
BasicBlock *ExitBlock = CLI->getExit();
Builder.SetInsertPoint(BB, BB->getFirstInsertionPt());
InsertPointTy AllocaIP = Builder.saveIP();
OMPBuilder.applyWorkshareLoop(DL, CLI, AllocaIP, /*NeedsBarrier=*/true,
OMP_SCHEDULE_Static);
BasicBlock *Cond = Body->getSinglePredecessor();
Instruction *Cmp = &*Cond->begin();
Value *TripCount = Cmp->getOperand(1);
auto AllocaIter = BB->begin();
ASSERT_GE(std::distance(BB->begin(), BB->end()), 4);
AllocaInst *PLastIter = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PLowerBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PUpperBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PStride = dyn_cast<AllocaInst>(&*(AllocaIter++));
EXPECT_NE(PLastIter, nullptr);
EXPECT_NE(PLowerBound, nullptr);
EXPECT_NE(PUpperBound, nullptr);
EXPECT_NE(PStride, nullptr);
auto PreheaderIter = Preheader->begin();
ASSERT_GE(std::distance(Preheader->begin(), Preheader->end()), 7);
StoreInst *LowerBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *UpperBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *StrideStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
ASSERT_NE(LowerBoundStore, nullptr);
ASSERT_NE(UpperBoundStore, nullptr);
ASSERT_NE(StrideStore, nullptr);
auto *OrigLowerBound =
dyn_cast<ConstantInt>(LowerBoundStore->getValueOperand());
auto *OrigUpperBound =
dyn_cast<ConstantInt>(UpperBoundStore->getValueOperand());
auto *OrigStride = dyn_cast<ConstantInt>(StrideStore->getValueOperand());
ASSERT_NE(OrigLowerBound, nullptr);
ASSERT_NE(OrigUpperBound, nullptr);
ASSERT_NE(OrigStride, nullptr);
EXPECT_EQ(OrigLowerBound->getValue(), 0);
EXPECT_EQ(OrigUpperBound->getValue(), 20);
EXPECT_EQ(OrigStride->getValue(), 1);
// Check that the loop IV is updated to account for the lower bound returned
// by the OpenMP runtime call.
BinaryOperator *Add = dyn_cast<BinaryOperator>(&Body->front());
EXPECT_EQ(Add->getOperand(0), IV);
auto *LoadedLowerBound = dyn_cast<LoadInst>(Add->getOperand(1));
ASSERT_NE(LoadedLowerBound, nullptr);
EXPECT_EQ(LoadedLowerBound->getPointerOperand(), PLowerBound);
// Check that the trip count is updated to account for the lower and upper
// bounds return by the OpenMP runtime call.
auto *AddOne = dyn_cast<Instruction>(TripCount);
ASSERT_NE(AddOne, nullptr);
ASSERT_TRUE(AddOne->isBinaryOp());
auto *One = dyn_cast<ConstantInt>(AddOne->getOperand(1));
ASSERT_NE(One, nullptr);
EXPECT_EQ(One->getValue(), 1);
auto *Difference = dyn_cast<Instruction>(AddOne->getOperand(0));
ASSERT_NE(Difference, nullptr);
ASSERT_TRUE(Difference->isBinaryOp());
EXPECT_EQ(Difference->getOperand(1), LoadedLowerBound);
auto *LoadedUpperBound = dyn_cast<LoadInst>(Difference->getOperand(0));
ASSERT_NE(LoadedUpperBound, nullptr);
EXPECT_EQ(LoadedUpperBound->getPointerOperand(), PUpperBound);
// The original loop iterator should only be used in the condition, in the
// increment and in the statement that adds the lower bound to it.
EXPECT_EQ(std::distance(IV->use_begin(), IV->use_end()), 3);
// The exit block should contain the "fini" call and the barrier call,
// plus the call to obtain the thread ID.
size_t NumCallsInExitBlock =
count_if(*ExitBlock, [](Instruction &I) { return isa<CallInst>(I); });
EXPECT_EQ(NumCallsInExitBlock, 3u);
}
TEST_P(OpenMPIRBuilderTestWithIVBits, StaticChunkedWorkshareLoop) {
unsigned IVBits = GetParam();
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
BasicBlock *Body;
CallInst *Call;
CanonicalLoopInfo *CLI =
buildSingleLoopFunction(DL, OMPBuilder, IVBits, &Call, &Body);
Instruction *OrigIndVar = CLI->getIndVar();
EXPECT_EQ(Call->getOperand(1), OrigIndVar);
Type *LCTy = Type::getInt32Ty(Ctx);
Value *ChunkSize = ConstantInt::get(LCTy, 5);
InsertPointTy AllocaIP{&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt()};
OMPBuilder.applyWorkshareLoop(DL, CLI, AllocaIP, /*NeedsBarrier=*/true,
OMP_SCHEDULE_Static, ChunkSize);
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
BasicBlock *Entry = &F->getEntryBlock();
BasicBlock *Preheader = Entry->getSingleSuccessor();
BasicBlock *DispatchPreheader = Preheader->getSingleSuccessor();
BasicBlock *DispatchHeader = DispatchPreheader->getSingleSuccessor();
BasicBlock *DispatchCond = DispatchHeader->getSingleSuccessor();
BasicBlock *DispatchBody = succ_begin(DispatchCond)[0];
BasicBlock *DispatchExit = succ_begin(DispatchCond)[1];
BasicBlock *DispatchAfter = DispatchExit->getSingleSuccessor();
BasicBlock *Return = DispatchAfter->getSingleSuccessor();
BasicBlock *ChunkPreheader = DispatchBody->getSingleSuccessor();
BasicBlock *ChunkHeader = ChunkPreheader->getSingleSuccessor();
BasicBlock *ChunkCond = ChunkHeader->getSingleSuccessor();
BasicBlock *ChunkBody = succ_begin(ChunkCond)[0];
BasicBlock *ChunkExit = succ_begin(ChunkCond)[1];
BasicBlock *ChunkInc = ChunkBody->getSingleSuccessor();
BasicBlock *ChunkAfter = ChunkExit->getSingleSuccessor();
BasicBlock *DispatchInc = ChunkAfter;
EXPECT_EQ(ChunkBody, Body);
EXPECT_EQ(ChunkInc->getSingleSuccessor(), ChunkHeader);
EXPECT_EQ(DispatchInc->getSingleSuccessor(), DispatchHeader);
EXPECT_TRUE(isa<ReturnInst>(Return->front()));
Value *NewIV = Call->getOperand(1);
EXPECT_EQ(NewIV->getType()->getScalarSizeInBits(), IVBits);
CallInst *InitCall = findSingleCall(
F,
(IVBits > 32) ? omp::RuntimeFunction::OMPRTL___kmpc_for_static_init_8u
: omp::RuntimeFunction::OMPRTL___kmpc_for_static_init_4u,
OMPBuilder);
EXPECT_EQ(InitCall->getParent(), Preheader);
EXPECT_EQ(cast<ConstantInt>(InitCall->getArgOperand(2))->getSExtValue(), 33);
EXPECT_EQ(cast<ConstantInt>(InitCall->getArgOperand(7))->getSExtValue(), 1);
EXPECT_EQ(cast<ConstantInt>(InitCall->getArgOperand(8))->getSExtValue(), 5);
CallInst *FiniCall = findSingleCall(
F, omp::RuntimeFunction::OMPRTL___kmpc_for_static_fini, OMPBuilder);
EXPECT_EQ(FiniCall->getParent(), DispatchExit);
CallInst *BarrierCall = findSingleCall(
F, omp::RuntimeFunction::OMPRTL___kmpc_barrier, OMPBuilder);
EXPECT_EQ(BarrierCall->getParent(), DispatchExit);
}
INSTANTIATE_TEST_SUITE_P(IVBits, OpenMPIRBuilderTestWithIVBits,
::testing::Values(8, 16, 32, 64));
TEST_P(OpenMPIRBuilderTestWithParams, DynamicWorkShareLoop) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
omp::OMPScheduleType SchedType = GetParam();
uint32_t ChunkSize = 1;
switch (SchedType & ~OMPScheduleType::ModifierMask) {
case omp::OMPScheduleType::BaseDynamicChunked:
case omp::OMPScheduleType::BaseGuidedChunked:
ChunkSize = 7;
break;
case omp::OMPScheduleType::BaseAuto:
case omp::OMPScheduleType::BaseRuntime:
ChunkSize = 1;
break;
default:
assert(0 && "unknown type for this test");
break;
}
Type *LCTy = Type::getInt32Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, 10);
Value *StopVal = ConstantInt::get(LCTy, 52);
Value *StepVal = ConstantInt::get(LCTy, 2);
Value *ChunkVal =
(ChunkSize == 1) ? nullptr : ConstantInt::get(LCTy, ChunkSize);
auto LoopBodyGen = [&](InsertPointTy, llvm::Value *) {};
CanonicalLoopInfo *CLI = OMPBuilder.createCanonicalLoop(
Loc, LoopBodyGen, StartVal, StopVal, StepVal,
/*IsSigned=*/false, /*InclusiveStop=*/false);
Builder.SetInsertPoint(BB, BB->getFirstInsertionPt());
InsertPointTy AllocaIP = Builder.saveIP();
// Collect all the info from CLI, as it isn't usable after the call to
// createDynamicWorkshareLoop.
InsertPointTy AfterIP = CLI->getAfterIP();
BasicBlock *Preheader = CLI->getPreheader();
BasicBlock *ExitBlock = CLI->getExit();
BasicBlock *LatchBlock = CLI->getLatch();
Value *IV = CLI->getIndVar();
InsertPointTy EndIP = OMPBuilder.applyWorkshareLoop(
DL, CLI, AllocaIP, /*NeedsBarrier=*/true, getSchedKind(SchedType),
ChunkVal, /*Simd=*/false,
(SchedType & omp::OMPScheduleType::ModifierMonotonic) ==
omp::OMPScheduleType::ModifierMonotonic,
(SchedType & omp::OMPScheduleType::ModifierNonmonotonic) ==
omp::OMPScheduleType::ModifierNonmonotonic,
/*Ordered=*/false);
// The returned value should be the "after" point.
ASSERT_EQ(EndIP.getBlock(), AfterIP.getBlock());
ASSERT_EQ(EndIP.getPoint(), AfterIP.getPoint());
auto AllocaIter = BB->begin();
ASSERT_GE(std::distance(BB->begin(), BB->end()), 4);
AllocaInst *PLastIter = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PLowerBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PUpperBound = dyn_cast<AllocaInst>(&*(AllocaIter++));
AllocaInst *PStride = dyn_cast<AllocaInst>(&*(AllocaIter++));
EXPECT_NE(PLastIter, nullptr);
EXPECT_NE(PLowerBound, nullptr);
EXPECT_NE(PUpperBound, nullptr);
EXPECT_NE(PStride, nullptr);
auto PreheaderIter = Preheader->begin();
ASSERT_GE(std::distance(Preheader->begin(), Preheader->end()), 6);
StoreInst *LowerBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *UpperBoundStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
StoreInst *StrideStore = dyn_cast<StoreInst>(&*(PreheaderIter++));
ASSERT_NE(LowerBoundStore, nullptr);
ASSERT_NE(UpperBoundStore, nullptr);
ASSERT_NE(StrideStore, nullptr);
CallInst *ThreadIdCall = dyn_cast<CallInst>(&*(PreheaderIter++));
ASSERT_NE(ThreadIdCall, nullptr);
EXPECT_EQ(ThreadIdCall->getCalledFunction()->getName(),
"__kmpc_global_thread_num");
CallInst *InitCall = dyn_cast<CallInst>(&*PreheaderIter);
ASSERT_NE(InitCall, nullptr);
EXPECT_EQ(InitCall->getCalledFunction()->getName(),
"__kmpc_dispatch_init_4u");
EXPECT_EQ(InitCall->arg_size(), 7U);
EXPECT_EQ(InitCall->getArgOperand(6), ConstantInt::get(LCTy, ChunkSize));
ConstantInt *SchedVal = cast<ConstantInt>(InitCall->getArgOperand(2));
if ((SchedType & OMPScheduleType::MonotonicityMask) ==
OMPScheduleType::None) {
// Implementation is allowed to add default nonmonotonicity flag
EXPECT_EQ(
static_cast<OMPScheduleType>(SchedVal->getValue().getZExtValue()) |
OMPScheduleType::ModifierNonmonotonic,
SchedType | OMPScheduleType::ModifierNonmonotonic);
} else {
EXPECT_EQ(static_cast<OMPScheduleType>(SchedVal->getValue().getZExtValue()),
SchedType);
}
ConstantInt *OrigLowerBound =
dyn_cast<ConstantInt>(LowerBoundStore->getValueOperand());
ConstantInt *OrigUpperBound =
dyn_cast<ConstantInt>(UpperBoundStore->getValueOperand());
ConstantInt *OrigStride =
dyn_cast<ConstantInt>(StrideStore->getValueOperand());
ASSERT_NE(OrigLowerBound, nullptr);
ASSERT_NE(OrigUpperBound, nullptr);
ASSERT_NE(OrigStride, nullptr);
EXPECT_EQ(OrigLowerBound->getValue(), 1);
EXPECT_EQ(OrigUpperBound->getValue(), 21);
EXPECT_EQ(OrigStride->getValue(), 1);
CallInst *FiniCall = dyn_cast<CallInst>(
&*(LatchBlock->getTerminator()->getPrevNonDebugInstruction(true)));
EXPECT_EQ(FiniCall, nullptr);
// The original loop iterator should only be used in the condition, in the
// increment and in the statement that adds the lower bound to it.
EXPECT_EQ(std::distance(IV->use_begin(), IV->use_end()), 3);
// The exit block should contain the barrier call, plus the call to obtain
// the thread ID.
size_t NumCallsInExitBlock =
count_if(*ExitBlock, [](Instruction &I) { return isa<CallInst>(I); });
EXPECT_EQ(NumCallsInExitBlock, 2u);
// Add a termination to our block and check that it is internally consistent.
Builder.restoreIP(EndIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
INSTANTIATE_TEST_SUITE_P(
OpenMPWSLoopSchedulingTypes, OpenMPIRBuilderTestWithParams,
::testing::Values(omp::OMPScheduleType::UnorderedDynamicChunked,
omp::OMPScheduleType::UnorderedGuidedChunked,
omp::OMPScheduleType::UnorderedAuto,
omp::OMPScheduleType::UnorderedRuntime,
omp::OMPScheduleType::UnorderedDynamicChunked |
omp::OMPScheduleType::ModifierMonotonic,
omp::OMPScheduleType::UnorderedDynamicChunked |
omp::OMPScheduleType::ModifierNonmonotonic,
omp::OMPScheduleType::UnorderedGuidedChunked |
omp::OMPScheduleType::ModifierMonotonic,
omp::OMPScheduleType::UnorderedGuidedChunked |
omp::OMPScheduleType::ModifierNonmonotonic,
omp::OMPScheduleType::UnorderedAuto |
omp::OMPScheduleType::ModifierMonotonic,
omp::OMPScheduleType::UnorderedRuntime |
omp::OMPScheduleType::ModifierMonotonic));
TEST_F(OpenMPIRBuilderTest, DynamicWorkShareLoopOrdered) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
uint32_t ChunkSize = 1;
Type *LCTy = Type::getInt32Ty(Ctx);
Value *StartVal = ConstantInt::get(LCTy, 10);
Value *StopVal = ConstantInt::get(LCTy, 52);
Value *StepVal = ConstantInt::get(LCTy, 2);
Value *ChunkVal = ConstantInt::get(LCTy, ChunkSize);
auto LoopBodyGen = [&](InsertPointTy, llvm::Value *) {};
CanonicalLoopInfo *CLI = OMPBuilder.createCanonicalLoop(
Loc, LoopBodyGen, StartVal, StopVal, StepVal,
/*IsSigned=*/false, /*InclusiveStop=*/false);
Builder.SetInsertPoint(BB, BB->getFirstInsertionPt());
InsertPointTy AllocaIP = Builder.saveIP();
// Collect all the info from CLI, as it isn't usable after the call to
// createDynamicWorkshareLoop.
BasicBlock *Preheader = CLI->getPreheader();
BasicBlock *ExitBlock = CLI->getExit();
BasicBlock *LatchBlock = CLI->getLatch();
Value *IV = CLI->getIndVar();
InsertPointTy EndIP = OMPBuilder.applyWorkshareLoop(
DL, CLI, AllocaIP, /*NeedsBarrier=*/true, OMP_SCHEDULE_Static, ChunkVal,
/*HasSimdModifier=*/false, /*HasMonotonicModifier=*/false,
/*HasNonmonotonicModifier=*/false,
/*HasOrderedClause=*/true);
// Add a termination to our block and check that it is internally consistent.
Builder.restoreIP(EndIP);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *InitCall = nullptr;
for (Instruction &EI : *Preheader) {
Instruction *Cur = &EI;
if (isa<CallInst>(Cur)) {
InitCall = cast<CallInst>(Cur);
if (InitCall->getCalledFunction()->getName() == "__kmpc_dispatch_init_4u")
break;
InitCall = nullptr;
}
}
EXPECT_NE(InitCall, nullptr);
EXPECT_EQ(InitCall->arg_size(), 7U);
ConstantInt *SchedVal = cast<ConstantInt>(InitCall->getArgOperand(2));
EXPECT_EQ(SchedVal->getValue(),
static_cast<uint64_t>(OMPScheduleType::OrderedStaticChunked));
CallInst *FiniCall = dyn_cast<CallInst>(
&*(LatchBlock->getTerminator()->getPrevNonDebugInstruction(true)));
ASSERT_NE(FiniCall, nullptr);
EXPECT_EQ(FiniCall->getCalledFunction()->getName(),
"__kmpc_dispatch_fini_4u");
EXPECT_EQ(FiniCall->arg_size(), 2U);
EXPECT_EQ(InitCall->getArgOperand(0), FiniCall->getArgOperand(0));
EXPECT_EQ(InitCall->getArgOperand(1), FiniCall->getArgOperand(1));
// The original loop iterator should only be used in the condition, in the
// increment and in the statement that adds the lower bound to it.
EXPECT_EQ(std::distance(IV->use_begin(), IV->use_end()), 3);
// The exit block should contain the barrier call, plus the call to obtain
// the thread ID.
size_t NumCallsInExitBlock =
count_if(*ExitBlock, [](Instruction &I) { return isa<CallInst>(I); });
EXPECT_EQ(NumCallsInExitBlock, 2u);
}
TEST_F(OpenMPIRBuilderTest, MasterDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
if (AllocaIP.isSet())
Builder.restoreIP(AllocaIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
Builder.restoreIP(OMPBuilder.createMaster(Builder, BodyGenCB, FiniCB));
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *MasterEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(MasterEntryCI->arg_size(), 2U);
EXPECT_EQ(MasterEntryCI->getCalledFunction()->getName(), "__kmpc_master");
EXPECT_TRUE(isa<GlobalVariable>(MasterEntryCI->getArgOperand(0)));
CallInst *MasterEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
MasterEndCI = cast<CallInst>(cur);
if (MasterEndCI->getCalledFunction()->getName() == "__kmpc_end_master")
break;
MasterEndCI = nullptr;
}
}
EXPECT_NE(MasterEndCI, nullptr);
EXPECT_EQ(MasterEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(MasterEndCI->getArgOperand(0)));
EXPECT_EQ(MasterEndCI->getArgOperand(1), MasterEntryCI->getArgOperand(1));
}
TEST_F(OpenMPIRBuilderTest, MaskedDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
if (AllocaIP.isSet())
Builder.restoreIP(AllocaIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
Constant *Filter = ConstantInt::get(Type::getInt32Ty(M->getContext()), 0);
Builder.restoreIP(
OMPBuilder.createMasked(Builder, BodyGenCB, FiniCB, Filter));
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *MaskedEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(MaskedEntryCI->arg_size(), 3U);
EXPECT_EQ(MaskedEntryCI->getCalledFunction()->getName(), "__kmpc_masked");
EXPECT_TRUE(isa<GlobalVariable>(MaskedEntryCI->getArgOperand(0)));
CallInst *MaskedEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
MaskedEndCI = cast<CallInst>(cur);
if (MaskedEndCI->getCalledFunction()->getName() == "__kmpc_end_masked")
break;
MaskedEndCI = nullptr;
}
}
EXPECT_NE(MaskedEndCI, nullptr);
EXPECT_EQ(MaskedEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(MaskedEndCI->getArgOperand(0)));
EXPECT_EQ(MaskedEndCI->getArgOperand(1), MaskedEntryCI->getArgOperand(1));
}
TEST_F(OpenMPIRBuilderTest, CriticalDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
// actual start for bodyCB
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
// body begin
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
BasicBlock *EntryBB = Builder.GetInsertBlock();
Builder.restoreIP(OMPBuilder.createCritical(Builder, BodyGenCB, FiniCB,
"testCRT", nullptr));
CallInst *CriticalEntryCI = nullptr;
for (auto &EI : *EntryBB) {
Instruction *cur = &EI;
if (isa<CallInst>(cur)) {
CriticalEntryCI = cast<CallInst>(cur);
if (CriticalEntryCI->getCalledFunction()->getName() == "__kmpc_critical")
break;
CriticalEntryCI = nullptr;
}
}
EXPECT_NE(CriticalEntryCI, nullptr);
EXPECT_EQ(CriticalEntryCI->arg_size(), 3U);
EXPECT_EQ(CriticalEntryCI->getCalledFunction()->getName(), "__kmpc_critical");
EXPECT_TRUE(isa<GlobalVariable>(CriticalEntryCI->getArgOperand(0)));
CallInst *CriticalEndCI = nullptr;
for (auto &FI : *EntryBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
CriticalEndCI = cast<CallInst>(cur);
if (CriticalEndCI->getCalledFunction()->getName() ==
"__kmpc_end_critical")
break;
CriticalEndCI = nullptr;
}
}
EXPECT_NE(CriticalEndCI, nullptr);
EXPECT_EQ(CriticalEndCI->arg_size(), 3U);
EXPECT_TRUE(isa<GlobalVariable>(CriticalEndCI->getArgOperand(0)));
EXPECT_EQ(CriticalEndCI->getArgOperand(1), CriticalEntryCI->getArgOperand(1));
PointerType *CriticalNamePtrTy =
PointerType::getUnqual(ArrayType::get(Type::getInt32Ty(Ctx), 8));
EXPECT_EQ(CriticalEndCI->getArgOperand(2), CriticalEntryCI->getArgOperand(2));
EXPECT_EQ(CriticalEndCI->getArgOperand(2)->getType(), CriticalNamePtrTy);
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveDependSource) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
LLVMContext &Ctx = M->getContext();
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
InsertPointTy AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
unsigned NumLoops = 2;
SmallVector<Value *, 2> StoreValues;
Type *LCTy = Type::getInt64Ty(Ctx);
StoreValues.emplace_back(ConstantInt::get(LCTy, 1));
StoreValues.emplace_back(ConstantInt::get(LCTy, 2));
// Test for "#omp ordered depend(source)"
Builder.restoreIP(OMPBuilder.createOrderedDepend(Builder, AllocaIP, NumLoops,
StoreValues, ".cnt.addr",
/*IsDependSource=*/true));
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
AllocaInst *AllocInst = dyn_cast<AllocaInst>(&BB->front());
ASSERT_NE(AllocInst, nullptr);
ArrayType *ArrType = dyn_cast<ArrayType>(AllocInst->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), NumLoops);
EXPECT_TRUE(
AllocInst->getAllocatedType()->getArrayElementType()->isIntegerTy(64));
Instruction *IterInst = dyn_cast<Instruction>(AllocInst);
for (unsigned Iter = 0; Iter < NumLoops; Iter++) {
GetElementPtrInst *DependAddrGEPIter =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependAddrGEPIter, nullptr);
EXPECT_EQ(DependAddrGEPIter->getPointerOperand(), AllocInst);
EXPECT_EQ(DependAddrGEPIter->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), Iter);
StoreInst *StoreValue =
dyn_cast<StoreInst>(DependAddrGEPIter->getNextNode());
ASSERT_NE(StoreValue, nullptr);
EXPECT_EQ(StoreValue->getValueOperand(), StoreValues[Iter]);
EXPECT_EQ(StoreValue->getPointerOperand(), DependAddrGEPIter);
EXPECT_EQ(StoreValue->getAlign(), Align(8));
IterInst = dyn_cast<Instruction>(StoreValue);
}
GetElementPtrInst *DependBaseAddrGEP =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependBaseAddrGEP, nullptr);
EXPECT_EQ(DependBaseAddrGEP->getPointerOperand(), AllocInst);
EXPECT_EQ(DependBaseAddrGEP->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), 0);
CallInst *GTID = dyn_cast<CallInst>(DependBaseAddrGEP->getNextNode());
ASSERT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Depend = dyn_cast<CallInst>(GTID->getNextNode());
ASSERT_NE(Depend, nullptr);
EXPECT_EQ(Depend->arg_size(), 3U);
EXPECT_EQ(Depend->getCalledFunction()->getName(), "__kmpc_doacross_post");
EXPECT_TRUE(isa<GlobalVariable>(Depend->getArgOperand(0)));
EXPECT_EQ(Depend->getArgOperand(1), GTID);
EXPECT_EQ(Depend->getArgOperand(2), DependBaseAddrGEP);
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveDependSink) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
LLVMContext &Ctx = M->getContext();
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
InsertPointTy AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
unsigned NumLoops = 2;
SmallVector<Value *, 2> StoreValues;
Type *LCTy = Type::getInt64Ty(Ctx);
StoreValues.emplace_back(ConstantInt::get(LCTy, 1));
StoreValues.emplace_back(ConstantInt::get(LCTy, 2));
// Test for "#omp ordered depend(sink: vec)"
Builder.restoreIP(OMPBuilder.createOrderedDepend(Builder, AllocaIP, NumLoops,
StoreValues, ".cnt.addr",
/*IsDependSource=*/false));
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
AllocaInst *AllocInst = dyn_cast<AllocaInst>(&BB->front());
ASSERT_NE(AllocInst, nullptr);
ArrayType *ArrType = dyn_cast<ArrayType>(AllocInst->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), NumLoops);
EXPECT_TRUE(
AllocInst->getAllocatedType()->getArrayElementType()->isIntegerTy(64));
Instruction *IterInst = dyn_cast<Instruction>(AllocInst);
for (unsigned Iter = 0; Iter < NumLoops; Iter++) {
GetElementPtrInst *DependAddrGEPIter =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependAddrGEPIter, nullptr);
EXPECT_EQ(DependAddrGEPIter->getPointerOperand(), AllocInst);
EXPECT_EQ(DependAddrGEPIter->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependAddrGEPIter->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), Iter);
StoreInst *StoreValue =
dyn_cast<StoreInst>(DependAddrGEPIter->getNextNode());
ASSERT_NE(StoreValue, nullptr);
EXPECT_EQ(StoreValue->getValueOperand(), StoreValues[Iter]);
EXPECT_EQ(StoreValue->getPointerOperand(), DependAddrGEPIter);
EXPECT_EQ(StoreValue->getAlign(), Align(8));
IterInst = dyn_cast<Instruction>(StoreValue);
}
GetElementPtrInst *DependBaseAddrGEP =
dyn_cast<GetElementPtrInst>(IterInst->getNextNode());
ASSERT_NE(DependBaseAddrGEP, nullptr);
EXPECT_EQ(DependBaseAddrGEP->getPointerOperand(), AllocInst);
EXPECT_EQ(DependBaseAddrGEP->getNumIndices(), (unsigned)2);
auto *FirstIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(DependBaseAddrGEP->getOperand(2));
ASSERT_NE(FirstIdx, nullptr);
ASSERT_NE(SecondIdx, nullptr);
EXPECT_EQ(FirstIdx->getValue(), 0);
EXPECT_EQ(SecondIdx->getValue(), 0);
CallInst *GTID = dyn_cast<CallInst>(DependBaseAddrGEP->getNextNode());
ASSERT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
EXPECT_FALSE(GTID->getCalledFunction()->doesNotAccessMemory());
EXPECT_FALSE(GTID->getCalledFunction()->doesNotFreeMemory());
CallInst *Depend = dyn_cast<CallInst>(GTID->getNextNode());
ASSERT_NE(Depend, nullptr);
EXPECT_EQ(Depend->arg_size(), 3U);
EXPECT_EQ(Depend->getCalledFunction()->getName(), "__kmpc_doacross_wait");
EXPECT_TRUE(isa<GlobalVariable>(Depend->getArgOperand(0)));
EXPECT_EQ(Depend->getArgOperand(1), GTID);
EXPECT_EQ(Depend->getArgOperand(2), DependBaseAddrGEP);
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveThreads) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI =
Builder.CreateAlloca(F->arg_begin()->getType(), nullptr, "priv.inst");
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
// Test for "#omp ordered [threads]"
BasicBlock *EntryBB = Builder.GetInsertBlock();
Builder.restoreIP(
OMPBuilder.createOrderedThreadsSimd(Builder, BodyGenCB, FiniCB, true));
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(EntryBB->getTerminator(), nullptr);
CallInst *OrderedEntryCI = nullptr;
for (auto &EI : *EntryBB) {
Instruction *Cur = &EI;
if (isa<CallInst>(Cur)) {
OrderedEntryCI = cast<CallInst>(Cur);
if (OrderedEntryCI->getCalledFunction()->getName() == "__kmpc_ordered")
break;
OrderedEntryCI = nullptr;
}
}
EXPECT_NE(OrderedEntryCI, nullptr);
EXPECT_EQ(OrderedEntryCI->arg_size(), 2U);
EXPECT_EQ(OrderedEntryCI->getCalledFunction()->getName(), "__kmpc_ordered");
EXPECT_TRUE(isa<GlobalVariable>(OrderedEntryCI->getArgOperand(0)));
CallInst *OrderedEndCI = nullptr;
for (auto &FI : *EntryBB) {
Instruction *Cur = &FI;
if (isa<CallInst>(Cur)) {
OrderedEndCI = cast<CallInst>(Cur);
if (OrderedEndCI->getCalledFunction()->getName() == "__kmpc_end_ordered")
break;
OrderedEndCI = nullptr;
}
}
EXPECT_NE(OrderedEndCI, nullptr);
EXPECT_EQ(OrderedEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(OrderedEndCI->getArgOperand(0)));
EXPECT_EQ(OrderedEndCI->getArgOperand(1), OrderedEntryCI->getArgOperand(1));
}
TEST_F(OpenMPIRBuilderTest, OrderedDirectiveSimd) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI =
Builder.CreateAlloca(F->arg_begin()->getType(), nullptr, "priv.inst");
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
// Test for "#omp ordered simd"
BasicBlock *EntryBB = Builder.GetInsertBlock();
Builder.restoreIP(
OMPBuilder.createOrderedThreadsSimd(Builder, BodyGenCB, FiniCB, false));
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_NE(EntryBB->getTerminator(), nullptr);
CallInst *OrderedEntryCI = nullptr;
for (auto &EI : *EntryBB) {
Instruction *Cur = &EI;
if (isa<CallInst>(Cur)) {
OrderedEntryCI = cast<CallInst>(Cur);
if (OrderedEntryCI->getCalledFunction()->getName() == "__kmpc_ordered")
break;
OrderedEntryCI = nullptr;
}
}
EXPECT_EQ(OrderedEntryCI, nullptr);
CallInst *OrderedEndCI = nullptr;
for (auto &FI : *EntryBB) {
Instruction *Cur = &FI;
if (isa<CallInst>(Cur)) {
OrderedEndCI = cast<CallInst>(Cur);
if (OrderedEndCI->getCalledFunction()->getName() == "__kmpc_end_ordered")
break;
OrderedEndCI = nullptr;
}
}
EXPECT_EQ(OrderedEndCI, nullptr);
}
TEST_F(OpenMPIRBuilderTest, CopyinBlocks) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
IntegerType *Int32 = Type::getInt32Ty(M->getContext());
AllocaInst *MasterAddress = Builder.CreateAlloca(Int32->getPointerTo());
AllocaInst *PrivAddress = Builder.CreateAlloca(Int32->getPointerTo());
BasicBlock *EntryBB = BB;
OMPBuilder.createCopyinClauseBlocks(Builder.saveIP(), MasterAddress,
PrivAddress, Int32, /*BranchtoEnd*/ true);
BranchInst *EntryBr = dyn_cast_or_null<BranchInst>(EntryBB->getTerminator());
EXPECT_NE(EntryBr, nullptr);
EXPECT_TRUE(EntryBr->isConditional());
BasicBlock *NotMasterBB = EntryBr->getSuccessor(0);
BasicBlock *CopyinEnd = EntryBr->getSuccessor(1);
CmpInst *CMP = dyn_cast_or_null<CmpInst>(EntryBr->getCondition());
EXPECT_NE(CMP, nullptr);
EXPECT_NE(NotMasterBB, nullptr);
EXPECT_NE(CopyinEnd, nullptr);
BranchInst *NotMasterBr =
dyn_cast_or_null<BranchInst>(NotMasterBB->getTerminator());
EXPECT_NE(NotMasterBr, nullptr);
EXPECT_FALSE(NotMasterBr->isConditional());
EXPECT_EQ(CopyinEnd, NotMasterBr->getSuccessor(0));
}
TEST_F(OpenMPIRBuilderTest, SingleDirective) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
if (AllocaIP.isSet())
Builder.restoreIP(AllocaIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
Builder.restoreIP(OMPBuilder.createSingle(
Builder, BodyGenCB, FiniCB, /*IsNowait*/ false, /*DidIt*/ nullptr));
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *SingleEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(SingleEntryCI->arg_size(), 2U);
EXPECT_EQ(SingleEntryCI->getCalledFunction()->getName(), "__kmpc_single");
EXPECT_TRUE(isa<GlobalVariable>(SingleEntryCI->getArgOperand(0)));
CallInst *SingleEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
SingleEndCI = cast<CallInst>(cur);
if (SingleEndCI->getCalledFunction()->getName() == "__kmpc_end_single")
break;
SingleEndCI = nullptr;
}
}
EXPECT_NE(SingleEndCI, nullptr);
EXPECT_EQ(SingleEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(SingleEndCI->getArgOperand(0)));
EXPECT_EQ(SingleEndCI->getArgOperand(1), SingleEntryCI->getArgOperand(1));
bool FoundBarrier = false;
for (auto &FI : *ExitBB) {
Instruction *cur = &FI;
if (auto CI = dyn_cast<CallInst>(cur)) {
if (CI->getCalledFunction()->getName() == "__kmpc_barrier") {
FoundBarrier = true;
break;
}
}
}
EXPECT_TRUE(FoundBarrier);
}
TEST_F(OpenMPIRBuilderTest, SingleDirectiveNowait) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
AllocaInst *PrivAI = nullptr;
BasicBlock *EntryBB = nullptr;
BasicBlock *ThenBB = nullptr;
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
if (AllocaIP.isSet())
Builder.restoreIP(AllocaIP);
else
Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
Builder.CreateStore(F->arg_begin(), PrivAI);
llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
Builder.restoreIP(CodeGenIP);
// collect some info for checks later
ThenBB = Builder.GetInsertBlock();
EntryBB = ThenBB->getUniquePredecessor();
// simple instructions for body
Value *PrivLoad =
Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
Builder.restoreIP(OMPBuilder.createSingle(
Builder, BodyGenCB, FiniCB, /*IsNowait*/ true, /*DidIt*/ nullptr));
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
EXPECT_TRUE(EntryBr->isConditional());
EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
CallInst *SingleEntryCI = cast<CallInst>(CondInst->getOperand(0));
EXPECT_EQ(SingleEntryCI->arg_size(), 2U);
EXPECT_EQ(SingleEntryCI->getCalledFunction()->getName(), "__kmpc_single");
EXPECT_TRUE(isa<GlobalVariable>(SingleEntryCI->getArgOperand(0)));
CallInst *SingleEndCI = nullptr;
for (auto &FI : *ThenBB) {
Instruction *cur = &FI;
if (isa<CallInst>(cur)) {
SingleEndCI = cast<CallInst>(cur);
if (SingleEndCI->getCalledFunction()->getName() == "__kmpc_end_single")
break;
SingleEndCI = nullptr;
}
}
EXPECT_NE(SingleEndCI, nullptr);
EXPECT_EQ(SingleEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(SingleEndCI->getArgOperand(0)));
EXPECT_EQ(SingleEndCI->getArgOperand(1), SingleEntryCI->getArgOperand(1));
CallInst *ExitBarrier = nullptr;
for (auto &FI : *ExitBB) {
Instruction *cur = &FI;
if (auto CI = dyn_cast<CallInst>(cur)) {
if (CI->getCalledFunction()->getName() == "__kmpc_barrier") {
ExitBarrier = CI;
break;
}
}
}
EXPECT_EQ(ExitBarrier, nullptr);
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicReadFlt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *Float32 = Type::getFloatTy(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(Float32);
XVal->setName("AtomicVar");
AllocaInst *VVal = Builder.CreateAlloca(Float32);
VVal->setName("AtomicRead");
AtomicOrdering AO = AtomicOrdering::Monotonic;
OpenMPIRBuilder::AtomicOpValue X = {XVal, Float32, false, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Float32, false, false};
Builder.restoreIP(OMPBuilder.createAtomicRead(Loc, X, V, AO));
IntegerType *IntCastTy =
IntegerType::get(M->getContext(), Float32->getScalarSizeInBits());
BitCastInst *CastFrmFlt = cast<BitCastInst>(VVal->getNextNode());
EXPECT_EQ(CastFrmFlt->getSrcTy(), Float32->getPointerTo());
EXPECT_EQ(CastFrmFlt->getDestTy(), IntCastTy->getPointerTo());
EXPECT_EQ(CastFrmFlt->getOperand(0), XVal);
LoadInst *AtomicLoad = cast<LoadInst>(CastFrmFlt->getNextNode());
EXPECT_TRUE(AtomicLoad->isAtomic());
EXPECT_EQ(AtomicLoad->getPointerOperand(), CastFrmFlt);
BitCastInst *CastToFlt = cast<BitCastInst>(AtomicLoad->getNextNode());
EXPECT_EQ(CastToFlt->getSrcTy(), IntCastTy);
EXPECT_EQ(CastToFlt->getDestTy(), Float32);
EXPECT_EQ(CastToFlt->getOperand(0), AtomicLoad);
StoreInst *StoreofAtomic = cast<StoreInst>(CastToFlt->getNextNode());
EXPECT_EQ(StoreofAtomic->getValueOperand(), CastToFlt);
EXPECT_EQ(StoreofAtomic->getPointerOperand(), VVal);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicReadInt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
IntegerType *Int32 = Type::getInt32Ty(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
AllocaInst *VVal = Builder.CreateAlloca(Int32);
VVal->setName("AtomicRead");
AtomicOrdering AO = AtomicOrdering::Monotonic;
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Int32, false, false};
BasicBlock *EntryBB = BB;
Builder.restoreIP(OMPBuilder.createAtomicRead(Loc, X, V, AO));
LoadInst *AtomicLoad = nullptr;
StoreInst *StoreofAtomic = nullptr;
for (Instruction &Cur : *EntryBB) {
if (isa<LoadInst>(Cur)) {
AtomicLoad = cast<LoadInst>(&Cur);
if (AtomicLoad->getPointerOperand() == XVal)
continue;
AtomicLoad = nullptr;
} else if (isa<StoreInst>(Cur)) {
StoreofAtomic = cast<StoreInst>(&Cur);
if (StoreofAtomic->getPointerOperand() == VVal)
continue;
StoreofAtomic = nullptr;
}
}
EXPECT_NE(AtomicLoad, nullptr);
EXPECT_TRUE(AtomicLoad->isAtomic());
EXPECT_NE(StoreofAtomic, nullptr);
EXPECT_EQ(StoreofAtomic->getValueOperand(), AtomicLoad);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicWriteFlt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
Type *Float32 = Type::getFloatTy(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Float32);
XVal->setName("AtomicVar");
OpenMPIRBuilder::AtomicOpValue X = {XVal, Float32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
Constant *ValToWrite = ConstantFP::get(Float32, 1.0);
Builder.restoreIP(OMPBuilder.createAtomicWrite(Loc, X, ValToWrite, AO));
IntegerType *IntCastTy =
IntegerType::get(M->getContext(), Float32->getScalarSizeInBits());
BitCastInst *CastFrmFlt = cast<BitCastInst>(XVal->getNextNode());
EXPECT_EQ(CastFrmFlt->getSrcTy(), Float32->getPointerTo());
EXPECT_EQ(CastFrmFlt->getDestTy(), IntCastTy->getPointerTo());
EXPECT_EQ(CastFrmFlt->getOperand(0), XVal);
Value *ExprCast = Builder.CreateBitCast(ValToWrite, IntCastTy);
StoreInst *StoreofAtomic = cast<StoreInst>(CastFrmFlt->getNextNode());
EXPECT_EQ(StoreofAtomic->getValueOperand(), ExprCast);
EXPECT_EQ(StoreofAtomic->getPointerOperand(), CastFrmFlt);
EXPECT_TRUE(StoreofAtomic->isAtomic());
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicWriteInt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *ValToWrite = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
BasicBlock *EntryBB = BB;
Builder.restoreIP(OMPBuilder.createAtomicWrite(Loc, X, ValToWrite, AO));
StoreInst *StoreofAtomic = nullptr;
for (Instruction &Cur : *EntryBB) {
if (isa<StoreInst>(Cur)) {
StoreofAtomic = cast<StoreInst>(&Cur);
if (StoreofAtomic->getPointerOperand() == XVal)
continue;
StoreofAtomic = nullptr;
}
}
EXPECT_NE(StoreofAtomic, nullptr);
EXPECT_TRUE(StoreofAtomic->isAtomic());
EXPECT_EQ(StoreofAtomic->getValueOperand(), ValToWrite);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicUpdate) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
IntegerType *Int32 = Type::getInt32Ty(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *ConstVal = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
Value *Expr = nullptr;
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::Sub;
bool IsXLHSInRHSPart = false;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Value *Sub = nullptr;
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) {
Sub = IRB.CreateSub(ConstVal, Atomic);
return Sub;
};
Builder.restoreIP(OMPBuilder.createAtomicUpdate(
Builder, AllocaIP, X, Expr, AO, RMWOp, UpdateOp, IsXLHSInRHSPart));
BasicBlock *ContBB = EntryBB->getSingleSuccessor();
BranchInst *ContTI = dyn_cast<BranchInst>(ContBB->getTerminator());
EXPECT_NE(ContTI, nullptr);
BasicBlock *EndBB = ContTI->getSuccessor(0);
EXPECT_TRUE(ContTI->isConditional());
EXPECT_EQ(ContTI->getSuccessor(1), ContBB);
EXPECT_NE(EndBB, nullptr);
PHINode *Phi = dyn_cast<PHINode>(&ContBB->front());
EXPECT_NE(Phi, nullptr);
EXPECT_EQ(Phi->getNumIncomingValues(), 2U);
EXPECT_EQ(Phi->getIncomingBlock(0), EntryBB);
EXPECT_EQ(Phi->getIncomingBlock(1), ContBB);
EXPECT_EQ(Sub->getNumUses(), 1U);
StoreInst *St = dyn_cast<StoreInst>(Sub->user_back());
AllocaInst *UpdateTemp = dyn_cast<AllocaInst>(St->getPointerOperand());
ExtractValueInst *ExVI1 =
dyn_cast<ExtractValueInst>(Phi->getIncomingValueForBlock(ContBB));
EXPECT_NE(ExVI1, nullptr);
AtomicCmpXchgInst *CmpExchg =
dyn_cast<AtomicCmpXchgInst>(ExVI1->getAggregateOperand());
EXPECT_NE(CmpExchg, nullptr);
EXPECT_EQ(CmpExchg->getPointerOperand(), XVal);
EXPECT_EQ(CmpExchg->getCompareOperand(), Phi);
EXPECT_EQ(CmpExchg->getSuccessOrdering(), AtomicOrdering::Monotonic);
LoadInst *Ld = dyn_cast<LoadInst>(CmpExchg->getNewValOperand());
EXPECT_NE(Ld, nullptr);
EXPECT_EQ(UpdateTemp, Ld->getPointerOperand());
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicUpdateFloat) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *FloatTy = Type::getFloatTy(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(FloatTy);
XVal->setName("AtomicVar");
Builder.CreateStore(ConstantFP::get(Type::getFloatTy(Ctx), 0.0), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, FloatTy, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
Constant *ConstVal = ConstantFP::get(Type::getFloatTy(Ctx), 1.0);
Value *Expr = nullptr;
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::FSub;
bool IsXLHSInRHSPart = false;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Value *Sub = nullptr;
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) {
Sub = IRB.CreateFSub(ConstVal, Atomic);
return Sub;
};
Builder.restoreIP(OMPBuilder.createAtomicUpdate(
Builder, AllocaIP, X, Expr, AO, RMWOp, UpdateOp, IsXLHSInRHSPart));
BasicBlock *ContBB = EntryBB->getSingleSuccessor();
BranchInst *ContTI = dyn_cast<BranchInst>(ContBB->getTerminator());
EXPECT_NE(ContTI, nullptr);
BasicBlock *EndBB = ContTI->getSuccessor(0);
EXPECT_TRUE(ContTI->isConditional());
EXPECT_EQ(ContTI->getSuccessor(1), ContBB);
EXPECT_NE(EndBB, nullptr);
PHINode *Phi = dyn_cast<PHINode>(&ContBB->front());
EXPECT_NE(Phi, nullptr);
EXPECT_EQ(Phi->getNumIncomingValues(), 2U);
EXPECT_EQ(Phi->getIncomingBlock(0), EntryBB);
EXPECT_EQ(Phi->getIncomingBlock(1), ContBB);
EXPECT_EQ(Sub->getNumUses(), 1U);
StoreInst *St = dyn_cast<StoreInst>(Sub->user_back());
AllocaInst *UpdateTemp = dyn_cast<AllocaInst>(St->getPointerOperand());
ExtractValueInst *ExVI1 =
dyn_cast<ExtractValueInst>(Phi->getIncomingValueForBlock(ContBB));
EXPECT_NE(ExVI1, nullptr);
AtomicCmpXchgInst *CmpExchg =
dyn_cast<AtomicCmpXchgInst>(ExVI1->getAggregateOperand());
EXPECT_NE(CmpExchg, nullptr);
BitCastInst *BitCastNew =
dyn_cast<BitCastInst>(CmpExchg->getPointerOperand());
EXPECT_NE(BitCastNew, nullptr);
EXPECT_EQ(BitCastNew->getOperand(0), XVal);
EXPECT_EQ(CmpExchg->getCompareOperand(), Phi);
EXPECT_EQ(CmpExchg->getSuccessOrdering(), AtomicOrdering::Monotonic);
LoadInst *Ld = dyn_cast<LoadInst>(CmpExchg->getNewValOperand());
EXPECT_NE(Ld, nullptr);
BitCastInst *BitCastOld = dyn_cast<BitCastInst>(Ld->getPointerOperand());
EXPECT_NE(BitCastOld, nullptr);
EXPECT_EQ(UpdateTemp, BitCastOld->getOperand(0));
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicUpdateIntr) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
Type *IntTy = Type::getInt32Ty(M->getContext());
AllocaInst *XVal = Builder.CreateAlloca(IntTy);
XVal->setName("AtomicVar");
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, IntTy, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
Constant *ConstVal = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
Value *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::UMax;
bool IsXLHSInRHSPart = false;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
Value *Sub = nullptr;
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) {
Sub = IRB.CreateSub(ConstVal, Atomic);
return Sub;
};
Builder.restoreIP(OMPBuilder.createAtomicUpdate(
Builder, AllocaIP, X, Expr, AO, RMWOp, UpdateOp, IsXLHSInRHSPart));
BasicBlock *ContBB = EntryBB->getSingleSuccessor();
BranchInst *ContTI = dyn_cast<BranchInst>(ContBB->getTerminator());
EXPECT_NE(ContTI, nullptr);
BasicBlock *EndBB = ContTI->getSuccessor(0);
EXPECT_TRUE(ContTI->isConditional());
EXPECT_EQ(ContTI->getSuccessor(1), ContBB);
EXPECT_NE(EndBB, nullptr);
PHINode *Phi = dyn_cast<PHINode>(&ContBB->front());
EXPECT_NE(Phi, nullptr);
EXPECT_EQ(Phi->getNumIncomingValues(), 2U);
EXPECT_EQ(Phi->getIncomingBlock(0), EntryBB);
EXPECT_EQ(Phi->getIncomingBlock(1), ContBB);
EXPECT_EQ(Sub->getNumUses(), 1U);
StoreInst *St = dyn_cast<StoreInst>(Sub->user_back());
AllocaInst *UpdateTemp = dyn_cast<AllocaInst>(St->getPointerOperand());
ExtractValueInst *ExVI1 =
dyn_cast<ExtractValueInst>(Phi->getIncomingValueForBlock(ContBB));
EXPECT_NE(ExVI1, nullptr);
AtomicCmpXchgInst *CmpExchg =
dyn_cast<AtomicCmpXchgInst>(ExVI1->getAggregateOperand());
EXPECT_NE(CmpExchg, nullptr);
EXPECT_EQ(CmpExchg->getPointerOperand(), XVal);
EXPECT_EQ(CmpExchg->getCompareOperand(), Phi);
EXPECT_EQ(CmpExchg->getSuccessOrdering(), AtomicOrdering::Monotonic);
LoadInst *Ld = dyn_cast<LoadInst>(CmpExchg->getNewValOperand());
EXPECT_NE(Ld, nullptr);
EXPECT_EQ(UpdateTemp, Ld->getPointerOperand());
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicCapture) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("AtomicVar");
AllocaInst *VVal = Builder.CreateAlloca(Int32);
VVal->setName("AtomicCapTar");
StoreInst *Init =
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Int32, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
AtomicRMWInst::BinOp RMWOp = AtomicRMWInst::Add;
bool IsXLHSInRHSPart = true;
bool IsPostfixUpdate = true;
bool UpdateExpr = true;
BasicBlock *EntryBB = BB;
OpenMPIRBuilder::InsertPointTy AllocaIP(EntryBB,
EntryBB->getFirstInsertionPt());
// integer update - not used
auto UpdateOp = [&](Value *Atomic, IRBuilder<> &IRB) { return nullptr; };
Builder.restoreIP(OMPBuilder.createAtomicCapture(
Builder, AllocaIP, X, V, Expr, AO, RMWOp, UpdateOp, UpdateExpr,
IsPostfixUpdate, IsXLHSInRHSPart));
EXPECT_EQ(EntryBB->getParent()->size(), 1U);
AtomicRMWInst *ARWM = dyn_cast<AtomicRMWInst>(Init->getNextNode());
EXPECT_NE(ARWM, nullptr);
EXPECT_EQ(ARWM->getPointerOperand(), XVal);
EXPECT_EQ(ARWM->getOperation(), RMWOp);
StoreInst *St = dyn_cast<StoreInst>(ARWM->user_back());
EXPECT_NE(St, nullptr);
EXPECT_EQ(St->getPointerOperand(), VVal);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicCompare) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("x");
StoreInst *Init =
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue XSigned = {XVal, Int32, true, false};
OpenMPIRBuilder::AtomicOpValue XUnsigned = {XVal, Int32, false, false};
// V and R are not used in atomic compare
OpenMPIRBuilder::AtomicOpValue V = {nullptr, nullptr, false, false};
OpenMPIRBuilder::AtomicOpValue R = {nullptr, nullptr, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
ConstantInt *D = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
OMPAtomicCompareOp OpMax = OMPAtomicCompareOp::MAX;
OMPAtomicCompareOp OpEQ = OMPAtomicCompareOp::EQ;
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, XSigned, V, R, Expr, nullptr, AO, OpMax, true, false, false));
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, XUnsigned, V, R, Expr, nullptr, AO, OpMax, false, false, false));
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, XSigned, V, R, Expr, D, AO, OpEQ, true, false, false));
BasicBlock *EntryBB = BB;
EXPECT_EQ(EntryBB->getParent()->size(), 1U);
EXPECT_EQ(EntryBB->size(), 5U);
AtomicRMWInst *ARWM1 = dyn_cast<AtomicRMWInst>(Init->getNextNode());
EXPECT_NE(ARWM1, nullptr);
EXPECT_EQ(ARWM1->getPointerOperand(), XVal);
EXPECT_EQ(ARWM1->getValOperand(), Expr);
EXPECT_EQ(ARWM1->getOperation(), AtomicRMWInst::Min);
AtomicRMWInst *ARWM2 = dyn_cast<AtomicRMWInst>(ARWM1->getNextNode());
EXPECT_NE(ARWM2, nullptr);
EXPECT_EQ(ARWM2->getPointerOperand(), XVal);
EXPECT_EQ(ARWM2->getValOperand(), Expr);
EXPECT_EQ(ARWM2->getOperation(), AtomicRMWInst::UMax);
AtomicCmpXchgInst *AXCHG = dyn_cast<AtomicCmpXchgInst>(ARWM2->getNextNode());
EXPECT_NE(AXCHG, nullptr);
EXPECT_EQ(AXCHG->getPointerOperand(), XVal);
EXPECT_EQ(AXCHG->getCompareOperand(), Expr);
EXPECT_EQ(AXCHG->getNewValOperand(), D);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicCompareCapture) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
LLVMContext &Ctx = M->getContext();
IntegerType *Int32 = Type::getInt32Ty(Ctx);
AllocaInst *XVal = Builder.CreateAlloca(Int32);
XVal->setName("x");
AllocaInst *VVal = Builder.CreateAlloca(Int32);
VVal->setName("v");
AllocaInst *RVal = Builder.CreateAlloca(Int32);
RVal->setName("r");
StoreInst *Init =
Builder.CreateStore(ConstantInt::get(Type::getInt32Ty(Ctx), 0U), XVal);
OpenMPIRBuilder::AtomicOpValue X = {XVal, Int32, true, false};
OpenMPIRBuilder::AtomicOpValue V = {VVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue NoV = {nullptr, nullptr, false, false};
OpenMPIRBuilder::AtomicOpValue R = {RVal, Int32, false, false};
OpenMPIRBuilder::AtomicOpValue NoR = {nullptr, nullptr, false, false};
AtomicOrdering AO = AtomicOrdering::Monotonic;
ConstantInt *Expr = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
ConstantInt *D = ConstantInt::get(Type::getInt32Ty(Ctx), 1U);
OMPAtomicCompareOp OpMax = OMPAtomicCompareOp::MAX;
OMPAtomicCompareOp OpEQ = OMPAtomicCompareOp::EQ;
// { cond-update-stmt v = x; }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ false));
// { v = x; cond-update-stmt }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ true,
/* IsFailOnly */ false));
// if(x == e) { x = d; } else { v = x; }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ true));
// { r = x == e; if(r) { x = d; } }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, NoV, R, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ false));
// { r = x == e; if(r) { x = d; } else { v = x; } }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, R, Expr, D, AO, OpEQ, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ true));
// { v = x; cond-update-stmt }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, nullptr, AO, OpMax, /* IsXBinopExpr */ true,
/* IsPostfixUpdate */ true,
/* IsFailOnly */ false));
// { cond-update-stmt v = x; }
Builder.restoreIP(OMPBuilder.createAtomicCompare(
Builder, X, V, NoR, Expr, nullptr, AO, OpMax, /* IsXBinopExpr */ false,
/* IsPostfixUpdate */ false,
/* IsFailOnly */ false));
BasicBlock *EntryBB = BB;
EXPECT_EQ(EntryBB->getParent()->size(), 5U);
BasicBlock *Cont1 = dyn_cast<BasicBlock>(EntryBB->getNextNode());
EXPECT_NE(Cont1, nullptr);
BasicBlock *Exit1 = dyn_cast<BasicBlock>(Cont1->getNextNode());
EXPECT_NE(Exit1, nullptr);
BasicBlock *Cont2 = dyn_cast<BasicBlock>(Exit1->getNextNode());
EXPECT_NE(Cont2, nullptr);
BasicBlock *Exit2 = dyn_cast<BasicBlock>(Cont2->getNextNode());
EXPECT_NE(Exit2, nullptr);
AtomicCmpXchgInst *CmpXchg1 =
dyn_cast<AtomicCmpXchgInst>(Init->getNextNode());
EXPECT_NE(CmpXchg1, nullptr);
EXPECT_EQ(CmpXchg1->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg1->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg1->getNewValOperand(), D);
ExtractValueInst *ExtVal1 =
dyn_cast<ExtractValueInst>(CmpXchg1->getNextNode());
EXPECT_NE(ExtVal1, nullptr);
EXPECT_EQ(ExtVal1->getAggregateOperand(), CmpXchg1);
EXPECT_EQ(ExtVal1->getIndices(), ArrayRef<unsigned int>(0U));
ExtractValueInst *ExtVal2 =
dyn_cast<ExtractValueInst>(ExtVal1->getNextNode());
EXPECT_NE(ExtVal2, nullptr);
EXPECT_EQ(ExtVal2->getAggregateOperand(), CmpXchg1);
EXPECT_EQ(ExtVal2->getIndices(), ArrayRef<unsigned int>(1U));
SelectInst *Sel1 = dyn_cast<SelectInst>(ExtVal2->getNextNode());
EXPECT_NE(Sel1, nullptr);
EXPECT_EQ(Sel1->getCondition(), ExtVal2);
EXPECT_EQ(Sel1->getTrueValue(), Expr);
EXPECT_EQ(Sel1->getFalseValue(), ExtVal1);
StoreInst *Store1 = dyn_cast<StoreInst>(Sel1->getNextNode());
EXPECT_NE(Store1, nullptr);
EXPECT_EQ(Store1->getPointerOperand(), VVal);
EXPECT_EQ(Store1->getValueOperand(), Sel1);
AtomicCmpXchgInst *CmpXchg2 =
dyn_cast<AtomicCmpXchgInst>(Store1->getNextNode());
EXPECT_NE(CmpXchg2, nullptr);
EXPECT_EQ(CmpXchg2->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg2->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg2->getNewValOperand(), D);
ExtractValueInst *ExtVal3 =
dyn_cast<ExtractValueInst>(CmpXchg2->getNextNode());
EXPECT_NE(ExtVal3, nullptr);
EXPECT_EQ(ExtVal3->getAggregateOperand(), CmpXchg2);
EXPECT_EQ(ExtVal3->getIndices(), ArrayRef<unsigned int>(0U));
StoreInst *Store2 = dyn_cast<StoreInst>(ExtVal3->getNextNode());
EXPECT_NE(Store2, nullptr);
EXPECT_EQ(Store2->getPointerOperand(), VVal);
EXPECT_EQ(Store2->getValueOperand(), ExtVal3);
AtomicCmpXchgInst *CmpXchg3 =
dyn_cast<AtomicCmpXchgInst>(Store2->getNextNode());
EXPECT_NE(CmpXchg3, nullptr);
EXPECT_EQ(CmpXchg3->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg3->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg3->getNewValOperand(), D);
ExtractValueInst *ExtVal4 =
dyn_cast<ExtractValueInst>(CmpXchg3->getNextNode());
EXPECT_NE(ExtVal4, nullptr);
EXPECT_EQ(ExtVal4->getAggregateOperand(), CmpXchg3);
EXPECT_EQ(ExtVal4->getIndices(), ArrayRef<unsigned int>(0U));
ExtractValueInst *ExtVal5 =
dyn_cast<ExtractValueInst>(ExtVal4->getNextNode());
EXPECT_NE(ExtVal5, nullptr);
EXPECT_EQ(ExtVal5->getAggregateOperand(), CmpXchg3);
EXPECT_EQ(ExtVal5->getIndices(), ArrayRef<unsigned int>(1U));
BranchInst *Br1 = dyn_cast<BranchInst>(ExtVal5->getNextNode());
EXPECT_NE(Br1, nullptr);
EXPECT_EQ(Br1->isConditional(), true);
EXPECT_EQ(Br1->getCondition(), ExtVal5);
EXPECT_EQ(Br1->getSuccessor(0), Exit1);
EXPECT_EQ(Br1->getSuccessor(1), Cont1);
StoreInst *Store3 = dyn_cast<StoreInst>(&Cont1->front());
EXPECT_NE(Store3, nullptr);
EXPECT_EQ(Store3->getPointerOperand(), VVal);
EXPECT_EQ(Store3->getValueOperand(), ExtVal4);
BranchInst *Br2 = dyn_cast<BranchInst>(Store3->getNextNode());
EXPECT_NE(Br2, nullptr);
EXPECT_EQ(Br2->isUnconditional(), true);
EXPECT_EQ(Br2->getSuccessor(0), Exit1);
AtomicCmpXchgInst *CmpXchg4 = dyn_cast<AtomicCmpXchgInst>(&Exit1->front());
EXPECT_NE(CmpXchg4, nullptr);
EXPECT_EQ(CmpXchg4->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg4->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg4->getNewValOperand(), D);
ExtractValueInst *ExtVal6 =
dyn_cast<ExtractValueInst>(CmpXchg4->getNextNode());
EXPECT_NE(ExtVal6, nullptr);
EXPECT_EQ(ExtVal6->getAggregateOperand(), CmpXchg4);
EXPECT_EQ(ExtVal6->getIndices(), ArrayRef<unsigned int>(1U));
ZExtInst *ZExt1 = dyn_cast<ZExtInst>(ExtVal6->getNextNode());
EXPECT_NE(ZExt1, nullptr);
EXPECT_EQ(ZExt1->getDestTy(), Int32);
StoreInst *Store4 = dyn_cast<StoreInst>(ZExt1->getNextNode());
EXPECT_NE(Store4, nullptr);
EXPECT_EQ(Store4->getPointerOperand(), RVal);
EXPECT_EQ(Store4->getValueOperand(), ZExt1);
AtomicCmpXchgInst *CmpXchg5 =
dyn_cast<AtomicCmpXchgInst>(Store4->getNextNode());
EXPECT_NE(CmpXchg5, nullptr);
EXPECT_EQ(CmpXchg5->getPointerOperand(), XVal);
EXPECT_EQ(CmpXchg5->getCompareOperand(), Expr);
EXPECT_EQ(CmpXchg5->getNewValOperand(), D);
ExtractValueInst *ExtVal7 =
dyn_cast<ExtractValueInst>(CmpXchg5->getNextNode());
EXPECT_NE(ExtVal7, nullptr);
EXPECT_EQ(ExtVal7->getAggregateOperand(), CmpXchg5);
EXPECT_EQ(ExtVal7->getIndices(), ArrayRef<unsigned int>(0U));
ExtractValueInst *ExtVal8 =
dyn_cast<ExtractValueInst>(ExtVal7->getNextNode());
EXPECT_NE(ExtVal8, nullptr);
EXPECT_EQ(ExtVal8->getAggregateOperand(), CmpXchg5);
EXPECT_EQ(ExtVal8->getIndices(), ArrayRef<unsigned int>(1U));
BranchInst *Br3 = dyn_cast<BranchInst>(ExtVal8->getNextNode());
EXPECT_NE(Br3, nullptr);
EXPECT_EQ(Br3->isConditional(), true);
EXPECT_EQ(Br3->getCondition(), ExtVal8);
EXPECT_EQ(Br3->getSuccessor(0), Exit2);
EXPECT_EQ(Br3->getSuccessor(1), Cont2);
StoreInst *Store5 = dyn_cast<StoreInst>(&Cont2->front());
EXPECT_NE(Store5, nullptr);
EXPECT_EQ(Store5->getPointerOperand(), VVal);
EXPECT_EQ(Store5->getValueOperand(), ExtVal7);
BranchInst *Br4 = dyn_cast<BranchInst>(Store5->getNextNode());
EXPECT_NE(Br4, nullptr);
EXPECT_EQ(Br4->isUnconditional(), true);
EXPECT_EQ(Br4->getSuccessor(0), Exit2);
ExtractValueInst *ExtVal9 = dyn_cast<ExtractValueInst>(&Exit2->front());
EXPECT_NE(ExtVal9, nullptr);
EXPECT_EQ(ExtVal9->getAggregateOperand(), CmpXchg5);
EXPECT_EQ(ExtVal9->getIndices(), ArrayRef<unsigned int>(1U));
ZExtInst *ZExt2 = dyn_cast<ZExtInst>(ExtVal9->getNextNode());
EXPECT_NE(ZExt2, nullptr);
EXPECT_EQ(ZExt2->getDestTy(), Int32);
StoreInst *Store6 = dyn_cast<StoreInst>(ZExt2->getNextNode());
EXPECT_NE(Store6, nullptr);
EXPECT_EQ(Store6->getPointerOperand(), RVal);
EXPECT_EQ(Store6->getValueOperand(), ZExt2);
AtomicRMWInst *ARWM1 = dyn_cast<AtomicRMWInst>(Store6->getNextNode());
EXPECT_NE(ARWM1, nullptr);
EXPECT_EQ(ARWM1->getPointerOperand(), XVal);
EXPECT_EQ(ARWM1->getValOperand(), Expr);
EXPECT_EQ(ARWM1->getOperation(), AtomicRMWInst::Min);
StoreInst *Store7 = dyn_cast<StoreInst>(ARWM1->getNextNode());
EXPECT_NE(Store7, nullptr);
EXPECT_EQ(Store7->getPointerOperand(), VVal);
EXPECT_EQ(Store7->getValueOperand(), ARWM1);
AtomicRMWInst *ARWM2 = dyn_cast<AtomicRMWInst>(Store7->getNextNode());
EXPECT_NE(ARWM2, nullptr);
EXPECT_EQ(ARWM2->getPointerOperand(), XVal);
EXPECT_EQ(ARWM2->getValOperand(), Expr);
EXPECT_EQ(ARWM2->getOperation(), AtomicRMWInst::Max);
CmpInst *Cmp1 = dyn_cast<CmpInst>(ARWM2->getNextNode());
EXPECT_NE(Cmp1, nullptr);
EXPECT_EQ(Cmp1->getPredicate(), CmpInst::ICMP_SGT);
EXPECT_EQ(Cmp1->getOperand(0), ARWM2);
EXPECT_EQ(Cmp1->getOperand(1), Expr);
SelectInst *Sel2 = dyn_cast<SelectInst>(Cmp1->getNextNode());
EXPECT_NE(Sel2, nullptr);
EXPECT_EQ(Sel2->getCondition(), Cmp1);
EXPECT_EQ(Sel2->getTrueValue(), Expr);
EXPECT_EQ(Sel2->getFalseValue(), ARWM2);
StoreInst *Store8 = dyn_cast<StoreInst>(Sel2->getNextNode());
EXPECT_NE(Store8, nullptr);
EXPECT_EQ(Store8->getPointerOperand(), VVal);
EXPECT_EQ(Store8->getValueOperand(), Sel2);
Builder.CreateRetVoid();
OMPBuilder.finalize();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
/// Returns the single instruction of InstTy type in BB that uses the value V.
/// If there is more than one such instruction, returns null.
template <typename InstTy>
static InstTy *findSingleUserInBlock(Value *V, BasicBlock *BB) {
InstTy *Result = nullptr;
for (User *U : V->users()) {
auto *Inst = dyn_cast<InstTy>(U);
if (!Inst || Inst->getParent() != BB)
continue;
if (Result)
return nullptr;
Result = Inst;
}
return Result;
}
/// Returns true if BB contains a simple binary reduction that loads a value
/// from Accum, performs some binary operation with it, and stores it back to
/// Accum.
static bool isSimpleBinaryReduction(Value *Accum, BasicBlock *BB,
Instruction::BinaryOps *OpCode = nullptr) {
StoreInst *Store = findSingleUserInBlock<StoreInst>(Accum, BB);
if (!Store)
return false;
auto *Stored = dyn_cast<BinaryOperator>(Store->getOperand(0));
if (!Stored)
return false;
if (OpCode && *OpCode != Stored->getOpcode())
return false;
auto *Load = dyn_cast<LoadInst>(Stored->getOperand(0));
return Load && Load->getOperand(0) == Accum;
}
/// Returns true if BB contains a binary reduction that reduces V using a binary
/// operator into an accumulator that is a function argument.
static bool isValueReducedToFuncArg(Value *V, BasicBlock *BB) {
auto *ReductionOp = findSingleUserInBlock<BinaryOperator>(V, BB);
if (!ReductionOp)
return false;
auto *GlobalLoad = dyn_cast<LoadInst>(ReductionOp->getOperand(0));
if (!GlobalLoad)
return false;
auto *Store = findSingleUserInBlock<StoreInst>(ReductionOp, BB);
if (!Store)
return false;
return Store->getPointerOperand() == GlobalLoad->getPointerOperand() &&
isa<Argument>(findAggregateFromValue(GlobalLoad->getPointerOperand()));
}
/// Finds among users of Ptr a pair of GEP instructions with indices [0, 0] and
/// [0, 1], respectively, and assigns results of these instructions to Zero and
/// One. Returns true on success, false on failure or if such instructions are
/// not unique among the users of Ptr.
static bool findGEPZeroOne(Value *Ptr, Value *&Zero, Value *&One) {
Zero = nullptr;
One = nullptr;
for (User *U : Ptr->users()) {
if (auto *GEP = dyn_cast<GetElementPtrInst>(U)) {
if (GEP->getNumIndices() != 2)
continue;
auto *FirstIdx = dyn_cast<ConstantInt>(GEP->getOperand(1));
auto *SecondIdx = dyn_cast<ConstantInt>(GEP->getOperand(2));
EXPECT_NE(FirstIdx, nullptr);
EXPECT_NE(SecondIdx, nullptr);
EXPECT_TRUE(FirstIdx->isZero());
if (SecondIdx->isZero()) {
if (Zero)
return false;
Zero = GEP;
} else if (SecondIdx->isOne()) {
if (One)
return false;
One = GEP;
} else {
return false;
}
}
}
return Zero != nullptr && One != nullptr;
}
static OpenMPIRBuilder::InsertPointTy
sumReduction(OpenMPIRBuilder::InsertPointTy IP, Value *LHS, Value *RHS,
Value *&Result) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Result = Builder.CreateFAdd(LHS, RHS, "red.add");
return Builder.saveIP();
}
static OpenMPIRBuilder::InsertPointTy
sumAtomicReduction(OpenMPIRBuilder::InsertPointTy IP, Type *Ty, Value *LHS,
Value *RHS) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Value *Partial = Builder.CreateLoad(Ty, RHS, "red.partial");
Builder.CreateAtomicRMW(AtomicRMWInst::FAdd, LHS, Partial, None,
AtomicOrdering::Monotonic);
return Builder.saveIP();
}
static OpenMPIRBuilder::InsertPointTy
xorReduction(OpenMPIRBuilder::InsertPointTy IP, Value *LHS, Value *RHS,
Value *&Result) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Result = Builder.CreateXor(LHS, RHS, "red.xor");
return Builder.saveIP();
}
static OpenMPIRBuilder::InsertPointTy
xorAtomicReduction(OpenMPIRBuilder::InsertPointTy IP, Type *Ty, Value *LHS,
Value *RHS) {
IRBuilder<> Builder(IP.getBlock(), IP.getPoint());
Value *Partial = Builder.CreateLoad(Ty, RHS, "red.partial");
Builder.CreateAtomicRMW(AtomicRMWInst::Xor, LHS, Partial, None,
AtomicOrdering::Monotonic);
return Builder.saveIP();
}
TEST_F(OpenMPIRBuilderTest, CreateReductions) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
// Create variables to be reduced.
InsertPointTy OuterAllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
Type *SumType = Builder.getFloatTy();
Type *XorType = Builder.getInt32Ty();
Value *SumReduced;
Value *XorReduced;
{
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(OuterAllocaIP);
SumReduced = Builder.CreateAlloca(SumType);
XorReduced = Builder.CreateAlloca(XorType);
}
// Store initial values of reductions into global variables.
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0), SumReduced);
Builder.CreateStore(Builder.getInt32(1), XorReduced);
// The loop body computes two reductions:
// sum of (float) thread-id;
// xor of thread-id;
// and store the result in global variables.
InsertPointTy BodyIP, BodyAllocaIP;
auto BodyGenCB = [&](InsertPointTy InnerAllocaIP, InsertPointTy CodeGenIP) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
uint32_t StrSize;
Constant *SrcLocStr = OMPBuilder.getOrCreateSrcLocStr(Loc, StrSize);
Value *Ident = OMPBuilder.getOrCreateIdent(SrcLocStr, StrSize);
Value *TID = OMPBuilder.getOrCreateThreadID(Ident);
Value *SumLocal =
Builder.CreateUIToFP(TID, Builder.getFloatTy(), "sum.local");
Value *SumPartial = Builder.CreateLoad(SumType, SumReduced, "sum.partial");
Value *XorPartial = Builder.CreateLoad(XorType, XorReduced, "xor.partial");
Value *Sum = Builder.CreateFAdd(SumPartial, SumLocal, "sum");
Value *Xor = Builder.CreateXor(XorPartial, TID, "xor");
Builder.CreateStore(Sum, SumReduced);
Builder.CreateStore(Xor, XorReduced);
BodyIP = Builder.saveIP();
BodyAllocaIP = InnerAllocaIP;
};
// Privatization for reduction creates local copies of reduction variables and
// initializes them to reduction-neutral values.
Value *SumPrivatized;
Value *XorPrivatized;
auto PrivCB = [&](InsertPointTy InnerAllocaIP, InsertPointTy CodeGenIP,
Value &Original, Value &Inner, Value *&ReplVal) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(InnerAllocaIP);
if (&Original == SumReduced) {
SumPrivatized = Builder.CreateAlloca(Builder.getFloatTy());
ReplVal = SumPrivatized;
} else if (&Original == XorReduced) {
XorPrivatized = Builder.CreateAlloca(Builder.getInt32Ty());
ReplVal = XorPrivatized;
} else {
ReplVal = &Inner;
return CodeGenIP;
}
Builder.restoreIP(CodeGenIP);
if (&Original == SumReduced)
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0),
SumPrivatized);
else if (&Original == XorReduced)
Builder.CreateStore(Builder.getInt32(0), XorPrivatized);
return Builder.saveIP();
};
// Do nothing in finalization.
auto FiniCB = [&](InsertPointTy CodeGenIP) { return CodeGenIP; };
InsertPointTy AfterIP =
OMPBuilder.createParallel(Loc, OuterAllocaIP, BodyGenCB, PrivCB, FiniCB,
/* IfCondition */ nullptr,
/* NumThreads */ nullptr, OMP_PROC_BIND_default,
/* IsCancellable */ false);
Builder.restoreIP(AfterIP);
OpenMPIRBuilder::ReductionInfo ReductionInfos[] = {
{SumType, SumReduced, SumPrivatized, sumReduction, sumAtomicReduction},
{XorType, XorReduced, XorPrivatized, xorReduction, xorAtomicReduction}};
OMPBuilder.createReductions(BodyIP, BodyAllocaIP, ReductionInfos);
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize(F);
// The IR must be valid.
EXPECT_FALSE(verifyModule(*M));
// Outlining must have happened.
SmallVector<CallInst *> ForkCalls;
findCalls(F, omp::RuntimeFunction::OMPRTL___kmpc_fork_call, OMPBuilder,
ForkCalls);
ASSERT_EQ(ForkCalls.size(), 1u);
Value *CalleeVal = cast<Constant>(ForkCalls[0]->getOperand(2))->getOperand(0);
Function *Outlined = dyn_cast<Function>(CalleeVal);
EXPECT_NE(Outlined, nullptr);
// Check that the lock variable was created with the expected name.
GlobalVariable *LockVar =
M->getGlobalVariable(".gomp_critical_user_.reduction.var");
EXPECT_NE(LockVar, nullptr);
// Find the allocation of a local array that will be used to call the runtime
// reduciton function.
BasicBlock &AllocBlock = Outlined->getEntryBlock();
Value *LocalArray = nullptr;
for (Instruction &I : AllocBlock) {
if (AllocaInst *Alloc = dyn_cast<AllocaInst>(&I)) {
if (!Alloc->getAllocatedType()->isArrayTy() ||
!Alloc->getAllocatedType()->getArrayElementType()->isPointerTy())
continue;
LocalArray = Alloc;
break;
}
}
ASSERT_NE(LocalArray, nullptr);
// Find the call to the runtime reduction function.
BasicBlock *BB = AllocBlock.getUniqueSuccessor();
Value *LocalArrayPtr = nullptr;
Value *ReductionFnVal = nullptr;
Value *SwitchArg = nullptr;
for (Instruction &I : *BB) {
if (CallInst *Call = dyn_cast<CallInst>(&I)) {
if (Call->getCalledFunction() !=
OMPBuilder.getOrCreateRuntimeFunctionPtr(
RuntimeFunction::OMPRTL___kmpc_reduce))
continue;
LocalArrayPtr = Call->getOperand(4);
ReductionFnVal = Call->getOperand(5);
SwitchArg = Call;
break;
}
}
// Check that the local array is passed to the function.
ASSERT_NE(LocalArrayPtr, nullptr);
BitCastInst *BitCast = dyn_cast<BitCastInst>(LocalArrayPtr);
ASSERT_NE(BitCast, nullptr);
EXPECT_EQ(BitCast->getOperand(0), LocalArray);
// Find the GEP instructions preceding stores to the local array.
Value *FirstArrayElemPtr = nullptr;
Value *SecondArrayElemPtr = nullptr;
EXPECT_EQ(LocalArray->getNumUses(), 3u);
ASSERT_TRUE(
findGEPZeroOne(LocalArray, FirstArrayElemPtr, SecondArrayElemPtr));
// Check that the values stored into the local array are privatized reduction
// variables.
auto *FirstStored = dyn_cast_or_null<BitCastInst>(
findStoredValue<GetElementPtrInst>(FirstArrayElemPtr));
auto *SecondStored = dyn_cast_or_null<BitCastInst>(
findStoredValue<GetElementPtrInst>(SecondArrayElemPtr));
ASSERT_NE(FirstStored, nullptr);
ASSERT_NE(SecondStored, nullptr);
Value *FirstPrivatized = FirstStored->getOperand(0);
Value *SecondPrivatized = SecondStored->getOperand(0);
EXPECT_TRUE(
isSimpleBinaryReduction(FirstPrivatized, FirstStored->getParent()));
EXPECT_TRUE(
isSimpleBinaryReduction(SecondPrivatized, SecondStored->getParent()));
// Check that the result of the runtime reduction call is used for further
// dispatch.
ASSERT_EQ(SwitchArg->getNumUses(), 1u);
SwitchInst *Switch = dyn_cast<SwitchInst>(*SwitchArg->user_begin());
ASSERT_NE(Switch, nullptr);
EXPECT_EQ(Switch->getNumSuccessors(), 3u);
BasicBlock *NonAtomicBB = Switch->case_begin()->getCaseSuccessor();
BasicBlock *AtomicBB = std::next(Switch->case_begin())->getCaseSuccessor();
// Non-atomic block contains reductions to the global reduction variable,
// which is passed into the outlined function as an argument.
Value *FirstLoad =
findSingleUserInBlock<LoadInst>(FirstPrivatized, NonAtomicBB);
Value *SecondLoad =
findSingleUserInBlock<LoadInst>(SecondPrivatized, NonAtomicBB);
EXPECT_TRUE(isValueReducedToFuncArg(FirstLoad, NonAtomicBB));
EXPECT_TRUE(isValueReducedToFuncArg(SecondLoad, NonAtomicBB));
// Atomic block also constains reductions to the global reduction variable.
FirstLoad = findSingleUserInBlock<LoadInst>(FirstPrivatized, AtomicBB);
SecondLoad = findSingleUserInBlock<LoadInst>(SecondPrivatized, AtomicBB);
auto *FirstAtomic = findSingleUserInBlock<AtomicRMWInst>(FirstLoad, AtomicBB);
auto *SecondAtomic =
findSingleUserInBlock<AtomicRMWInst>(SecondLoad, AtomicBB);
ASSERT_NE(FirstAtomic, nullptr);
Value *AtomicStorePointer = FirstAtomic->getPointerOperand();
EXPECT_TRUE(isa<Argument>(findAggregateFromValue(AtomicStorePointer)));
ASSERT_NE(SecondAtomic, nullptr);
AtomicStorePointer = SecondAtomic->getPointerOperand();
EXPECT_TRUE(isa<Argument>(findAggregateFromValue(AtomicStorePointer)));
// Check that the separate reduction function also performs (non-atomic)
// reductions after extracting reduction variables from its arguments.
Function *ReductionFn = cast<Function>(ReductionFnVal);
BasicBlock *FnReductionBB = &ReductionFn->getEntryBlock();
auto *Bitcast =
findSingleUserInBlock<BitCastInst>(ReductionFn->getArg(0), FnReductionBB);
Value *FirstLHSPtr;
Value *SecondLHSPtr;
ASSERT_TRUE(findGEPZeroOne(Bitcast, FirstLHSPtr, SecondLHSPtr));
Value *Opaque = findSingleUserInBlock<LoadInst>(FirstLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
Bitcast = findSingleUserInBlock<BitCastInst>(Opaque, FnReductionBB);
ASSERT_NE(Bitcast, nullptr);
EXPECT_TRUE(isSimpleBinaryReduction(Bitcast, FnReductionBB));
Opaque = findSingleUserInBlock<LoadInst>(SecondLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
Bitcast = findSingleUserInBlock<BitCastInst>(Opaque, FnReductionBB);
ASSERT_NE(Bitcast, nullptr);
EXPECT_TRUE(isSimpleBinaryReduction(Bitcast, FnReductionBB));
Bitcast =
findSingleUserInBlock<BitCastInst>(ReductionFn->getArg(1), FnReductionBB);
Value *FirstRHS;
Value *SecondRHS;
EXPECT_TRUE(findGEPZeroOne(Bitcast, FirstRHS, SecondRHS));
}
TEST_F(OpenMPIRBuilderTest, CreateTwoReductions) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "parallel.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
// Create variables to be reduced.
InsertPointTy OuterAllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
Type *SumType = Builder.getFloatTy();
Type *XorType = Builder.getInt32Ty();
Value *SumReduced;
Value *XorReduced;
{
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(OuterAllocaIP);
SumReduced = Builder.CreateAlloca(SumType);
XorReduced = Builder.CreateAlloca(XorType);
}
// Store initial values of reductions into global variables.
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0), SumReduced);
Builder.CreateStore(Builder.getInt32(1), XorReduced);
InsertPointTy FirstBodyIP, FirstBodyAllocaIP;
auto FirstBodyGenCB = [&](InsertPointTy InnerAllocaIP,
InsertPointTy CodeGenIP) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
uint32_t StrSize;
Constant *SrcLocStr = OMPBuilder.getOrCreateSrcLocStr(Loc, StrSize);
Value *Ident = OMPBuilder.getOrCreateIdent(SrcLocStr, StrSize);
Value *TID = OMPBuilder.getOrCreateThreadID(Ident);
Value *SumLocal =
Builder.CreateUIToFP(TID, Builder.getFloatTy(), "sum.local");
Value *SumPartial = Builder.CreateLoad(SumType, SumReduced, "sum.partial");
Value *Sum = Builder.CreateFAdd(SumPartial, SumLocal, "sum");
Builder.CreateStore(Sum, SumReduced);
FirstBodyIP = Builder.saveIP();
FirstBodyAllocaIP = InnerAllocaIP;
};
InsertPointTy SecondBodyIP, SecondBodyAllocaIP;
auto SecondBodyGenCB = [&](InsertPointTy InnerAllocaIP,
InsertPointTy CodeGenIP) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(CodeGenIP);
uint32_t StrSize;
Constant *SrcLocStr = OMPBuilder.getOrCreateSrcLocStr(Loc, StrSize);
Value *Ident = OMPBuilder.getOrCreateIdent(SrcLocStr, StrSize);
Value *TID = OMPBuilder.getOrCreateThreadID(Ident);
Value *XorPartial = Builder.CreateLoad(XorType, XorReduced, "xor.partial");
Value *Xor = Builder.CreateXor(XorPartial, TID, "xor");
Builder.CreateStore(Xor, XorReduced);
SecondBodyIP = Builder.saveIP();
SecondBodyAllocaIP = InnerAllocaIP;
};
// Privatization for reduction creates local copies of reduction variables and
// initializes them to reduction-neutral values. The same privatization
// callback is used for both loops, with dispatch based on the value being
// privatized.
Value *SumPrivatized;
Value *XorPrivatized;
auto PrivCB = [&](InsertPointTy InnerAllocaIP, InsertPointTy CodeGenIP,
Value &Original, Value &Inner, Value *&ReplVal) {
IRBuilderBase::InsertPointGuard Guard(Builder);
Builder.restoreIP(InnerAllocaIP);
if (&Original == SumReduced) {
SumPrivatized = Builder.CreateAlloca(Builder.getFloatTy());
ReplVal = SumPrivatized;
} else if (&Original == XorReduced) {
XorPrivatized = Builder.CreateAlloca(Builder.getInt32Ty());
ReplVal = XorPrivatized;
} else {
ReplVal = &Inner;
return CodeGenIP;
}
Builder.restoreIP(CodeGenIP);
if (&Original == SumReduced)
Builder.CreateStore(ConstantFP::get(Builder.getFloatTy(), 0.0),
SumPrivatized);
else if (&Original == XorReduced)
Builder.CreateStore(Builder.getInt32(0), XorPrivatized);
return Builder.saveIP();
};
// Do nothing in finalization.
auto FiniCB = [&](InsertPointTy CodeGenIP) { return CodeGenIP; };
Builder.restoreIP(
OMPBuilder.createParallel(Loc, OuterAllocaIP, FirstBodyGenCB, PrivCB,
FiniCB, /* IfCondition */ nullptr,
/* NumThreads */ nullptr, OMP_PROC_BIND_default,
/* IsCancellable */ false));
InsertPointTy AfterIP = OMPBuilder.createParallel(
{Builder.saveIP(), DL}, OuterAllocaIP, SecondBodyGenCB, PrivCB, FiniCB,
/* IfCondition */ nullptr,
/* NumThreads */ nullptr, OMP_PROC_BIND_default,
/* IsCancellable */ false);
OMPBuilder.createReductions(
FirstBodyIP, FirstBodyAllocaIP,
{{SumType, SumReduced, SumPrivatized, sumReduction, sumAtomicReduction}});
OMPBuilder.createReductions(
SecondBodyIP, SecondBodyAllocaIP,
{{XorType, XorReduced, XorPrivatized, xorReduction, xorAtomicReduction}});
Builder.restoreIP(AfterIP);
Builder.CreateRetVoid();
OMPBuilder.finalize(F);
// The IR must be valid.
EXPECT_FALSE(verifyModule(*M));
// Two different outlined functions must have been created.
SmallVector<CallInst *> ForkCalls;
findCalls(F, omp::RuntimeFunction::OMPRTL___kmpc_fork_call, OMPBuilder,
ForkCalls);
ASSERT_EQ(ForkCalls.size(), 2u);
Value *CalleeVal = cast<Constant>(ForkCalls[0]->getOperand(2))->getOperand(0);
Function *FirstCallee = cast<Function>(CalleeVal);
CalleeVal = cast<Constant>(ForkCalls[1]->getOperand(2))->getOperand(0);
Function *SecondCallee = cast<Function>(CalleeVal);
EXPECT_NE(FirstCallee, SecondCallee);
// Two different reduction functions must have been created.
SmallVector<CallInst *> ReduceCalls;
findCalls(FirstCallee, omp::RuntimeFunction::OMPRTL___kmpc_reduce, OMPBuilder,
ReduceCalls);
ASSERT_EQ(ReduceCalls.size(), 1u);
auto *AddReduction = cast<Function>(ReduceCalls[0]->getOperand(5));
ReduceCalls.clear();
findCalls(SecondCallee, omp::RuntimeFunction::OMPRTL___kmpc_reduce,
OMPBuilder, ReduceCalls);
auto *XorReduction = cast<Function>(ReduceCalls[0]->getOperand(5));
EXPECT_NE(AddReduction, XorReduction);
// Each reduction function does its own kind of reduction.
BasicBlock *FnReductionBB = &AddReduction->getEntryBlock();
auto *Bitcast = findSingleUserInBlock<BitCastInst>(AddReduction->getArg(0),
FnReductionBB);
ASSERT_NE(Bitcast, nullptr);
Value *FirstLHSPtr =
findSingleUserInBlock<GetElementPtrInst>(Bitcast, FnReductionBB);
ASSERT_NE(FirstLHSPtr, nullptr);
Value *Opaque = findSingleUserInBlock<LoadInst>(FirstLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
Bitcast = findSingleUserInBlock<BitCastInst>(Opaque, FnReductionBB);
ASSERT_NE(Bitcast, nullptr);
Instruction::BinaryOps Opcode = Instruction::FAdd;
EXPECT_TRUE(isSimpleBinaryReduction(Bitcast, FnReductionBB, &Opcode));
FnReductionBB = &XorReduction->getEntryBlock();
Bitcast = findSingleUserInBlock<BitCastInst>(XorReduction->getArg(0),
FnReductionBB);
ASSERT_NE(Bitcast, nullptr);
Value *SecondLHSPtr =
findSingleUserInBlock<GetElementPtrInst>(Bitcast, FnReductionBB);
ASSERT_NE(FirstLHSPtr, nullptr);
Opaque = findSingleUserInBlock<LoadInst>(SecondLHSPtr, FnReductionBB);
ASSERT_NE(Opaque, nullptr);
Bitcast = findSingleUserInBlock<BitCastInst>(Opaque, FnReductionBB);
ASSERT_NE(Bitcast, nullptr);
Opcode = Instruction::Xor;
EXPECT_TRUE(isSimpleBinaryReduction(Bitcast, FnReductionBB, &Opcode));
}
TEST_F(OpenMPIRBuilderTest, CreateSectionsSimple) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
using BodyGenCallbackTy = llvm::OpenMPIRBuilder::StorableBodyGenCallbackTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "sections.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
llvm::SmallVector<BodyGenCallbackTy, 4> SectionCBVector;
llvm::SmallVector<BasicBlock *, 4> CaseBBs;
auto FiniCB = [&](InsertPointTy IP) {};
auto SectionCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {};
SectionCBVector.push_back(SectionCB);
auto PrivCB = [](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
llvm::Value &, llvm::Value &Val,
llvm::Value *&ReplVal) { return CodeGenIP; };
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
Builder.restoreIP(OMPBuilder.createSections(Loc, AllocaIP, SectionCBVector,
PrivCB, FiniCB, false, false));
Builder.CreateRetVoid(); // Required at the end of the function
EXPECT_NE(F->getEntryBlock().getTerminator(), nullptr);
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateSections) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
using BodyGenCallbackTy = llvm::OpenMPIRBuilder::StorableBodyGenCallbackTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
llvm::SmallVector<BodyGenCallbackTy, 4> SectionCBVector;
llvm::SmallVector<BasicBlock *, 4> CaseBBs;
BasicBlock *SwitchBB = nullptr;
AllocaInst *PrivAI = nullptr;
SwitchInst *Switch = nullptr;
unsigned NumBodiesGenerated = 0;
unsigned NumFiniCBCalls = 0;
PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
auto FiniCB = [&](InsertPointTy IP) {
++NumFiniCBCalls;
BasicBlock *IPBB = IP.getBlock();
EXPECT_NE(IPBB->end(), IP.getPoint());
};
auto SectionCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
++NumBodiesGenerated;
CaseBBs.push_back(CodeGenIP.getBlock());
SwitchBB = CodeGenIP.getBlock()->getSinglePredecessor();
Builder.restoreIP(CodeGenIP);
Builder.CreateStore(F->arg_begin(), PrivAI);
Value *PrivLoad =
Builder.CreateLoad(F->arg_begin()->getType(), PrivAI, "local.alloca");
Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
};
auto PrivCB = [](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
llvm::Value &, llvm::Value &Val, llvm::Value *&ReplVal) {
// TODO: Privatization not implemented yet
return CodeGenIP;
};
SectionCBVector.push_back(SectionCB);
SectionCBVector.push_back(SectionCB);
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
Builder.restoreIP(OMPBuilder.createSections(Loc, AllocaIP, SectionCBVector,
PrivCB, FiniCB, false, false));
Builder.CreateRetVoid(); // Required at the end of the function
// Switch BB's predecessor is loop condition BB, whose successor at index 1 is
// loop's exit BB
BasicBlock *ForExitBB =
SwitchBB->getSinglePredecessor()->getTerminator()->getSuccessor(1);
EXPECT_NE(ForExitBB, nullptr);
EXPECT_NE(PrivAI, nullptr);
Function *OutlinedFn = PrivAI->getFunction();
EXPECT_EQ(F, OutlinedFn);
EXPECT_FALSE(verifyModule(*M, &errs()));
EXPECT_EQ(OutlinedFn->arg_size(), 1U);
BasicBlock *LoopPreheaderBB =
OutlinedFn->getEntryBlock().getSingleSuccessor();
// loop variables are 5 - lower bound, upper bound, stride, islastiter, and
// iterator/counter
bool FoundForInit = false;
for (Instruction &Inst : *LoopPreheaderBB) {
if (isa<CallInst>(Inst)) {
if (cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_for_static_init_4u") {
FoundForInit = true;
}
}
}
EXPECT_EQ(FoundForInit, true);
bool FoundForExit = false;
bool FoundBarrier = false;
for (Instruction &Inst : *ForExitBB) {
if (isa<CallInst>(Inst)) {
if (cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_for_static_fini") {
FoundForExit = true;
}
if (cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_barrier") {
FoundBarrier = true;
}
if (FoundForExit && FoundBarrier)
break;
}
}
EXPECT_EQ(FoundForExit, true);
EXPECT_EQ(FoundBarrier, true);
EXPECT_NE(SwitchBB, nullptr);
EXPECT_NE(SwitchBB->getTerminator(), nullptr);
EXPECT_EQ(isa<SwitchInst>(SwitchBB->getTerminator()), true);
Switch = cast<SwitchInst>(SwitchBB->getTerminator());
EXPECT_EQ(Switch->getNumCases(), 2U);
EXPECT_EQ(CaseBBs.size(), 2U);
for (auto *&CaseBB : CaseBBs) {
EXPECT_EQ(CaseBB->getParent(), OutlinedFn);
}
ASSERT_EQ(NumBodiesGenerated, 2U);
ASSERT_EQ(NumFiniCBCalls, 1U);
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateSectionsNoWait) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
using BodyGenCallbackTy = llvm::OpenMPIRBuilder::StorableBodyGenCallbackTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
BasicBlock *EnterBB = BasicBlock::Create(Ctx, "sections.enter", F);
Builder.CreateBr(EnterBB);
Builder.SetInsertPoint(EnterBB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
llvm::SmallVector<BodyGenCallbackTy, 4> SectionCBVector;
auto PrivCB = [](InsertPointTy AllocaIP, InsertPointTy CodeGenIP,
llvm::Value &, llvm::Value &Val,
llvm::Value *&ReplVal) { return CodeGenIP; };
auto FiniCB = [&](InsertPointTy IP) {};
Builder.restoreIP(OMPBuilder.createSections(Loc, AllocaIP, SectionCBVector,
PrivCB, FiniCB, false, true));
Builder.CreateRetVoid(); // Required at the end of the function
for (auto &Inst : instructions(*F)) {
EXPECT_FALSE(isa<CallInst>(Inst) &&
cast<CallInst>(&Inst)->getCalledFunction()->getName() ==
"__kmpc_barrier" &&
"call to function __kmpc_barrier found with nowait");
}
}
TEST_F(OpenMPIRBuilderTest, CreateOffloadMaptypes) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
SmallVector<uint64_t> Mappings = {0, 1};
GlobalVariable *OffloadMaptypesGlobal =
OMPBuilder.createOffloadMaptypes(Mappings, "offload_maptypes");
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(OffloadMaptypesGlobal->getName(), "offload_maptypes");
EXPECT_TRUE(OffloadMaptypesGlobal->isConstant());
EXPECT_TRUE(OffloadMaptypesGlobal->hasGlobalUnnamedAddr());
EXPECT_TRUE(OffloadMaptypesGlobal->hasPrivateLinkage());
EXPECT_TRUE(OffloadMaptypesGlobal->hasInitializer());
Constant *Initializer = OffloadMaptypesGlobal->getInitializer();
EXPECT_TRUE(isa<ConstantDataArray>(Initializer));
ConstantDataArray *MappingInit = dyn_cast<ConstantDataArray>(Initializer);
EXPECT_EQ(MappingInit->getNumElements(), Mappings.size());
EXPECT_TRUE(MappingInit->getType()->getElementType()->isIntegerTy(64));
Constant *CA = ConstantDataArray::get(Builder.getContext(), Mappings);
EXPECT_EQ(MappingInit, CA);
}
TEST_F(OpenMPIRBuilderTest, CreateOffloadMapnames) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
IRBuilder<> Builder(BB);
uint32_t StrSize;
Constant *Cst1 =
OMPBuilder.getOrCreateSrcLocStr("array1", "file1", 2, 5, StrSize);
Constant *Cst2 =
OMPBuilder.getOrCreateSrcLocStr("array2", "file1", 3, 5, StrSize);
SmallVector<llvm::Constant *> Names = {Cst1, Cst2};
GlobalVariable *OffloadMaptypesGlobal =
OMPBuilder.createOffloadMapnames(Names, "offload_mapnames");
EXPECT_FALSE(M->global_empty());
EXPECT_EQ(OffloadMaptypesGlobal->getName(), "offload_mapnames");
EXPECT_TRUE(OffloadMaptypesGlobal->isConstant());
EXPECT_FALSE(OffloadMaptypesGlobal->hasGlobalUnnamedAddr());
EXPECT_TRUE(OffloadMaptypesGlobal->hasPrivateLinkage());
EXPECT_TRUE(OffloadMaptypesGlobal->hasInitializer());
Constant *Initializer = OffloadMaptypesGlobal->getInitializer();
EXPECT_TRUE(isa<Constant>(Initializer->getOperand(0)->stripPointerCasts()));
EXPECT_TRUE(isa<Constant>(Initializer->getOperand(1)->stripPointerCasts()));
GlobalVariable *Name1Gbl =
cast<GlobalVariable>(Initializer->getOperand(0)->stripPointerCasts());
EXPECT_TRUE(isa<ConstantDataArray>(Name1Gbl->getInitializer()));
ConstantDataArray *Name1GblCA =
dyn_cast<ConstantDataArray>(Name1Gbl->getInitializer());
EXPECT_EQ(Name1GblCA->getAsCString(), ";file1;array1;2;5;;");
GlobalVariable *Name2Gbl =
cast<GlobalVariable>(Initializer->getOperand(1)->stripPointerCasts());
EXPECT_TRUE(isa<ConstantDataArray>(Name2Gbl->getInitializer()));
ConstantDataArray *Name2GblCA =
dyn_cast<ConstantDataArray>(Name2Gbl->getInitializer());
EXPECT_EQ(Name2GblCA->getAsCString(), ";file1;array2;3;5;;");
EXPECT_TRUE(Initializer->getType()->getArrayElementType()->isPointerTy());
EXPECT_EQ(Initializer->getType()->getArrayNumElements(), Names.size());
}
TEST_F(OpenMPIRBuilderTest, CreateMapperAllocas) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned TotalNbOperand = 2;
OpenMPIRBuilder::MapperAllocas MapperAllocas;
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
OMPBuilder.createMapperAllocas(Loc, AllocaIP, TotalNbOperand, MapperAllocas);
EXPECT_NE(MapperAllocas.ArgsBase, nullptr);
EXPECT_NE(MapperAllocas.Args, nullptr);
EXPECT_NE(MapperAllocas.ArgSizes, nullptr);
EXPECT_TRUE(MapperAllocas.ArgsBase->getAllocatedType()->isArrayTy());
ArrayType *ArrType =
dyn_cast<ArrayType>(MapperAllocas.ArgsBase->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), TotalNbOperand);
EXPECT_TRUE(MapperAllocas.ArgsBase->getAllocatedType()
->getArrayElementType()
->isPointerTy());
EXPECT_TRUE(
cast<PointerType>(
MapperAllocas.ArgsBase->getAllocatedType()->getArrayElementType())
->isOpaqueOrPointeeTypeMatches(Builder.getInt8Ty()));
EXPECT_TRUE(MapperAllocas.Args->getAllocatedType()->isArrayTy());
ArrType = dyn_cast<ArrayType>(MapperAllocas.Args->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), TotalNbOperand);
EXPECT_TRUE(MapperAllocas.Args->getAllocatedType()
->getArrayElementType()
->isPointerTy());
EXPECT_TRUE(cast<PointerType>(
MapperAllocas.Args->getAllocatedType()->getArrayElementType())
->isOpaqueOrPointeeTypeMatches(Builder.getInt8Ty()));
EXPECT_TRUE(MapperAllocas.ArgSizes->getAllocatedType()->isArrayTy());
ArrType = dyn_cast<ArrayType>(MapperAllocas.ArgSizes->getAllocatedType());
EXPECT_EQ(ArrType->getNumElements(), TotalNbOperand);
EXPECT_TRUE(MapperAllocas.ArgSizes->getAllocatedType()
->getArrayElementType()
->isIntegerTy(64));
}
TEST_F(OpenMPIRBuilderTest, EmitMapperCall) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
LLVMContext &Ctx = M->getContext();
OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
unsigned TotalNbOperand = 2;
OpenMPIRBuilder::MapperAllocas MapperAllocas;
IRBuilder<>::InsertPoint AllocaIP(&F->getEntryBlock(),
F->getEntryBlock().getFirstInsertionPt());
OMPBuilder.createMapperAllocas(Loc, AllocaIP, TotalNbOperand, MapperAllocas);
auto *BeginMapperFunc = OMPBuilder.getOrCreateRuntimeFunctionPtr(
omp::OMPRTL___tgt_target_data_begin_mapper);
SmallVector<uint64_t> Flags = {0, 2};
uint32_t StrSize;
Constant *SrcLocCst =
OMPBuilder.getOrCreateSrcLocStr("", "file1", 2, 5, StrSize);
Value *SrcLocInfo = OMPBuilder.getOrCreateIdent(SrcLocCst, StrSize);
Constant *Cst1 =
OMPBuilder.getOrCreateSrcLocStr("array1", "file1", 2, 5, StrSize);
Constant *Cst2 =
OMPBuilder.getOrCreateSrcLocStr("array2", "file1", 3, 5, StrSize);
SmallVector<llvm::Constant *> Names = {Cst1, Cst2};
GlobalVariable *Maptypes =
OMPBuilder.createOffloadMaptypes(Flags, ".offload_maptypes");
Value *MaptypesArg = Builder.CreateConstInBoundsGEP2_32(
ArrayType::get(Type::getInt64Ty(Ctx), TotalNbOperand), Maptypes,
/*Idx0=*/0, /*Idx1=*/0);
GlobalVariable *Mapnames =
OMPBuilder.createOffloadMapnames(Names, ".offload_mapnames");
Value *MapnamesArg = Builder.CreateConstInBoundsGEP2_32(
ArrayType::get(Type::getInt8PtrTy(Ctx), TotalNbOperand), Mapnames,
/*Idx0=*/0, /*Idx1=*/0);
OMPBuilder.emitMapperCall(Builder.saveIP(), BeginMapperFunc, SrcLocInfo,
MaptypesArg, MapnamesArg, MapperAllocas, -1,
TotalNbOperand);
CallInst *MapperCall = dyn_cast<CallInst>(&BB->back());
EXPECT_NE(MapperCall, nullptr);
EXPECT_EQ(MapperCall->arg_size(), 9U);
EXPECT_EQ(MapperCall->getCalledFunction()->getName(),
"__tgt_target_data_begin_mapper");
EXPECT_EQ(MapperCall->getOperand(0), SrcLocInfo);
EXPECT_TRUE(MapperCall->getOperand(1)->getType()->isIntegerTy(64));
EXPECT_TRUE(MapperCall->getOperand(2)->getType()->isIntegerTy(32));
EXPECT_EQ(MapperCall->getOperand(6), MaptypesArg);
EXPECT_EQ(MapperCall->getOperand(7), MapnamesArg);
EXPECT_TRUE(MapperCall->getOperand(8)->getType()->isPointerTy());
}
TEST_F(OpenMPIRBuilderTest, CreateTask) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
AllocaInst *ValPtr32 = Builder.CreateAlloca(Builder.getInt32Ty());
AllocaInst *ValPtr128 = Builder.CreateAlloca(Builder.getInt128Ty());
Value *Val128 =
Builder.CreateLoad(Builder.getInt128Ty(), ValPtr128, "bodygen.load");
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
Builder.restoreIP(AllocaIP);
AllocaInst *Local128 = Builder.CreateAlloca(Builder.getInt128Ty(), nullptr,
"bodygen.alloca128");
Builder.restoreIP(CodeGenIP);
// Loading and storing captured pointer and values
Builder.CreateStore(Val128, Local128);
Value *Val32 = Builder.CreateLoad(ValPtr32->getAllocatedType(), ValPtr32,
"bodygen.load32");
LoadInst *PrivLoad128 = Builder.CreateLoad(
Local128->getAllocatedType(), Local128, "bodygen.local.load128");
Value *Cmp = Builder.CreateICmpNE(
Val32, Builder.CreateTrunc(PrivLoad128, Val32->getType()));
Instruction *ThenTerm, *ElseTerm;
SplitBlockAndInsertIfThenElse(Cmp, CodeGenIP.getBlock()->getTerminator(),
&ThenTerm, &ElseTerm);
};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
Builder.restoreIP(OMPBuilder.createTask(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()),
BodyGenCB));
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
// Verify the Ident argument
GlobalVariable *Ident = cast<GlobalVariable>(TaskAllocCall->getArgOperand(0));
ASSERT_NE(Ident, nullptr);
EXPECT_TRUE(Ident->hasInitializer());
Constant *Initializer = Ident->getInitializer();
GlobalVariable *SrcStrGlob =
cast<GlobalVariable>(Initializer->getOperand(4)->stripPointerCasts());
ASSERT_NE(SrcStrGlob, nullptr);
ConstantDataArray *SrcSrc =
dyn_cast<ConstantDataArray>(SrcStrGlob->getInitializer());
ASSERT_NE(SrcSrc, nullptr);
// Verify the num_threads argument.
CallInst *GTID = dyn_cast<CallInst>(TaskAllocCall->getArgOperand(1));
ASSERT_NE(GTID, nullptr);
EXPECT_EQ(GTID->arg_size(), 1U);
EXPECT_EQ(GTID->getCalledFunction()->getName(), "__kmpc_global_thread_num");
// Verify the flags
// TODO: Check for others flags. Currently testing only for tiedness.
ConstantInt *Flags = dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(2));
ASSERT_NE(Flags, nullptr);
EXPECT_EQ(Flags->getSExtValue(), 1);
// Verify the data size
ConstantInt *DataSize =
dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(3));
ASSERT_NE(DataSize, nullptr);
EXPECT_EQ(DataSize->getSExtValue(), 24); // 64-bit pointer + 128-bit integer
// TODO: Verify size of shared clause variables
// Verify Wrapper function
Function *WrapperFunc =
dyn_cast<Function>(TaskAllocCall->getArgOperand(5)->stripPointerCasts());
ASSERT_NE(WrapperFunc, nullptr);
EXPECT_FALSE(WrapperFunc->isDeclaration());
CallInst *OutlinedFnCall = dyn_cast<CallInst>(WrapperFunc->begin()->begin());
ASSERT_NE(OutlinedFnCall, nullptr);
EXPECT_EQ(WrapperFunc->getArg(0)->getType(), Builder.getInt32Ty());
EXPECT_EQ(OutlinedFnCall->getArgOperand(0), WrapperFunc->getArg(1));
// Verify the presence of `trunc` and `icmp` instructions in Outlined function
Function *OutlinedFn = OutlinedFnCall->getCalledFunction();
ASSERT_NE(OutlinedFn, nullptr);
EXPECT_TRUE(any_of(instructions(OutlinedFn),
[](Instruction &inst) { return isa<TruncInst>(&inst); }));
EXPECT_TRUE(any_of(instructions(OutlinedFn),
[](Instruction &inst) { return isa<ICmpInst>(&inst); }));
// Verify the execution of the task
CallInst *TaskCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task)
->user_back());
ASSERT_NE(TaskCall, nullptr);
EXPECT_EQ(TaskCall->getArgOperand(0), Ident);
EXPECT_EQ(TaskCall->getArgOperand(1), GTID);
EXPECT_EQ(TaskCall->getArgOperand(2), TaskAllocCall);
// Verify that the argument data has been copied
for (User *in : TaskAllocCall->users()) {
if (MemCpyInst *memCpyInst = dyn_cast<MemCpyInst>(in)) {
EXPECT_EQ(memCpyInst->getDest(), TaskAllocCall);
}
}
}
TEST_F(OpenMPIRBuilderTest, CreateTaskNoArgs) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
Builder.restoreIP(OMPBuilder.createTask(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()),
BodyGenCB));
OMPBuilder.finalize();
Builder.CreateRetVoid();
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateTaskUntied) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {};
BasicBlock *AllocaBB = Builder.GetInsertBlock();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
OpenMPIRBuilder::LocationDescription Loc(
InsertPointTy(BodyBB, BodyBB->getFirstInsertionPt()), DL);
Builder.restoreIP(OMPBuilder.createTask(
Loc, InsertPointTy(AllocaBB, AllocaBB->getFirstInsertionPt()), BodyGenCB,
/*Tied=*/false));
OMPBuilder.finalize();
Builder.CreateRetVoid();
// Check for the `Tied` argument
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
ASSERT_NE(TaskAllocCall, nullptr);
ConstantInt *Flags = dyn_cast<ConstantInt>(TaskAllocCall->getArgOperand(2));
ASSERT_NE(Flags, nullptr);
EXPECT_EQ(Flags->getZExtValue() & 1U, 0U);
EXPECT_FALSE(verifyModule(*M, &errs()));
}
TEST_F(OpenMPIRBuilderTest, CreateTaskFinal) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
F->setName("func");
IRBuilder<> Builder(BB);
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {};
IRBuilderBase::InsertPoint AllocaIP = Builder.saveIP();
BasicBlock *BodyBB = splitBB(Builder, /*CreateBranch=*/true, "alloca.split");
Builder.SetInsertPoint(BodyBB);
Value *Final = Builder.CreateICmp(
CmpInst::Predicate::ICMP_EQ, F->getArg(0),
ConstantInt::get(Type::getInt32Ty(M->getContext()), 0U));
OpenMPIRBuilder::LocationDescription Loc(Builder.saveIP(), DL);
Builder.restoreIP(OMPBuilder.createTask(Loc, AllocaIP, BodyGenCB,
/*Tied=*/false, Final));
OMPBuilder.finalize();
Builder.CreateRetVoid();
// Check for the `Tied` argument
CallInst *TaskAllocCall = dyn_cast<CallInst>(
OMPBuilder.getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_omp_task_alloc)
->user_back());
ASSERT_NE(TaskAllocCall, nullptr);
BinaryOperator *OrInst =
dyn_cast<BinaryOperator>(TaskAllocCall->getArgOperand(2));
ASSERT_NE(OrInst, nullptr);
EXPECT_EQ(OrInst->getOpcode(), BinaryOperator::BinaryOps::Or);
// One of the arguments to `or` instruction is the tied flag, which is equal
// to zero.
EXPECT_TRUE(any_of(OrInst->operands(), [](Value *op) {
if (ConstantInt *TiedValue = dyn_cast<ConstantInt>(op))
return TiedValue->getSExtValue() == 0;
return false;
}));
// One of the arguments to `or` instruction is the final condition.
EXPECT_TRUE(any_of(OrInst->operands(), [Final](Value *op) {
if (SelectInst *Select = dyn_cast<SelectInst>(op)) {
ConstantInt *TrueValue = dyn_cast<ConstantInt>(Select->getTrueValue());
ConstantInt *FalseValue = dyn_cast<ConstantInt>(Select->getFalseValue());
if (!TrueValue || !FalseValue)
return false;
return Select->getCondition() == Final &&
TrueValue->getSExtValue() == 2 && FalseValue->getSExtValue() == 0;
}
return false;
}));
EXPECT_FALSE(verifyModule(*M, &errs()));
}
} // namespace
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