61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
//===- ValueBoundsOpInterfaceImpl.cpp - Impl. of ValueBoundsOpInterface ---===//
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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/Dialect/Linalg/IR/ValueBoundsOpInterfaceImpl.h"
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#include "mlir/Dialect/Linalg/IR/Linalg.h"
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#include "mlir/Interfaces/ValueBoundsOpInterface.h"
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using namespace mlir;
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namespace mlir {
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namespace linalg {
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namespace {
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struct IndexOpInterface
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: public ValueBoundsOpInterface::ExternalModel<IndexOpInterface, IndexOp> {
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void populateBoundsForIndexValue(Operation *op, Value value,
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ValueBoundsConstraintSet &cstr) const {
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auto indexOp = cast<IndexOp>(op);
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auto linalgOp = indexOp->getParentOfType<LinalgOp>();
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assert(value == indexOp.getResult() && "invalid value");
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// index >= 0
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cstr.bound(value) >= 0;
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// index < dim size
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int64_t flatDimPos =
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cast<AffineDimExpr>(
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linalgOp.getShapesToLoopsMap().getResult(indexOp.getDim()))
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.getPosition();
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// Find the `flatDimPos`-th operand dimension.
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int64_t flatDimCtr = 0;
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for (Value operand : linalgOp->getOperands()) {
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assert(flatDimPos >= flatDimCtr && "invalid pos");
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auto shapedType = llvm::cast<ShapedType>(operand.getType());
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if (flatDimPos < flatDimCtr + shapedType.getRank()) {
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cstr.bound(value) < cstr.getExpr(operand, flatDimPos - flatDimCtr);
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break;
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}
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flatDimCtr += shapedType.getRank();
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}
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}
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};
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} // namespace
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} // namespace linalg
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} // namespace mlir
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void mlir::linalg::registerValueBoundsOpInterfaceExternalModels(
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DialectRegistry ®istry) {
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registry.addExtension(+[](MLIRContext *ctx, linalg::LinalgDialect *dialect) {
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IndexOp::attachInterface<IndexOpInterface>(*ctx);
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// Note: ValueBoundsOpInterface implementation is not required for ops that
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// implement `DestinationStyleOpInterface` (for querying shaped OpResults).
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});
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}
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