689afa88ae
Since the new data operand operations have been added in D148389 and adopted on acc.update in D149909, the old clause operands are no longer needed. This is a first patch to start cleaning the OpenACC operations with data clause operands. The `LegalizeDataOpForLLVMTranslation` will become obsolete when all operations will be cleaned. For the time being only the appropriate part are being removed. `processOperands` will also receive some updates once all the operands will be coming from an acc data operand operation. Reviewed By: razvanlupusoru, jeanPerier Differential Revision: https://reviews.llvm.org/D150053
248 lines
10 KiB
C++
248 lines
10 KiB
C++
//===- OpenACCToLLVM.cpp - Prepare OpenACC data for LLVM translation ------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "mlir/Conversion/OpenACCToLLVM/ConvertOpenACCToLLVM.h"
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#include "mlir/Conversion/LLVMCommon/Pattern.h"
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#include "mlir/Dialect/LLVMIR/LLVMDialect.h"
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#include "mlir/Dialect/OpenACC/OpenACC.h"
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#include "mlir/IR/Builders.h"
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#include "mlir/Pass/Pass.h"
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namespace mlir {
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#define GEN_PASS_DEF_CONVERTOPENACCTOLLVMPASS
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#include "mlir/Conversion/Passes.h.inc"
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} // namespace mlir
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using namespace mlir;
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//===----------------------------------------------------------------------===//
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// DataDescriptor implementation
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//===----------------------------------------------------------------------===//
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constexpr StringRef getStructName() { return "openacc_data"; }
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/// Construct a helper for the given descriptor value.
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DataDescriptor::DataDescriptor(Value descriptor) : StructBuilder(descriptor) {
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assert(value != nullptr && "value cannot be null");
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}
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/// Builds IR creating an `undef` value of the data descriptor.
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DataDescriptor DataDescriptor::undef(OpBuilder &builder, Location loc,
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Type basePtrTy, Type ptrTy) {
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Type descriptorType = LLVM::LLVMStructType::getNewIdentified(
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builder.getContext(), getStructName(),
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{basePtrTy, ptrTy, builder.getI64Type()});
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Value descriptor = builder.create<LLVM::UndefOp>(loc, descriptorType);
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return DataDescriptor(descriptor);
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}
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/// Check whether the type is a valid data descriptor.
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bool DataDescriptor::isValid(Value descriptor) {
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if (auto type = descriptor.getType().dyn_cast<LLVM::LLVMStructType>()) {
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if (type.isIdentified() && type.getName().startswith(getStructName()) &&
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type.getBody().size() == 3 &&
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(type.getBody()[kPtrBasePosInDataDescriptor]
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.isa<LLVM::LLVMPointerType>() ||
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type.getBody()[kPtrBasePosInDataDescriptor]
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.isa<LLVM::LLVMStructType>()) &&
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type.getBody()[kPtrPosInDataDescriptor].isa<LLVM::LLVMPointerType>() &&
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type.getBody()[kSizePosInDataDescriptor].isInteger(64))
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return true;
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}
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return false;
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}
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/// Builds IR inserting the base pointer value into the descriptor.
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void DataDescriptor::setBasePointer(OpBuilder &builder, Location loc,
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Value basePtr) {
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setPtr(builder, loc, kPtrBasePosInDataDescriptor, basePtr);
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}
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/// Builds IR inserting the pointer value into the descriptor.
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void DataDescriptor::setPointer(OpBuilder &builder, Location loc, Value ptr) {
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setPtr(builder, loc, kPtrPosInDataDescriptor, ptr);
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}
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/// Builds IR inserting the size value into the descriptor.
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void DataDescriptor::setSize(OpBuilder &builder, Location loc, Value size) {
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setPtr(builder, loc, kSizePosInDataDescriptor, size);
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}
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//===----------------------------------------------------------------------===//
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// Conversion patterns
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//===----------------------------------------------------------------------===//
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namespace {
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template <typename Op>
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class LegalizeDataOpForLLVMTranslation : public ConvertOpToLLVMPattern<Op> {
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using ConvertOpToLLVMPattern<Op>::ConvertOpToLLVMPattern;
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LogicalResult
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matchAndRewrite(Op op, typename Op::Adaptor adaptor,
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ConversionPatternRewriter &builder) const override {
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Location loc = op.getLoc();
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TypeConverter *converter = ConvertToLLVMPattern::getTypeConverter();
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unsigned numDataOperand = op.getNumDataOperands();
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// Keep the non data operands without modification.
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auto nonDataOperands = adaptor.getOperands().take_front(
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adaptor.getOperands().size() - numDataOperand);
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SmallVector<Value> convertedOperands;
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convertedOperands.append(nonDataOperands.begin(), nonDataOperands.end());
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// Go over the data operand and legalize them for translation.
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for (unsigned idx = 0; idx < numDataOperand; ++idx) {
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Value originalDataOperand = op.getDataOperand(idx);
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// Traverse operands that were converted to MemRefDescriptors.
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if (auto memRefType =
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originalDataOperand.getType().dyn_cast<MemRefType>()) {
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Type structType = converter->convertType(memRefType);
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Value memRefDescriptor = builder
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.create<UnrealizedConversionCastOp>(
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loc, structType, originalDataOperand)
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.getResult(0);
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// Calculate the size of the memref and get the pointer to the allocated
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// buffer.
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SmallVector<Value> sizes;
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SmallVector<Value> strides;
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Value sizeBytes;
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ConvertToLLVMPattern::getMemRefDescriptorSizes(
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loc, memRefType, {}, builder, sizes, strides, sizeBytes);
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MemRefDescriptor descriptor(memRefDescriptor);
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Value dataPtr = descriptor.alignedPtr(builder, loc);
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auto ptrType = descriptor.getElementPtrType();
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auto descr = DataDescriptor::undef(builder, loc, structType, ptrType);
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descr.setBasePointer(builder, loc, memRefDescriptor);
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descr.setPointer(builder, loc, dataPtr);
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descr.setSize(builder, loc, sizeBytes);
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convertedOperands.push_back(descr);
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} else if (originalDataOperand.getType().isa<LLVM::LLVMPointerType>()) {
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convertedOperands.push_back(originalDataOperand);
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} else {
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// Type not supported.
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return builder.notifyMatchFailure(op, "unsupported type");
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}
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}
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if constexpr (std::is_same_v<Op, acc::ParallelOp> ||
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std::is_same_v<Op, acc::DataOp>) {
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auto newOp =
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builder.create<Op>(op.getLoc(), TypeRange(), convertedOperands,
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op.getOperation()->getAttrs());
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builder.inlineRegionBefore(op.getRegion(), newOp.getRegion(),
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newOp.getRegion().end());
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builder.eraseOp(op);
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} else {
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builder.replaceOpWithNewOp<Op>(op, TypeRange(), convertedOperands,
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op.getOperation()->getAttrs());
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}
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return success();
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}
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};
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} // namespace
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void mlir::populateOpenACCToLLVMConversionPatterns(
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LLVMTypeConverter &converter, RewritePatternSet &patterns) {
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patterns.add<LegalizeDataOpForLLVMTranslation<acc::DataOp>>(converter);
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patterns.add<LegalizeDataOpForLLVMTranslation<acc::EnterDataOp>>(converter);
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patterns.add<LegalizeDataOpForLLVMTranslation<acc::ExitDataOp>>(converter);
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patterns.add<LegalizeDataOpForLLVMTranslation<acc::ParallelOp>>(converter);
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}
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namespace {
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struct ConvertOpenACCToLLVMPass
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: public impl::ConvertOpenACCToLLVMPassBase<ConvertOpenACCToLLVMPass> {
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using Base::Base;
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void runOnOperation() override;
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};
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} // namespace
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void ConvertOpenACCToLLVMPass::runOnOperation() {
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auto op = getOperation();
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auto *context = op.getContext();
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// Convert to OpenACC operations with LLVM IR dialect
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RewritePatternSet patterns(context);
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LowerToLLVMOptions options(context);
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options.useOpaquePointers = useOpaquePointers;
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LLVMTypeConverter converter(context, options);
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populateOpenACCToLLVMConversionPatterns(converter, patterns);
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ConversionTarget target(*context);
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target.addLegalDialect<LLVM::LLVMDialect>();
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target.addLegalOp<UnrealizedConversionCastOp>();
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auto allDataOperandsAreConverted = [](ValueRange operands) {
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for (Value operand : operands) {
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if (!DataDescriptor::isValid(operand) &&
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!operand.getType().isa<LLVM::LLVMPointerType>())
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return false;
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}
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return true;
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};
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target.addDynamicallyLegalOp<acc::DataOp>(
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[allDataOperandsAreConverted](acc::DataOp op) {
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return allDataOperandsAreConverted(op.getCopyOperands()) &&
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allDataOperandsAreConverted(op.getCopyinOperands()) &&
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allDataOperandsAreConverted(op.getCopyinReadonlyOperands()) &&
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allDataOperandsAreConverted(op.getCopyoutOperands()) &&
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allDataOperandsAreConverted(op.getCopyoutZeroOperands()) &&
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allDataOperandsAreConverted(op.getCreateOperands()) &&
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allDataOperandsAreConverted(op.getCreateZeroOperands()) &&
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allDataOperandsAreConverted(op.getNoCreateOperands()) &&
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allDataOperandsAreConverted(op.getPresentOperands()) &&
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allDataOperandsAreConverted(op.getDeviceptrOperands()) &&
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allDataOperandsAreConverted(op.getAttachOperands());
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});
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target.addDynamicallyLegalOp<acc::EnterDataOp>(
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[allDataOperandsAreConverted](acc::EnterDataOp op) {
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return allDataOperandsAreConverted(op.getCopyinOperands()) &&
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allDataOperandsAreConverted(op.getCreateOperands()) &&
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allDataOperandsAreConverted(op.getCreateZeroOperands()) &&
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allDataOperandsAreConverted(op.getAttachOperands());
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});
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target.addDynamicallyLegalOp<acc::ExitDataOp>(
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[allDataOperandsAreConverted](acc::ExitDataOp op) {
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return allDataOperandsAreConverted(op.getCopyoutOperands()) &&
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allDataOperandsAreConverted(op.getDeleteOperands()) &&
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allDataOperandsAreConverted(op.getDetachOperands());
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});
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target.addDynamicallyLegalOp<acc::ParallelOp>(
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[allDataOperandsAreConverted](acc::ParallelOp op) {
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return allDataOperandsAreConverted(op.getReductionOperands()) &&
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allDataOperandsAreConverted(op.getCopyOperands()) &&
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allDataOperandsAreConverted(op.getCopyinOperands()) &&
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allDataOperandsAreConverted(op.getCopyinReadonlyOperands()) &&
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allDataOperandsAreConverted(op.getCopyoutOperands()) &&
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allDataOperandsAreConverted(op.getCopyoutZeroOperands()) &&
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allDataOperandsAreConverted(op.getCreateOperands()) &&
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allDataOperandsAreConverted(op.getCreateZeroOperands()) &&
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allDataOperandsAreConverted(op.getNoCreateOperands()) &&
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allDataOperandsAreConverted(op.getPresentOperands()) &&
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allDataOperandsAreConverted(op.getDevicePtrOperands()) &&
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allDataOperandsAreConverted(op.getAttachOperands()) &&
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allDataOperandsAreConverted(op.getGangPrivateOperands()) &&
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allDataOperandsAreConverted(op.getGangFirstPrivateOperands());
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});
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if (failed(applyPartialConversion(op, target, std::move(patterns))))
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signalPassFailure();
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}
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