derek.holloway
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43 lines
1.6 KiB
C++
43 lines
1.6 KiB
C++
//===-- FIRBoxUtils.cpp ---------------------------------------------------===//
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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 "flang/Optimizer/Dialect/FIRBoxUtils.h"
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#include "flang/Optimizer/Dialect/FIROps.h"
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#include "flang/Optimizer/Dialect/FIRType.h"
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#include "mlir/Dialect/Arith/IR/Arith.h"
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namespace fir {
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void genDimInfoFromBox(mlir::OpBuilder &builder, mlir::Location loc,
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mlir::Value box,
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llvm::SmallVectorImpl<mlir::Value> *lbounds,
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llvm::SmallVectorImpl<mlir::Value> *extents,
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llvm::SmallVectorImpl<mlir::Value> *strides) {
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auto boxType = mlir::dyn_cast<fir::BaseBoxType>(box.getType());
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assert(boxType && "must be a box");
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if (!lbounds && !extents && !strides)
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return;
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unsigned rank = fir::getBoxRank(boxType);
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assert(!boxType.isAssumedRank() && "must be an array of known rank");
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mlir::Type idxTy = builder.getIndexType();
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for (unsigned i = 0; i < rank; ++i) {
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mlir::Value dim = mlir::arith::ConstantIndexOp::create(builder, loc, i);
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auto dimInfo =
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fir::BoxDimsOp::create(builder, loc, idxTy, idxTy, idxTy, box, dim);
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if (lbounds)
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lbounds->push_back(dimInfo.getLowerBound());
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if (extents)
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extents->push_back(dimInfo.getExtent());
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if (strides)
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strides->push_back(dimInfo.getByteStride());
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}
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}
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} // namespace fir
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