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[mlir][openacc] Initial translation for DataOp to LLVM IR

Add basic translation of acc.data to LLVM IR with runtime calls.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D104301
This commit is contained in:
Valentin Clement 2021-07-27 22:03:45 -04:00 committed by clementval
parent 5b7208da36
commit c463fa6cad
3 changed files with 176 additions and 0 deletions

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@ -636,6 +636,31 @@ public:
createOffloadMapnames(SmallVectorImpl<llvm::Constant *> &Names,
std::string VarName);
struct MapperAllocas {
AllocaInst *ArgsBase = nullptr;
AllocaInst *Args = nullptr;
AllocaInst *ArgSizes = nullptr;
};
/// Create the allocas instruction used in call to mapper functions.
void createMapperAllocas(const LocationDescription &Loc,
InsertPointTy AllocaIP, unsigned NumOperands,
struct MapperAllocas &MapperAllocas);
/// Create the call for the target mapper function.
/// \param Loc The source location description.
/// \param MapperFunc Function to be called.
/// \param SrcLocInfo Source location information global.
/// \param MaptypesArgs
/// \param MapnamesArg
/// \param MapperAllocas The AllocaInst used for the call.
/// \param DeviceID Device ID for the call.
/// \param TotalNbOperand Number of operand in the call.
void emitMapperCall(const LocationDescription &Loc, Function *MapperFunc,
Value *SrcLocInfo, Value *MaptypesArg, Value *MapnamesArg,
struct MapperAllocas &MapperAllocas, int64_t DeviceID,
unsigned NumOperands);
public:
/// Generator for __kmpc_copyprivate
///

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@ -2318,6 +2318,51 @@ OpenMPIRBuilder::createOffloadMaptypes(SmallVectorImpl<uint64_t> &Mappings,
return MaptypesArrayGlobal;
}
void OpenMPIRBuilder::createMapperAllocas(const LocationDescription &Loc,
InsertPointTy AllocaIP,
unsigned NumOperands,
struct MapperAllocas &MapperAllocas) {
if (!updateToLocation(Loc))
return;
auto *ArrI8PtrTy = ArrayType::get(Int8Ptr, NumOperands);
auto *ArrI64Ty = ArrayType::get(Int64, NumOperands);
Builder.restoreIP(AllocaIP);
AllocaInst *ArgsBase = Builder.CreateAlloca(ArrI8PtrTy);
AllocaInst *Args = Builder.CreateAlloca(ArrI8PtrTy);
AllocaInst *ArgSizes = Builder.CreateAlloca(ArrI64Ty);
Builder.restoreIP(Loc.IP);
MapperAllocas.ArgsBase = ArgsBase;
MapperAllocas.Args = Args;
MapperAllocas.ArgSizes = ArgSizes;
}
void OpenMPIRBuilder::emitMapperCall(const LocationDescription &Loc,
Function *MapperFunc, Value *SrcLocInfo,
Value *MaptypesArg, Value *MapnamesArg,
struct MapperAllocas &MapperAllocas,
int64_t DeviceID, unsigned NumOperands) {
if (!updateToLocation(Loc))
return;
auto *ArrI8PtrTy = ArrayType::get(Int8Ptr, NumOperands);
auto *ArrI64Ty = ArrayType::get(Int64, NumOperands);
Value *ArgsBaseGEP =
Builder.CreateInBoundsGEP(ArrI8PtrTy, MapperAllocas.ArgsBase,
{Builder.getInt32(0), Builder.getInt32(0)});
Value *ArgsGEP =
Builder.CreateInBoundsGEP(ArrI8PtrTy, MapperAllocas.Args,
{Builder.getInt32(0), Builder.getInt32(0)});
Value *ArgSizesGEP =
Builder.CreateInBoundsGEP(ArrI64Ty, MapperAllocas.ArgSizes,
{Builder.getInt32(0), Builder.getInt32(0)});
Value *NullPtr = Constant::getNullValue(Int8Ptr->getPointerTo());
Builder.CreateCall(MapperFunc,
{SrcLocInfo, Builder.getInt64(DeviceID),
Builder.getInt32(NumOperands), ArgsBaseGEP, ArgsGEP,
ArgSizesGEP, MaptypesArg, MapnamesArg, NullPtr});
}
bool OpenMPIRBuilder::checkAndEmitFlushAfterAtomic(
const LocationDescription &Loc, llvm::AtomicOrdering AO, AtomicKind AK) {
assert(!(AO == AtomicOrdering::NotAtomic ||

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@ -2703,4 +2703,110 @@ TEST_F(OpenMPIRBuilderTest, CreateOffloadMapnames) {
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(MapperAllocas.ArgsBase->getAllocatedType()
->getArrayElementType()
->getPointerElementType()
->isIntegerTy(8));
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(MapperAllocas.Args->getAllocatedType()
->getArrayElementType()
->getPointerElementType()
->isIntegerTy(8));
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};
Constant *SrcLocCst = OMPBuilder.getOrCreateSrcLocStr("", "file1", 2, 5);
Value *SrcLocInfo = OMPBuilder.getOrCreateIdent(SrcLocCst);
Constant *Cst1 = OMPBuilder.getOrCreateSrcLocStr("array1", "file1", 2, 5);
Constant *Cst2 = OMPBuilder.getOrCreateSrcLocStr("array2", "file1", 3, 5);
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->getNumArgOperands(), 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());
}
} // namespace